VALVE OF AUTOMATIC PILOTS

Abstract: The valve of automatic pilots operates exclusively in pendency, and in proportional relation to the manometric (static) pressure dominant in the tubulation. The valve of automatic pilots operates in a zone - pre-established - of the manometric (static) pressure and functions as either the highest or the lowest limiter of all the manometric (static) pressures originating from the fluid in the tubulation. The valve of automatic pilots satisfies all the requirements of safety, preventing the occurrence of overpressure or the consequent rupture of the tubulation as well as obstructing the flux in case of considerable leakage.

Description: VALVE OF AUTOMATIC PILOTS - 1 - Description of the model of VALVE of AUTOMATIC PILOTS destined for use in industrial tubulation against high pressure anή/or rupture (in case thare were excessive alteration, in the pre-established operative pressure)• This paper refers to the model of the VALVE of AUTOMATIC PILOTS of command utilizing the energy of the fluid proper (whether compressible or noifc) to maintain the function: , Being the First Pilot - drafts 1 a n d 2 - to serve to limit the maximum pressure of the function and the Second Pilot - drafts 3 a d 4 - to limit the lowest (minimum) pressure during the operation*. The VALVE of AUTOMATIC PILOTS, besides operating as independent units, commands all valves of fluid equipped with "castles" and diaphragms for the dynamic pressure, i.e., with auxiliary circuits, "bypasses", with either fixed or varied orifices for the fluid in the "castle".- Of the four drafts annexed, 1 and 2 show the croBi¬ section of the VALVE of AUTOMATIC PILOTS destined to limiting the highest pressure in the : tubu¬ lation, while drafts 3 and 4 illustrate the VALVE of AUTOMATIC PILOTS limiting the lowest pressure in the tubulation. All PILOTS close and block the £Lux &t once - without any auxiliary energy - when the pressure increases or diminishes overpassing the pre- established limit - be they the uppermostor the lowermost in the tubulation. Intending to simplify the present description of the .VALVE of AUTOMATIC PILOTS, draft 1 shows the OPEN position when in high pressure - the maxi¬ mum pressure pre-established for operation - and draft 2 illustrates the CLOSED position of the same PILOT when the pressure in the tubulation reaches the pre-established estimate during the operation. The draft 3 shov/s the OPEN position of the Pilot at LOW PRESSUI-E - the minimum limit of.the oper¬ ation - while draft 4 illustrates the CLOSED Pi¬ lot Valve when the pressure in the tubulation i*s lowered beyond the pre-established level, such as in case of rupture. The VALVE of AUTOMATIC PILOTS consisis of: main _body (fig. 1), superior cap (fig.2), inferior cap (fig.3)- and diaphragm (fig. ) — exposed only to sta-tic (manometric) pressure — being the dia¬ phragm (fig. 4) destined to transfer the load;of the manometric pressure from the tubulation - to _ the piston (fig. ) equipped with a synthetic rubber oone (fig.6) either to close or to liber— ate the flux of fluid through the orifice (fig.16) The piston proper (fig.5) is yet equipped with two H 0- iting" (fig.15; in order to avoid that the fluid - when the PILOT is open - passes to the free recipient (fig.17; of the piston, thus that the fluid passes only through 5. the entry (fig.13), chamber (fig.7) and exit (fig.14 , when the pressure in the tubulation is between the pre- established minimum and maximum. In the upper part of the piston, which operates as a central axis, there is a chamber (.fig.7), with an inferior disc (fig.8 of the 10, spring (fig.9 . This spring leans against the upper disc (.fig.10), whϊch is equipped with two guides (fig.ll) in the upper cap (fig.2) , eliminating the eventual alterations of modular elasticity "G") tangential of the spring when 15, the same oscillates within the limit of the precalcu- lated flexion. In order to regulate and/or vary the flexion of the spring, the screw-threaded shaft ^fig.12) moves gyra¬ ting downwards, increasing the force (mechanical — 20. pressure) of the spring against the load (manometric _? pressure X surface cm ) of the diaphragm originating from the tubulation. The VALVE ' ' of AUTOMATIC PILOTS in function, is to/limit the HIGH PRESSURE (drafts 1 and 2); the manometric 25. (static) pressure of the tubulation when reaching the pre-established uppermost limit; the diaphragm (fig. ) receives the pressure via orifice lfig.18) transforming it to load (surface x kg) dislocating the piston (fig.5) together with the cone (fig.6) thus closing the flux of 5. fluid in the orifice (fig.16), shutting of the flux between the entry t ig.13) and the exit (fig,14). The function of the VALΪE of AUTOMATIC PILOTS to limit the lower pressure (drafts 3 and 4 ) s Identical, though the manometric (static) pressure in 10. the tubulation lowers (beyond the pre-established limit) the cone Ifig.6) leans against the top of the orifice \ ig.16), impending further ' flux; in general, in the latter case, this would happen only rupture or conside¬ rable leakage should occur.

Claims: C L A I S 1. The VALVE of AUTOMATIC PILOTS is characterized by one UNIQUE CHAMBER in the line of DYNAMIC pressure. 2. The VALVE of AUTOMATIC PILOTS, in accordance with the claim 1, is characterized by one UNIQUE DIAPHRAGM which is exposed only to manometric (static) pressure dominant in the line of tubulation. 3. The VALVE of AUTOMATIC PILOTS, in accordance with the claims 1 and 2, is characterized by one UNIQUE PISTON to obstruct or liberate the flux. 4. The VALVE of AUTOMATIC PILOTS, in accordance with the claims 1, 2 and 3, is characterized by one UNIQUE SPRING with pre-established flexion, and, proportional to the correspondent manometric pressure of the tubulation. "SUBSTITUTE SHEET 1 .

Inventors: KARVALY KAROLY, KARVALY, KAROLY
Applicants: KARVALY KAROLY, KARVALY, KAROLY
Application year: 1985
Main classification: F16K17
IPC codes: F16K11, F16K31, G05D16