BRMU9101291U2 - TECHNICAL ARRANGEMENT INTRODUCED IN FULL LOCK SAFETY VALVE - Google Patents

Abstract

TECHNICAL PROVISION INTRODUCED IN TOTAL LOCK SAFETY VALVE. It comprises a body coupled to said container with at least a first communicating passageway between the interior of the container and the exterior, wherein within said passageway there is an axially displaceable rod whose inner end confronts a first seat defining a record. In its extreme "waters above", in relation to this first seat, this passage has a second obturation, in front of which and "waters above" is arranged a obturating body of complementary geometry and permanently requested in distance by a calibrated elastic means, communicating the base of the shutter body with the entry to the body of the register. The complementary portions of said obturator body and its seat in its separate position form a fluid passage that determines a venturi effect that defines a depression capable of overcoming the opposite stress of the elastic medium by forming an absolute overflow shut-off relief valve. and disposed within the container; The rod has "waters below" the first seat, a frusto-conical portion, said body having a complementary seat constituting an endstop and defining an airtight seat between the rod and the body of the record in its transitional "waters" below, down, beneath, underneath, downwards, downhill"; Said rod extends axially to a length such that when said rod is in the obturation position on the first seat, it exerts a push request over a obturation mean equating the pressure inside the container with the pressure within the first seat. passage, "waters above" the first seat.

Description

"TECHNICAL PROVISION INTRODUCED IN TOTAL LOCK SAFETY VALVE".

L- INTRODUCTION

The present invention relates to the total block safety valve, which acts in cooperation with an overflow actuating valve means capable of fully closing the passage of a fluid to the outside acting from the interior of the container. the container.

This fluid may be a gas or gaseous liquid of any kind stored under pressure within a container, such as an oxygen, CNG, nitrogen, acetylene or other type of fuel gas.

2.- FIELD OF APPLICATION

This technical arrangement is capable of being used in any type of device applicable to any package, container or container in which a pressure fluid, gas or fuel is contained, the device in question having the traditional functions of a valve, that is, capable of opening and closing it and releasing the passage of contents outwardly added with the functions of a blocking valve capable of closing or blocking the outlet of the gaseous mass completely thereafter.

discharge with a sudden, unexpected, unplanned increase in outflow.

3.- PROBLEMS TO BE SOLVED

The use of containers containing a

fuel or gas under high pressure presents high risks. Normally these containers have valves or registers of those models already known, and from this register is bound by means of couplings such as nipples or other devices, where at least one duct or transmission line for the medium that makes use. In particular, these rigid or flexible ducts have couplings, pressure gauges, pressure reducers and other devices, according to the teachings of the state of the art.

Known records are projecting from the outside of the container and can therefore be subjected to compound bending requests, especially when the cylinder or container is moved suddenly, such as in situations of accidents, blows, falls, etc., which It can cause damage to the registry, causing it to crack, crack, and even the loss of the head. This implies that in the event of damage, cracking or breakage, the pressure fluid contained in the container leaks uncontrollably, flooding the enclosure where the cylinder is located, causing explosions, fires, etc., with serious hazards to the persons located. in surrounding.

Another problem encountered in construction works is the impossibility of emptying the cylinder or container quickly and controlled and acting on the same register. - - - - Nowadays, this operation requires a minimum of two to four hours and is a slow emptying of the fluid. This problem stems from the fact that with overflow safety valves They are automatically repositioned when the container is emptied, ending the operation. It is obligatory to drain the contents very slowly so that the safety valve does not block the outlet.

The reason for this form of operation is that, at present, these safety valves do not have a selective mechanical command or command, being forced to remain in the condition of "open safety valve" during the drainage operation, which as is well known. general among technicians in the field, implies an outlet with a significant flow of fluid out of the container.

Another important problem to be mentioned is that it is currently impossible to reposition the overflow block safety valve to its open valve position mechanically and selectively, regardless of the pressure within the container, and without having to change the mass of the fluid contained therein. This operation is known as "reset".

Among the problems associated with vehicle-driven gas cylinders, it is widely known that in CNG or LPG-powered vehicles, cylinders or tanks have considerable lengths and a coaxial actuating valve with the cylinder shaft, and may not find space. sufficient or adequate in the car carrier. For this reason, it is convenient to design registers whose flywheel axis is located perpendicular to the cylinder axis, reducing the projection of the register from the outside of the register. As is well known, changing or changing the direction prevents selective mechanical unlocking of the safety valve, being inexpensive and simple to manufacture, in addition to the aforementioned features.

- - - - The smallest possible dimensions allow

It also minimizes the risk of breakage, cracking, rupture or deformation in the event of an accident as a result of extending the registration to a minimum distance outside the container, reducing the demands for eventual composite bending over said valve body and compact registration. _

To summarize the foregoing, it is necessary to have a small and as small as possible safety valve positioned within the container and protruding out of the container in a short extension as short as possible; that can produce an effective total blockage for excess flow; selectively restarted, that is to say reset, by mechanical control even with the tank containing pressure gas and which selectively allows the tank to be emptied in a short period of time and at the same time of low cost and offer long service life

4.- GLOSSARY

For the correct understanding, some terms need

be defined, as follows:. "waters below": This is the direction of the fluid flow inlet direction from the outside to the inside of the tank.

. "waters above": It is the direction of the outflow direction of the fluid contained in the tank, from its interior to the exterior.

5.- STATE OF THE TECHNIQUE

To date, overflow safety valves known in the state of the art are used in pressure gas containers, partially blocking the gas outlet due to a sudden increase in the content outlet flow.

Other types of overflow safety valves applied to step registers are provided to operate on the outside of the container, other models of overflow safety valves are positioned within the container body but have a "through" port. "for relief and restraint from the pressures, which will remain

forever, communicating with the outside, nullifying the concept of blocking tota1 · ^ ■■ ^ ... _

It is then noted that known safety valves cannot act as total overflow shutoff valves for the reasons and reasons already reported.

It is important to note that the known safety valves do not include mechanical means of resetting, resetting the valve to its open position, leaving the cylinder in working condition, and completely independent of the remaining gas charge within the cylinder or container.

However, when designing these devices, it is necessary to take into account that according to the requirements, the use and the content, and must guarantee a total flow block from low relative pressures, for example from 0.2 Kg / cm2, to pressures. very high, in the order of 200 kg / cm2 or higher.

The registers used in high pressure gas cylinders have a displaceable shutter mean which in one operation seals and closes the passage of contents and in another position releases it. All records needed moving components in relation to the fixed body of engagement with the container, because it is precisely the displacement of the movable part that allows the passage of the content to be released. In the known embodiments, it is found that over time, leaks and leaks are produced between said moving parts and stationary parts due to the gradual wear of materials and corrosion produced by some types of gases in relation to certain metallic components. and elastomeric.

As a result of the above, it is found that there are no record data capable of creating an airtight seal between the valve body and the displaceable means of actuation thereof, such as the stem of a record, 'each time' that ' See opens the passage to the content. That is, there is no knowledge of compact records that each time the closing seal is eliminated and the passage of the contents is released, they are able to automatically create a hermetic seal on their moving components to prevent content leaks through of the clearances of the moving parts of said register.

Deepening these concepts, we can broaden the

problems encountered, explaining that:

. Some of the known overflow safety valves have "downstream" engagement of the valve body to the container, ie on the outside of the container. When the valve body ruptures, the contents of the cylinder or container are discharged outwards in a large and uncontrollable gaseous fuel leak, as the excess flow safety shutoff means are met. within the body part of the record that comes off or cracks due to the accident or malfunction.

. Other overflow safety valves, even disposed in the registration body and inside the container, have a port that communicates into the cylinder or container with the safety valve plug. In case of a possible blockage due to excess flow, when receiving a water hammer on the safety valve due to high pressure, due to the high pressure inside the container, this orifice allows to equalize the pressures, which facilitates the restart or reset automatic return of this valve to its original position. This passage remains permanently open and nullifies the concept of total blockage as it will be constantly open to the outside. On the other hand, this safety valve is not mechanically resettable or selectively resettable.

. In the two aforementioned constructions, a permanent outflow of gas is allowed permanently to the outside, which invades the vehicle's environment or cabin, and can cause everything from minor disasters to accidents, asWzes of relevant danger and great magnitude.

On the other hand, it is very common to see minor losses due to leakage of the contents through the leaks. clearance or warping of the flow and closing registers when opening the fuel passage, giving off unpleasant odors and a feeling of restlessness in the users, as well as the risks if the leaks increase the flow. As a consequence, it is desirable to be able to rely on media capable of opening the passage of content and at the same time making an airtight seal between the moving components of the register.

Another problem with currently known constructions is the amount of time required to completely dump the contents of the container. Therefore, when it is necessary to change the valve or perform any type of repair that means draining the gas cylinder, it is essential to completely drain or empty the contents. At present, this operation may take several hours. It is necessary to be able to count on a selectively fast drainage or depletion medium of the tank, which spends a decade of minutes and instead of the several hours that are required today to perform such operation. In short, it is necessary to have the smallest and most compact safety valve installed inside the container and protruding outside the container to a minimum extent or extension; that can produce a total and effective blockage for excess flow; selectively restartable or resettable by means of a mechanical control even with the tank containing pressurized gas and also allowing the tank to be emptied within a very short period of time.

6.- OBJECTIVES OF THE MODEL

The object of the present invention is a compact device of small dimensions which protrudes to a small extent from the outside of the container containing a pressurized fluid having at least one register provided with an overflow safety valve capable of "define a full and acting block on the same outlet channel of the contents. Said overflow safety valve completely blocks the passage of the contents within said acting container" within a range of pressures from a minimum of 0.2 Kg / cm2., Until pressures exceeding 200 Kg / cm2., With said valve positioned "waters above", from the coupling zone of the registration body to the container.

A second objective is to allow the movable register components to be able to automatically create "downstream" from the register valve seat a hermetic seal between the movable components and the register body each time the passage is opened. of the content and in a contemporary way the liberation of the passage of the content or opening; that is, each time the closing seal is canceled and the content passage is automatically enabled, a "water below" is created, an airtight seal between the moving components of the register and the body of the register.

It is also an object of the present invention that said register has a means for restoring the selective mechanical unlocking condition of the overflow safety valve incorporated into the same register by the simple act of closing and opening the register.

Another object of the invention is that the registration provided with the shut-off valve permits selective dumping of the gas cylinder contents within a time period not exceeding thirty minutes by mechanically acting on the safety valve and inhibiting its over-locking function. flow rate.

It is also an object of the invention to have a record having the aforementioned properties, which is also a compact device and has the axis associated with the steering wheel perpendicular to the axis of the cylinder or container.

Finally, the last object of the invention is the action on the valve to ensure that the selective mechanical restart or reset can be carried out with complete ease and independent of the prevailing pressure within the container, avoiding having to overcome high backpressures to achieve said. reset

7.- BRIEF DESCRIPTION OF THE FIGURES

For a complete and complete view of what constitutes the Technical Provision Introduced in the Total Lock Safety Valve, hereinafter and the object of this, accompany the accompanying illustrative drawings, to which reference is made as follows:

Figure 1: Shows a diametrical sectional view of an embodiment of the invention in which the left half of the pole is shown in its upper limit position, and in the right half it is shown in its lower limit position;

Figure 2: Shows detail enlargement of part

top of the same section of Figure 1;

Figure 3: Illustrates detail enlargement of part

lower section of the same section as Figure 1; Figure 4: Corresponds to the detail view of the overflow safety valve of Figure 1, arranged at the lower end of the registration body;

Figure 5: Refers to the partially sectioned and simplified perspective view of the construction shown in Figure 1;

Figure 6: Shows a diametric sectional view of another embodiment of the present invention;

Figure 7: Illustrates a constructional embodiment of Figures 1 to 3, with the maneuvering rod positioned 90 ° from the valve shaft;

Figure 8: Shows a cross-sectional view of a model of the present invention showing the overflow safety valve in its normal operating operating position, ie open and without resetting;

Figure 9: Corresponds to the perspective view of the simplified and exploded construction of the present invention;

Figure 10: Refer to the enlarged view showing in detail in a section the fundamental part of the present invention in its reset valve operating position;

Figure 11: Represents partially exploded perspective view of Figure 10.

9.- DETAILED DESCRIPTION OF THE FIGURES.

As shown in the accompanying Figures, it is found that in Figures 1 to 7 is indicated with (1) the mouthpiece of a generic container (2) such as a bottle or a cylinder. These containers, as a general rule, are metallic and very resistant, and in some constructions must be designed for internal pressures of more than 200 atmospheres. The nozzle (1) of the container (2) is conventionally coupled, for example, by means of a thread (3), a body of the register, indicated with the generic notation (4). This body has a lower portion thereof (5) housed within the container (2) and an upper portion protruding outside the container (2). Inside the body (4) there is a passage (7). This passage (7) may or may not be axial with respect to the vertical axis of the container (2) and has at least one communication (8) practiced on the upper and protruding portion (6) of the body (4) with at least one joining means. to a duct (9) which sends the contents to destination, such as a gas lance, a medium engine, a burner, etc.

An embodiment is shown in Figure 1 in which the communications (8) are two, and accordingly the ducts (9) are also two, but for the purposes of the invention it is sufficient to have at least one communication (8) in the which is coupled only to one duct or line (9).

In this first section, the passage (7) presents, "waters above", towards the direction of exit of the content and with respect to the communication couplings (8), a first seal seat (10). _ - - - Dc-shape convenient, the first leg "gives way

(7) is practiced as open axial communication at both ends in a plug (11), which in turn houses in one hole the axial drill (12) open at both ends and practiced in the body (4) so that said first seat (10) actually belongs to the buje (11).

However, nothing prevents the body (4) present, as shown in Figure 6, an axial drill (120) in which directly and without interposition of the plug (11) the first seat of the seal (100) is practiced.

"Waters above", always towards the exit "S2" of the contents of the first seat of the seal (10, 100) the first passage (7, 120) has at its lower end a second seat (13, 130) arranged into the lower portion (5) of the coupling body (4) and into the container or container (2).

Within said first passageway (7,120) is housed an axially displaceable rod (14) between an upper limit position position, open valve position and another lower limit position, closed valve. To this end, in Figures 1 and 3, the left half of them indicates the position that the pole adopts in the upper limit position and the right half shows the position that it adopts in the lower limit position.

This pole, according to the construction of Figure 1 to 3, has a lower end (14a) and an upper end (14b). At the upper end it protrudes outside the valve body (4) and engages a drive means such as a handwheel (15). This handwheel (15) allows the rod (14) to be rotated about its own axis in a portion of the helical screw seat (16), which allows its axial up and down movement.

In an intermediate portion between both ends of said pole, it has a obturating component (17) such as an elastomeric plug, which selectively sits against the first seat of the seal (10) in its lower limit position. , establishing this obturation contact, the closing of the register, symbolized with the flow (S4) in the figures. It is evident, in the position of the pole in its superior course, the plug (17) is released from its seat (10), opening for the content (S2) to the outside. __ _ ____ ^

In the construction of Figures 1 to 3, the continuation of said first seat plug (17), the protruding portion (6) of the registration body has a drill (21) coaxial with (12). In said drill (21), the rod (14) has, upwardly, an increase (18) and at this location the helical thread that conforms to the thread (16) already mentioned. After said threaded portion (18), the rod has a frusto-conical portion (19) followed by a diameter reduction and precisely defines the portion (14b) that protrudes outside the body of the record. Said drill (21) in its portion above the threaded seat (16) of the rod portion (18), has a seat (20) complementary to said frustoconical portion (19), which constitutes a career end stop superior to the rod and defining an airtight seal seat between the rod and the body of the record. This tapered seat (20) is preceded below by a step (28) followed by a cylindrical portion (29), these components being (16, 18), (28), (29) and (19, 20), a labyrinth in which the content pressure is laminated until the metal-to-metal seal (19, 20) closes the content passage and the ceding flow (S1) returns as stream (S3) and exits as stream (S2). That is, the inlet flow (Sl) with the register closed, exits outward as flow (S2) and blocking and resuming the portion (S3).

Frontally, the second seat (13) is arranged axially to the axis of the first branch of the passage (7), a shutter body (24) of complementary geometry to said second seat, said shutter body (2) being permanently requested when distancing from said seat. by an elastic means (25), which acts axially on a lower reduced portion (57), defining the base of the obturator body, a pushing surface (30) that faces the inlet flow (Sl) of the content within the body of the obturator. registration, confirming an overflow safety valve by closing or supporting the surface (56) of the plug body (24) against the second seat (13). Conveniently, "this" second "seat" assembly (13), obturator body surface (56) and elastic means (25) are enclosed within a housing (26) which communicates with the interior. of the container through an opening (27) and the reaction of the elastic component of (@ 5). It is adjustable by means of a screw (31) which sits on the body (32) and pushes said shutter (24).

As already stated, the outlet flow (Sl) of the container, upon exceeding a predetermined magnitude of work, upon exiting the passage imposed by the restriction between the seat (13) and the obstruction surface (56), determines a strong depression. , whose magnitude immediately sells the contrary demand of the spring (25), and the pressure of the tank pushes the obturator body (24) in airtight obturation. Closing the gas outlet from the interior of the tank or container by exerting an axial bias on the base (30) of said obturator body. This provides an elastomeric seal (33) "which it rests on the second seat (13) in shutter to assist in the closing action when the interior pressures are not too high (See Figure 3) .For this purpose there are overflow shutoff valves that operate at high pressures, for example. 200 Kg / cm2., and establish a metal-to-hermetic seal effect, but there are circumstances in which the internal working pressure of the container is reduced, in which case the metal-to-metal contact is defective. "O" ring (33), also called the o'ring ring, provides an excellent seal at low pressures. In the case of high pressures, the tapered seat prevents expulsion of the ring even if it has been expanded or increased by high pressure, and the rim (33) f It is flattened against the metal, increasing the hermetic seal.

As has been said, it is a feature of the invention that the second obturator seat (13, 56) is disposed within the container's enclosure extending the axial rod 14 to such an extent that when said rod 14 ) is in the lower limit position and shutter position against the first seat, its lower portion (14a) protrudes outside the area of the second seat "and presses the upper end of (24) downwardly, mechanically eliminating the obturation seal and re-establishing the operating conditions of the registration selectively.

Figure 4 represents in greater detail and scale the diametric section of the part (26), which houses the shutter and is integral with the lower body (5) of the register.

It is then observed that according to the invention, if the record body protruding out of the tank is cut, the obturation (13, 56) is intact and operative, ie it is not unusable providing a set of safety means directly operating from the same interior of the projecting register independent of the protruding body state container therein.

In Figure 7 another embodiment of the invention is observed which comprises a valve body (4) coupled to the nozzle (1) of a container (2). This valve body (4) has a beacon (12) in which is housed a plug (11) which has a first open passageway at both ends. Within this passageway is located coaxially displaceable at the length of its axis, a rod (14) whose upper end (42) is integral with a piston (43) whose lower surface houses an elastomeric plug (44) defining its support over the upper seat (45) of the plug (14) of the first seat of the seal (42, 45) proper to the register.

In this construction, the piston has a series of longitudinal channels (46) that allow the passage of the content once the first hermetic seal (42, 45) has been resolved and which conduct the content for communication (8) with the outside.

The upper portion (47) of the valve body of the embodiment of Figure 7 has a housing (49) substantially coaxial to and in communication with the drill (12) which is intercepted by another drill (50) perpendicular to (12). ). At the intersection of (49) and (50) a chamber is established within which a cam (51), integral with an axis (52), driven by a crank (59) or the like, is rotated.

The cam 51 rotates about its_axis with the shaft 52 and rests on the upper surface 48 of the piston 43, being shown in Figure 7 at the obturation position of the first hermetic seal, ie with the Registration closed.

In this construction, a threaded portion (54) of the shaft (52) rotates and advances axially in accordance with the arrow "Av" on a complementary thread of the bje (53), in this advance, outside of releasing the pressure on the head (48). ) of the piston (43), the first seat (45,44) is opened and a metal-to-metal seal is now established on a conical portion (55) of the shaft that engages with a conical seat (58) of the plug. (53), respecting the principles of the present invention.

In turn, the same plug (11) has at its lower end a second seat (13) against which the plug (24) rests, remaining in the same way as explained in relation to the operation of the spring ( 25), the burr surface (30) and elastomeric o'ring ring (33). The position in dashed lines shows the axis in its forward and seal position.

Figure 6 illustrates the simplified section of another embodiment of the invention in which the drill (220) defines the first seat (200) against which the elastomeric plug (244) carried by the piston (243) sits without interposing no species, not illustrated version, and same drill (220) at its lower end defining the second seat (230) against which it obtains the body (224). It is also possible to construct a piston (243, 244) that is seated against an elastomeric plug (217).

All details concerning the fire safety channel have been omitted in all figures as this is a known feature of the state of the art and works independently of the means illustrated and described herein.

In any case, all constructions of the present invention practically have a drill 135, see Figure 9, which in a normal way communicates the interior of the container with the exterior or the environment. Within this drill and according to the rules already established, there is a breakable disk that rests on a melt plug. When producing a heat source, for example 85 ° - 90 °, the plug melts, breaks the disc and releases the gas outlet, preventing explosion of the container.

With respect to the construction of Figures 8 to 11, an embodiment is shown with its drive shaft perpendicular to the overflow safety valve shaft, the latter being coaxial to the container shaft.

In the construction of Fig. 7, the drive shaft linked to the steering wheel has a cam that cooperates against a rod that hits the valve for excess flow. This eccentric, to prevent premature wear, requires a surface hardening process to be made of a harder metal, as its wear may be relevant and over time decrease its efficiency. The cost of producing such an eccentric is high, which puts this valve at a high price level.

Another particularly important drawback which also solves the realization of Figures 8-11 is the fact that the pressure within the cylinder or tank may be relevant, and each time it is necessary to reset or mechanically reset the safety valve due to overheating. flow rate to its open position, a high back pressure must be overcome inside the container or cylinder.

In Figures 8 to 11, reference (1) indicates the nozzle of the container or vessel containing the pressure fluid. Within this portion of the container (1), a portion (101) of the record body is traditionally bound, (102) being the portion thereof that is projected outwardly of the container (100). It is noted that part (101) of the registration body has an axis XX parallel or coaxial to the axis of the container (100), and the outer portion (102) has an axis YY that results substantially perpendicular to XX.

The present invention contemplates the existence of a first passage divided into two sections, a first branch coaxial to the YY axis, or perpendicular to the longitudinal XX axis of the pressure fluid containing container.

This first passageway portion has a portion of the cylindrical drill (103) coaxial or parallel to the YY axis and located in the portion of the register body (102) protruding out of the cylinder or receiver, which is continued by a section of the passway. (104) of smaller diameter and coaxial to (103). At the beginning of the smaller diameter section of the passage 104 is a first annular valve seat 105 concentric to the drill 103, resulting in this smaller diameter section of the coaxially disposed passage 104. with the shaft (103) and the annular seat (105). Consequently, the first leg of the first passage is composed of the parts (103-104) coaxial and communicated to each other.

The second branch (106) of the first passage is parallel to said longitudinal axis XX of the container and therefore, this second branch (106) is substantially parallel to branch (103-104) and intercepts it (104) "waters up" from the first valve seat (105). This second branch (106) is at least partially located in the portion (101) of the registration body disposed within (1) of said container.

Within the larger diameter cylindrical drill (103) is housed a rod (107), the end of which (108) compared to said first seat (105), has a plug (109) complementary to said valve seat. shutter seat 109 may conveniently be a body made of an elastomeric material such as Grillon® capable of performing a hermetic seal relationship against said seat 105 determining the first obturating valve means.

This rod 107 is axially displaceable between a "waters down" end position, which defines the opening of said first valvular means (109-105), and another "waters above" end position, which defines the closing section on said first seat (105); "below the waters" of said first obturating valve means (109), the rod (107) has a trochanic portion (110), followed by a reduction (111) in diameter, part of which has a prominence (111a) from the register body 102, where and in a known manner, a control means such as a steering wheel, a lever, etc., not shown, may be coupled. In cooperation with said frustoconical projection (110), within the cylindrical drill (103), a plug (112) is coupled coaxially, which at its upper end and surroundings (110) has a complementary conical step ( 113) said frusto-conical portion (110). In the "downstream" end position that defines the opening of said first valve means, the displacement out of the rod (107) by turning on an inner threaded portion of (112) or the same drill (103), determining a rod end stop for the rod and defining a hermetic seal seat between the rod and the body of the register by complementary seating (110) against (113).

Then, each time the ruptured hermetic seal over the first valve seat (105), upon reaching the top of its outward or "downstream" path, the rod (107) automatically establishes a hermetic seal relationship that closes the passageway. through the gaps between the moving components. This sealing action may be supplemented by means of the existence of an "O" or O-ring (114).

At the "waters above" end (108) of the pole facing the first seat (105), it attaches to a coaxial rod (115) to and through the first seat, housing said rod - 115 displaceable - coaxial in position. portion (104) of the smaller diameter first passage, said rod (115) being axially displaceable together with said rod (107) along the entire length of said first passage portion (104).

The second branch of the first passage, which is perpendicular to and intersects with the first branch at (104), has a smaller diameter portion (106), the continuation of which said portion of the second passage (106) waters above. "has a second seat (116) which determines a coaxial expansion of the diameter of said passageway; facing the second seat (116) coaxially disposed with the axis of the projection (106), a second portion (117) of the second branch of the first larger diameter passageway (106) where selectively displaceable housing is located at the axis length of (17), a second plug (118) whose end (119) confronts the second seat (116) is of geometry would complement said second seat, defining a second obturator valve means This second obturator body (118) is permanently requested when distancing from said second seat (116) by a calibrated elastic means (120).

The base (121) of the obturator body (118) defines a pushing surface that confronts fluid inlet within the body of the recorder from inside the container or tank (1), with the complementary portions of said second obturator body in the its mutually spaced position relative to the second seat defines a fluid passage (122) as shown in Figure 3 which, depending on its speed of passage, determines a Venturi effect which achieves a depression capable of overcoming the contrary demand exerted by said fluid. calibrated elastic medium (120), this second medium shutter (119) and second seat (116) conforming, an absolute overflow shut-off safety valve defining the pressure within the container an axial bias over said base second shutter body. It is a fundamental condition of the invention that this second seat 116 is located in the registration body 101 and within the container enclosure.

The second smaller diameter projection (104) of the first passage communicates with a second passageway (123) whose — whose "waters above" end opens into the container at (124), see Figure 3, which is second passage (123) is axis substantially parallel to the axis XX of the second branch of the first passage and independent of the first passage; within the second passage (123) a third shutter means (125) is seated. This third obturator means has a body which, "above water", ends in a portion (129) such as a complementary frusto-conical portion cooperating with a complementary third seat (126) thereof and performed in that second passage. Just after this portion (126), the second passage is reduced in diameter and therein, axially displaceable, houses an end of a finer needle or body (130), this third obturator method (125) being permanently requested for its obturation position by an elastic means (127) which reacts against a plug (128) permanently in communication with the interior of the tank or container (100) via an open passageway (124).

In said shutter position, this third middle shutter (125) has in its extreme protruding projection (130) and according to Figure 3, needle-shaped and normally housed within the reduced diameter projection (104) of the first branch of the first passage and perpendicular to the axis, YY5 from. same. The length of said rod (115) is such that in the obturation position of the first valve seat (105), said end (131), see Figure 3, of rod (115) contacts and requests "upstream" displacement to said protruding end (130) of the third middle shutter (125), breaking the seal ratio in the third shutter (126-129) by establishing pressure communication within the container (100) with the obturating surface of the second middle shutter (119) .

By equalizing or equalizing the pressures by this mechanical action, it is achievable that the same internal pressure of the container (100) returns the body (118) back to its normal working position, ie with the second shut-off valve open. whereby it is now possible to re-open the first valve seat (105) without any effort. - -

In order to lighter the tank, pouring the contents, as this embodiment is sufficient to displace, the average carrera the rod (107) and displacing the end (130), preventing overflow shutter.

Finally, in a non-limiting and constructive detail of the invention, the obturator body 118 is limited in its "upstream" movement by a washer (139) locked in position by the same support (128).

In practice and when constructing the model, as shown in Figures 8 to 11, these are complemented by the following public domain components, on either side of the protruding projection (102) of the registration body a projection or two bodies (132) are projected. at whose ends (133) open respective channels (134) which communicate internally with (103), the fluid leaving (134). There, in a known manner, the conduits that carry the fluid are coupled to the various mechanisms or components to be served.

There is also a channel (135) which communicates with the outside and into which is housed a breakable disc (136) which presses against a melt or fusible part (137) held by a support (138) with a selectively occluded passage by said part. melt (137). As has been said, this known feature determines a mandatory temperature fuse, the use of which prevents the explosion of the tank or container in the event of a fire by melting the plug, whereby the disc (136) breaks and the fluid is dumped outwards.

9.- DESCRIPTION OF THE MODEL

As can be seen from the accompanying drawings and are an integral part of this report, the Total Locking Safety Valve Technical Arrangement comprises a body that can be coupled to or coupled to said container having at least a first communicating passage between the inside and outside. the container, said passage being provided with selective shutter means that define a record; protruding outwards from the container a portion of said coupling body and having at least one means of coupling to an outer duct communicated with said passage "waters below" of said means of obturation of the record, characterized as said first The passage presents a first seat located "waters below", in relation to the entrance of the fluid inlet to the body of the record from the inside of the container and that defines a medium of selective obturation of the fluid passage, and at the end "waters above", in relation to the first seat, said passage has a second seat; housed within the first passageway is a axially displaceable pole between a "waters below" position of the first seat defining the opening of the first valve seat and another "waters above" the previous seat defining the closure of said valve seat over said first seat pass seat; the continuation of said first seat, the rod has "downstream," a frusto-conical portion, followed by a diameter reduction and protruding out of the body of the record, said body having a complementary seat relative to said frusto-conical portion, which It constitutes an endstop of the rod and defines an airtight seal seat between the rod and the body of the record; whereas frontally to the second seat is arranged axially to the corresponding branch axis of the first passage, a obturator body of geometry complementary to said second seat, said obturator body being permanently required to separate from said seat by a calibrated elastic measurement, defining the at the base of the obturator body, a pushing surface facing the inlet of the content within the registration body, and the frusto-conical complementary portions of said obturator body and its complementary seat in their distanced position form a fluid passageway, which is a function of which of the throughput velocity determines a venturi effect that defines a depression capable of veering the antagonistic request exerted by said calibrated elastic measurement, forming an absolute overflow blocking safety valve determining the pressure inside the container an axial request on the base of said shutter body 广 said second-ass then it is located in the body of the "record" within the container's enclosure, extending the axial vastus to such a length that when said vastus is in its obturating position over it. first seat, exerts a push request over a plug measurement by equating the pressure inside the container with the pressure within the first "water above" passage of the first seat.

Claims (5)

1.) "Technical arrangement introduced in TOTAL LOCK SAFETY VALVE", comprising a body coupled to said container having at least one first communicating passage between inside and outside, said passage being provided with selective shutter means defining a record; protruding outwardly from the container, a portion of said coupling body and having at least one measurement for joining an outer conduit in communication with said passage "water below" said record obturation means is characterized by at least one first passageway. It has a first seat located "water down" relative to the fluid entry into the body of the register from within the container and which defines a selective flow rate after the fluid pitch, and its "water = up" end relative to it. first seat, said passage has a second seat; Within the first passage there is a vastly axially disposable seat of a "position" "water" on the "seat" that defines the opening of the first valve seat and another "water above" the former, which defines the closure. of said seat, the vastus has "waters below", a frusto-conical portion, followed by a diameter reduction and protruding out of the body of the record, having said "body of a seat complementary to said frusto-conical portion, which constitutes a top of the course of the vastago and defining a hermetically sealed seat between the vastus and the body of the register, confronting the second seat and arranged axially to the axis of the corresponding section of the first passage, a obturator body of geometry would complement said second assertion. said shutter body being permanently required to separate from said seat by a calibrated elastic measurement, the base of the shutter body defining a pushing surface facing the inlet. of content within the body of the record, and the frusto-conical complementary portions of said obturator body and its complementary seat in its distanced position conforms to the passage of the fluid, which and in ίΐιηςδο of the flow velocity, determines a Venturi effect that defines a depression capable of overturning the request would be exerted by said calibrated elastic measurement, forming an absolute overflow shutoff safety valve determining the inner pressure of the container an axial request on the base of said obturator body; The second seat located in the body of the register within the container of the container extending the axial vastus at a length such that when said vastness is in the obturation position on the first seat, it exerts a push request from inside the recipeinet with the pressure within the first passage, "water above", of the first seat. 2.) "Technical description introduced in TOTAL LOCKING SAFETY VALVE" according to Claim 1, characterized in that said first passage consists of a drill into which a coaxial support is housed therein, establishing the respective upper and lower ends of the bracket, the first "and second seat of ^ alvular ^… ~ 3.) “TECHNICAL ARRANGEMENT INTRODUCED IN FULL LOCK SECURITY VALVE” according to claim 1, characterized in that the vastus command means consist of an axial protrusion thereof, whereby said vastness rotates about its axis and the part of it located the continuation of the first seat has a frusto-conical portion, followed by a reduction by a diameter reduction protruding outside the registration body, said body having a complementary seat to said frusto-conical portion, which constitutes a top of upper limit end for ο vastago and defining a hermetic seal seat between ο vastago and ο body of record. 4.) "TECHNICAL DESCRIPTION INTRODUCED IN FULL LOCK SAFETY VALVE" according to claim 1, characterized in that the vastus control means consist of an axis that rotates with an eccentric portion defining a cooperating yoke profile and in contact with the upper end of said vastness, which determines a obturator body having said axis, a frusto-conical portion followed by a reduction in diameter protruding out of the registration body, said body having a The seat complements the said trunk portion, which constitutes an end of course for the axial translation of the vastus and which defines a hermetic seal seat with the vastus and the body of the record. 5.) "TECHNICAL ARRANGEMENT INTRODUCED IN FULL LOCK SAFETY VALVE" according to Claim 1, characterized in that said first pass is divided into two sections, one first perpendicular to the longitudinal axis of the containers and located at the ροΓςδο of the registration body projected out of the cylinder or container, and a second parallel portion -ao ^ Teixcr ^ l-on-gittrdiimr-derkfSCipidfftS and "at least ^ arcialy- situated in the portion of the registration body disposed in the said container, both of which are in reciprocal communication; the "waters below" portion of this first passage section has a cylindrical drill, which prior to its intersection with the second branch has a first annular valve seat; with the contention of said first seat concentrating on its axis, this first leg continues "above water" through a smaller diameter passageway which intercepts said second leg; within the first leg of this larger diameter passageway is housed a vastness whose end compared to said first seat, having a shutter end in a manner complementary to the first first valve seat, determining a first obturating valve measurement, this vastness being axially displaceable between a "downstream" stroke position defining the opening of said first valvular measurement, and another "downstream" stroke setting that defines the closing seal over said first seat; "Waters below" said first obturator valve measurement, the vastus has a frusto-conical portion, followed by a reduction in its diameter, part of whose length protrudes out of the body of the record, said body having a seat complementary to said position. The conical trunk, which in the "downstream" stroke position, which defines the opening of said first valve, determines a stroke end cap for the vastus and which defines a hermetic seal seat between the vastus and the body. of registration; at the "waters above" end of the vastus that confronts the first seat, a coaxial rod is attached to the first seat and traversing the same seat, housed said axially displaceable rod in the portion of the first passage of smaller diameter, being said axially displaceable rod ^ along with said vast second = passage has a smaller diameter portion in communication substantially perpendicular to the smaller diameter portion of the first passage, the continuation of the right ^ sgtlflda ^ paMagfe. "above mentioned" has a second seat which determines a coaxial expansion of the diameter of said passageway; by confronting the second seat coaxially disposed with the axis of the second leg, a second geometry obturator body would complement said second seat by defining a second obturation valve measurement, said second obturator body being permanently requested in distance from said second seat by a calibrated elastic measurement, defining ab As with the obturator body, a pushing surface that confronts the fluid inlet within the registration body, and the complementary portions of said second obturator body, in their mutually separated position relative to the second seat, define a fluid passageway, ο which, in function of its speed of passage, determines a Venturi effect that creates a depression capable of overcoming the counteracting demand exerted by said calibrated elastic measurement, forming this set of second shutter and second seat measurement, a shut-off safety valve. absolute by overflow, defining the pressure within the container, an axial request on the base of said second obturator body; said second seat situated in the body of the register within the enclosure of the container; to this portion of smaller diameter of the first branch of the first passage communicates in communication a second passage whose "waters above" end opens into the container, this second axis passage being substantially parallel to the axis of the second branch; from the second passage a third obturator is seated cooperating with a third complementary seat thereof, this third obturator is permanently requested for its obturating position by an elastic measuring device, in said obturating position, this third obturator measuring positions its pore. The protruding end is housed within the first branch of the first passage and perpendicular to the axis thereof, the length of said rod being such that, in the position of opening the first valve seat, said end is contacting and requesting. moving "waters up" to said protruding end of the third shutter, establishing pressure communication within the recipient and with the obturation surface of the second obturator measurement.