ES2245172B1 - CONTROLLED FILLING TAP FOR PRESSURE GAS BOMBON. - Google Patents

Abstract

Controlled filling tap for pressurized gas cylinder comprising a body (1) comprising a valve (5) actuated by a handle (9) to release the gas passage (3) or close it, as well as a gas outlet formed by a perforation (13) that flows into the valve, downstream of it, characterized in that it comprises: a chamber (14) formed by a widening (19) of the outlet perforation (13). Said chamber has an upstream end that forms a flap seat (15) and a downstream end as well as before the downstream end, a stop (18) integrated in its wall and retractable under the effect of a force greater than a threshold ; and a hollow cylindrical flap (30), closed by a bottom (33) at its upstream end, this bottom being bordered by a surface that forms a flap seat (35) and housed in the chamber (14). The guiding shoulder (37) continues upstream and downstream along a ramp (39, 40).

Description

Controlled filling tap for gas cylinder under pressure

The present invention relates to a tap controlled filling for pressurized gas cylinder comprising a body that is mounted on the cylinder, which comprises a valve operated by a handle and cooperating with a seat for release the gas passage or close it, as well as a gas outlet formed by a hole that flows into the valve, downstream this.

Certain industrial gas cylinders should not be able to fill up more than in authorized facilities, since you are cylinders require verification and must be used in very precise conditions.

However, the usual bottle taps Industrial gas simply comprise a rotating valve to release more or less a flow, this tap being followed eventually by a pressure reducer, etc.

But such a gas cylinder can be filled in Unauthorized conditions from the tap outlet.

The present invention is intended to remedy this situation and it is proposed to create a controlled filling tap for a gas cylinder under pressure, which does not allow filling authorized by the tap outlet.

For this purpose, the invention relates to a tap according to the description defined above, characterized because it includes:

- a chamber formed by a widening of the exit drilling, this chamber having an upstream end which forms a clapper seat and a downstream end, having also before the downstream end, a stop integrated in the wall of the camera and being able to sneak this one under the effect of a force greater than a threshold,

- a hollow cylindrical flap, open in the downstream end, closed by a bottom at its extreme waters above, this bottom being bordered by a surface that forms a clapper seat that has:

- at least one hole that connects the inside of the cylinder through the wall, at a point downstream of the sealing surface, and a guiding projection that continues upstream and downstream by a ramp.

- the downstream end of the flap is Guided slidingly in the output piercing, while the highlight is guided in the chamber between the clapper seat and the retractable top.

Every push exerted from downstream applies the clapper against its seat and closes the passage towards the bottle, while the gas pressure, after the opening of the valve, push the flap against the retractable stop and open the He passed. This flap can be placed in the filling position of the cylinder passing its projection beyond the retractable top, exerting a tensile force on the flap greater than threshold, to retain the flap away from the surface that forms the clapper seat, and allow the authorized filling of the bottle through its distribution outlet.

According to another characteristic, the tap according to the invention is such that the body comprises above the surface that forms the valve seat, a chamber that receives a valve floating mounted, and a spring that separates the valve from the seat, a diaphragm covering the valve, the diaphragm being blocked by a screw cap on the body and receiving the screw piston provided with a maneuvering handle to screw the piston and close or open the valve.

According to another feature, the clapper It comprises a circular channel for the attachment of a tool intended to let the clapper pass from one position to another of the retractable top. This clapper can be taken by a tool with any orientation since the channel is peripheral.

This solution is particularly advantageous for a fixed equipment that can only be oriented in rotation to adapt to the position taken by the clapper around its axis. Indeed, being the circular symmetry clapper and not being kept locked with a certain orientation, this orientation around its axis it changes according to the movements of the clapper. In In the case of a simple, manual tool, it is easy to turn the tool to find the flap holes and enter the end of the branches and hook. In the case of one more team complex, this orientation is not always possible, the channel peripheral also allows hitching in any position of relative orientation of the flap and the corresponding end of the tool.

According to another advantageous feature, a tool for such a filling tap is made up of branches that they belong to a tubular piece and that are provided, at one end, with a protrusion as well as a rod destined to separate the branches sliding between them, the branches being carried by a handle and the rod by another handle, these two being handles separated from each other by a spring to repel naturally the rod of the area of the branches' projections for that these can approach in the position of introduction of the tool in the clapper, producing the approach of handles the displacement of the rod and the separation of the raised gears on the flap to allow it to be pulled or push it towards its neutralized position or towards the position active

This tool can get caught in the flap holes and, in this case, comprises tabs with projections oriented homologously around the axis of symmetry or of rotation. In the case of a clapper with peripheral channel or circular, the tool can be simpler. It can be about a tool like the one defined above or also a tool comprising protruding projections carried by Two tabs only.

The invention also relates to equipment for the filling of a gas cylinder provided with a controlled filling, this equipment comprising a tool to enter the clapper and allow the clapper to pass through one side or the other of the retractable faucet stop, to put the flap in position neutralized thus allowing filling through the tap or in active position thus preventing filling.

Drawings

The present invention will be described in continued in more detail with the help of an example of embodiment schematically represented in the accompanying drawings in those who:

- Figure 1 is an axial section of a tap for gas cylinder in use position,

- Figure 2 is an axial section of the clapper,

- Figure 3 is a perspective view of the clapper

- Figure 4 is a schematic axial section of the tap of figure 1 in filling position,

- Figure 5 is a view of the tool to neutralize the clapper or put it back in position,

- Figure 6 is an axial section of the tap of the Figure 1 provided with the tool to neutralize the tap clapper,

- Figure 7 is a view whose cut is similar to that of figure 2 of another embodiment of a flap according to the invention,

- Figure 8 shows in section a fitted tap of a clapper according to figure 7 with a tool that allows move the clapper,

- Figure 9 shows the tap with the flap according to figure 7 in neutralized position

- Figure 10 is a sectional view of a Quick clamping manual stirrup for filling a cylinder gas with controlled filling, in the installation position of the cylinder of which only the tap has been represented,

- Figure 11 is a view whose section is similar to that of figure 10, which shows the tool coupled in the clapper

Description of embodiments

According to Figure 1, the invention relates to a tap for a gas cylinder under pressure. This tap called controlled filling does not allow filling the bottle from the gas outlet

Throughout the description, the expressions "waters downstream "and" upstream "refer to the direction of passage normal gas from the bottle to the exit.

The tap is composed of a body 1 provided with a conical threaded part 2 intended to be threaded into a cylinder of gas not shown on side A. This body 1 is crossed by the gas channel 3 that ends at the top by a ring surface 4, raised forming a seat for a valve free 5 lifted by a spring 6 leaning against body 1 around the surface that forms the seat 4 and that pushes against the edge of the valve 5. The valve 5 and the spring 6 are housed in a chamber where channel 3 flows. The part upper body 1 is closed by a cap 7 provided with a threaded piston 8 in rotation with a steering wheel 9. The plug 7 is threaded in the body 1.

The piston 8 has a bulged head 10 that is rests against the bulging surface 11 of valve 5. In this mode of embodiment the valve 5 is enclosed by a flexible veil 12, for example metallic. This veil 12 can be elastically deformed by the head 10 of the screw 8 to push the valve 5 against the seat 4 that closes the passage or on the contrary releases it.

The chamber in which the gas that leaves the channel 3, when the valve 5 is lifted from its seat 4, it is attached to an exit perforation 13. This perforation comprises a chamber 14, formed by a widening of the diameter of the exit drill 13. This chamber 14 has a water end down 15 and an upstream end 16. The upstream end forms a sag between the widened diameter part and the part of normal section of the gas outlet perforation 13. In this off-hook there is a seal 17. The chamber 14 also it is provided with an integrated stop 18, retractable in its peripheral housing when repelled by a force greater than a threshold defined by the elasticity of the stop. This cap 18 integrated in a peripheral slot of the chamber 14 is a ring party that is normally cantilever with respect to its groove. The downstream part of chamber 14, the enlarged part or extension 19 of this chamber 14 and gas outlet drilling 13 are made in piece 20 threaded into body 1. This realization is necessary for the placement of the pieces as You will see below. Piece 20 is threaded by filleting 21 on a corresponding filleting of body 1 and at its end It has a filleting 22 to connect the output equipment, particularly the pressure reducer not shown.

Chamber 14 and extension 19 house a flap 30 shown separately in Figures 2 and 3. The flap 30 has a hollow cylindrical part 31 whose water end down 32 is open while the upstream end 33 is closed by a bulged bottom 34, bordered by a projection 35. The bulging form 34 is intended to cooperate with the board 17 when the flap 30 is pushed to the left (figure 1). The flap 30 is provided with holes 36, for example three holes 36, distributed regularly, peripherally, in the wall to allow fluid to pass from the outside of the flap towards the inside of the cylindrical part 31 thereof. Finally, in his outer surface, the flap 30 comprises a guiding shoulder 37 having a circular peripheral surface 38 bordered by both sides of ramp-shaped surfaces 39, 40. The surface of ramp 40 on the other hand forms a projection 41 intended to serve for supporting a compression spring 42 to push the flap 30 upstream, leaning against the gasket 17 that forms a seat of tightness, at the entrance of the gas outlet perforation.

The flap 30 is guided by its surface cylindrical 31 in perforation 19 which continues chamber 14 which has a diameter sufficient to receive the spring surrounding the less partially the cylindrical surface 31.

In normal use position (figure 1) the clapper 30 is placed in chamber 14 so that its highlight 37 is between the joint 17 and the retractable stop 18. By the gas pressure coming from the cylinder, the flap 30 will be repelled against the retractable stop 17 by compression of the spring 42. The gas from the bottle then passes from the periphery of the flap 30 through the perforations 36 and in the flap 30 to escape through exit 32, 13.

The gas outlet is represented by the arrow at end B.

The tap with its clapper 30 that occupies the position shown in figure 1, if you want to reload the cylinder through the outlet 13 and the valve 5 open, the flap 30 will already be applied against its seal 17 by the spring 42 and the differential pressure exerted by the gas introduced at exit 13 adheres even more the flap 30 against his seat, thus blocking the passage. The gas cannot recharge the bottle.

To load the bottle, you have to put the clapper 30 in the position shown in figure 4. In this position, the shoulder 37 of the flap passes beyond the stop retractable 18. The flap 30 is retained in this position with sufficient force for the gas jet to be applied in the exit 13 to load the bottle (in the opposite direction of usual route of gas distribution) is not enough to pass the flap beyond the retractable stop 18. When being the flap 5 separated from its seat, the filling gas can pass inside the flap 30, exit through holes 36, and then then pass under valve 5, raised (the screw being 8 in the upper position) and arrive inside the bottle. At the end of filled, the valve 5 is closed with the handwheel 9 and after having Gas supply disconnected from outlet 13 can be left pass the flap 30 beyond the retractable stop 17 on the position represented in figure 1.

Figure 5 shows a tool 50 that allows neutralizing or replacing the flap 30 and figure 6 shows the placement of tool 50 to neutralize the clapper 30.

This tool 50 consists of a first handle 51 carrying a sleeve 52 terminated by three branches 53 distributed in an equiangular manner and each endowed 54 curved towards the axis and of a shoulder 55. The tool comprises also a second mobile handle 56 with sliding relative to of the first handle 51. This second handle 56 carries a rod 57 that crosses the first handle 51 and the sleeve 52 and It serves as a separator. This rod 57 is normally set back in tube 52. To neutralize the flap 30 for filled with the bottle, the tube 52 is introduced with its branches 53 by tap hole 13.

By resting on the handle 56, it is done advance the rod 57 to separate the tabs 53 by effect of wedge and hook the projections 55 well into the holes 36. In that moment you can pull the clapper 30 to the right according to the Figure 6 to use the effect of ramp 40 to retrace the stop 18 and let the projection 37 pass under the stop 18.

The handle 56 is released. spring 58 that separates handles 51 and 56 retracts spindle 57 and the 54/53 ends of the tool 50 return to the position normal. Then the tool 50 can be removed from the flap 30 thus displaced.

To put the clapper 30 in position normal, not neutralized, just enter tool 50 by the outlet hole 13 of the tap and support with the end 54 of the tube 52 against the inside of bottom 33 of the flap 30 and use the other ramp 39 to squeeze the stop 18 and let pass the flap 30 beyond the stop, in the position of the figure one.

Figure 7 shows, in section, a variant of realization of the flap that allows the use of a tool different from tool 50 described previously.

This 30A clapper is essentially the same shape as in figure 2 and carries the same references for same elements whose description is not going to be repeated. This variant of flap 30A is distinguished from the flap 30 above by a channel 43 made in the cylindrical part 31. This circular channel 43 it is finished on two stop surfaces 44, 45 to receive the end of a tool that does not come in holes 36. In this case, the tool has not been oriented with respect to the clapper for get into the holes. The tool hitch is possible, whatever the rotation orientation of the clapper. This possibility is essential for a machine or equipment that cannot rotate in relation to the tap and by consequently, with respect to the clapper. It is done analogously to tool 50 already described, except that this tool 50A It has one end formed by two tabs 53A with contours rounded exteriors substantially ball-shaped and between that goes the end of the rod 57 pushed by one of the handles, the other being fixed, so as to separate the two tabs 53A and make the two projections 55A, rounded, enter on channel 43. You can then pull the flap 30A towards the right according to figure 7 leaning eventually against the stop surface 44. The flap 30A can also be pushed to the left leaning against the stop 45.

Figure 8 shows the placement of a tool 50 as the tool of figure 5 in channel 43 of the tap 30A of a tap whose different elements already described They will not be described again here.

Figure 9 shows the position of the clapper 30A, neutralized after use of tool 50 according to figure 7 or that of figure 8.

Figures 10, 11 show the application of the invention to a quick fastening collar 100.

According to figure 10, the tap is represented seen from below, appearing only its handle 9 and body 1 placed on a pointer 101 carried by branch 102 of collar 100. The body 1 comprises, in this place, a housing to receive the pointer screw This accommodation is in the position diametrically opposite to that of piece 20 threaded into the body one.

Against this piece 20, the part of junction 103 of a rotating head 104, provided with a handle 105. This head moves, moving in translation, by a ramp effect 106, not detailed, with respect to the fixed part of this manual collar. This fixed part is represented, for example, by branch 102 and other elements such as the handle 107 '.

The rotating part turns half a turn around of the XX axis. Due to the ramp effect, the cylindrical part 103 advances and enters the end of piece 20 to perform the tightness Head 104 comprises a filling conduit 107 connected to a gas source not shown. This duct 107 flows into the chamber 108 that communicates with the interior of the piece 20 and the tap by the funnel-shaped passage 109 made in piece 103.

The tool of this manual collar that allows neutralizing or activating the 30A flap is analogous to that described previously. This tool 50A comprises a piece 51A equivalent to the handle 51 and a second identical handle 56 to the second handle of the tool 50. The two pieces 50A, 51A are separated by a spring 58 and slide one respect of other. Regarding the independent tool of figure 5, this tool is distinguished in that it is mounted on the collar, and in in particular, in the piece 110 that serves as a stop to the piece 51A.

An antagonist spring 111 acts on the set under the conditions described below.

The 50A tool consists here of two branches 53A located on both sides of the plane of Figure 10 (in the Figure 7, the tool is rotated 90º around its axis XX).

These two tabs 53A are terminated in projections. rounded 55A intended to separate and enter channel 43 (see figure 7) to fit in it.

Branches 53 are in solidarity with piece 51A while rod 57 is integral to the second handle 56.

At the beginning, to introduce the 50A tool in the flap 30A, is pushed on the handle 56. It pushes the piece 51A and the assembly moves to penetrate the clapper 30A When the assembly is in place, piece 51A bumps, in fact, against the piece 110, although pushing on the handle 56 (pushing it to the left according to figure 10), the rod 57 with respect to the tabs 53A that are separated and are Block in the channel.

In this position, rod 57 can be locked. with the help of a retractable latch not shown for Solidarity handle 56 and piece 51A. Then you can throw of the flap 30A to the right beyond the stop 18 to neutralize it The filling operation can then be carried out at through conduit 107 and paths 108, 109 and below the tap.

At the end of the filling, to put back in active position the flap 30, just push on the handle 56 to allow the flap 30A to pass past the stop integrated retractable 18. Next, the handle 56 of part 51A, releasing the latch no represented. The spring 58 removes the rod 57 which allows removal the set since the tabs can approach and exit the channel 43.

50A tool placement in the channel shows that there is no need to rotate the tool around its axis as would be necessary to engage with tool 50 in the holes 36.

It should also be noted that tool 50 it can, in principle, also be used with channel 43 of the 30A clapper. But, the use of a tool is more effective with two branches as the 50A tool that is simpler and allows that hooks better on channel 43.

Figure 11 shows the position of the tool introduced in the clapper, but the latter is still in active position.

Claims (5)

1. Controlled filling tap for cylinder gas under pressure comprising: - a body (1) that is mounted on the cylinder, which it comprises a valve (5) actuated by a handle (9) and which cooperates with a seat (4) to release the passage of gas (3) or close it, as well as a gas outlet formed by a perforation (13) that flows into the valve, downstream of it, characterized in that it comprises: - a chamber (14) formed by a widening (19) of the output perforation (13), this chamber having a upstream end forming a clapper seat (15) and a downstream end, also having before the downstream end a stop (18) integrated in the wall of the chamber (14) and being able to sneak this under the effect of a force greater than a threshold, - a hollow cylindrical flap (30), open at the downstream end (32), closed by a bottom (33) in its upstream end, this bottom being bordered by a surface which forms a flapper seat (35) that has at least one hole (36) that connects the inside of the cylinder through the wall, at a point downstream of the sealing surface, and a guided highlight (37) that continues upstream and downstream down a ramp (39, 40), the downstream end of the clapper is sliding guide in the exit bore (19, 13), while the highlight (37) is guided in the chamber (14) between the clapper seat (16) and the retractable stop (18). 2. A tap according to claim 1, characterized in that the body (1) comprises above the surface that forms the valve seat (4), a chamber that receives a floating mounted valve (5), and a spring (6) which separates the valve (5) from the seat, a diaphragm (12) that covers the valve, the diaphragm being blocked by a plug (7) threaded into the body (1) and the latter receiving the screw piston provided with a steering wheel (9 ) to thread the piston (8) and close or open the valve. 3. Tap according to claim 1, characterized in that the flap (30A) comprises a circular channel (43) for engaging a tool intended to allow the flap to pass from one position to another, with respect to the retractable stop. 4. Tap according to the preceding claims characterized in that it has a necessary tool for controlled filling with a pressurized gas cylinder consisting of branches (53) that belong to a tubular piece and are provided, at one end (54) , with a shoulder (55) as well as a rod (57) intended to separate the branches sliding between them, the branches being carried by a handle (51) and the rod (57) by a handle (56), these two handles being separated from each other by a spring (58) to naturally repel the rod (57) from the area of the projections (55) of the branches (53) so that they can approach in the position of introduction to the tool in the flap, producing the approach of the handles (56, 51) the displacement of the rod (57) and the separation of the projections (55) engaged in the flap to allow it to be pulled or pushed towards its neutralized position or towards the active position. 5. Faucet according to claim 4, characterized in that the tool comprises bulges (55A) in a domed manner carried by two tabs (53A).