FI91666B - Gas cylinder valve handwheel - Google Patents

Description

91666

Gas cylinder valve handwheel

The invention relates to a gas cylinder valve handwheel according to the preamble of claim 1.

In addition to their cover function for the fastening nut, the covers of the known handwheels for gas cylinder valves are additionally given the identification mark 10 of the respective gas supplier by means of a corresponding coloring and printing. They are clamped to the handwheel in such a way that they can only be removed from the clamping space with a special tool. The guards thus form almost fixed components of the handwheels. The material of the shields is a copolymer.

15 Until now, the management, storage and procurement of gas cylinders, which differ in content and size, has required a relatively large amount of time and effort in filling companies. This is due to the identification of the gas cylinders, the marking of the gas cylinders according to their contents and size, the different filling quantities, the customers and the maintenance equipment to which each gas cylinder must be subjected for safety reasons. Card index cards and similar lists have generally been used for this purpose. Furthermore, in the known case, the misidentification and recording caused by human insufficiency and transmission errors must be taken into account. This can lead to situations, especially in the case of very dangerous (toxic) gases, which can lead to injuries or even death in the event of an accident.

The object of the invention is to improve the handwheel described in the preamble of claim 1 so that the handling, storage and acquisition of gas cylinders of different contents and sizes can be carried out not only more rationally but also more safely, excluding as far as possible human error.

2 91666 This object is solved according to the invention by the features set forth in the characterizing part of claim 1.

Irrespective of the material, be it e.g.

5 steel, aluminum, gray cast iron, plastic or zinc injection molding, each handwheel according to the type definition can be equipped with a plastic, kind-of-minded cover, or can be retrofitted. In particular, the portable sensor / reading unit (Control-Unit) makes it possible, via an induction coil 10, to provide the chip with the information necessary for the economical handling, storage and acquisition of gas cylinders and to read this information again easily and simply and to enter it electronically. In this way, each filling movement 15 can always and quickly get a complete overview of the situation of the gas cylinders in its possession. The time and human labor required to detect and process data is greatly reduced. But in particular, the disadvantages which, due to human inadequacy with regard to misidentification, misunderstanding and incorrect reproduction of any information, could not be avoided are ruled out. The invention particularly advantageously takes into account the safety idea in the very sensitive area of gas filling.

A first preferred embodiment of a cover according to the invention is apparent from the features of claim 2. Such a shield can be manufactured, for example, by first attaching the induction coil together with the chip to the shield layer 30 with a pin and then properly encapsulating the induction coil and the chip with a watertight joint of both shield layers in the shield. The two protective layers are preferably joined by welding. Such a cover may be provided with a tubular projection 35 for the inner cover layer, which extends over the fastening nut 3 91666 and is thus pulled along as far as the handwheel for tightening. In addition, the peripheral areas on the circumference of the outer, in particular spherical, segment-shaped cover layer preferably act to provide a tightening attachment to the corresponding notches on the surface of the handwheel.

Another preferred embodiment of the invention, which requires a tubular projection projecting in the cover and extending over the fastening nut, is known from the features of claim 3. In this case, the induction coil is embedded together with the chip in the annular channel between the two tubular projections and encapsulated there by sealing the annular channel in a watertight manner.

The closing of the structure comprising both tubular projections 15 according to claim 4 takes place preferably by means of a circular ring-shaped cover, for example by welding.

A third, equally preferred embodiment of the invention is apparent from the features of claim 5. In this construction, the induction coil is protected in the area between the two tubular projections. It is preferably located on the tubular projection of the inner protective layer. As a result, the induction coil and the chip can be pre-assembled on the inner cover layer and then the inner cover layer can be connected to the outer cover layer, in particular by welding.

As in the case of the embodiments described above, in this case the outer protective layer is curved in the form of a spherical segment. The edge areas on its circumference 30 are pressed against the corresponding notches on the upper side of the handwheel. The inner cover layer may be provided with a tubular projection which then extends over the fastening nut and is pulled up to the handwheel to fasten the cover.

91 666 4

The invention is explained in more detail below in connection with the exemplary embodiments shown in the drawings.

Figures 1 to 3 show three different embodiments of a valve hand-5 wheel mounted on a gas cylinder.

In Figures 1 to 3, the valve stem of a valve device for a gas cylinder, for example a CO 2 cylinder, denoted by the number 1, which valve device is not otherwise shown in more detail.

A handwheel 3 is torsionally fitted to the valve stem 1 by means of a nut 2. For this purpose, the longitudinal portion 4 of the valve stem 1 is made rectangular, on which the handwheel 3 with a correspondingly fitted opening 5 is pushed so that it presses against the bottom 6 of the valve stem 1. . The rectangular opening 5 forms a structural part of the tubular projection 7, the tubular projection projecting into a recess 8 in the middle of the handwheel 3 on the upper side. The length of the tubular projection 7 is dimensioned so that the nut 2 for securing the handwheel 3 to the valve stem 1 is completely in the handwheel .

In order to protect the nut 2 and also to identify the gas supplier in question, a colored plastic cover 9, 9 ', 9' 'is placed over the nut 2, the peripheral edge areas 10 of which are pressed into the notches 11 on the upper side 12 of the handwheel 3. 9, 9 ', 9' 'can only be detached from the mounting space by means of correspondingly shaped tools.

In order to develop the handling, storage and procurement of gas cylinders 30 on an IT basis, induction coils 13, 13 ', 13' 'and the chips 14, 14', 14 '* connected thereto have been incorporated in the plastic covers 9, 9', 9 '' of Figures 1-3 in a watertight manner. to store data. With the aid of a correspondingly developed, in particular portable sensor / reading unit (not shown in more detail), the information necessary in each case can be stored in the chip 14, 14 ', 14' 'and this information can likewise be read again.

Il \ 91 ό66 5

In the embodiment of Figure 1, the plastic cover 9 is made double-layered. The outer cover layer 15 is curved in the form of a ball segment and provided with an inwardly directed central pin 16. An induction coil 13 is arranged on the circumference of the pin 16. A chip 14 is embedded in the space between the inner cover layer 18 and the outer cover layer 15 to the outer protective layer 15 from a watertight welded plate 19 and from a plate 19 vent-10 from a tubular projection 20 projecting in the direction of the brick spindle 1, which extends protecting the nut 2. The tubular projection 20 extends approximately to the end face 21 of the tubular projection 7.

In the embodiment of Figure 2, the plastic cover 9 'is made 15 in one layer. The inner tubular projection 23 in the direction of the nut 2 protrudes from the spherical protective layer 22 in the form of a spherical segment. The length of the tubular projection 23 is dimensioned so as to extend approximately to the end face 21 of the tubular projection 7 and thus extends over the nut 20 2.

A second tubular projection 24 is arranged on the circumference of this tubular projection 23 at a radial distance therefrom. Both tubular projections 23, 24 form an annular channel 15 into which an induction coil 13 'and a chip 14' connected to the induction coil 13 'are embedded. The watertight encapsulation of the induction coil 13 'and the chip 14' is ensured by a circular ring-shaped cover 26 placed at the mouth of the annular channel 25 and welded tightly to both tubular projections 23 and 24.

The embodiment of Figure 3 in turn shows two layers of plastic cover 9 ''. The outer cover layer 27 comprises a tubular protrusion 29 spaced apart by both cover layers 27 and 28, the length of the tubular protrusion 29 corresponding approximately to the thickness of the outer cover layer 35 27.

6,91666

From the inner cover layer 28, a tubular protrusion 30 extends in the direction of the outer cover layer 27. This tubular projection 30 is dimensioned to be smaller in diameter than the tubular projection 29. It can be seen that the induction coil 13 '' embedded in the annular gap 31 between the tubular projections 29 and 30 is positioned against the tubular projection 30 and the chip 14 '' is located inside the tubular projection 30. The tubular projection 30 is spaced from the outer protective layer 27.

10 When installing the plastic cover 9 '', the induction coil 13 '' and the chip 14 '' are first placed on the inner cover layer 28. The outer cover layer 27 and the inner cover layer 28 are then welded to the tubular projection 29 and the opposite inner cover layer 15. attached to each other via surface 32. The mold cover 9 '' can then be attached to the handwheel 3 so that the edge areas 10 lock into the notches 11. In addition, the plastic cover 9 '' is attached to the nut 2 by means of a tubular projection 33 extending over it.

Claims (5)

1. Handwheel for a gas tube valve, which handwheel can be fixed to the valve spindle (1) by means of a nut (2) immersed in a central part on the upper side of the handwheel located (8) and which handwheel is provided with a clampable cap (9, 9 ', 9' ') which covers the depression (8) and is made of synthetic material, characterized in that in the cover (9, 9', 9 '') an watertight coil (13) is integrated , 13 ', 13' ') and a tile (13, 13', 13 '') connected to the induction coil (14, 14 ', 14' ') for storing data. Hand wheel according to claim 1, characterized in that the cover (9) has two layers and comprises a pin (16) which pours the two cover layers (15, 18) at a distance from each other, the pin (16) ) penetrates the induction coil (13), and the chip (14) is laterally submerged next to the induction coil (13) in the space (17) between the adhesive layers (15, 18). Hand wheel according to claim 1 comprising a cap (9 ') provided with a tubular projection (23) extending over the nut (2), characterized in that a second cylindrical projection (24) is provided on the tubular projection (23). ), in a radially spaced therefrom, and that in an annular channel (25) forming the two tubular projections (23, 24), an induction coil (13 ') and a chip (14') have been lowered. 4. Handwheel according to claim 3, characterized in that the orifice of the annulus (15) is closed with a circular annular lid (26). Hand wheel according to claim 1, characterized in that the cap (9 '') has two layers and comprises a tubular projection (29) which pours the two cap layers (27, 28) at a distance from each other, which is a projection. directed toward the outer casing layer (27), and a smaller diameter tubular projection (30) extending from the inner casing layer (28) to the outer casing layer (27), the induction coil (13 '') being mounted southward in the region between the two tubular projections (29, 30), and the chip (14 '') on the inside of the tubular projection (30) directed towards the inner cover layer (28). «·