FI80396B - Arc-cutting method and device and use of liquid electrolyte - Google Patents

Description

t 1 80396

Method and apparatus for burning hemp and the use of liquid electrolyte

The invention relates to an arc flame cutting method and apparatus and to the use of a liquid electrolyte.

Conventional arc flame cutting equipment uses either an oxygen-acetylene gas mixture which, when brought in close proximity to the object to be cut and by the high temperature it develops, melts the object to be cut, or consumable flame-cutting electrodes of.

It is characteristic of these traditional methods and tools, and at the same time detrimental, that the tools have to be brought in the immediate vicinity of the object to be cut, which is time-consuming and often even impossible due to cramped spaces. When using traditional methods, the smoke generated by the combustion of the substance causes its own disadvantages, of which e.g. severe ventilation problems and disadvantages in terms of visibility1 e. Among the disadvantages, the slowness of the combustion operation itself and the usually inaccurate and uneven 1 stiffness must be mentioned.

It is an object of the present invention to eliminate these disadvantages and weaknesses inherent in the prior art arc combustion cutting methods and apparatus and to provide a completely new method and apparatus for arc combustion surgery. the advantages of speed, ease of handling and a more accurate work result.

These objects have been achieved by an arc-burning method and apparatus according to the invention, the specific features of which are set out in the appended claims 1 to 10.

The advantages of the invention should be mentioned; that the device 1 '2 80396 according to it enables the distance of the firing cut, which may be large, from the firing point 1, which substantially facilitates and accelerates the firing of firing objects in confined spaces; that the structure of the device is relatively simple and thus inexpensive to manufacture; that the use of the device is independent in environmental conditions, which also allows for significant simplification and automation of underwater fire cutting work to be performed by a robot compared to the methods and equipment currently in use; and further, that the wear of the non-window fluid is quite small compared to the length of the cutting mark.

The present invention also relates generally to the use of a liquid electrolyte as a characteristic jet, preferably a mercury jet, in arc surgery for generating an arc and removing melt 1 from a non-target object.

The invention will now be described, by way of example, with reference to some preferred embodiments thereof, with reference to the accompanying drawings, in which Figure 1 schematically shows a side view of a first embodiment, Figure 2 schematically shows a second preferred embodiment of the invention: in a third embodiment.

According to the basic principle of the invention, an electroconductive liquid jet is directed at an object covering the combustion by the flame cutting device.

In the first embodiment of the invention according to Figure 1. . one liquid jet 3 is used, which is connected to an electric current; . ; a positive terminal 51 of the source 5, and a flame cutting target; which in this exemplary case is a metal plate, is connected by an electric cable to the negative terminal 52 of the electric motor 5: '3 80396

When the liquid jet 3 encounters the metal plate 4, an arc is created, which melts the plate 4 and enables flame cutting.

In another embodiment of the invention according to Figure 2, an arc enabling combustion cutting is generated at the combustion-cutting section 4, which in this exemplary case is a metal plate, with two cutting jets 3 and 3 'merging at the combustion cutting site, one of which is a liquid jet, i. shower 3, is connected to the positive terminal 51 of the electric current source 5 and a second liquid jet, i.e. jet 3 ', is connected to the negative terminal 52 of the electric power source 5. In this second embodiment, a high temperature arc is generated at the junction of the liquid jets 3 and 3', which also allows the cutting of non-metallic materials.

Even in these hot embodiments, the pressurized flow of non-effluent 1, except that it provides an arc to the cutting object, can remove the melt from the cut groove by the kinetic energy of the effluent. In order to improve the burning efficiency of the arc, it is preferable to use a combustion-promoting powder, preferably a metal tin, lead, aluminum, magnesium, copper or similar powder, in the electrically conductive liquid jet.

In the exemplary case according to Figure 1, the flame cutting device according to the invention comprises a tubular body part provided with a gripping handle 1a, made of a non-electrically conductive, preferably rubber and / or plastic-based material, with 1 non-liquid inflow connection at one end and 1 non-liquid at the other end. the outflow nozzle 2. The nozzle 2 is used to direct the thin jet of liquid liquid 3 1 to the target object 4 and a radially adjustable nozzle opening can be used. When used as 1 non-liquid mercury; head and when the material to be cut is metal, the nozzle opening is preferably located - n. 0.5 ... 1.0 mm. As means x for producing a pressure 1 non-liquid jet 3 is k e k · -. to the combustion cutting device according to the invention with a pressure accumulator -. 13 a pressurized 1 non-liquid fluid 1 11 from which electricity is conducted; a non-conductive hose, e.g. of rubber and / or plastic-based material - 80396 to a non-liquid fluid inflow connection located at one end of the tubular body. In order to maximize the operational safety of the device according to the invention and to minimize current losses, the container 11 itself is also electrically non-conductive and the electrically conductive liquid 1 inside it is connected to the positive terminal 51 of the electric power source 5 by an electric cable inside the container.

To enable a controlled supply of fuel cutting fluid, a shut-off valve can be placed in the tubular body, the position of which is controlled by a trigger or operating lever mounted on the gripping handle.

In this connection, it should be noted that instead of the pressure accumulator 13, other means may be used to provide a flow of cutting fluid from the tank 11 through the nozzle 2 to the combustion-covered object 4. In this case, a liquid pump powered by an electric power source 5 is operatively connected to the trigger. or the operating lever.

In the embodiment according to Fig. 2, the combustion cutting device according to the invention consists of two tubular and lever-like body parts which can be turned at an angle to each other, each having a cutting fluid inlet connection at one end and a nozzle 21, 22 possible to set, the distance of the junction of the cutting fluid jets 3 and 3 'from the nozzles 21 and 22 or the distance 1 of the combustion cutting device from the non-target 4, respectively.

As already stated above, in this second embodiment there is one of the showers, i. mouth 3, in connection with the positive terminal 51 of the power source 5 and working from the showers, i.e. shower 3 ', in connection with the negative terminal 52 of the electric source 5. In order to achieve this, the body of the non-liquid fiber 11 is made electrically non-conductive and constructed in two parts, whereby the sea j- ”second, 1 non-liquid interior is connected. elec -; ..;

Il 5 80396 cable 11a to the positive terminal 51 of the electric power supply 5 and a second interior 1 containing no liquid to the negative terminal 52 of the electric power supply 5.

From each part of the container 11 a separate separate non-conductive fluid flow line or hose 12 leads 1 to the inflow connection at the end of the tubular and lever-pivotable body part.

The pressurization of the cutting fluid tank 11 and the flow of the fluid can be realized in the same way as above by means of a pressure accumulator 13 or by two pumps powered by an electric power source. and in a pump application, the position of the pumps and any associated control valves.

The control nozzle shown in Fig. 3 used in the third embodiment of the invention corresponds in principle to the second embodiment of the invention according to Fig. 2, i.e. it uses two liquid electrolyte jets 3 and 3 ', one connected to the positive pole of the power supply and the other to the negative pole, and thus acting as electric conductors. at a distance from the end of the nozzle 2. The difference with the second embodiment is that the nozzles 21 and 22 are arranged at the end of a common tubular body part, which substantially facilitates the handling of the device according to the invention in its confined spaces.

As can be seen in Figure 3, a helical spring 23 is arranged between the nozzles 21 and 22, which presses them tightly against a rotatable adjusting sleeve 24 arranged around the nozzles 21 and 22. The floating end ends of the nozzles 21 and 22 are made conically tapered. and the adjusting sleeve 24 is formed with a radial inner shoulder 25 which, in order to adjust the angle of the nozzles 21 and 22, rests against the conical surface 26 which created the axial movement of the adjusting sleeve 24 to rotate the ends of the nozzles 21 and 22 towards or away from each other away from you.

The invention has been described above only with the aid of some of its preferred embodiments and applications. This, of course, is not intended to limit the invention, but numerous variations and combinations are possible within the scope of the appended claims. Thus, it should be emphasized that without compromising the functionality of the invention, more than one or two liquid jets or nozzles may also be used, that any suitable substance may be used as the electrically conductive electrolyte, and not only the above-mentioned mercury. Otherwise, it must be emphasized that the details of the invention can be varied within very wide limits.

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Claims (10)

1. A torch cutting method, characterized in that a light beam is generated for an object intended to be burnt by means of at least one object intended to be burnt directed, electrically conductive liquid spray, which is in contact with at least one of the source of the fire source and that of the source of fire is cut off. medium liquid pane energy tube. 2. A method according to claim 1, characterized in that the light beam is generated by means of at least two electrically conductive liquid syringes directed to the article intended to be burned, whereby a liquid syringe is in contact with the positive pole of the power source and another liquid syringe with the current of the liquid source syringe. 3. A light cutting torch cutting device intended to be used with a power source, characterized in that the torch cutting device has the means (1,2) for spraying and directing at least one electrically conductive cutting fluid syringe (3) to a cutting object (4) and a pole of the poles (51, 52) of the power source (5) is joined to the torch cutting object (4) via at least one cutting fluid syringe (3). Light beaker cutting device according to claim 3, characterized in that the torch cutting device has the means (2) for directing at least two electrically conductive liquid syringes (3,3 ') to the cutting device, the poles (51,52) of the current source (5) being joined. the cutting article via said two separate cutting fluid syringes (3,3 '). Light beaker cutting device according to claim 4, characterized in that cutting liquid syringes (3,3 ') are joined at least in the cutting element (4), and in order to increase the firepower the cutting liquid syringe contains a metallic dust, probably tin, lead, aluminum, e.dl. material. 10 80396 Light beaker cutting device according to claim 4, characterized in that the means for directing at least two combustion liquid syringes (3, 3 to the cutting object (4) have a nozzle unit (2), in which existing at least two nozzles (21,) exist between the nozzle (21). adjustable to adjust the distance of the intersection of the cutting fluid sprays (3,3 '). Light beaker cutting device according to any of the preceding claims 3 ... 6, characterized in that it has a cutting liquid container (11), presumably of an electrically conductive material, and, probably electrically conductive, the means (12) for forming a flow. the connection of the cutting fluid between the container (11) and the directing means (2) of the cutting fluid syringe (3). Light beaker cutting device according to claim?, Characterized in that the container (11) is equipped with a pressure accumulator (13) for providing a cutting fluid flow, and that the container (11) is two-part, wherein a part of the container (11) is present. cutting fluid is in communication with the positive pole (51) of the power source (5) and in the second part, respectively, with the negative pole (52) of the current source. Burning cutting device according to any of the preceding claims 3 ... 8, characterized in that in the existing nozzle unit (2), at least two spring-loaded nozzles (21, 22), whose angular position with one another are adjustable by means of a rotatable adjusting hole, (24) located around the nozzles. 10. The use of a liquid electrolyte, presumably, mercury as a light beaker firing syringe to generate the light beaker in a cutting object and to remove the melt from the cutting object. Il