Abstract

When using oxygen gas pipes 3, situations can arise, in particular due to slag return and similar dangers, in which the operator must initiate safety measures. Slag return safety devices are known which, in such a case, ensure that the gas flow is stopped by melting a cap 35 of a heat sensor 5. The response of this outlet valve 6 of the slag return safety device can be recognized, for example, by the fact that the inlet pressure of the existing oxygen gas 4 is used to push pins 21 located in the wall 19 of the oxygen gas pipe 3 beyond the outside 27 of the oxygen gas pipe 3, so that they cannot be overlooked as a warning signal. The movement of the pins 21 can be used to activate further signal systems 30 in order to provide additional indications of this movement optically and/or acoustically.

IPC Classes  ?

• A62C 2/04 - Removing or cutting-off the supply of inflammable material
• C21C 5/46 - Details or accessories
• F16K 17/38 - Safety valvesEqualising valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
• F27D 3/16 - Introducing a fluid jet or current into the charge

Abstract

In a multiple secured coupling device for oxygen lances (1), the male connector (8) of the safety pipe (3), the connection part (18) of the lance holder (2) and also the cap nut (9) have extending safety pieces (10, 11). The male connector (8) can be inserted very far into the female part (19) or the connection part (18) and then located in position by using the cap nut (9). A total of five sealing zones are created and are particularly effective in preventing the escape of highly flammable gases, in particular oxygen.

IPC Classes  ?

• F16L 17/00 - Joints with packing adapted to sealing by fluid pressure
• F16L 19/02 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
• C21C 5/46 - Details or accessories

Abstract

A multiply secured coupling device for oxygen lances (1) is achieved in that both the plug-in part (8) of the safety pipe (3) and the connection part (18) of the lance holder (2) and also the union nut (9) have an extending safety piece (10, 11). As a result, the plug-in part (8) can be pushed a considerable distance into the nut part (19) or into the connection part (18) and then be fixed via the union nut (9). A total of five sealing zones, which in particular together effectively prevent the escape of highly flammable gases, in particular oxygen, are produced.

IPC Classes  ?

• C21C 5/46 - Details or accessories

Abstract

A quick-acting valve 1 having metering relief is used in particular for oxygen lances, wherein the actual sealing body 10 inside the valve tube 2 has a two-part design and accommodates the valve spring 8 with the housing parts 16 and 17 of the spring. The gas is conducted around the sealing body 10, so that the gas pressure cannot have an effect on the actuation by way of the hand lever 3. The rear housing part 17, which is located behind the front housing part 16 can be displaced inside the front housing part 16, and has a flow-promoting design, being displaced against the force of the valve spring 8, and specifically with the help of the hand lever 3, so that it now can be actuated independently of the gas pressure with precise metering control.

IPC Classes  ?

• F16K 1/12 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened

Abstract

A lance holder characterized by a high degree of safety is equipped with a mounting or a pipe fixing, which safely prevents a rotation even of a bent lance pipe in the lance holder. The clamping head has a fixing part and a clamping part which ensure a punctiform fixation by way of displaceable pressure elements, particularly in the form of spheres. At least three such spheres are disposed across the circumference in a distributed manner, and ensure the safe fixation across a large tolerance range with regard to the dimensions of lance pipes. Said large tolerance region is further secured in that sealing sleeves having a larger inside diameter may be used, since the same are no longer deformed in the longitudinal direction in order to provide the seal, but instead are deformed in the radial direction. In summary the high degree of operational safety is also completed by the association of a chip and/or attachment of a nanocoating.

IPC Classes  ?

• C21C 5/46 - Details or accessories

Abstract

A lance holder 1 characterized by a high degree of operational safety is equipped with amounting or a pipe fixing, which safely prevents a rotation even of a bent lance pipe 2 inthe lance holder 1. The clamping head 3 has a fixing part 4 and a clamping part 5, whichensure a punctiform fixation by way of displaceable pressure elements 14, particularly inthe form of spheres 15. At least three such spheres 15 are disposed across thecircumference in a distributed manner, and ensure the safe fixation across a largetolerance range with regard to the dimensions of the lance pipes 2. Said large toleranceregion is further secured in that sealing sleeves 6 having a larger inside diameter may beused, since the same are no longer deformed in the longitudinal direction in order toprovide the seal, but instead are deformed in the radial direction. In summary the highdegree of operational safety is also completed by the association of a chip 47 and/orattachment of a nanocoating 53.

IPC Classes  ?

• C21C 5/46 - Details or accessories

Abstract

A lance holder 1 characterized by a high degree of operational safety is equipped with a mounting or a pipe fixing, which safely prevents a rotation even of a bent lance pipe 2 in the lance holder 1. The clamping head 3 has a fixing part 4 and a clamping part 5, which ensure a punctiform fixation by way of displaceable pressure elements 14, particularly in the form of spheres 15. At least three such spheres 15 are disposed across the circumference in a distributed manner, and ensure the safe fixation across a large tolerance range with regard to the dimensions of the lance pipes 2. Said large tolerance region is further secured in that sealing sleeves 6 having a larger inside diameter may be used, since the same are no longer deformed in the longitudinal direction in order to provide the seal, but instead are deformed in the radial direction. In summary the high degree of operational safety is also completed by the association of a chip 47 and/or attachment of a nanocoating 53.

IPC Classes  ?

• C21C 5/46 - Details or accessories

Abstract

A quick-release coupling (58) is used for connecting two line parts (103, 105) of a supply hose (57), under high pressure, for example,16 or 20 bar, characterised in that both line parts (103), (105) are provided with a specially designed valve. The valve provided on the supply side (104) is designed as a check valve (63) or as a seating check valve (31), whilst on the user side (64) or (106) a non-return valve (65) or a fully sealing seal ring valve (30) is provided, such that, in this line section (105), remaining pressure medium can not suddenly be discharged, but rather slowly and safely released or completely sealed such that the line section (105) remains on the user side under high pressure and with the provided coupling pin (60') ensures that a subsequent easy and secure connection to the corresponding quick-release connector (59') is possible.

IPC Classes  ?

• F16L 37/32 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied