DD211846A1 - DEVICE FOR DRILLING MEDIA-OPERATING PIPES - Google Patents

Abstract

Position of the liquid feed points arranged on the liquid distributor, which are guided by the corresponding recesses in the collecting trough to the liquid feed points. A possible field of application of this transfer device is e.g. the rectification.

Description

Title of the invention

Device for drilling media-carrying pipelines

Field of application of the invention

The invention serves the purpose of medieηführende Eohrleitungen, which are under operating pressure 2.5 MEa, "while maintaining the full Yersorgungsleistung rational, media, in particular gas-tight tapping.

Characteristic he knows technical solutions

So far, incorporation work on high-pressure lines have been carried out so that the corresponding section of the Eoirleitungssystems was unlocked and rinsed. He was pressure-free. Only then could the bore be carried out and the slide or the branch piece inserted or welded. This "procedure had the distinct disadvantage that buyers who were supplied with this part of the line were for the period of the integration work, ie several hours, supply failures or supply restrictions subject to loss of production were thus inevitable The staffing costs for the anti-hailer was considerable Depending on the number of customers affected and the loss of benefits, this resulted in considerable economic losses for each implementation.

So far, solutions, especially in water-bearing! Pipelines for heating purposes, known that exclude these brook parts in that on the Hohrstüok to be drilled a slider or valve is mounted and with a special device through the open obturator through the drilling

21JAR1983 * Ofc3726.

Piping is done. The sealing against the internal pressure is effected by a ITlanschverbindung, The work spindle is connected to a sealing member, e.g. Stuffing box, sealed. Also known are solutions in which the water flowing out of the drilling line inside the door direction is frozen and used as a sealing medium. (DS-Offenlegungsschriften 2 137 W, 25 04 359, 23 58 693, Publication 14 77 883)

All the solutions described have the disadvantage that at high pressure especially gaseous, toxic and explosive and brand-promoting media, an absolute tightness of the stuffing box can not be guaranteed and thus can be present in appropriate media poisoning, fire and explosion hazard.

The application of the method for gaseous, fire and explosion-causing as well as toxic media has therefore been considered.

Object of the invention

The invention has the goal of drilling wells on media-leading, high-pressure pipelines rationally and safely durchzuführeη by doing the necessary work under full operating pressure up to 2.5 MPa, priority is given to measures that exclude with absolute certainty that any undoubtances in the field the stuffing box in the middle of the construction site - see the media leaks and thus hazards. Thus, the application of the method is also possible with gaseous, toxic media. The previously required activation of the affected Eohrleitungsabschnitte and the consequent material losses due to interruption of production are thus avoided.

Explanation of the essence of the invention

The invention has for its object to provide an additional sealing device in the tapping device designed so that media tightness is guaranteed. According to the invention, the object is achieved in the device for tapping

21.JÄR1983 "063-72f:

von medienfuhrendeη lines under operating pressure up to 2.5 MPa, in particular for gas pipelines, ordered from a tapping device, which is firmly inserted into a pipe welded to the pipe with shut-off, so solved, since a non-pressurized media-tight chamber at the connection bottom of the tapping device for collecting the is attached by a sealing element, such as stuffing box, passing on the Bohrspindel toxic Schlupfgasmengen at which either a hose for Portleitung 'this Schlupfgasmengen, or for supply of inert gas,' for example H ₂ or CO ₂ , attached or optionally the media-tight chamber filled with grease as an additional sealing element.

Before starting up the tapping machine, the working spindle is manually retracted by an amount of approx. 10 mm with the aid of the Yor push-in device to relieve the device of the start-up procedure.

Drilling is done with a sleek or compressed air drive. The feed movement is effected by the spring used in the device in the axial direction of the drill spindle, SS is also possible to increase the feed pressure manually by means of the feed device.

After drilling has taken place, the medium present in the drilled line flows into the gland-sealed chamber and fills it. The upper part of the device is disassembled and the work spindle with tool retracted through the slide, which is supported by the existing internal pressure acting on the work spindle base.

The device base remains initially mounted to maintain media tightness until the obturator is closed

 After that the complete disassembly can take place,

Each of the leak test completes the process of integration.

21: YEAR 1983 * 068 726

Execution example

Reference to the figures 1, 2 and 3, the invention is explained in more detail by an embodiment:

The guide tube 14 is welded onto the pipeline prepared for the integration. »The shut-off device 5, which is provided with two welded-on supports, is concentrically welded to the pipeline. The obturator 5 is opened. The drill spindle 11 is guided with the mounted crown drilling tool 9 through the obturator 5 in the welded to the pipe wall guide tube 14-. By the Anbohrteil for high pressure 16, the work spindle 11 is pushed. With the help of the clamps 6 and the Aη sch! ußbodens 15, the tapping part for high pressure 16 is connected to the outlet nozzle of the obturator 5 diadichticht.

21.JAR1983 * O6372G

Claims (6)

invention claim 1. Drilling and drilling of media-carrying pipelines under operating pressure "up to 2.5 MPa _5, in particular for gas pipes", consisting of a tapping attachment fixedly inserted in a pipe with a stopper (5) welded onto the pipe, characterized in that pressureless, media-tight chamber (2) at the connection bottom of the tapping device (15) for collecting by a sealing element (1), for example stuffing box, the Bohrspindel (11) passing toxic amounts of slip gas is attached thereto and a hose line (4) for the continuation of these amounts of slip gas or for the supply of inert gas, for example Ep or CC ^, attached, or optionally the media-tight chamber (2) is filled with fat as an additional sealing element. 2. Yorrichtung according to item 1, characterized in that the attachment of the tapping device on the obturator (5) by Spannpratzen (6) on the existing collar (7) of the slide is done, which is additionally secured by a clamp (8), 3. Gate direction according to item 1, characterized in that a carbide-tipped Kronenbohrwerkzeug (9) is used for machining. 4. Yorrichtung according to item 1 and 3, characterized in that the Yorschubdruck for the Materiaizerspanu-ng by a compression spring (10) acting axially on the drill spindle (11) is generated, wherein for cutting the tool a relief of the ^ feed pressure by manual means receives double-acting lever (12) and pressure piece (I3) and an increase in the feed pressure of the compression spring (10) can be effected in hard material by operating the same hand lever (12) in the reverse direction. 2G 5. Device according to item 1 to 4, characterized in that on the pipe to be pierced a cylindrical Führungsrolir (14) for furring the KronenlDolirers (9) by welding or gluing is attached to the stable position of the process-related long drill spindle (11) on the Pipe saddle to prevent radial emigration during the gating process, Iierzii "3." ". Ssi! Eii drawings 21.JAU9d3 * ü6ä72;