DE835377C - Channel made of iron, especially cast iron pipes, joined together in a watertight and gas-tight manner - Google Patents

Description

Made of iron, especially cast-iron pipes, watertight and gas-tight stitched channel. Pipelines for conveying hot or cold liquids, Gases or vapors, especially steam and hot water lines, are known in With insulating materials such as asbestos, kieselguhr, glass or mineral wool, cork and the like, insulated against temperature losses. The main requirement here is that the insulation materials do not get soaked in any way because of the great thermal conductivity of the water the insulating effect is lost and the delivery line itself through aggressive Components of the water can be destroyed.

Insulated cables laid freely in buildings can become soaked or other He damage can easily be recognized and repaired in a simple manner.

However, the situation is different in the many cases in which For example, district heating lines in inhabited areas are not designed as overhead lines can be, but z. B. for reasons of space, and to the expensive and a lot Iron structures that require material and labor are no longer needed to have to be laid in the ground. So far, this has mostly been used Walkable masonry or concrete channels in which the insulated lines were stored. Because of the high cost and long construction time for such channels is man recently also switched over to it, simpler ones for the insulated lines, not Walkable channels made of concrete or ceramic material with a smaller cross-section to be provided, which consist of a base and a cover part, the longitudinal and the transverse joints of these channels were sealed watertight with ropes, cement and asphalt Need to become.

In order to save on costs and construction time, one has under complete Dispensing with special ducts in which the insulated lines are free and with an air gap are arranged, also already proposed, the insulated lines directly to be laid in the ground. For this purpose one has the damming with a special Spacer rings made of concrete, supported by the actual conduit pipes or surrounded by a smooth or corrugated sheet metal tube shell or you already have it proposed casing pipelines made of iron, e.g. B. cast iron, smooth pipes to use, which are equipped with roller blocks on the inside, on which the actual line is supported, the space between the actual line and the iron jacket pipeline is stuffed with insulation material. By using Smooth iron jacket pipes are special stuffing boxes for each joint : provided and required, which, however, due to their design, caused by subsidence or the like: cannot compensate for evoked conditions, and continue to be there is no possibility here, for example due to temperature fluctuations Changes in length must be taken into account, as the individual pipes at the joints in the stuffing boxes butted tightly against each other.

As a result, of all of these protective agents used up to now the requirements to be placed on them not in all cases and in the long term fulfilled, namely sufficient protection against ingress of soil moisture and moisture, Resistance to external chemical attack, crack resistance, sufficient resistance or resilience to external forces, such as earth movements, earth and traffic loads, tectonic disturbances, temperature fluctuations, etc.

According to another non-prepublished proposal, for the casing pipeline is dimensionally stable and earth pressure-proof lfI casing pipes are preferred Made of spun concrete, asbestos cement or the like. Use, after laying the actual line through the gaps in the Nlantel pipe string to be sealed Concrete half-shells and slide bars are closed. Apart from the fact that the longitudinal joints between these concrete half-shells are very difficult to seal for the long term, These jacketed pipelines generally require special preparation four Excavation through a lean concrete base; the insulating material also fills the whole here Space between the actual heating line and the jacket pipeline, so that he may be your attacking and harmful influence of developing, Is exposed to condensation and seepage water.

In order to now ensure that all of the requirements are met Pipes in the ground using an iron, especially cast iron. ° is: rireii Pipes water-tight and gas-tight ztisanine-manufactured sewer in the simplest, cheaper and the fastest way to enable is proposed according to the invention, a Channel made of normal 1lutfenrolireii of appropriate clear width finite rubber-sealed movable muffle connections, which the insulated pipeline free, c1.11. finitely surrounds an air gap.

As a result of their assembly of iron, especially cast-iron mutant rings with rubber-sealed, flexible distribution elements, the duct can take into account both extreme compressive and bending forces as well as thermal expansions both in the axial and in the radial direction. The fact that the iron sewer line exposes the insulated pipeline, that is to say with an air gap between it, results in an increased insulating effect as a result of this air gap, while this air gap also allows the flow and draft of condensation and seepage water, so hold the heating line and the insulation are not exposed to your aggressive and harmful influence of @onclens and seepage water. Since there is no internal pressure in the sewer line. the wall thickness of the iron nut roll that forms it can be reduced to the extent that the respective forces allow it.

The centering dci- sloped 1-ovoid in the iron catalysis It is best done in the known manner, with the help of the insulated line supports fixed at certain intervals. Instead of the previously used Roles, which the finishing in the protective channel or its clipping over support the insulated line as well as changes in length due to temperature fluctuations, can, these supports are preferably provided with 1111t runners or designed as runners seih, which without difficulty - ", i over the butt joints and l'nel> enlieiten in the iron Canal line can slide away. To avoid solid rust and to prevent it the transition of electrical creeping currents from the iron l @ anal line to the insulated line can be made electrically by these runners or the entire supporting device Non-conductive material such as hard porcelain, synthetic resin or the like. Are made.

With particular advantage 1 inside as a guinea-fleshed lluffenrolii-e @ clii-: itiliintiffenrohre are used, which are easily separated from each other if necessary resolved and can be used again without damage.

Depending on requirements, individual joints in the socket pipe sewer line be bridged in a known manner by slide, which is divided lengthways or transversely or also preferably formed in part can be and on the ends of which seal the free ends of the socket pipes inserted in si ° of the iron sewer line, preferably also by means of rubber-sealed screw connections can be done. By installing this L @ l> it will appear at certain intervals achieved that when replacing the dammed line in the simplest possible way the relevant stretch of the iron socket pipe sewer to be expanded needs and that it is avoided, the whole iron socket pipe sewer must be dug up between two manholes and removed.

The slip-ons can preferably be provided with a test tube, which, using road caps or the like, led to the surface of the earth is: this creates the possibility of using the iron pipe duct at these points eavesdropping, taking measurements or otherwise checking.

Due to the completely tight iron sewer line, the The otherwise usual waterproof outer covering of the insulation layer made of bituminous bandages or cardboard superfluous, so that inherent moisture of the insulation and condensation water, he can exit unhindered. The lines are in a known manner in about 5o m spacing with compensating pieces, which are stored in shafts. Of these Manholes can be used for leaks that have occurred in the insulated pipes can also be easily observed. Niati used to use walk-in or 1> ekrieclil> aren channels for monitoring the insulated lines for absolutely held necessary. Due to the flawless safe waterproof and damage-free Storage in an iron socket pipe is complete operational safety given, which makes the movability superfluous.

Of course, it is also possible, if necessary, in an iron Socket pipe sewer line, several heating conveying lines or condensate water return lines to arrange or accommodate.

In the drawing, an embodiment of the invention is in the longitudinal and cross-section shown. The delivery line i is with the insulating material 2 in the usual Way enveloped. The double supports 3 are attached to it at appropriate intervals, whose feet are designed like runners and are on the inner wall of the normal cast-iron socket pipes with movable rubber-sealed socket connections Support sewer line 4.

Of course, three or more of these types can also be used at one support point Supports, evenly distributed over the circumference, be provided, so that at a unintentional tilting of the line i whose central position is always secured.

The ends of the iron sewer line 4 protrude into the manholes 5 into, from where the dammed line i can be observed and into the approx penetrated or leaked water can run off. The shafts 5 are usually used to accommodate the length compensator 6.

Depending on requirements, there are 4 Built-in slide 7; which are equipped with connecting pieces 8. To the Connection pieces 8 are connected to the earth's surface reaching test pipes 9, by means of which the interior of the iron sewer line 4, for example by eavesdropping or can be checked in some other way.

Claims (1)

PATENT CLAIM: Made of iron, in particular cast-iron pipes, water-tight and gas-tight jointed channel for pipelines laid in the ground and equipped with thermal insulation layers, characterized in that the channel consists of normal socket pipes with rubber-sealed movable socket connections which the insulated pipeline freely, ie with surrounded by an air gap. Cited publications: German Patent No. 78307; U.S. Patent No. 1,371,632.