DE1602641A1 - Device for clamping a cylindrical vessel or body with pre-tensioned wire - Google Patents

Description

BAYLOR WOODROW COIiTSTEUOTIOH "

LIMITED,

345 Ruislip Road, Southall,

Middlesex, England

Pa-1entan message '■ ^: ...- ■■■

Device for reclamping a cylindrical vessel or or body with pre-tensioned wire

The invention relates primarily to reclamping of concrete pressure vessels, such as those used in nuclear power plants or for storing gas or other substances under pressure will,- . -. ; . '. ■

It is known to have a body with a wire around it is to be tensioned to hang a movable device from above, that is able to hold a supply of wire so that that the wire can be withdrawn from it, with the device is conveniently stored and supported in relation to one in or on the surface of the body around which the wire is stretched should be, circumferential groove or a channel, so that, when the device is guided around the body at a certain distance and with one end of the wire fixedly connected in the duct, the wire can be wrapped around the body.

In the description of our earlier application T 290

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are concrete pressure vessels or other concrete containers - beselirietieii, made with the help of pre-tensioned wire or strands placed under Tension are led around in a plurality of layers, spanned are, with the wires or strands in a circumferential direction or channels, which are attached in or on the 'surface of the boiler or body and for holding the Wire layers are used.

The present invention relates to a method; for tensioning pre-tensioned wire around rush cylindrical Boiler or body. The device consists of a platform or frame that surrounds the kettle or container; and that can be brought to a desired height, as well as from a movable device that is supported by the platform or the frame carried, for movement around the kettle, and the aucii is suitable to hold a wire bracket so that the Brairfc can be withdrawn from it, iiin the end of the wire is firmly attached to it connected to the boiler or body through the guides of the device um.the boiler is the wire around the boiler Ijzvr. P body wrapped. '■

For a better understanding, the invention is based on the the following drawings are explained in more detail:

. Fig. 1 shows the plan view of a floor plan

Represents a platform which is arranged around a pressure vessel and serves to support the wire winding device; ¹ ^

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I ¹ Ig. 2 stelli; A void section through the platform or the frame and shows how these are arranged to form a pressure vessel in which the wire is to be wound around;

3? Ig. 3 shows a possible embodiment of pull ropes

for the platform}
Prop. 4 gives a cross-section of the movable wire loop

■ are Mg 5 ^that: "". _ ■ - ■■ - "'" ■.. ■ - gerätesi - ■ - · _ ^-;;:: - \.-...' ■ -._ ■ ".. Sextenansiclit of a clamping device in groES ■; ■ ^"r serem scale, as in the arrangement of J ¹ Ig. ■ \ r is used «

In the following description it is assumed that a pre-tensioned wire is to be wound around a cylindrical pressure vessel, the surface of which - as indicated in the description of the earlier application S 29 & 5 - with a plurality of channels leading around the outside and a number of sills for receiving stranding the braiites is *

In'den calculations TO means such a pressure vessel, while 11 means an essentially ring-shaped platform or frame, which is designed so that it is vertical to the vessel. and can be moved downwards.

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which are attached all around at intervals and are guided over rollers, which are arranged at the top of vertical masts or columns 13. Which are at a suitable distance around the periphery of the platform. For the device referred to, it is proposed to move the platform 11 with the aid of three pairs of rope pulleys, which are arranged at the same distance around the platform. FIG. 3 shows the formation of a pair of pulleys. A pair of rollers 12, with the platform by means voi $ J5pannsßhrauben 14 is connected, is passed over suitable overall ^f bearing rollers 15 at the upper end of the mast or column 13 to a holder to which a *. Roll 16 hangs, over 'which a simple pull rope 17 runs * the pull rope runs over a suitable roller system, which is connected to a winch (not designated), which is operated with the help of an electric motor or other drive means (not designated). The three motors or drive means are so synciironized that when turning in one or the other direction the pia ttföpa Jijgw, the order in ejijer horizontal odes? essentially horizontal! chase .g> ehobe? | Q dea? is lowered. Je wassh f . Demand könneja: be mounted electromagnetic or other geeigneterf qi ?? · directions ^ to ensure 4agg the platform währefid the movement is held horizontally, Znp setting PJattforffl to a certain height o4ß ¥ hoa iz, ontale location zumBruckkessel igt a fopkehyung hit ^? iie iie platform according to: Setting this PoSi ^ i © n holds. For this purpose, all or some of the columns or last ΐ 3 ± n certain distances along their length are provided with pegs 18 (fig * .2}, while the plate

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form 11 is equipped au plurality of angularly versötzten punk part with upstream * and back sliding Tragbölzen 19 which can be disengaged einünd and cooperate with the supporting pins 18 together to hold the platform or release. In order to hold the platform in a certain position, it is additionally designed with several hydraulically or pneumatically operating supports, one of which is marked with 2.0 1.0 (! "Fig. 2), on its inner periphery lying against the wall of the bridge tank 10. As can be seen, the carrier 20, which is rotatably mounted at 21 on a part of the "subframe 22 of the platform", can be angularly about its. The pivot point can be moved with the aid of a hydraulic ram 23, a support bolt 24 being brought into or out of a position relative to the trays / or channels that are guided around the outer wall of the pressure vessel 10. Since some irregularities and tolerances are possible on the surface of the boiler, provision has been made for the adjustment of the support bolts 24 on the carrier 20. An elastic element is also provided in the upper end of the girder, which is movable in such a way that the girder 20 can assume its exact position in spite of any lack of activity in the concrete structure *

If, in the above-described arrangement, the platform 11 is to be brought into position in relation to a pressure vessel, the support bolts 19 and the carriers 20 are drawn in and in the rest position brought. The pull cord motors are used to lift or '. Lowering the platform in action. In this position they give Support bolts 19 and 24 the bolts 1b on the masts 13 and accordingly, the outside of the pressure vessel 10 is free. As soon

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the platform 11 has reached the desired height, it will initially set a little above this level, whereupon the Bolt 19 and the carrier 20 are advanced. In this Position, the platform is then loosened until. the bolts on the corresponding support bolt 18 sit and the Sragebolzen 24- the! Rager 20 the wall of a groove or a channel touch" .

The platform 11 is formed on its inner periphery with a number of upright supports or the like 25, which carry suitably mounted electrical lines 26 for power transmission for the commissioning of the wire winding device, which will be explained below.

A pair of rails (double T-beams) 27 are arranged on the platform to form a circular train guide around the pressure vessel around in a horizontal position to allow. The inner one Rail 27 is used to store a pull chain 20, which, however ^ 'is arranged so that it remains stationary. On top of the Rail 27 is an I-shaped rail 29 attached, the Zv / eck will be explained separately.

The device used to guide the train mentioned above can be referred to as a train , which consists of two trolleys coupled one behind the other. Each trolley is provided with wheels or rollers 32 which rotate on the L-shaped rails 29. The trolleys are also equipped with guide rollers 33 running freely over vertical axes, which

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tical part of the rails are adapted 29 to hold the trolley laterally in the right position "during rotation. At the front trolley 30 is _v mounted 34 ZXM. driving a gear 35 to which the traction chain runs 26 a lrydraulisch.es force element. Guide gears 36, 37, 38 are suitably provided in relation to the 2 friction gear 35 to ensure that the tension chain is properly guided around the latter, Preferably the bearings of the wheels 36 and 37 are adjustable relative to one another to regulate the tension of the tension chain previously "described, the pull chain 20 is held stationary, ^ however," when the hydraulic motor is operated on the lead carriage, the sprocket 35 is driven in order to move the latter and thus the train along the chain and the track the chain 28 can be replaced by teeth attached to the outside of the bowl, the drive gear "being coupled to these teeth.

Furthermore, on the guide roller carriage 30 a so-called Yorlegeröl (padlock sheave) 39 attached to that of the wire (W) runs on its way to the periphery of the pressure vessel. The . * The roller runs around an axis that is adjustable and within limits - as is to be explained - can be moved .. On the second Sollwagen 31 is a wire tensioning device .40 attached to the Applying tension to wire to ensure that the wire daps around the kettle under a predetermined tension will. Various hatreds can be used to achieve the

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required voltage are applied, -preferably an in Fig. 5 designated device, which consists of two endless belts or Chains 41, 42 are made, which are stored vertically one above the other are that the lower run of the upper belt or chain 41 is in contact with the upper run of the lower Siemens or chain 42 stands “or is attached to this. The support frame 43 for one of these straps of desolate chains is floating on one of them Storage 44 put on that he has a limited flowing Movement back and forth. In addition, they are Support frame of belts or chains by hydraulic rams

™ 45 (ram means) "connected" to one another in order to press the belts or chains against one another and thus bring them into contact with one another the wire W from a supply reel or the like is guided lengthways between the two belts or chains 41, 42 to the padlock sheave 39. It is particularly important to point out that if by suitable arrangement the hydraulic shock absorber 45 the gripping beads on the belts or chains 4t, 42, -Effectively grasp the wire, the wire is pulled through during the winding process in such a way that sufficient tension of the wire is achieved, provided that the speed of the belts or chains 4i, 42 is suitably adjusted to the running speed of the carriages 30f 31. In the arrangement according to Fig. 5, the terminal gears around which the belts or chains are guided are at 46 and 47, respectively coupled with a hydraulic motor, its speed with

With the help of two juxtaposed heat- sensitive organs (load cells) that are stored / One of them is marked 48 ". Since the tension device., On the floating bearing 44 is movable, any change in the tension of the wire becomes a displacement des Operates and a transmission of a signal from the load-sensitive organ (load cell) 48 to a control system which controls the hydraulic motors it is possible to control the speed difference between the belts or chains 41, 42 and the trolleys 30, 31 so that the tension of the "-. ; Wire is held on a predetermined ¥ ert. The tension device causes the wire to run linearly, ie :. the wire is neither bent nor pulled, nor is it overheated or otherwise adversely affected. "

Even if a chipwar direction of the type described above is preferably used, there are also other embodiments suitable. E.g. the wire around a Drum are guided, which can be braked to a predetermined tension to effect, wherein the drum is arranged so that it performs a limited flowing movement and is pulled in one direction with the help of certain weights. Furthermore, the wire can be placed between two wheels or zen that grasp it "are passed through. Here the Wire stretched (flattening) ·. Such rollers It can with 'one

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Gate speed can be operated, or it can on the other hand or in addition means are provided to a to generate a predetermined braking torque «instead of The wire can be placed between stationary pressure balls by wheels or rollers Or the like. Be carried out with the help of "levers (jacks) or the like. Be enclosed so that the pressure balls the Grab the wire as it passes and give it a give the right tension.

The wire spool from which the wire is fed through the tensioner is peeled off, is mounted on the second trolley 31 as indicated at 746 in FIG. The trolley is also Equipped with a control room747 to accommodate " Control means for the trolleys and accessories as well as a seat for the operating personnel.

While in the preceding the use of two trolleys 30, 31 is described, it is also possible to me ^ inen Dare ο he also use three or more, on which the wire tools, the tensioner that. Padlock sheave as well as the necessary control device, leaving one free Space for the operation are arranged.

If a wire is to be wound around a pressure vessel in circumferential grooves or channels with a device described above, the .flatticrm 11 is brought to a suitable fleas. The wire is from the ".spule ^ 4 6 on

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Trolley 31 is guided in the direction of the tensioning device 40 around the padlock sheave 39 on the front trolley 30 and into the predetermined groove or channel where the end is fastened in a suitable manner To drive gear 35 and thus to guide the trolleys 30, 31 around the boiler, the wire being drawn from the spool> f46 in the direction of the tensioning device 40 and the boiler being guided In our earlier application T 29 005 it is proposed to wrap "an inverse number of layers in each trough." \ η & ώχι a certain number "// indungen or layers of. wire is attached in a certain groove, the trolleys are stopped and the end of the wire, for example with the help of starter plates, fixed in the groove, whereupon the device is placed in another groove or channel for further wrapping is set.

The york role 39 has two functions. First turns turn the wire 180 °, secondly, it tends to increase the running height of the wire so that the strands are precisely stored in the grooves or channels. To the second. Function still see below., you can improve the adjustment of the axis of rotation the role to be taken. As soon as the wire has completed one complete revolution around the boiler, "the serving roll." reduced by an amount corresponding to the wire thickness, so that while the entry point of the wire on the reel of the tensioning device remains at a constant level, - the trigger

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Punfct the wire from the roller 39 is raised or lowered by an amount corresponding to the wire die. In this way, the next time around the boiler, the turn is laid parallel to the previous turn without any overlap. With such a regulation of the door-laying roller, all necessary adjustments of the height of the trolleys or of the tensioning device are avoided during the following rocking process, and within certain limits the wire can run off at any required height. The adjustment of the feed roller can be effected with the aid of a hydraulic lifting device, which is set in motion by a switching mechanism. When the trolleys have completed one revolution around the bowl, the switching mechanism is set in motion by a stationary stop, whereby a threaded spindle or another member controlling the action of the hydraulic jack is set in rotation. It is possible to install a scanning device that works in the grooves or channels of the pressure vessel and indicates any irregularities or deviations. Such a gate direction , He carries a control pulse to the setting device for 4 door-laying roller * so that the position of the "latter is aligned with the exact position of the wire strand".

In order to. the wire is inserted exactly into the 'Jeltea groove =, can he after the * Jmlauf / about the gate-laying roller 39 through a guided tour are directed. "the 2" B "from two interacting roles or Like, there is ^ over which the wire is passed, whereby the guide can be controlled with the help of a servo motor or the like,

which in turn is regulated by a role that. so -stored is that they are in the groove "or the channel de ^ 0 Sruökkesseis runs. In addition to the automatic control of the leadership can also, in particular, be a device for manual regulation be provided:: · -. ; ..

The above-described device can be modified in various respects. The fastening of the platform 1i can take place in a certain position in various other ways. In addition, the number of trolleys, the drives for the tensioning device, the feeder oil and the necessary control devices can be varied. The clamping device can be in various! Shapes and "particularly excluded / forms be when the prestressed wire or strand, which form a band has _t wherein G et up instrument by a linear Induktionsmot-or- (linear induction motor) is .ersetzt which is arranged in such a way that it achieves the necessary wire tension. Instead of the platform 11 carrying the pulling device, which can be pulled up and off with the help of several pulling ropes or cables, "another arrangement with pulling ropes or the like can be made ', preferably a design in which the platform is supported by a series of struts or the like, which cause the lifting and lowering of the -. "Platform -. The struts can stand below or above the platform. In the latter case it is necessary to provide an arrangement from which the struts are suspended.

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rest the annular platform. In this case, a suitable provision is made to plague the two of them Platforms in relation to the pressure vessel during the wrapping process met. If necessary at the end of the same the platform is vertically upwards in relation to the pressure vessel in readiness for a further winding process ■ move, the upper platform is released first and the struts to raise them to the required level. brought, whereupon the upper platform is fixed again. The lower platform is released and the struts are drawn in to push the platform up until the original clearance is restored, whereupon the lower platform is back in its position is determined «It should be noted that if this process is reversed, the lowering or securing of the platform can be done quickly. The lower platform is not initially determined and the struts are stretched to lower them to a predetermined height / at the they are re-established «The upper platform is then not established and the struts are withdrawn to ί lower the latter. Instead of the platform on the boiler - as above shown - to fasten, an additional device for fastening the same to the boiler can be provided, which also can carry the platforms.

In another embodiment with mutually movable upper and lower platforms, a series of pull cables or pairs of ropes that support the upper platform, alternately

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with a string of pulling ropes or pairs of ropes that connect the lower Carry the platform, walk around the cauldron, each platform carrying a braht distribution device. .. ^

• 'Instead of the above-mentioned arrangements it is possible to remove the platform carrying the Leifbahn from the Hang up the kettle so that it is in relation to the • Boilers are raised and lowered and in a certain position be brought to a sille or a canal of the boiler can.

It should be noted that if there is a worker in the Cabin ^ 47 sits behind the trolley 31 and the front part of the Sixhrungswagens 30 can not be overlooked, useful in the A screen (closed circuit television screen) is attached to the cabin, so that the worker can see the whole facility the ¥ ieke! process.

«While the gate direction described above is primarily used to lay pre-tensioned wire around a concrete tank, it can also serve to close detached or tensioned wire, e.g. in the event of a crack or other error during unwinding * remove. In the -first case, the loose end of the wire around the supply roll can be returned to the wire spool using the tensioning device. with the spool running backwards and the trolleys being moved against the wire so that the wire is completely wound onto the spool. In the event of a winding fault, for example if one turn passes over another

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Reverse rotation of the d ± ahtspule and reversal of the course of the Trolley is placed, it is possible to push the wire up to the point of failure rewind or remove from the kettle, maintaining tension on the wire and finished coils remain. Once the wire has been sufficiently rewound and the fault has been corrected, the device can operate normally for the further wrapping of the boiler can be used *

Claims;

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Claims (19)

1W264T Pat enfanspritche M.) Device for tensioning, pre-tensioned wire around a cylindrical vessel or body, ordering: from a "movable around the vessel or body Taerumf ülirTDaren ^: device, which is suitable to hold a wire coil so that the wire from it can be withdrawn, characterized in that the device (30, 31) is movably arranged on a platform or a frame (11) which / or that surrounds the boiler or caper (TO) and at a certain height to the boiler ' - m or frame (10) can be adjusted. 2. Device according to claim 1, characterized in that the mobile device has means for maintaining a predetermined tension in the wire during the winding process. ^: ^ · 3. Device according to claim 2, characterized in that that the means of maintaining tension consist of a tensioning device with two endless belts or chains that "are arranged in such a way that the line of flight, one closely fitting and parallel to the line of flight of the other belt," or the other chain runs, with the Rfenen or. Chains with rubbing beads or the like; are provided that rubbing the Grasp the wire as it passes between the belts or chains can, and that further means for 'maintaining a predetermined differential between the speed of the loading 109841/023 7 movable device (30, 31) and the speed of the belt or chains are provided so that a predetermined tension is held in the wire. 4. Apparatus according to claim 3 * characterized in that that the tensioning device is arranged in such a way that it can execute a sliding movement that continues on the movement of the device responsive means are provided which transmit a contact pulse, the speed of the Hydraulic motors driving belts or chains are controlled to provide the necessary differential between the To maintain the speed of the belts or chains and that of the tensioning device. . ■ "" "■■" ". '■ 5. .Device according to claim 3 and 4, characterized through the arrangement of hydraulic pressure nozzles for upright maintaining a predetermined leadership of the cooperating Alignment lines of the endless belts bz> /. Chains. 6. Apparatus according to claim 2, characterized by the arrangement of a linear induction motor (linear.induction motor) to maintain the tension in the wire. 7. Device according to one of the preceding claims, characterized in that the mobile device contains a power unit for driving a gear or drive wheel, 109841/0237 - ie - which is arranged in such a way that there is a boiler or body orbiting stationary chain or teeth moved. 8 «arrangement according to claim 7, characterized in that that the gear drive is reversible so that the device can be operated in any direction. 9. Yorrichtung according to claim 7 or 6, characterized in that that the mobile device is designed with running wheels or rollers that revolve on a circular G-track, which is carried by the platform or the frame, wherein Means for absorbing side forces which are exerted on the movable device during the wire winding process are provided are. IQ. "Device according to claims 2-9» characterized by Janet, that the mobile device carries a reel or drum for a twist winding, with the wire from the reel or iroirael is withdrawn under tension and then by one Also arranged on the device is a Vo'-laying roll (padlock sheave) runs on your way to the kettle or body. 11. Yorriciitung according to claim 10, characterized in that that means for adjusting the position of the serving roller after each Circulation of the SOann device around the boiler are arranged to to ensure the exact position of the following wire windings. ^AL 109841/0237 12. The device according to claim 10, characterized in that the movable device contains two roller carriages or roller tables coupled one behind the other, the front one carrying the feed roller and the drive force for the gear or drive wheel, while the rear roller carriage carries the jig, the wire coil and. carries a cabin with control means for the operating personnel. 13. Device according to one of the preceding claims, characterized in that the platform or the frame is carried by a series of pull cords or cables that-in. at certain intervals. the platform or the frame around fixed to this, help the platform or the frame in the axial direction of the vessel or body can be moved with their. 1-4. Device according to claim 13, characterized in that that the pull cables are arranged in pairs, each pair is moved by a Vind'e and the motors of each // inden are synchronized to the platform or the rack largely horizontally during the upward and downward division keep. . - 15. Apparatus according to claim I3, characterized in that that the platform or the frame both in its inairen as well as the outer periphery distributed over its circumference Angularly spaced points with means for setting * 109 841/0237 to a "certain height in Bez: Miung to a groove boring .a channel of the boiler is formed, as well as with stitches on "ascertaining Tertica!" beams, or pillars, with which the .platform or the frame: can be determined 16. Yorriclitung according to Änsprucn 15, daduroli .gekmarks that the means on the inner periphery of the platform or the frame are rotatably mounted arms, which with the help of a hydraulic shock absorber between a cow and _; a working position "are movable, and carry the support bolts, which adapt to the lower edge of the channel or the channel when the arm is in the working position," V-. 17. The device according to claim 16, characterized in that that the position of the support bolts on the support arms can be adjusted 18. The device according to claim 15, characterized in that that the resources on the outer periphery of the platform are desolate of the frame, consist of forward and retractable bolts. 19. Device according to one of the preceding claims, characterized in that the wire .during its run between the movable device and the boiler or body by a Guide assembly is moved to an exact location of the following To ensure twisting turns »: 109 841AO237 L e rs e i t e