专利摘要:
A method of mounting a natural draft cooling tower having a tower mantle suspended on a central support projecting beyond the upper rim of the mantle which is clamped and tightened between a pressure ring at the upper rim of the mantle and a foundation. In order to mount the cooling tower mantle, the pressure ring lying on the ground and coaxially surrounding the central support is suspended on a lifting ring by means of a plurality of supporting cables exceeding in length the radius of the pressure ring. This lifting ring is guided on the central support, suspended on a plurality of pulling elements which are lifted by at least one lifting device detachably connected to the central support, as a mantle section corresponding to the advance of the lifting device is displayed. After the lower rim of the cooling tower mantle has been connected to the foundation, the mantle is tightened by the lifting device. By attaching the lifting ring to the central support, the cooling tower mantle is maintained in its pre-stressed position.
公开号:SU950194A3
申请号:SU731967979
申请日:1973-11-12
公开日:1982-08-07
发明作者:Шлайх Ерг;Майр Гюнтер
申请人:Балке-Дюрр Аг(Фирма);
IPC主号:
专利说明:

The invention relates to methods for mounting a casing of a tower suspended on an intermediate support protruding beyond the upper edge of the casing and stretched between the pressure ring located at the upper edge and the base.
Closest to the invention in technical essence and the achieved result is a method of mounting a casing of a cooling tower with a trellised car. a cable formed by ropes containing a rack installation with a lifting device and a lifting ring fixed to it, connected to the last flexible connections, installing a pressure ring at the base of the rack, connecting it to the lifting ring, and straightening the carcass with a lifting angle of 2Q [1].
The disadvantage of this method is the excessive expenditure of time for installation.
The purpose of the invention is to reduce the time of ~ 25 times installation.
This goal is achieved by the fact that when mounting the casing of a tower with a trellised frame formed by cables, containing a rack installation with a lifting device fixed thereon and a lifting ring connected to the last flexible connections, installing a pressure ring at the base of the rack, connecting it to the lifting ring and straightening the frame by lifting, the pressure ring is connected to the lifting ring using load-bearing cables with a length exceeding the radius of the pressure ring, after which the frame cables are connected to the latter, previously otannye mounted on the base stand drums, then carry both lifting rings fixed lower part of the frame and produce its tension, followed by plating the carcass.
. In addition, before fixing on the rack of the lifting ring carry out step-by-step lifting on the rack of the lifting device.
In FIG. 1 shows the initial installation stage when the tower frame still lies on the ground; in FIG. 2 intermediate installation stage, in which the tower frame is raised at about 2/3 of the height of the intermediate support; in FIG. 3 is a fully mounted cooling tower, side view. _
The lightweight cooling tower has an intermediate stand 1, which is installed on the base 2 and is equipped with a bearing flange 3 at the upper end. The tower frame, equipped with a pressure ring 4 at its upper edge, is suspended by means of the support cables 5 to the stand 1, and the intermediate stand 1 stands for the upper edge of the tower frame ..
The tower frame consists of a lattice system 6 formed by three bundles of cables in the form of a grid with triangular slots. As · cable bundles, inclined diagonal cables rising to the right, inclined left-sided, diagonal cables rising to the left and meridional cables located in the horizontal plane are attached to each other at intersection points with the closure of the power circuit. As a result, the lattice system b acquires the properties of a shear-tight membrane vault of the membrane to which the hermetic sheathing is attached 7. This sheathing may consist of one piece of coating, for example metal, plastic, or from a flooring made of plastic, metal or asbestos
For mounting the casing of the tower, the supporting cables 5, attached at their lower end to the pressure ring 4, are fastened with their upper end to the lifting ring 8 located on the already constructed intermediate rack 1, which can be lifted using several tensioning elements 9 of at least one lifting device 10 attached at the end of the intermediate strut 1 In this case, pull ropes are used as tension elements 9; lifting device 10 consists of several hydraulic presses.
Before starting the installation, the frame of the tower or grid system 6 is laid on the ground so that its pressure ring 4 concentrically covers the intermediate rack 1. After that, the support cables 5 are fixed between the pressure 4 and the lifting ring 8. Then, continuously or in steps, lift the underground ring 8 using the traction elements 9 of the lifting device 10.
As a result of lifting the lifting ring 8 and thereby the pressure ring 4, the tower frame is simultaneously lifted attached to the pressure ring 4, or a portion of the casing corresponding to the lifting. Depending on the type of tower frame used, the latter can also be created during lifting,
$ 3 example, if we are talking about very large cooling towers. In FIG. 2 shows that when using the trellis system 6, diagonal and meridial cables are released into. lifting time due to unwinding from the cable drum 11. For the formation of a shear-tight membrane vault-sheath, it is necessary to connect the cables at their intersection points to transmit forces.
Shortly before the frame reaches the cooling tower of its final position, it is attached with its lower edge to the base 12. The last section of the path of the lifting ring 8 thus serves to simultaneously tension the frame of the cooling tower. As a result of the installation of the lifting ring 8 on the bearing flange 3 of the intermediate rack 1, it is possible to maintain the created tension. Due to this, the frame of the cooling tower acquires the properties of a shear-tight membrane vault-shell equipped with a casing 7.
. Before commissioning, the mounting devices consisting only of the tensioning elements 9 and the lifting device 10 are removed. ** Both the tensioning elements 9 and the lifting devices 10 can be reused for another purpose, as a result of which no special devices are required, turning out to be redundant after installation.
权利要求:
Claims (2)
[1]
The invention relates to methods for mounting a tower of a cooling tower suspended on an intermediate support protruding beyond the top edge of the case and stretching between a pressure ring located at the top edge and a base. The closest to the invention to the technical essence and the achieved result is a method of mounting a tower of a cooling tower with a lattice frame formed by cables containing a stand installation with a lifting device attached to it and a lifting ring connected to the last flexible connections stand, connecting it to the lifting ring and straightening the frame with a lift 13. The disadvantage of this method is the overhead of installation time. The purpose of the invention is to reduce the installation time. This goal is achieved by installing a tower with a lattice frame formed by cables, which includes installing a stand with a lifting device attached to it and a lifting ring connected to the last flexible connections, installing the pressure ring at the base of the stand, connecting it to the lifting ring ring and straightening of the frame by lift, the clamping ring is connected to the lift ring by means of carriers — a cable with a length exceeding the radius of the pressure ring, after which the cables of the frame are attached to the latter The drums wound on the racks installed at the base, then lift both rings, fix the lower part of the frame and tension it, followed by the shell of the frame. . In addition, prior to fastening the lifting ring to the stand, a stepped ascent is carried out on the stand of the lifting ring. FIG. 1 shows the initial stage of installation, when the cooling tower frame is still lying on the ground; in fig. 2 an intermediate stage of installation, in which the cooling tower frame is raised approximately 2/3 of the height of the intermediate support; in fig. 3 - fully mounted cooling tower, side view. A lightweight cooling tower has an intermediate stand 1, which is mounted on a base 2 and provided with a support flange 3 at the upper end. The cooling tower frame, fitted on its upper edge with pressure RINGS 4, is suspended by means of support cables 5 to the rack 1, and the intermediate stand 1 stands for upper edge of the cooling tower frame. The frame of the cooling tower consists of a lattice system b formed by m bundles of cables in the form of a grid with triangular gaps. As cable beams, inclined right-inclined diagonal cables, inclined left-sided, left-rising diagonal cables and meridial cables located in the horizontal plane connected to each other at intersection points with a power circuit are used. As a result, the lattice system b acquires the properties of a rigid-shear membrane bladder shell, to which a sealed sheath 7 is attached. This sheathing may consist of a single piece of coating, such as metal, plastic or flooring made of plastic, metal or asbestos. The cables 5, attached by their lower end to the pressure ring 4, are fastened by their upper end to the lifting ring 8 located on the already constructed intermediate stand 1, which can be lifted using several lkih tension elements 9 at least one lifting device 10 attached to the end of the intermediate Nogo rack 1. As the tension elements 9 used in this case are the traction rope; lifting device 10 sostoit of several hydraulic pre-ssov. Before starting the installation, the cage or lattice system is laid on the ground so that its pressure ring 4 concentrically covers the intermediate rack 1. Thereafter, the carrier cables 5 are fixed between the pressure 4 and the lifting 8 rings. Then, the underground ring 8 is lifted continuously or in steps with the help of pull elements 9 of the lifting device 10. As a result of lifting the lifting ring 8 and thus pressing ring 4, the cooling tower frame attached to the pressing ring 4 or the shell section is simultaneously lifted corresponding to the rise. Depending on the type of cooling tower frame used, the latter may be created during the lift, for example, when it comes to very large cooling towers. FIG. 2 shows that when using the bristle system b, diagonal and meridian cables are released. rise time due to unwinding from the cable drum 11. To form a shear-tight membrane roof sheath, it is necessary to connect the cables at their intersection points in order to transfer forces. Shortly before the cooling tower reaches its final position, it is attached with the lower edge to the base 12. The last section of the lifting ring 8 thus serves simultaneously to tension the cooling tower frame. By installing the lifting ring 8 on the supporting flange 3 of the intermediate pillar 1, it is possible to maintain the tension created. Due to this, the cooling tower frame acquires the properties of a rigid-shear membrane vault with a casing of 7.. Before being put into operation, mounting devices that consist only of tensioning elements 9 are removed, and lifting devices, tensioning elements 9, and lifting devices 10 can be reused for another purpose, as a result of which no special devices are needed that are redundant. after installation. Claim 1. Method of mounting the casing of the dragline with a trellis carcass formed by cables, installing a stand with a lifting device attached to it and a lifting ring connected to the last flexible connections, installing the pressure ring in the stand base, connecting it to the lifting ring and straightening the frame, characterized in that, in order to shorten the installation time, the pressure ring is connected to the lifting ring by means of supporting cables longer than the radius of the pressure ring, after which The carcass cables, previously wound on the drums installed at the base of the stand, are attached to the latter, then both rings are lifted, the lower part of the frame is secured and tensioned, followed by frame plating.
[2]
2. Method POP1, characterized in that, prior to fastening the lifting ring to the stand, a stepping walk is carried out on the stand of the lifting device. Sources of information taken into account in the examination of 1, US Patent No. 2743734, CL 135-1, 1956 (prototype).
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同族专利:
公开号 | 公开日
CS176252B2|1977-06-30|
GB1402218A|1975-08-06|
BE807040A|1974-03-01|
DE2255793A1|1974-05-22|
BG20398A3|1975-11-05|
RO62213A|1977-10-15|
SE400343B|1978-03-20|
FI53160C|1978-02-10|
AU6120973A|1975-04-10|
FI53160B|1977-10-31|
NL7313950A|1974-05-17|
ES420515A1|1976-04-01|
DE2255793C3|1982-01-07|
FR2206776A5|1974-06-07|
DD107106A5|1974-07-12|
JPS5047432A|1975-04-26|
AU472634B2|1976-05-27|
IL43469D0|1974-01-14|
CA990042A|1976-06-01|
AT325073B|1975-10-10|
ZA737854B|1974-09-25|
IL43469A|1976-05-31|
HU173420B|1979-05-28|
DE2255793B2|1976-01-08|
CH566473A5|1975-09-15|
PL89544B1|1976-11-30|
JPS539016B2|1978-04-03|
US3945106A|1976-03-23|
IT999040B|1976-02-20|
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
DE2255793A|DE2255793C3|1972-11-15|1972-11-15|Method of assembling a cooling tower jacket|
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