CN110984641A - Construction method of ice melting pipe of cooling tower - Google Patents
Construction method of ice melting pipe of cooling tower Download PDFInfo
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- CN110984641A CN110984641A CN201911318931.5A CN201911318931A CN110984641A CN 110984641 A CN110984641 A CN 110984641A CN 201911318931 A CN201911318931 A CN 201911318931A CN 110984641 A CN110984641 A CN 110984641A
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- cooling tower
- herringbone
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/10—Buildings forming part of cooling plants
- E04H5/12—Cooling towers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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Abstract
The invention discloses a cooling tower deicing pipe installation construction method, which comprises the following steps: and paving a cushion layer, pouring a circular bottom plate and pouring a ring group on the top surface of the cooling tower foundation pit. And installing and constructing an elevator tower frame and a hydraulic jacking flat bridge in the cooling tower. And pouring a herringbone column buttress and a herringbone column in the outer circumferential direction of the ring group, constructing the cylinder wall of a first section of cooling tower on a lower ring beam at the top of the herringbone column, sequentially installing a plurality of embedded parts in the cylinder wall of the first section of cooling tower at intervals along the circumferential direction, and then sequentially constructing the cylinder wall of a second section of cooling tower and the cylinder wall of a third section of cooling tower. The deicing pipe is installed along the circumference of the wall of the cooling tower, the wall of the cooling tower is provided with an embedded part, the embedded part is provided with a channel steel, and the channel steel and the wall of the cooling tower are connected with angle steel. The ice melting pipe is put into use, the problem that the cooling tower unique in winter in the north is iced seriously is solved basically, the self running reliability of the cooling tower is improved, and the service life of the fan is prolonged, so that the cooling tower runs more safely and stably.
Description
Technical Field
The invention relates to a construction method of an ice melting pipe, in particular to a construction method for installing an ice melting pipe of a cooling tower.
Background
The icing of the cooling tower is a big problem in winter operation of the domestic cooling tower at present. Cooling towers in cold regions all have a severe ice scene during winter operation. The using effect of the deicing pipe is obvious on the cooling tower, the fan rotates reversely in winter, the moist hot water vapor carries with the circulating water to accelerate the outward flying drift due to the increase of the water vapor pressure, after the deicing pipe is put into use, the water vapor drift amount is reduced, the drift water amount is effectively controlled, the influence on the surrounding environment of the cooling tower is reduced, and the icing degree outside the tower and the corrosion on other outdoor equipment are reduced; meanwhile, the icing amount of the tower is reduced, so that the overall appearance of the cooling tower is greatly improved, potential safety hazards caused by large ice blocks formed above the cooling tower in winter to workers and normal production are basically eliminated, the operation safety factor of the overall cooling tower is improved, the operation of the cooling tower and the routing inspection of the workers are safer and more reliable, and indirect benefits are very obvious.
Chinese patent application No. CN201621098609.8 discloses "a circulating water cooling system", which includes: the cooling tower is connected with the heat exchanger through the water supply pipeline, the heat exchanger is respectively communicated with the first water return pipeline and the second water return pipeline, the first water return pipeline is connected with the cooling tower, and the second water return pipeline is communicated with the deicing pipeline; the cooling tower comprises a first circulating water outlet and a first circulating water inlet, circulating water flows out of the first circulating water outlet, passes through the heat exchanger, respectively flows back to the first circulating water inlet through a first water return pipeline, enters the cooling tower and flows back to the deicing pipeline through a second water return pipeline; wherein, be equipped with a plurality of hole for water jets on the deicing pipeline for the packing layer in the cooling tower is sprayed, and the deicing pipeline is located the below of packing layer. The patent refers to the field of' cooling systems for water-cooling systems and the present application relates to a method for installing and constructing ice-melting pipes of cooling towers.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the installation and construction method of the ice melting pipe of the cooling tower, which has the advantages of low construction cost, high safety coefficient and high construction efficiency.
A cooling tower deicing pipe installation construction method comprises the following steps:
(1) digging a cooling tower foundation pit at a set position according to a drawing, laying a cushion layer on the top surface of the cooling tower foundation pit, pouring a circular bottom plate on the cushion layer, and then pouring a ring base in the outer circumferential direction of the circular bottom plate;
(2) installing a construction elevator tower frame in the cooling tower to be constructed, close to the tower inlet, along the vertical direction, installing a lift car for ascending and descending on the construction elevator tower frame, installing a construction platform on the top of the construction elevator tower frame, and installing a hydraulic jacking flat bridge on the side surface of the construction elevator tower frame, wherein the heights of the construction elevator tower frame and the construction platform are consistent with the height of a lower ring beam;
(3) a total station is arranged in the center of the ring group, templates of the herringbone pillar buttresses are uniformly installed on the ground in the outer circumferential direction of the ring group at intervals according to set positions, and the herringbone pillar buttresses are poured;
(4) removing the templates of the herringbone column buttress piers, and then erecting bent frames of the herringbone columns above and on the side surfaces of the herringbone column buttress piers along the annular direction of the plurality of herringbone column buttress piers;
(5) paying off herringbone columns, wherein the herringbone columns are cylindrical, each herringbone column inclines towards the direction of the central axis of the cooling tower to be poured, and the paying off process of the herringbone columns is as follows: installing the assembled herringbone column templates on the herringbone column buttress according to a construction drawing; positioning and measuring the inclined intersection angle of the herringbone column template and the herringbone column buttress by using a total station, positioning the spatial position of the herringbone column according to the intersection angle, wherein the angle of the intersection angle is obtained by a drawing;
(6) vertically transporting the herringbone column steel bar construction material to a construction platform through a lift car of a construction elevator tower frame, and then transporting the herringbone column steel bar construction material to a position, needing construction, of the herringbone column through a horizontal channel of a hydraulic jacking flat bridge; installing the bound herringbone column reinforcing steel bars at the set herringbone column positions, pouring herringbone column concrete, and enabling the projection of the circle center of a circumference formed by circle center connecting lines of the top surfaces of all the herringbone columns along the vertical direction to coincide with the circle center of the bottom plate;
(7) pouring a circle of lower ring beam on the top of the herringbone column;
(8) the total station is dismantled, a vertical collimator is arranged at the position of the total station, a disc-shaped receiving target coated with fluorescent paint on the bottom wall is respectively fixed on the bent through four steel wire ropes, and a cross is drawn at the center of the receiving target; the center point of the vertical collimator coincides with the cross center of the disc-shaped receiving target;
(9) determining the spatial position of the cylinder wall by measuring the radiuses of the outer walls of a first section of cooling tower cylinder wall, a second section of cooling tower cylinder wall and a third section of cooling tower cylinder wall to be poured from the center of a disc-shaped receiving target;
(10) continuously lengthening the height of a construction elevator tower frame and a hydraulic jacking flat bridge, conveying materials to a construction platform, hoisting the materials to a construction position by using the hydraulic jacking flat bridge, constructing the cylinder wall of a first section of cooling tower on the lower ring beam, sequentially installing a plurality of embedded parts in the cylinder wall of the first section of cooling tower at intervals along the circumferential direction, sequentially constructing the cylinder wall of a second section of cooling tower and the cylinder wall of a third section of cooling tower on the cylinder wall of the first section of cooling tower in sections till the wall of the cylinder wall of the cooling tower is one tenth higher than the wall of the cylinder wall of the first section of cooling tower, and removing a bent frame of the herringbone column when the concrete strength of the herringbone column reaches the designed strength;
(11) fixedly connecting each embedded part with one end of one groove-shaped channel steel along the horizontal direction, and connecting an angle steel between the groove-shaped channel steel and the cylinder wall of the cooling tower;
(12) and (4) mounting the deicing pipe on the groove-shaped channel steel.
The cylinder wall construction of the method is mainly completed by a hydraulic jacking flat bridge and a multifunctional construction elevator matched with a tripod shaped template system. The hydraulic jacking flat bridge and the multifunctional construction elevator are installed at first, and the hydraulic jacking flat bridge can provide adhesion for the multifunctional elevator and also can provide a platform for storage and horizontal transportation of reinforcing steel bars and concrete in construction. The construction elevator mainly uses for the perpendicular transportation of manpower. The deicing pipe is installed along the circumference of the wall of the cooling tower, the wall of the cooling tower is provided with an embedded part, the embedded part is provided with a channel steel, and the channel steel and the wall of the cooling tower are connected with angle steel. The use effect of the deicing pipe is obvious above the cooling tower. The device is applied, the problem that the cooling tower unique in winter in the north is iced seriously is solved basically, the self running reliability of the cooling tower is improved, the running working condition of the cooling tower is improved, the loss of fan parts of the cooling tower is reduced, the service life of a fan is prolonged, and therefore the cooling tower runs more safely and stably.
Drawings
FIG. 1 is a schematic view of a cylindrical wall construction elevation construction node of the method for installing and constructing the ice melting pipe of the cooling tower;
FIG. 2 is a schematic view of a tripod mounting construction node on the vertical surface of the cylinder wall in the method for mounting and constructing the ice melting pipe of the cooling tower of the present invention;
FIG. 3 is a schematic view of a mounting construction node of a cylinder wall elevation deicing pipe according to the mounting construction method of the deicing pipe of the cooling tower.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The invention discloses a method for installing and constructing an ice melting pipe of a cooling tower, which comprises the following steps:
(1) digging a cooling tower foundation pit at a set position according to a drawing, laying a cushion layer on the top surface of the cooling tower foundation pit, pouring a circular bottom plate 12 on the cushion layer, and then pouring a ring group 5 in the outer circumferential direction of the circular bottom plate 12;
(2) a construction elevator tower frame 9 is arranged in a cooling tower to be constructed close to a tower inlet along the vertical direction, a lift car 11 used for ascending and descending is arranged on the construction elevator tower frame 9, a construction platform is arranged at the top of the construction elevator tower frame, a hydraulic jacking flat bridge 8 is arranged on the side surface of the construction elevator tower frame, and the heights of the construction elevator tower frame 9 and the construction platform are consistent with the height of a lower ring beam 10;
(3) a total station 2 is arranged in the center of the ring group 5, templates of the herringbone column buttresses are uniformly installed on the ground in the outer circumferential direction of the ring group 5 at intervals according to set positions, and the herringbone column buttresses 6 are poured;
(4) removing the templates of the herringbone column buttress, and then erecting a bent frame of the herringbone column above and on the side surface of the herringbone column buttress 6 along the annular direction of the plurality of herringbone column buttress 6;
(5) paying off the herringbone columns, wherein the herringbone columns 7 are cylindrical, each herringbone column inclines towards the direction of the central axis of the cooling tower to be poured, and the paying off process of the herringbone columns is as follows: installing the assembled herringbone column templates on the herringbone column buttress 6 according to a construction drawing; positioning and measuring the inclined intersection angle of the herringbone column template and the herringbone column buttress by using a total station, positioning the spatial position of the herringbone column according to the intersection angle, wherein the angle of the intersection angle is obtained by a drawing;
(6) vertically transporting the herringbone column steel bar construction material to a construction platform through a lift car 11 of a construction lift tower frame 9, and then transporting the herringbone column steel bar construction material to a position needing construction of the herringbone column through a horizontal channel of a hydraulic jacking flat bridge 8; and then installing the bound herringbone column reinforcing steel bars at the set herringbone column positions, pouring herringbone column concrete, and enabling the projection of the circle center of the circumference formed by the circle center connecting lines of the top surfaces of all the herringbone columns along the vertical direction to coincide with the circle center of the bottom plate 12.
(7) A circle of lower ring beam 10 is poured on the top of the herringbone column;
(8) and (2) dismantling the total station 2, placing a vertical collimator at the position of the total station, fixing a disc-shaped receiving target 4 coated with fluorescent paint on the bottom wall on the bent frame through four steel wire ropes respectively, and drawing a cross at the center of the receiving target. The centre point of the collimator coincides with the centre of the cross of the disc-shaped receiving target 4.
(9) Determining the spatial position of the cylinder wall by measuring the radiuses of the outer walls of the first section of cooling tower cylinder wall, the second section of cooling tower cylinder wall and the third section of cooling tower cylinder wall to be poured from the center of the disc-shaped receiving target 4;
(10) continuously lengthening the height of a construction elevator tower frame and a hydraulic jacking flat bridge 8, conveying materials to a construction platform, hoisting the materials to a construction position by using the hydraulic jacking flat bridge 8, constructing the cylinder wall of a first section of cooling tower on the lower ring beam 10, sequentially installing a plurality of embedded parts 14 in the cylinder wall of the first section of cooling tower at intervals along the circumferential direction, sequentially constructing the cylinder wall of a second section of cooling tower and the cylinder wall of a third section of cooling tower on the cylinder wall of the first section of cooling tower in sections till the wall of the cylinder wall of the cooling tower is one tenth higher, and dismantling the bent frame of the herringbone columns when the concrete strength of the herringbone columns reaches the designed strength;
(11) fixedly connecting each embedded part with one end of a groove-shaped channel steel 15 along the horizontal direction, and connecting an angle steel 16 between the groove-shaped channel steel and the cylinder wall of the cooling tower;
(12) the ice melting pipe 13 is attached to the channel steel 15 having a groove shape.
Claims (1)
1. The method for installing and constructing the ice melting pipe of the cooling tower is characterized by comprising the following steps of:
(1) digging a cooling tower foundation pit at a set position according to a drawing, laying a cushion layer on the top surface of the cooling tower foundation pit, pouring a circular bottom plate on the cushion layer, and then pouring a ring base in the outer circumferential direction of the circular bottom plate;
(2) installing a construction elevator tower frame in the cooling tower to be constructed, close to the tower inlet, along the vertical direction, installing a lift car for ascending and descending on the construction elevator tower frame, installing a construction platform on the top of the construction elevator tower frame, and installing a hydraulic jacking flat bridge on the side surface of the construction elevator tower frame, wherein the heights of the construction elevator tower frame and the construction platform are consistent with the height of a lower ring beam;
(3) a total station is arranged in the center of the ring group, templates of the herringbone pillar buttresses are uniformly installed on the ground in the outer circumferential direction of the ring group at intervals according to set positions, and the herringbone pillar buttresses are poured;
(4) removing the templates of the herringbone column buttress piers, and then erecting bent frames of the herringbone columns above and on the side surfaces of the herringbone column buttress piers along the annular direction of the plurality of herringbone column buttress piers;
(5) paying off herringbone columns, wherein the herringbone columns are cylindrical, each herringbone column inclines towards the direction of the central axis of the cooling tower to be poured, and the paying off process of the herringbone columns is as follows: installing the assembled herringbone column templates on the herringbone column buttress according to a construction drawing; positioning and measuring the inclined intersection angle of the herringbone column template and the herringbone column buttress by using a total station, positioning the spatial position of the herringbone column according to the intersection angle, wherein the angle of the intersection angle is obtained by a drawing;
(6) vertically transporting the herringbone column steel bar construction material to a construction platform through a lift car of a construction elevator tower frame, and then transporting the herringbone column steel bar construction material to a position, needing construction, of the herringbone column through a horizontal channel of a hydraulic jacking flat bridge; installing the bound herringbone column reinforcing steel bars at the set herringbone column positions, pouring herringbone column concrete, and enabling the projection of the circle center of a circumference formed by circle center connecting lines of the top surfaces of all the herringbone columns along the vertical direction to coincide with the circle center of the bottom plate;
(7) pouring a circle of lower ring beam on the top of the herringbone column;
(8) the total station is dismantled, a vertical collimator is arranged at the position of the total station, a disc-shaped receiving target coated with fluorescent paint on the bottom wall is respectively fixed on the bent through four steel wire ropes, and a cross is drawn at the center of the receiving target; the center point of the vertical collimator coincides with the cross center of the disc-shaped receiving target;
(9) determining the spatial position of the cylinder wall by measuring the radiuses of the outer walls of a first section of cooling tower cylinder wall, a second section of cooling tower cylinder wall and a third section of cooling tower cylinder wall to be poured from the center of a disc-shaped receiving target;
(10) continuously lengthening the height of a construction elevator tower frame and a hydraulic jacking flat bridge, conveying materials to a construction platform, hoisting the materials to a construction position by using the hydraulic jacking flat bridge, constructing the cylinder wall of a first section of cooling tower on the lower ring beam, sequentially installing a plurality of embedded parts in the cylinder wall of the first section of cooling tower at intervals along the circumferential direction, sequentially constructing the cylinder wall of a second section of cooling tower and the cylinder wall of a third section of cooling tower on the cylinder wall of the first section of cooling tower in sections till the wall of the cylinder wall of the cooling tower is one tenth higher than the wall of the cylinder wall of the first section of cooling tower, and removing a bent frame of the herringbone column when the concrete strength of the herringbone column reaches the designed strength;
(11) fixedly connecting each embedded part with one end of one groove-shaped channel steel along the horizontal direction, and connecting an angle steel between the groove-shaped channel steel and the cylinder wall of the cooling tower;
(12) and (4) mounting the deicing pipe on the groove-shaped channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911318931.5A CN110984641A (en) | 2019-12-19 | 2019-12-19 | Construction method of ice melting pipe of cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911318931.5A CN110984641A (en) | 2019-12-19 | 2019-12-19 | Construction method of ice melting pipe of cooling tower |
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| CN110984641A true CN110984641A (en) | 2020-04-10 |
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| CN201911318931.5A Pending CN110984641A (en) | 2019-12-19 | 2019-12-19 | Construction method of ice melting pipe of cooling tower |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204359161U (en) * | 2014-11-28 | 2015-05-27 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of cooling stack with horizontal adapter ring girder construction |
| CN207553138U (en) * | 2017-11-02 | 2018-06-29 | 中冶京诚工程技术有限公司 | precast concrete pipe gallery |
-
2019
- 2019-12-19 CN CN201911318931.5A patent/CN110984641A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204359161U (en) * | 2014-11-28 | 2015-05-27 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of cooling stack with horizontal adapter ring girder construction |
| CN207553138U (en) * | 2017-11-02 | 2018-06-29 | 中冶京诚工程技术有限公司 | precast concrete pipe gallery |
Non-Patent Citations (2)
| Title |
|---|
| 刘宏洋: "双曲线冷却塔重点工序施工控制", 《天津科技》 * |
| 叶松鹤: "双曲线冷却塔在八一糖厂的应用", 《中国甜菜糖业》 * |
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Application publication date: 20200410 |