A Vertical Transportation Machinery Arrangement Method and Application for Ultra-Large Nuclear Power Cooling Towers

Abstract

A vertical transportation machinery layout method and application for a super-large nuclear power cooling tower, belonging to the technical field of cooling tower construction, comprising the following steps: determining the position of the hydraulic flat bridge inside the cooling tower; determining the hoisting range of the main tower crane of the cooling tower and the center position of its foundation cap; determining the hoisting range and quantity of the auxiliary tower crane according to the hoisting range of the main tower crane; determining the position of the center of the foundation cap of the auxiliary tower crane on the circular foundation of the cooling tower; after the cooling tower is constructed to a set height, removing the auxiliary tower crane and completing the construction of the remaining part of the cooling tower. The present invention can maximize the vertical transportation role of the tower crane, the hydraulic flat bridge, and the multi-functional elevator in the construction of the cooling tower, and improve the construction efficiency of the cooling tower.

Description

Technical Field

[0001] The invention relates to the technical field of cooling tower construction, and in particular to a vertical transport mechanical arrangement method and application of a nuclear power super-large cooling tower. Background Art

[0002] As the installed capacity of power plants continues to increase, larger cooling towers have also emerged. At present, the height of cooling towers in 660MW and 1000MW power plants exceeds 150m, and the lower diameter exceeds 100m. The vertical transportation machinery for cooling tower construction mostly uses a combination of flat bridges, multi-functional elevators or a combination of tower cranes, flat bridges, and multi-functional elevators to vertically transport formwork, concrete and other materials; before the flat bridge is assembled, the inclined support and lower ring beam construction of the wind tube mainly use mobile cranes and manpower to vertically transport construction materials.

[0003] Mobile cranes have great limitations in lifting speed and range during vertical transportation (slow lifting speed and small lifting range), which leads to slow construction progress and long construction period, seriously affecting construction efficiency. Summary of the invention

[0004] In view of the defects or shortcomings in the prior art, the present invention provides a method and application of vertical transportation machinery layout for a super-large cooling tower in a nuclear power plant, which can maximize the vertical transportation function of tower cranes, hydraulic flat bridges, and multi-functional elevators in the construction of cooling towers and improve the construction efficiency of cooling towers.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] In a first aspect, an embodiment of the present invention provides a method for arranging a vertical transport mechanism of a nuclear power super-large cooling tower, comprising the following steps:

[0007] Determine the position of the hydraulic bridge in the cooling tower;

[0008] Determine the hoisting range of the cooling tower main crane and the center position of its foundation pedestal;

[0009] Determine the hoisting range and quantity of auxiliary tower cranes according to the hoisting range of the main tower crane;

[0010] Determine the position of the center of the auxiliary tower crane foundation cap on the cooling tower ring foundation;

[0011] After the cooling tower is constructed to the set height, the auxiliary tower crane is removed and the remaining construction is completed.

[0012] In a second aspect, the present invention provides an application of the vertical transport machinery arrangement method for a super-large nuclear power cooling tower as described above in the construction of a super-large nuclear power cooling tower.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention can maximize the vertical transportation role of tower crane, hydraulic bridge and multi-functional elevator in the construction of cooling tower by reasonably arranging the vertical transportation machinery of cooling tower during the construction of cooling tower, and add a sub-tower crane on the ring basis to realize the rapid vertical transportation of construction materials such as oblique support, lower ring beam, steel bar and formwork of wind duct wall outside the coverage of the main tower crane and hydraulic bridge hoisting in the tower, thereby reducing labor intensity, improving the construction speed of the lower oblique support, lower ring beam and wind duct of the cooling tower, and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the cooling tower hydraulic flat bridge before it is formed in the first embodiment of the present invention;

[0016] Figure 2 It is a front view of the hydraulic flat bridge of the cooling tower before it is formed in the first embodiment of the present invention;

[0017] Figure 3 It is a top view of the hydraulic flat bridge of the cooling tower after it is formed in the first embodiment of the present invention;

[0018] Figure 4 It is a front view of the hydraulic flat bridge of the cooling tower after it is formed in the first embodiment of the present invention;

[0019] Among them, 1. Main tower crane; 2. Auxiliary tower crane; 3. Vertical shaft foundation; 4. Multifunctional elevator; 5. Hydraulic flat bridge; 6. Annular foundation; 7. Inclined support; 8. Lower ring beam; 9. Wind tube wall. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1

[0022] A typical embodiment of the present invention is a method for arranging a vertical transport mechanism for a nuclear power super-large cooling tower, comprising the following steps:

[0023] Step 1: Determine the position of the hydraulic bridge in the cooling tower;

[0024] like Figure 3 As shown, the position of the hydraulic flat bridge 5 in the cooling tower is determined according to the shortest length L of the front bridge and the radius R2 of the throat of the cooling tower;

[0025] R 桥 =R2-L 最短

[0026] Among them, R 桥 is the position of the hydraulic bridge in the tower; R2 is the throat radius of the cooling tower; L 最短It is the shortest length of the front axle of the hydraulic flat axle.

[0027] Step 2: Determine the hoisting range of the cooling tower main crane and the center position of its foundation pedestal;

[0028] like Figure 1 As shown, the hoisting range of the main tower crane 1 is determined based on the maximum radius R1 of the cooling tower ground plane, the tower top radius R3 and height, and the performance of the main tower crane, ensuring that the hoisting range of the main tower crane 1 and the small tower crane attached to the hydraulic flat bridge 5 can maximize the coverage of the cooling tower construction.

[0029] Specifically, determine the hoisting range of the main tower crane and the center position of its foundation pedestal, specifically:

[0030] Determine the center position of the main tower crane foundation pedestal according to the top radius of the cooling tower, so that the main tower crane does not affect the construction of the cooling tower. At the same time, the center of the main tower crane 1 foundation pedestal should avoid the shaft foundation 3 and other permanent facility foundations located in the center of the cooling tower;

[0031] The length of the main tower crane's boom and the height of the main tower crane are determined according to the maximum radius of the cooling tower ground plane and the height of the cooling tower. The lifting range of the main tower crane is finally determined in combination with the performance of the main tower crane, so that the main tower crane can cover most of the cooling tower.

[0032] Step 3: Determine the hoisting range and quantity of auxiliary tower cranes according to the hoisting range of the main tower crane;

[0033] like Figure 2 As shown, the vertical transportation lifting range and quantity of the auxiliary tower crane are determined based on the range of the inclined support 7, lower ring beam 8, wind tube wall 9 that cannot be covered by the main tower crane 1 during the cooling tower construction, the maximum lifting height of the auxiliary tower crane, and the performance of the auxiliary tower crane 2, to ensure that the lifting range of the main tower crane 1 and the auxiliary tower crane 2 can maximize the coverage of the construction of the inclined support 7, lower ring beam 8, etc. before the hydraulic flat bridge 5 is formed.

[0034] Specifically, determine the hoisting range and quantity of the auxiliary tower crane, specifically:

[0035] First, according to the lifting range of the main tower crane, determine the range of the inclined support, lower ring beam and wind tube wall that the main tower crane cannot cover;

[0036] Then, the lifting range of a single auxiliary tower crane is determined according to the maximum lifting height of the auxiliary tower crane and the performance of the auxiliary tower crane;

[0037] Finally, according to the hoisting range of a single auxiliary tower crane and the inclined supports, lower ring beams and wind tube walls within the range not covered by the main tower crane, the number of auxiliary tower cranes is determined so that multiple auxiliary tower cranes can completely cover the range of the inclined supports, lower ring beams and wind tube walls within the range not covered by the main tower crane.

[0038] Among them, the lowest height of the air duct when the front axle of the hydraulic flat bridge 5 reaches the longest length is also the maximum hoisting height of the auxiliary tower crane 2.

[0039] Step 4: Determine the position of the center of the auxiliary tower crane foundation cap on the circular foundation of the cooling tower;

[0040] According to the hoisting range and quantity of the auxiliary tower crane 2, determine the position of the center of the auxiliary tower crane 2 foundation cap on the circular foundation 6 of the cooling tower, and make full use of the circular foundation 6 as the foundation cap of the auxiliary tower crane 2, reducing the temporary facility cost of the cooling tower and improving the economy of the cooling tower.

[0041] Step 5: After the cooling tower is constructed to the set height, remove the auxiliary tower crane and complete the construction of the remaining part of the cooling tower.

[0042] Among them, the set height refers to the lowest height of the cooling tower air duct when the front axle of the hydraulic flat bridge 5 reaches the maximum length. After reaching this height, both the hydraulic flat bridge 5 and the multi-functional elevator 4 can be installed. As Figure 3 and Figure 4 shown, at this time, the auxiliary tower crane 2 will be removed, and the main tower crane 1, the hydraulic flat bridge 5 and the multi-functional elevator 4 will be used to complete the construction of the cooling tower air duct and its upper auxiliary facilities.

[0043] Embodiment 2

[0044] This embodiment provides an application of the vertical transportation machinery layout method for a nuclear power super-large cooling tower as described in Embodiment 1 in the construction of a nuclear power super-large cooling tower.

[0045] The vertical transportation machinery layout method for the nuclear power super-large cooling tower described in the present invention can maximize the vertical transportation function of the tower crane, the hydraulic flat bridge and the multi-functional elevator in the construction of the cooling tower during the construction of the nuclear power super-large cooling tower, and add an auxiliary tower crane on the circular foundation to realize the rapid vertical transportation of construction materials such as inclined supports, lower ring beams, steel bars and formworks of the air duct wall outside the coverage of the main tower crane and the hydraulic flat bridge in the tower, reducing the labor intensity, improving the construction speed of the lower inclined supports, lower ring beams and air ducts of the cooling tower, and shortening the construction period of the cooling tower.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for arranging a vertical transportation machinery for a super-large nuclear power cooling tower, characterized in that, The following steps are involved: Determine the position of the hydraulic bridge in the cooling tower; Determine the hoisting range of the cooling tower main crane and the center position of its foundation pedestal; Determine the hoisting range and quantity of auxiliary tower cranes according to the hoisting range of the main tower crane; Determine the position of the center of the auxiliary tower crane foundation cap on the cooling tower ring foundation; After the cooling tower is constructed to the set height, the auxiliary tower crane is removed and the remaining part of the cooling tower is constructed; Among them, determine the hoisting range of the main tower crane and the center position of its foundation pedestal, specifically: Determine the center position of the main tower crane foundation according to the top radius and top height of the cooling tower, so that the main tower crane does not affect the construction of the cooling tower; Determine the main tower crane boom length and main tower crane height according to the maximum radius of the cooling tower ground plane and the height of the cooling tower. Finally determine the main tower crane hoisting range in combination with the main tower crane performance, so that the main tower crane can cover most of the cooling tower range. Determine the hoisting scope and quantity of auxiliary tower cranes, specifically: First, according to the lifting range of the main tower crane, determine the range of the inclined support, lower ring beam and wind tube wall that the main tower crane cannot cover; Then, the lifting range of a single auxiliary tower crane is determined according to the maximum lifting height of the auxiliary tower crane and the performance of the auxiliary tower crane; Finally, the number of auxiliary tower cranes is determined based on the hoisting range of a single auxiliary tower crane and the inclined supports, lower ring beams and wind tube walls within the range that the main tower crane cannot cover, so that multiple auxiliary tower cranes can completely cover the construction range of the inclined supports, lower ring beams and wind tube walls within the range that the main tower crane cannot cover.

2. The vertical transportation machinery layout method for a nuclear power ultra-large cooling tower as claimed in claim 1, wherein The position of the hydraulic flat bridge is determined according to the shortest length of the front bridge and the throat radius of the cooling tower; R 桥 = R2 - L 最短 Among them, R 桥 is the position of the hydraulic flat bridge inside the tower; R2 is the radius of the throat of the cooling tower; L 最短 is the shortest length of the front bridge of the hydraulic flat bridge.

3. A method for arranging a vertical transportation machine of a nuclear power ultra-large cooling tower according to claim 1, characterized in that, The center of the main tower crane foundation pedestal should avoid the shaft and other permanent facility foundations located in the center of the cooling tower.

4. The vertical transportation machinery layout method for a super-large nuclear power cooling tower according to claim 1, characterized in that, The maximum hoisting height of the auxiliary tower crane is the lowest height of the wind tube when the front bridge of the hydraulic flat bridge reaches the longest length.

5. The vertical transportation machinery layout method for a nuclear power ultra-large cooling tower according to claim 1, characterized in that, The auxiliary tower crane foundation support platform is integrated with the cooling tower annular foundation and is fixed on the cooling tower annular foundation.

6. The vertical transportation machinery layout method for a super-large nuclear power cooling tower as described in claim 1, characterized in that, The set height refers to the minimum height of the cooling tower wind duct when the front axle of the hydraulic flat bridge reaches the maximum length.

7. A vertical transportation machinery layout method for a nuclear power super-large cooling tower as described in claim 1, characterized in that, The main tower crane, hydraulic bridge and multi-functional elevator are used to complete the construction of the cooling tower duct and its upper ancillary facilities.

8. Application of the vertical transport machinery arrangement method for a nuclear power super-large cooling tower according to any one of claims 1 to 7 in the construction of a nuclear power super-large cooling tower.

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