Cooling tower and construction method thereof

Abstract

The embodiment of the invention provides a cooling tower and a construction method thereof. The cooling tower comprises a tower body; the base is supported on the ground, the tower body is arranged on the base, the base comprises a main body part, the main body part comprises a plurality of first supporting pieces, the first supporting pieces are connected in a surrounding mode to form the main body part, and every two adjacent first supporting pieces are fixedly connected; the supporting part is arranged above the main body part, and a pouring groove is defined in the upper side of the supporting part; a runner is defined in the first supporting piece, a pouring hole communicated with the runner is formed in the first supporting piece, the runner is communicated with the pouring groove, and concrete is poured in the runner and the pouring groove. According to the cooling tower, the construction period of the cooling tower is shortened, and the construction difficulty and cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a cooling tower of a power plant, and in particular to a cooling tower and a construction method thereof. BACKGROUND

[0002] As an indispensable key structure in the thermal cycle system of a power plant, the cooling tower plays a vital role in ensuring the safe, stable and efficient operation of the generator set. The cooling tower effectively removes the waste heat generated during the operation of the generator set through the circulating cooling water system, reduces the working temperature of the equipment, and not only helps to prolong the service life of the key equipment, but also significantly improves the overall thermal efficiency and power generation capacity of the power plant.

[0003] At present, the cooling tower of a conventional power plant is mostly made of reinforced concrete structure, and the vertical support system thereof is usually designed as X-shaped or Y-shaped inclined columns. During construction, such a structure needs to be supported by a large-scale and high-difficulty scaffold support system to ensure the structural stability and construction safety during concrete pouring. This not only leads to a huge amount of scaffold work and high investment in materials and labor, but also prolongs the construction period. SUMMARY

[0004] The embodiments of the present application provide a cooling tower and a construction method thereof. By optimizing the structure of the base, the main body part is formed by splicing the first support pieces, and then the base is formed by connecting the support part, thereby realizing efficient connection and rapid construction between the tower body and the foundation, which is conducive to shortening the construction period of the cooling tower and reducing the construction difficulty and cost.

[0005] In the first aspect, the embodiments of the present application provide a cooling tower, comprising: a tower body; a base supported on the ground, wherein the tower body is arranged on the base, and the base comprises: a main body part comprising a plurality of first support pieces, wherein the plurality of first support pieces are connected to form the main body part, and adjacent two first support pieces are fixedly connected; a support part arranged above the main body part, wherein the upper side of the support part defines a pouring groove; a flow channel is defined in the first support piece, the first support piece is provided with a pouring hole in communication with the flow channel, and the flow channel and the pouring groove are in communication, and the flow channel and the pouring groove are both filled with concrete.

[0006] In some embodiments, the first support piece has a first support end away from the tower body and a second support end close to the tower body along the height direction, and the first support end and the second support end are both arranged as two along the circumference of the base.

[0007] According to some embodiments of the present application, the first support piece is formed as an X-shaped pipe piece.

[0008] According to some embodiments of the present application, the first support end of two adjacent first support members is fixedly connected by a concrete column foot.

[0009] According to some embodiments of the present application, the first support end is provided with a plurality of studs, and the plurality of studs are arranged on the peripheral wall of the first support end; and / or, the first support end is provided with a plurality of shear-resistant ring plates which are arranged at intervals along the height direction; and / or, the first support end is provided with a plurality of reinforcing rib plates which are arranged at intervals around the peripheral wall of the first support end.

[0010] According to some embodiments of the present application, the first support end is provided with a bottom plate away from the end face of the tower body, and the bottom plate is provided with a mounting hole penetrating through in the height direction; the main body part further comprises a ground anchor member, one end of the ground anchor member is inserted into the ground away from the tower body, and the ground anchor member is bent to form a hook portion, and one end of the ground anchor member close to the tower body penetrates through the mounting hole and is fixedly connected with the limiting member abutting against the bottom plate.

[0011] In some embodiments, a plurality of reinforcing plates are arranged at intervals along the height direction in the flow channel, the reinforcing plates have flow-through holes penetrating through in the height direction, and part of the edges of the reinforcing plates are spaced apart from the inner wall of the flow channel to form air vents.

[0012] In some embodiments, the support part comprises a plurality of first connecting members and a plurality of second connecting members, one end of the first connecting member towards the tower body defines a first slot section, and one end of the second connecting member towards the tower body defines a second slot section; the first connecting member is fixedly connected with the top end of the first support member, the top end of the first support member defines an outlet communicating with the flow channel, the first connecting member is provided with a through hole corresponding to the outlet, and the through hole communicates with the first slot section; the plurality of first connecting members and the plurality of second connecting members are arranged at intervals and connected end to end, the plurality of first slot sections and the plurality of second slot sections communicate to form the pouring channel; and / or, the first connecting member and the first support member are an integral part when the cooling tower is constructed.

[0013] In some embodiments, a plurality of first reinforcing steel bars and a plurality of second reinforcing steel bars are arranged in the pouring channel, two ends of the first reinforcing steel bars are fixedly connected with two side walls of the pouring channel respectively, the second reinforcing steel bars extend along the circumference of the tower body, and the second reinforcing steel bars are fixedly connected with the first reinforcing steel bars; and / or, the first reinforcing steel bars and the first connecting members / second connecting members are an integral part when the cooling tower is constructed.

[0014] In a second aspect, the present application provides a construction method of a cooling tower, which is applied to the cooling tower described above, and comprises the following steps:

[0015] S1: a plurality of first supporting pieces are respectively aligned with ground anchors on the ground, are preliminarily pre-tightened through limiting pieces, and form a main body part;

[0016] S2: hoisting a second connecting piece above the main body part, and sequentially welding the first connecting piece and the second connecting piece to form a supporting part;

[0017] S3: fastening the limiting pieces;

[0018] S4: simultaneously positioning a plurality of pouring equipment, pouring concrete into the flow channel from the pouring hole, and filling the flow channel in the main body part and the pouring groove of the supporting part;

[0019] S5: pouring a concrete column foot;

[0020] S6: pouring a tower body above the supporting part.

[0021] The cooling tower and the construction method thereof have the advantages that the main body part is formed by splicing the first supporting pieces, the base is formed by connecting the supporting part, the flow channel is arranged in the first supporting piece, and the pouring hole is formed, so that the continuous pouring mode of the concrete is realized, which is transported from the internal flow channel to the pouring groove. Compared with the mode of relying on the external scaffold for concrete transportation and formwork support in the traditional construction, the erection range and height of the high and complex scaffold are greatly reduced, so that the amount of scaffold materials and the labor input are significantly reduced. Without the need for large-scale erection of supporting scaffolds, the site construction organization is simplified, the material rental, transportation and labor costs are reduced, the construction site space is released, which is conducive to the cross operation of other procedures, and the overall progress control ability of the power plant construction is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0023] Figure 1 FIG. 1 is a structural schematic diagram of a cooling tower according to an embodiment of the present application;

[0024] Figure 2 FIG. 2 is a structural schematic diagram of a first supporting piece with a first connecting piece according to an embodiment of the present application;

[0025] Figure 3 FIG. 3 is a structural schematic diagram of the first supporting piece installed on the ground according to an embodiment of the present application;

[0026] Figure 4 FIG. 4 is a structural schematic diagram of a second connecting piece connected to the first connecting piece to form a partial supporting part according to an embodiment of the present application;

[0027] Figure 5 FIG. 5 is a structural schematic diagram of the first connecting pieces connected through a concrete column foot according to an embodiment of the present application;

[0028] Figure 6 Structure diagram of a first support end of an embodiment of the present application;

[0029] Figure 7 Structure diagram of a second support end of an embodiment of the present application;

[0030] Figure 8 Structure diagram of a first support end and a ground anchor of an embodiment of the present application;

[0031] Figure 9 Structure diagram of a first support member with a first connecting member of an embodiment of the present application;

[0032] Figure 10 Structure diagram of a first connecting member of an embodiment of the present application;

[0033] Figure 11 Structure diagram of a first connecting member provided with a first reinforcing steel bar and a second reinforcing steel bar of an embodiment of the present application;

[0034] Figure 12 Step diagram of a construction method of an embodiment of the present application.

[0035] Reference signs:

[0036] 100 - cooling tower

[0037] 10 - tower body

[0038] 20 - base

[0039] 21 - main body part; 211 - first support member; 2111 - first support end; 2111a - stud; 2111b - shear ring plate; 2111c - reinforcing steel plate; 2112 - second support end; 212 - pouring hole; 213 - bottom plate; 2131 - mounting hole; 214 - reinforcing plate; 215 - flow-through hole; 216 - air vent

[0040] 22 - support part; 2211 - first slot section; 2212 - second slot section; 222 - first connecting member; 2221 - through hole; 223 - second connecting member; 224 - first reinforcing steel bar; 225 - second reinforcing steel bar

[0041] 23 - concrete column foot

[0042] 24 - ground anchor; 241 - hook part

[0043] 25 - limiting member

[0044] The specific embodiments of the application have been shown by the above drawings, and will be described in more detail hereinafter. These drawings and detailed description are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to any embodiment of the application, unless specified otherwise. Accordingly, when the description of the exemplary embodiments contains language that can imply limitations on the scope of the application, such limitations are not intended to apply to any specific embodiment unless specifically recited in that specific embodiment. For a better understanding, the exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings, in which:

[0046] As an indispensable key structure in the thermal cycle system of a power plant, the cooling tower plays a crucial role in ensuring the safe, stable and efficient operation of the generator set. The cooling tower effectively removes the waste heat generated during the operation of the generator set through the circulating cooling water system, reduces the working temperature of the equipment, not only helps to prolong the service life of the key equipment, but also significantly improves the overall thermal efficiency and power generation capacity of the power plant.

[0047] At present, the cooling tower of a conventional power plant mostly adopts a reinforced concrete structure, and the vertical support system thereof is usually designed as an X-shaped or Y-shaped inclined column. During construction, such a structure needs to be supported by a large-scale and high-difficulty scaffold support system to ensure the structural stability and construction safety during concrete pouring. This not only leads to a huge amount of scaffold engineering, high investment in materials and labor, but also prolongs the construction period.

[0048] Therefore, the embodiments of the application provide a cooling tower and a construction method thereof. By optimizing the structure of the base, the main body part is formed by splicing the first support pieces, and then the base is formed by connecting the main body part with the support part, thereby realizing efficient connection and rapid construction between the tower body and the foundation, which is conducive to shortening the construction period of the cooling tower and reducing the construction difficulty and cost.

[0049] The technical solutions of the application and how the technical solutions of the application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the application will be described below with reference to the drawings.

[0050] Reference Figures 1 to 11 In a first aspect, the embodiments of the application provide a cooling tower 100, which comprises a tower body 10 and a base 20.

[0051] The tower body 10 is a main structure of the cooling tower 100, used for accommodating cooling devices (such as water spraying devices, fillers, etc.) and forming an air flow passage, realizing heat exchange between circulating water and air, and completing the heat dissipation function.

[0052] The base 20 is supported on the ground, and the tower body 10 is arranged on the base 20 to form a load-bearing foundation of the cooling tower 100, directly supporting the tower body 10 and transmitting the load thereof to the ground.

[0053] The base 20 includes a main body part 21 and a support part 22. The main body part 21 includes a plurality of first support members 211, which are connected in a ring shape to form the main body part 21, forming a stable structure system in a ring shape or a similar ring shape. The main body part 21 not only bears the vertical load transmitted from the tower body 10, but also has good anti-overturning and lateral force resistance capacity, providing stable support for the tower body 10.

[0054] The adjacent two first support members 211 are fixedly connected. For example, the adjacent two first support members 211 can be fixed by welding, or a transition connecting member (such as a connecting plate) can be arranged between the two first support members 211. The transition connecting member can be provided with connecting holes at different positions, providing a certain adjustment margin for the installation of the first support members 211. The positions of the adjacent two first support members 211 can be finely adjusted, which is conducive to forming a stable main body part 21.

[0055] The support part 22 is arranged above the main body part 21, and an upper side of the support part 22 defines a pouring groove for pouring and forming an upper structure of the base 20 of the cooling tower 100. The support part 22 plays a double role of formwork and support during the construction stage, and its structure design facilitates the cooperation with the main body part 21 to form a complete base 20 and provides a flat and stable connecting surface for the installation of the tower body 10.

[0056] The first support member 211 defines a flow channel therein, and the first support member 211 is provided with a pouring hole 212 in communication with the flow channel. The flow channel and the pouring groove are in communication, and the flow channel and the pouring groove are both filled with concrete. In this way, during the construction stage, the flow channel can be filled with concrete by pouring equipment, filling the flow channel and the pouring groove, so that the base 20 forms a monolithic structure, which is conducive to improving the integrity of the base 20 to support and stabilize the tower body 10.

[0057] The cooling tower 100 of the present application, by optimizing the structure of the base 20, forms the main body part 21 by splicing the first support member 211, and then connects the support part 22 to form the base 20, and by setting a flow channel inside the first support member 211 and opening a pouring hole 212, realizes a continuous pouring mode of concrete from the internal flow channel to the pouring groove. Compared with the mode of relying on external scaffolding for concrete conveying and formwork support in traditional construction, the erection range and height of high and complex scaffolding are greatly reduced, thereby significantly reducing the amount of scaffolding materials and labor input. Moreover, due to the reduction of scaffolding erection and removal work in high-altitude operation, the safety risks such as high-altitude falling and frame instability are reduced. At the same time, the concrete is pumped through the flow channel, simplifying the pouring process, improving the degree of construction mechanization and operation efficiency, and shortening the construction period of the base 20 of the cooling tower 100. Without the need for large-scale erection of supporting scaffolding, the site construction organization is simplified, the material rental, transportation and labor costs are reduced, and at the same time the construction site space is released, which is conducive to the cross operation of other procedures and improves the overall progress control ability of power plant construction.

[0058] In addition, the flow channel, the pouring hole 212 and the pouring groove are in communication, so that the concrete can be continuously and uniformly poured between the main body part 21 and the support part 22, avoiding the cold joint or poor combination problems that may be caused by traditional segmented construction, and improving the integrity and durability of the base 20 structure.

[0059] In some possible embodiments, the support part 22 can be a split structure, which is hoisted above the first support member 211 to assemble the support part 22 after the main body part 21 is installed in place. Part of the structure of the support part 22 can be an integral structure with the first support member 211 (such as the first connecting member 222 described below), further reducing the construction steps and improving the construction efficiency. Alternatively, the support part 22 and the first support member 211 can be independent of each other before construction, in order to facilitate storage and transportation.

[0060] Reference Figure 2 , Figure 3 , Figure 4 and Figure 9In some embodiments, the first support 211 has a first support end 2111 away from the tower body 10 and a second support end 2112 close to the tower body 10 along the height direction, and both the first support end 2111 and the second support end 2112 are arranged in two along the circumference of the base 20. The interval between the two first support ends 2111 is greater than the interval between the two second support ends 2112, so that the plurality of first supports 211 form a conical support structure spreading outward after being connected, which has good anti-overturning capacity and horizontal load dispersion capacity, can effectively resist wind load, earthquake action and eccentric load transmitted by the tower body 10, and improves the overall stability of the base 20. At the same time, the conical support structure spreading outward effectively transmits the vertical pressure and bending moment of the superstructure to a larger range of foundation through the inclined first support 211, reduces the local foundation stress, and is beneficial to improve the bearing efficiency.

[0061] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 9 According to some embodiments of the present application, the first support 211 is formed as an X-shaped pipe, specifically, a single first support 211 presents a cross-shaped X structure in space, which is formed by two tubular members extending in diagonal directions and intersecting and fixedly connected in the middle. The first support 211 has two first support ends 2111 (away from the tower body 10) and two second support ends 2112 (close to the tower body 10) along the height direction, and the transverse distance between the two first support ends 2111 is greater than the distance between the two second support ends 2112, forming a space configuration of "wide outside and narrow inside". In this way, the X-shaped structure itself has excellent lateral force resistance capacity. After arranging a plurality of X-shaped pipes in the circumference of the base 20, the X-shaped intersection points are connected to each other to form a circumferentially continuous space truss support system. This system can effectively resist shear force and bending moment caused by horizontal wind load, earthquake action and asymmetric load, and significantly improve the overall stiffness and stability of the base 20. The two inclined rods of the X-shaped pipe can simultaneously bear loads from different directions, so that the concentrated force transmitted by the tower body 10 is evenly spread in all directions through the X-shaped structure, avoiding local stress concentration and improving the symmetry and balance of load transmission.

[0062] In some possible embodiments, the two inclined rods of the X-shaped pipe are provided with through flow channels, and a pouring hole 212 communicating with the pouring groove is arranged at the connection of the upper intersection area or the support part 22. Concrete can be pumped to the top pouring area through the flow channel of any inclined rod to realize double-channel feeding and improve pouring efficiency and reliability.

[0063] According to some embodiments of the present application, the first support ends 2111 of two adjacent first support members 211 are fixedly connected by the concrete column foot 23. Although a single first support member 211 has good lateral resistance, when multiple independent components are arranged around, there are still problems of weak joints and insufficient cooperative force. By connecting the first support ends 2111 of two adjacent first support members 211 by the concrete column foot 23, all the first support members 211 form a continuous closed ring frame structure around the periphery of the base 20, which is beneficial to improve the overall stiffness of the base 20 and the space cooperative working capacity. During the operation of the cooling tower 100, due to temperature changes, poor symmetry of wind load or local deformation of the foundation, it is easy to produce ring tensile stress or uneven settlement trend. The concrete column foot 23 as a ring connecting component can effectively bear and transfer these ring internal forces, coordinate the deformation between the support members, and prevent local cracking or instability.

[0064] In some possible embodiments, during the pouring of the concrete column foot 23, the exposed end of the first support member 211 can be wrapped at the same time, the internal flow channel outlet area is reinforced and sealed to prevent slurry leakage or pressure loss during pumping of the concrete, and the normal operation of the flow channel is ensured.

[0065] Referring to Figure 6 , Figure 7 and Figure 8 , according to some embodiments of the present application, the first support end 2111 is provided with a plurality of pegs 2111a, which are arranged in an array on the peripheral wall of the first support end 2111. The pegs, as typical shear connectors, are fixed on the peripheral wall of the first support end 2111 by welding or pre-burying, forming a dense "peg array". During the pouring of the concrete column foot 23, the pegs 2111a are wrapped in the concrete, and the interface shear resistance between the first support member 211 (metal structure) and the concrete column foot 23 (concrete structure) is significantly enhanced through mechanical interlocking and friction effect. Effectively prevent relative sliding between the two during the force process, realize the cooperative work of steel-concrete, improve the integrity and durability of the joint.

[0066] In some embodiments, the first support end 2111 is provided with a plurality of shear ring plates 2111b arranged at intervals in the height direction. Exemplarily, the shear ring plate 2111b can be a ring-shaped steel plate, which is perpendicular to the axis of the first support member 211 and is arranged at equal intervals or variable intervals along the height direction of the first support end 2111. When the concrete column foot 23 is poured, the concrete is filled between the shear ring plates 2111b, forming an "anchoring tooth section". Through the ring constraint and radial pressure bearing of the shear ring plate 2111b on the concrete, the shear bearing capacity and pull-out resistance between the first support end 2111 and the concrete are greatly improved. In addition, the ring plate structure can effectively inhibit the cracking and spalling of the concrete in the high stress area, and improve the ductility and energy dissipation capacity of the joint.

[0067] In some embodiments, the first support end 2111 is provided with a plurality of reinforcing rib plates 2111c, which are arranged at intervals around the peripheral wall of the first support end 2111, and one end of each reinforcing rib plate 2111c is connected to the pipe wall of the first support 211, and the other end can extend into the interior of the concrete column foot 23. The reinforcing rib plates 2111c are used to enhance the local rigidity and anti-deformation capacity of the first support end 2111, so as to prevent the pipe wall from buckling or twisting due to concentrated stress during concrete pouring or under stress. At the same time, the reinforcing rib plates 2111c form a "fin effect" in the concrete, increasing the contact area and mechanical engagement force between the metal and the concrete, and assisting in bearing the shear force and bending moment.

[0068] Specifically, the reinforcing rib plates 2111c can have a triangular structure, a trapezoidal structure, or a sector structure, one side wall of each reinforcing rib plate 2111c is welded to the peripheral wall of the first support end 2111, and the other side wall is welded to the bottom plate 213 located at the end of the first support end 2111 away from the tower body 10, thereby improving the stability of the overall structure of the first support end 2111.

[0069] It can be understood that when the above three structures (the stud 2111a, the shear ring plate 2111b, and the reinforcing rib plate 2111c) are used alone or in combination, a multiple reinforcement mechanism can be achieved, that is, a "point-line-surface" composite anchoring: the stud 2111a provides pointwise shear resistance, the shear ring plate 2111b provides line-type anchoring, and the reinforcing rib plate 2111c provides surface-type rigidity support, forming a multi-level and highly reliable connection system. Adapt to different stress modes: under the combined action of axial pressure, shear force, bending moment, and torque, the multiple structures respond cooperatively to ensure that the joint remains stable under various working conditions. Improve construction fault tolerance and quality controllability: even if there is a small defect in the local concrete pouring, the overall connection performance can still be guaranteed by other reinforcing structures, thereby reducing the impact of construction quality fluctuations on structural safety.

[0070] Reference Figure 6 , Figure 7 and Figure 8 According to some embodiments of the present application, the end face of the first support end 2111 away from the tower body 10 is provided with a bottom plate 213 fixed to the end face of the first support end 2111 as a pressure bearing platform for force transmission, which uniformly transmits the axial pressure, bending moment, and other loads borne by the first support 211 to the concrete column foot 23 and the foundation below. The bottom plate 213 is provided with mounting holes 2131 penetrating in the height direction, providing mounting interfaces for connecting the ground anchor system and enhancing the anchoring capacity of the support end and the foundation.

[0071] The main body part 21 further comprises a ground anchor 24, which is inserted into the ground away from one end of the tower body 10 and is bent to form a hook portion 241, which penetrates into the foundation (such as a concrete foundation or a rock-soil layer) and resists the upward force through mechanical anchoring to prevent the first support end 2111 from being pulled up under the action of the overturning moment. The ground anchor 24 acts as a pre-stressed or passive force member and continuously provides a downward restraining force during the operation of the cooling tower 100, thereby improving the overall stability of the base 20.

[0072] The ground anchor 24 is inserted into the ground through the mounting hole 2131, and the limiting part 25 abutting against the bottom plate 213 is fixedly connected to the end of the ground anchor passing through the mounting hole 2131. The limiting part is fixedly connected (such as by screw connection, welding or mechanical clamping) to the end of the ground anchor 24 passing through the mounting hole 2131 and abuts against the bottom plate 213, which is used to lock the ground anchor 24 and prevent it from retracting or loosening during the force process, thereby ensuring that the anchoring force is continuously effective.

[0073] Optionally, the limiting part 25 can be a nut, and the end of the ground anchor 24 towards the tower body 10 is provided with a thread. The limiting part 25 is threadedly connected to the ground anchor 24 to adjust the support state of the first support part 211.

[0074] Reference Figure 6 , Figure 7 and Figure 9 In some embodiments, the flow channel is provided with reinforcing plates 214 at equal intervals along the height direction. The reinforcing plates 214 have flow-through holes 215 penetrating along the height direction. In this way, the first support part 211 acts as a load-bearing member and bears complex axial force, bending moment and shear force during construction and operation. The reinforcing plates 214 act as transverse stiffening ribs and can effectively constrain the local buckling of the flow channel pipe wall, thereby improving the overall stability and load-bearing capacity of the support part. During the pumping of concrete, high-speed flowing concrete is prone to segregation or bubble aggregation in long-distance inclined pipelines. The reinforcing plates 214 segment the flow channel and play a role in "straightening", thereby slowing down the sudden change of flow rate and improving the uniformity of concrete flow.

[0075] Part of the edge of the reinforcing plate 214 is spaced apart from the inner wall of the flow channel to form an air vent 216. When concrete is pumped upward along the inclined or vertical flow channel, air is easily compressed and accumulated above the reinforcing plate 214 to form an "air plug", which hinders the flow of concrete and even causes the pumping to be interrupted. The air vent 216 provides an escape channel for air to be discharged upward along the flow channel wall, thereby avoiding the air blockage phenomenon. After the air is smoothly discharged, the pressure distribution in the flow channel is more uniform, the pulsating pressure caused by gas-liquid two-phase flow is reduced, which is beneficial to the protection of the pumping equipment and improves the construction stability.

[0076] Reference Figure 1 , Figure 4 , Figure 5 and Figure 10In some embodiments, the support part 22 comprises a plurality of first connecting pieces 222 and a plurality of second connecting pieces 223, the first connecting pieces 222 define first slot sections 2211 towards one end of the tower body 10, the second connecting pieces 223 define second slot sections 2212 towards one end of the tower body 10, the plurality of first connecting pieces 222 and the plurality of second connecting pieces 223 are arranged alternately and connected end to end, and the plurality of first slot sections 2211 and the plurality of second slot sections 2212 are communicated to form the pouring channel. The first connecting piece 222 is a key force-bearing and functional unit of the support part 22, which forms the first slot section 2211 towards one end of the tower body 10 and constitutes a component of the pouring channel. The second connecting piece 223 is arranged alternately with the first connecting piece 222, and the end thereof forms the second slot section 2212 which is jointly spliced with the first slot section 2211 to form a complete annular pouring channel.

[0077] The first connecting piece 222 is fixedly connected (welded or bolted) to the top end of the first support piece 211 to ensure continuous force transmission of the structure. The top end of the first support piece 211 defines an outlet communicated with the flow channel, and the first connecting piece 222 is provided with a through opening 2221 corresponding to the outlet, the through opening 2221 being communicated with the first slot section 2211 to form an unobstructed channel for the concrete from the flow channel to the pouring channel, thereby ensuring the continuity of pumping.

[0078] In this way, by alternately splicing, a closed annular structure is formed, the plurality of first slot sections 2211 and the plurality of second slot sections 2212 are communicated to constitute a complete and continuous pouring channel. This design realizes "segmental prefabrication and integral molding", which is convenient for transportation and hoisting and ensures the integrity of the final structure. After being spliced end to end, the support part 22 itself has sufficient rigidity and can be used as a stable platform for subsequent construction of the tower body 10.

[0079] In some embodiments, the first connecting piece 222 and the first support piece 211 are an integral piece when the cooling tower 100 is constructed, for example, the first connecting piece 222 and the first support piece 211 can be welded as an integral piece, which is conducive to eliminating the connection joint between the first connecting piece 222 and the first support piece 211, improving the continuity and strength of the structure, at the same time, simplifying the on-site installation process, improving the construction efficiency of the cooling tower 100, and further ensuring the precise alignment of the through opening 2221 and the outlet of the flow channel, avoiding misalignment to cause blockage of the flow channel.

[0080] Alternatively, the first connecting piece 222 and the second connecting piece 223 can both be U-shaped pieces. To avoid serious interference during assembly, two second connecting ends can be connected to one first connecting piece 222 at the same time, the length of the first connecting piece 222 can be greater than the distance between the two second connecting ends and less than the distance between the two first connecting ends, and the length of the second connecting piece 223 can be equal to the distance between the two first connecting pieces 222.

[0081] Reference Figure 11In some embodiments, the array in the pouring groove is provided with a plurality of first reinforcing steel bars 224 and a plurality of second reinforcing steel bars 225. The two ends of the first reinforcing steel bars 224 are fixedly connected with the two side walls of the pouring groove respectively, forming a transversely penetrating tie steel bar. During the operation of the cooling tower 100, the support part 22 bears the circumferential tensile force and local bending moment from the tower body 10. The first reinforcing steel bars 224 act as transverse force bearing bars, effectively resisting these loads and preventing cracking or breaking. Before the concrete has not yet solidified, the first reinforcing steel bars 224 can act as a temporary support framework to maintain the geometric shape of the formwork (i.e. the first connecting member 222 and the second connecting member 223) and prevent deformation. The two side walls are tied together by the first reinforcing steel bars 224 to ensure that the load is evenly distributed in the circumferential direction and to avoid local stress concentration.

[0082] The second reinforcing steel bars 225 extend along the circumference of the tower body 10. The second reinforcing steel bars 225 are fixedly connected with the first reinforcing steel bars 224. The second reinforcing steel bars 225 constitute a circumferential reinforcing system. The upper structure of the base 20 of the cooling tower 100 is prone to circumferential tensile stress under the action of wind load, temperature change or operating internal pressure. The second reinforcing steel bars 225 act as main force bearing steel bars and effectively bear such tensile force to prevent the development of circumferential cracks. After being fixedly connected with the first reinforcing steel bars 224, a spatial steel mesh is formed, which significantly enhances the restraint effect and crack resistance of the concrete. The presence of the second reinforcing steel bars 225 improves the plastic deformation capacity of the structure, which can absorb more energy under earthquake or sudden load and prevent brittle failure.

[0083] In some embodiments, the first reinforcing steel bars 224 and the first connecting members 222 are integrated when the cooling tower 100 is built. The steel bars are rigidly connected with the metal connecting members, avoiding the loosening or misalignment problems that may exist in traditional binding connection, ensuring a direct and reliable force path. The first reinforcing steel bars 224 and the first connecting members 222 are preformed in the factory, and do not need to be bound one by one on site, reducing the high-altitude operation time and labor input and speeding up the construction progress.

[0084] Reference Figures 1 to 12 In a second aspect, the application provides a construction method of a cooling tower 100, which is applied to the above-mentioned cooling tower 100 and comprises the following steps:

[0085] Reference Figure 2 and Figure 3 S1: A plurality of first support members 211 are respectively aligned with the ground anchors 24 on the ground, and are preliminarily pre-tightened by the limiting members 25 to form the main body part 21.

[0086] The pre-prepared first support 211 (X-shaped pipe) is accurately installed in the designed position on the foundation, so that the mounting hole 2131 on the bottom plate 213 is aligned with the embedded ground anchor 24. The ground anchor 24 is preliminarily pre-tightened by the limiting piece 25 (such as a nut), and the temporary fixing and spatial positioning of the first support 211 are realized, forming a stable annular main body 21 skeleton.

[0087] In this way, the installation of the main load-bearing structure can be completed without the need to erect high scaffolding, providing a stable platform for subsequent hoisting operations.

[0088] Optionally, during construction, in order to improve the installation stability of the first support 211, the first support 211 can be supported and fixed by a cable wind rope. After the base 20 is formed, the cable wind rope is removed, and the construction is convenient.

[0089] The first support 211 and the first connecting piece 222 can be welded as an integral structure.

[0090] Reference Figure 4 S2: hoist the second connecting piece 223 to the upper side of the main body 21, and sequentially weld the first connecting piece 222 and the second connecting piece 223 to form the support part 22.

[0091] The second connecting piece 223 is hoisted to the top end of the installed first support 211, and is alternately arranged with the first connecting piece 222 fixed in advance on the first support 211. The first connecting piece 222 and the second connecting piece 223 are connected end to end by welding to form a continuous closed annular structure, i.e. the support part 22, and the first groove section 2211 and the second groove section 2212 are connected to form a pouring groove. A self-supporting formwork system is formed, without the need for an additional formwork body, and the welding connection ensures the structural integrity and sealing, preventing pouring leakage.

[0092] Optionally, the first reinforcing steel bar 224 and the first connecting piece 222 can be an integral structure, and at the same time, the first reinforcing steel bar 224 and the second connecting piece 223 can also be an integral structure, which is a pre-prepared integrated structure when transported to the construction site, reducing the construction steps and being conducive to speeding up the construction progress. After the first connecting piece 222 and the second connecting piece 223 are welded to form the support part 22, the second reinforcing steel bar 225 is connected with the first reinforcing steel bar 224 by means of bundling and welding cooperation, forming a spatial steel mesh to improve the structural strength of the base 20.

[0093] S3: tighten the limiting piece 25. The limiting piece 25 is tightened with the ground anchor 24, a pre-stress is applied, the first support 211 and the foundation form a rigid anchoring, the overall overturning resistance is improved, the active restraint mechanism of "installing first and tensioning later" is realized, and the initial stiffness of the base 20 is improved.

[0094] Continue to refer to Figure 4S4: Multiple pouring equipment are positioned at the same time, and concrete is poured into the flow channel from the pouring hole 212 to fill the flow channel in the main body part 21 and the pouring groove of the support part 22.

[0095] The concrete is pumped from the ground to the pouring hole 212 of the side wall of the first support part 211 by using multiple pouring equipment (such as a concrete pump truck), and the concrete flows upward through the flow channel and enters the overpass 2221 through the top outlet, and finally flows into the pouring groove. The concrete fills the flow channel of the first support part 211 and the pouring groove of the support part 22 (forms a ring beam structure) under the action of gravity and pump pressure, and realizes integrated continuous pouring. At this time, the reinforcing plate 214 in the flow channel and the air vent 216 ensure smooth flow of the concrete and smooth discharge of the gas, avoiding air blockage.

[0096] In a specific embodiment, before pumping the concrete, the flow channel is wetted with water vapor, which is beneficial to exhaust gas during pumping, and cooperates with the air vent 216 formed by the reinforcing plate 214 and the flow channel to realize dense pouring. When pumping the concrete, multiple pouring equipment can be positioned at the same time, or the concrete can be lifted synchronously and symmetrically at each first support end 2111, or the concrete can be lifted at equal intervals to ensure the consistency of the internal pouring of each first support part 211.

[0097] During pouring, key data such as pressure in the flow channel, internal deformation of the first support part 211, lifting height, etc. are detected to evaluate the structural strength of the base 20.

[0098] Reference Figure 5 S5: Pouring the concrete column foot 23. Formwork is set between the first support ends 2111 of adjacent first support parts 211, and the concrete column foot 23 is poured to rigidly connect the first support ends 2111 of the first support parts 211 as a whole. The concrete column foot 23 simultaneously wraps the reinforcing structures such as the dowels 2111a, the shear ring plate 2111b, and the reinforcing rib plate 2111c to form a closed ring foundation, thereby enhancing the overall stability. The concrete column foot 23 spreads the upper load to a larger range of foundation, thereby reducing the local compressive stress.

[0099] S6: Pouring the tower body 10 above the support part 22.

[0100] In a specific embodiment, the completed support part 22 is used as the starting platform of the slip form system, and the slip form process is used to continuously pour the tower body 10. The smooth and high-strength ring structure surface provided by the support part 22 ensures smooth operation and accurate trajectory of the slip form system. The tower body 10 and the base 20 are continuously formed in structure, and the force transmission path is clear.

[0101] The cooling tower 100 and the construction method thereof are characterized in that the main body part 21 is formed by splicing the first support part 211, the base 20 is formed by connecting the support part 22, the flow channel is arranged in the first support part 211, and the pouring hole 212 is formed, so that the continuous pouring mode of the concrete is realized, i.e., the concrete is continuously poured from the internal flow channel to the pouring groove. Compared with the mode of relying on the external scaffold for concrete conveying and formwork support in the traditional construction, the erection range and height of the high and complex scaffold are greatly reduced, so that the scaffold material consumption and labor input are significantly reduced. The large-scale support scaffold is not needed, the site construction organization is simplified, the material rental, transportation and labor costs are reduced, the construction site space is released, the cross operation of other procedures is facilitated, and the overall progress control ability of the power plant construction is improved.

[0102] It should be understood, however, that the application is not limited to the particular examples described herein, and as such may encompass a variety of implementations or adaptations of the present application. Furthermore, the above description should not be interpreted as a limitation on the present application but merely an illustration. Further, the DETAILED DESCRIPTION is in no way limiting, but rather a number of examples are set forth herein by way of example and not of limitation.

Claims

1. A cooling tower (100) characterized in that, The utility model relates to a tower body (10) and a base (20) supporting on the ground, the tower body (10) is arranged on the base (20), the base (20) comprises: a main body part (21) comprising a plurality of first support pieces (211), the plurality of first support pieces (211) are connected to form the main body part (21) around, and two adjacent first support pieces (211) are fixedly connected; a support part (22) arranged above the main body part (21), the upper side of the support part (22) defines a pouring groove; the first support piece (211) defines a flow channel in the first support piece (211), the first support piece (211) is provided with a pouring hole (212) in communication with the flow channel, and the flow channel is in communication with the pouring groove, and the flow channel and the pouring groove are both poured with concrete. The first support piece (211) has a first support end (2111) away from the tower body (10) and a second support end (2112) close to the tower body (10) in the height direction, and the first support end (2111) and the second support end (2112) are both provided with two in the circumferential direction of the base (20). The interval between the two first support ends (2111) is greater than the interval between the two second support ends (2112).

2. Cooling tower (100) according to claim 1, characterized in that The first support piece (211) is formed as an X-shaped pipe. The first support end (2111) of two adjacent first support pieces (211) is fixedly connected by a concrete column foot (23).

3. Cooling tower (100) according to claim 2, characterized in that The first support end (2111) is provided with a plurality of studs (2111a) arranged in the circumferential wall of the first support end (2111); and / or, 4. Cooling tower (100) according to claim 3, characterized in that The first support end (2111) is provided with a plurality of shear ring plates (2111b) arranged at intervals in the height direction; and / or, 5. Cooling tower (100) according to claim 4, characterized in that The first support end (2111) is provided with a plurality of reinforcing rib plates (2111c) arranged at intervals around the circumferential wall of the first support end (2111). The end face of the first support end (2111) away from the tower body (10) is provided with a bottom plate (213), and the bottom plate (213) is provided with a mounting hole (2131) penetrating in the height direction; The main body part (21) further comprises a ground anchor (24), one end of the ground anchor (24) away from the tower body (10) is inserted into the ground, and the ground anchor (24) is bent to form a hook part (241), one end of the ground anchor (24) close to the tower body (10) penetrates through the mounting hole (2131), and a limiting piece (25) abutting against the bottom plate (213) is fixedly connected with the one end of the ground anchor penetrating through the mounting hole (2131).

6. The cooling tower (100) according to claim 2, characterized in that The flow channel is provided with a reinforcing plate (214) at intervals in the height direction, the reinforcing plate (214) has a flow-through hole (215) penetrating in the height direction, and part of the edge of the reinforcing plate (214) is spaced apart from the inner wall of the flow channel to form an air vent (216). ​ 7. The cooling tower (100) according to claim 1, characterized in that ​ 8. Cooling tower (100) according to any one of claims 1-7, characterized in that The support part (22) comprises a plurality of first connecting pieces (222) and a plurality of second connecting pieces (223), the first connecting piece (222) defines a first slot section (2211) towards one end of the tower body (10), and the second connecting piece (223) defines a second slot section (2212) towards one end of the tower body (10); The first connecting piece (222) is fixedly connected with the top end of the first support piece (211), the top end of the first support piece (211) defines an outlet in communication with the flow channel, and the first connecting piece (222) is provided with a through opening (2221) corresponding to the outlet, and the through opening (2221) is in communication with the first slot section (2211); A plurality of first connecting pieces (222) and second connecting pieces (223) are arranged at intervals and connected end to end, and a plurality of first slot sections (2211) and second slot sections (2212) are in communication to form the pouring slot; and / or, In the construction of the cooling tower (100), the first connecting piece (222) and the first support piece (211) are an integral part.

9. Cooling tower (100) according to claim 8, characterized in that A plurality of first reinforcing steel bars (224) and a plurality of second reinforcing steel bars (225) are arranged in an array in the pouring slot, both ends of the first reinforcing steel bar (224) are fixedly connected with two side walls of the pouring slot, the second reinforcing steel bar (225) extends along the circumference of the tower body (10), and the second reinforcing steel bar (225) is fixedly connected with the first reinforcing steel bar (224); and / or, In the construction of the cooling tower (100), the first reinforcing steel bar (224) and the first connecting piece (222) / the second connecting piece (223) are an integral part.

10. A method of constructing a cooling tower (100) characterised in that, The application is applied to the cooling tower (100) in any one of claims 1-9, comprising: S1: a plurality of first support pieces (211) are respectively aligned with ground anchors (24) on the ground, and are preliminarily pre-tightened by limiting pieces (25) to form a main body part (21); S2: hoist the second connecting piece (223) above the main body part (21), and sequentially weld the first connecting piece (222) and the second connecting piece (223) to form a support part (22); S3: tighten the limiting piece (25); S4: a plurality of pouring equipment are simultaneously positioned, and concrete is poured into the flow channel from the pouring hole (212) into the flow channel to fill the flow channel in the main body part (21) and the pouring slot of the support part (22); S5: pour a concrete column foot (23); S6: pour a tower body (10) above the support part (22).

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