CN216196782U - Single-layer multi-loop water cooling system for super-thick large-volume concrete - Google Patents
Single-layer multi-loop water cooling system for super-thick large-volume concrete Download PDFInfo
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- CN216196782U CN216196782U CN202122553157.5U CN202122553157U CN216196782U CN 216196782 U CN216196782 U CN 216196782U CN 202122553157 U CN202122553157 U CN 202122553157U CN 216196782 U CN216196782 U CN 216196782U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 239000004567 concrete Substances 0.000 title claims abstract description 78
- 238000001816 cooling Methods 0.000 title claims abstract description 42
- 239000002356 single layer Substances 0.000 title claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims abstract description 61
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 7
- 239000008397 galvanized steel Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000009435 building construction Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000003471 anti-radiation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a single-layer multi-loop water cooling system for super-thick large-volume concrete, belonging to the technical field of medical building construction; specifically, two cooling water circulating pipes are arranged in a single-layer serpentine shape on the same plane inside a concrete wall body or a beam body or a top plate, water inlets of the two cooling water circulating pipes are connected with a water supply tank, and water outlets of the two cooling water circulating pipes are respectively connected with a water outlet tank; a temperature sensor is arranged in the concrete wall body or the beam body or the top plate, and a water pump is arranged at the water inlet; a heating device is arranged in the water supply tank; the water inlet flow and the water temperature are adjusted by the linkage of the heating rod, the temperature sensor and the submersible pump, so that the difference between the water inlet temperature and the highest temperature of the concrete is controlled; effectively ensures that the concrete does not generate cracks, and is applied to cooling of large-volume concrete with super-thick structure and the like.
Description
Technical Field
The utility model belongs to the technical field of medical building construction, and relates to a single-layer multi-loop water cooling system for super-thick large-volume concrete.
Background
The room foundation, the wall column and the beam slab of the medical linear accelerator are all large-volume concrete, the wall body and the slab at the thickest part are 3000mm, the linear accelerator is the most important in hospitals, and any gap generated in the concrete can cause radiation leakage in the later use and is wasted. When the medical linear accelerator room is subjected to concrete pouring, cracks are easily caused due to the internal and external temperature difference and the temperature change of the large-volume concrete; the construction quality and the safety performance of the medical linear accelerator room are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art, provides a single-layer multi-loop water cooling system for super-thick large-volume concrete, and solves the problem of cracks caused by the temperature difference and the temperature change inside and outside the large-volume concrete.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The super-thick large-volume concrete single-layer multi-loop water cooling system comprises a water supply tank, a first water outlet tank, a second water outlet tank, a first cooling water circulating pipe and a second cooling water circulating pipe, wherein the water supply tank is connected with the first water outlet tank through the first cooling water circulating pipe; the water supply tank is connected with a second water outlet tank through a second cooling water circulating pipe; the first cooling water circulating pipe and the second cooling water circulating pipe are arranged inside the concrete wall body or the beam body or the top plate in a single-layer serpentine shape on the same plane; the water inlets of the first cooling water circulating pipe and the second cooling water circulating pipe are both positioned in the middle of the concrete wall body or the beam body or the top plate; the water outlets of the first cooling water circulating pipe and the second cooling water circulating pipe are respectively positioned at two ends of a concrete wall body or a beam body or a top plate.
A temperature sensor is arranged in the concrete wall body or the beam body or the top plate, and a water pump is arranged at the water inlet; a heating device is arranged in the water supply tank; the temperature sensor is electrically connected with the controller, and the control valve and the heating device of the water pump are respectively electrically connected with the controller; the temperature sensor monitors the temperature inside the poured concrete wall or beam or top plate, the temperature signal is transmitted to the controller, and the controller controls the water supply of the water pump and the heating of the water body in the water supply tank.
Preferably, the first cooling water circulating pipe and the second cooling water circulating pipe are made of DN25 hot-dip galvanized steel pipes.
Preferably, the first cooling water circulation pipe and the second cooling water circulation pipe are respectively fixed on the reinforcing steel bar reinforcing rib or the stirrup.
A single-layer multi-loop water cooling method for super-thick large-volume concrete comprises the following steps:
1) and after the binding of the steel bars of the concrete wall body or the beam body or the top plate is finished and before the installation of the template, fixing the first cooling water circulation pipe and the second cooling water circulation pipe between the steel bar meshes.
2) And arranging the temperature sensor between the steel bar meshes, filling cooling water into the first cooling water circulating pipe and the second cooling water circulating pipe, and then pouring concrete.
3) After concrete is poured, the water inflow rate and the water temperature are adjusted in a linkage manner through a heating device, a temperature sensor and a water pump, and the difference between the water inflow temperature and the highest temperature of the concrete is controlled to be 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is controlled to be 3-6 ℃; the cooling rate is less than or equal to 2 ℃/d.
4) And after the concrete curing period is finished, discharging water in the first cooling water circulating pipe and the second cooling water circulating pipe, and performing grouting, filling and plugging.
Furthermore, the cooling rate is less than or equal to 2 ℃/d, and the cooling rate is less than or equal to 1 ℃/4 h.
Further, when the difference between the highest temperature of the concrete and the surface temperature is less than or equal to 15 ℃, the water pump is closed to stop the water cooling system; and when the difference between the maximum temperature of the concrete and the surface temperature is more than 25 ℃, starting a water pump to start a water cooling system.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts the ultra-thick large-volume concrete single-layer multi-loop water cooling system, effectively controls the cracks caused by the internal and external temperature difference and the temperature change of the concrete, ensures that the concrete does not generate cracks, has reliable safety quality, convenient operation, in-place control, high concrete construction quality, no cracks, good impression quality and forming effect which meets the design requirements, and achieves the structural integrity of a linear accelerator room without gaps and defects.
The cooling system of the utility model has simple construction, convenient assembly and disassembly and controllable cooling: the water inflow rate and the water temperature are adjusted by the linkage of the heating rod, the temperature sensor and the submersible pump, so that the difference between the water inflow temperature and the highest temperature of concrete is controlled, and the temperature difference is preferably 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is preferably 3-6 ℃; the cooling rate is not more than 2 ℃/d and not more than 1 ℃/4h, and when the difference between the maximum temperature of the concrete and the surface temperature is not more than 15 ℃, the water cooling operation can be suspended; when the difference between the maximum temperature of the concrete and the surface temperature is more than 25 ℃, the water cooling system is restarted, so that the generation of concrete cracks is effectively avoided. The problem of medical linear accelerator anti-radiation leakage is solved, so that the whole body of ultra-thick concrete of a room foundation, a wall body and a top plate of the linear accelerator is seamless, and the impression effect is good after the mould is removed.
The utility model can be widely used for cooling large-volume concrete such as super-thick foundations, super-thick walls, super-thick beam plates and the like in hot, severe cold, cold in winter and hot in summer, warm in winter and hot in summer and the like areas, and concrete members of cast-in-place structures with strict requirements on concrete construction temperature control or requirements on shielding protection and the like. But also can be widely applied to the cooling work of large-volume concrete construction such as bridge piers and the like of municipal administration specialty.
Drawings
FIG. 1 is a plan view of the wall cooling water pipe of the linear accelerator room according to the embodiment.
Fig. 2 is a vertical arrangement view of the cooling water pipe of the room wall of the linear accelerator.
Fig. 3 is a plan view of the cooling water pipe on the top plate of the linear accelerator room.
In the figure, 1 is a water supply tank, 2 is a first water outlet tank, 3 is a second water outlet tank, 4 is a first cooling water circulation pipe, 5 is a second cooling water circulation pipe, 6 is a water inlet, and 7 is a water outlet.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
The concrete strength grades of the room foundation, the wall column and the beam slab of the linear accelerator of the outpatient and medical building are all C35, the impermeability grade is P6, the wall thickness is respectively 1300mm, 1500mm, 1800mm and 3000mm thick, the top plate thickness is 1700mm and 3000mm thick, and the concrete is large-volume concrete. The super-thick large-volume concrete single-layer multi-loop water cooling system technology is a layout diagram of the super-thick large-volume concrete single-layer multi-loop water cooling system as shown in figures 1-3, and is applied to a medical linear accelerator room. The device comprises a water supply tank 1, a first water outlet tank 2, a second water outlet tank 3, a first cooling water circulating pipe 4 and a second cooling water circulating pipe 5, wherein the water supply tank 1 is connected with the first water outlet tank 2 through the first cooling water circulating pipe 4; the water supply tank 1 is connected with a second water outlet tank 3 through a second cooling water circulating pipe 5; the first cooling water circulating pipe 4 and the second cooling water circulating pipe 5 are distributed inside the concrete wall body, the beam body and the top plate in a single-layer serpentine shape on the same plane; the water inlets 6 of the first cooling water circulating pipe 4 and the second cooling water circulating pipe 5 are positioned in the middle of the concrete wall body, the beam body and the top plate; the water outlets 7 of the first cooling water circulating pipe 4 and the second cooling water circulating pipe 5 are respectively positioned at two ends of a concrete wall body, a beam body and a top plate.
Temperature sensors are arranged in the concrete wall, the beam body and the top plate, and a water pump is arranged at the water inlet 6; a heating rod is arranged in the water supply tank 1; the temperature sensor is electrically connected with the PLC, and the control valve and the heating rod of the water pump are respectively electrically connected with the PLC; the temperature sensor monitors the temperature inside the poured concrete wall or beam or top plate, the temperature signal is transmitted to the controller, and the controller controls the water supply of the water pump and the heating of the water body in the water supply tank. The control process is prior art in the field.
Specific to the different structures:
(1) wall body individual layer multiloop water cooling system: as shown in fig. 1 and 2, after the binding of the wall body steel bars of the linear accelerator machine room is completed, a set of cooling water circulation cooling pipe network is installed between wall body steel bar net pieces before the installation of a template, DN25 hot-dip galvanized steel pipes (the outer diameter is 33.5mm, the wall thickness is 3.25 mm) are adopted, the connection mode is threaded connection, and DN25 hot-dip galvanized steel pipes are reliably fixed on the wall body steel bar net piece attaching ribs by binding wires.
(2) 3000mm thick beam (board) individual layer multiloop water cooling system: after the third row of steel bars of the beam steel bars are bound, a set of cooling water circulation pipe network is horizontally installed in the beam, DN25 hot galvanized steel pipes (the outer diameter is 33.5mm, the wall thickness is 3.25 mm) are adopted, the connection mode is threaded connection, and DN25 hot galvanized steel pipes are reliably fixed on steel bar stirrups by binding wires.
(3) 1700mm thick plate single-layer multi-loop water cooling system: as shown in fig. 3, after the fourth layer of steel mesh sheets of the top plate are bound, a set of cooling water circulation pipe network is horizontally installed in the top plate, DN25 steel pipes (the outer diameter is 33.5mm, the wall thickness is 3.25 mm) are adopted, the connection mode is threaded connection, and DN25 hot galvanized steel pipes are reliably fixed on steel bar stirrups by binding wires.
The layout and operation requirements of the single-layer multi-loop water cooling system are as follows:
(1) the water inlet flow and the water temperature are adjusted by the linkage of the heating rod, the temperature sensor and the water pump, and all the loops are connected in parallel and connected with a main pipeline in the water tank.
(2) The cooling water pipeline is arranged according to a scheme design strictly and is firmly fixed; before the cooling water pipe is used, a hydraulic test is carried out, and the water cannot leak and be blocked by the pipe.
(3) Before concrete is poured, the cooling water pipe is filled with cooling water in advance.
(4) After the initial setting of the concrete, the water cooling system should be started in time.
(5) Controlling the difference between the water inlet temperature and the highest concrete temperature by adjusting the water inlet flow and the water temperature, wherein the temperature difference is preferably 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is preferably 3-6 ℃; the cooling rate is not more than 2 ℃/d and not more than 1 ℃/4 h.
(6) In the water cooling process, the heat preservation and moisture preservation maintenance of the reinforced concrete is required.
(7) When the difference between the maximum temperature of the concrete and the surface temperature is not more than 15 ℃, the water cooling operation can be suspended; and when the difference between the maximum temperature of the concrete and the surface temperature is more than 25 ℃, restarting the water cooling system.
(8) After the concrete curing period, the cooling water circulation pipe network timely discharges water in the pipe network, and the water circulation pipe network is used for 1: and (3) carrying out grouting, filling and plugging on the high-grade expanded cement mortar of 0.5.
This engineering adopts the single-deck multiloop water cooling system technique, and single-deck multiloop water cooling system connects in parallel between each return circuit and links to each other with the trunk line, sets up water supply tank and is connected with on-the-spot water supply pipe network, installs water supply equipment such as water supply pipe network and lift 25m water pump, sets up out the water tank outward, stops water cooling system according to the difference between concrete highest temperature and surface layer temperature. The crack caused by the internal and external temperature difference and the temperature change of the concrete is controlled, the internal and external temperature difference of the concrete is controlled within 25 ℃, the temperature of the concrete is slowly reduced, the temperature is reduced by about 2 ℃ every day on average, the concrete is ensured not to generate the crack, and the whole seamless room of the linear accelerator is achieved. The appearance of the formed concrete is beautiful, the standard of the fair-faced concrete is achieved, meanwhile, the quality of the concrete also meets the design requirements of engineering through actual measurement and inspection, and a satisfactory effect is achieved.
The super-thick large-volume concrete single-layer multi-loop water cooling system construction technology effectively avoids cracks caused by the internal and external temperature difference and the temperature change of large-volume concrete, improves the integral forming quality, accumulates a large number of construction parameters, and provides technical support for similar projects. The single-layer multi-loop water cooling system for the ultra-thick large-volume concrete replaces one steel bar in the structure, water in the water cooling system is recycled, water is saved, the impression effect is good after the concrete is demolded, the energy consumption of secondary construction on site is reduced, resources are saved, and the environment is protected.
While the utility model has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (3)
1. The single-layer multi-loop water cooling system for the super-thick large-volume concrete is characterized by comprising a water supply tank, a first water outlet tank, a second water outlet tank, a first cooling water circulating pipe and a second cooling water circulating pipe, wherein the water supply tank is connected with the first water outlet tank through the first cooling water circulating pipe; the water supply tank is connected with a second water outlet tank through a second cooling water circulating pipe; the first cooling water circulating pipe and the second cooling water circulating pipe are arranged inside the concrete wall body or the beam body or the top plate in a single-layer serpentine shape on the same plane; the water inlets of the first cooling water circulating pipe and the second cooling water circulating pipe are both positioned in the middle of the concrete wall body or the beam body or the top plate; the water outlets of the first cooling water circulating pipe and the second cooling water circulating pipe are respectively positioned at two ends of a concrete wall body or a beam body or a top plate;
a temperature sensor is arranged in the concrete wall body or the beam body or the top plate, and a water pump is arranged at the water inlet; a heating device is arranged in the water supply tank; the temperature sensor is electrically connected with the controller, and the control valve and the heating device of the water pump are respectively electrically connected with the controller; the temperature sensor monitors the temperature inside the poured concrete wall or beam or top plate, the temperature signal is transmitted to the controller, and the controller controls the water supply of the water pump and the heating of the water body in the water supply tank.
2. The single-layer multi-loop water cooling system for the ultra-thick large-volume concrete according to claim 1, wherein the first cooling water circulating pipe and the second cooling water circulating pipe are made of DN25 hot galvanized steel pipes.
3. The single-layer multi-loop water cooling system for super-thick large-volume concrete according to claim 1, wherein the first cooling water circulating pipe and the second cooling water circulating pipe are respectively fixed on a reinforcing bar attaching rib or a stirrup.
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| CN202122553157.5U CN216196782U (en) | 2021-10-22 | 2021-10-22 | Single-layer multi-loop water cooling system for super-thick large-volume concrete |
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| CN202122553157.5U CN216196782U (en) | 2021-10-22 | 2021-10-22 | Single-layer multi-loop water cooling system for super-thick large-volume concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262974A (en) * | 2022-08-04 | 2022-11-01 | 深圳市市政工程总公司 | Intelligent control construction method for large-volume concrete cracks |
| CN115596226A (en) * | 2022-09-28 | 2023-01-13 | 中冶天工集团有限公司（Cn） | A cooling device and layout method in a radiation-proof concrete wall |
| CN116024978A (en) * | 2022-12-23 | 2023-04-28 | 中铁建工集团有限公司 | A large-volume concrete automatic temperature measurement and control construction system and device |
-
2021
- 2021-10-22 CN CN202122553157.5U patent/CN216196782U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262974A (en) * | 2022-08-04 | 2022-11-01 | 深圳市市政工程总公司 | Intelligent control construction method for large-volume concrete cracks |
| CN115262974B (en) * | 2022-08-04 | 2023-08-18 | 深圳市市政工程总公司 | Intelligent control construction method for large-volume concrete cracks |
| CN115596226A (en) * | 2022-09-28 | 2023-01-13 | 中冶天工集团有限公司（Cn） | A cooling device and layout method in a radiation-proof concrete wall |
| CN116024978A (en) * | 2022-12-23 | 2023-04-28 | 中铁建工集团有限公司 | A large-volume concrete automatic temperature measurement and control construction system and device |
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