CN209941684U - Self-gravity cooling water circulation system for large-volume bearing platform - Google Patents
Self-gravity cooling water circulation system for large-volume bearing platform Download PDFInfo
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- CN209941684U CN209941684U CN201920525402.1U CN201920525402U CN209941684U CN 209941684 U CN209941684 U CN 209941684U CN 201920525402 U CN201920525402 U CN 201920525402U CN 209941684 U CN209941684 U CN 209941684U
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Abstract
The utility model relates to a self-gravity cooling water circulation system of a large-volume bearing platform, which comprises a plurality of cooling water pipes arranged in concrete of the bearing platform, a water tank with a water outlet higher than the top surface of the bearing platform, and a first water pump for supplying water to the water tank, wherein the first water pump pumps external water source to supply water to the water tank; and a water separator is arranged at the water outlet of the water tank, the water inlet of each cooling water pipe is connected with the water separator through a water valve, the water outlet of each cooling water pipe is arranged on the concrete top surface of the bearing platform, and circulating water which flows out of the water outlet of each cooling water pipe and is collected on the top surface of the bearing platform is pumped by a second water pump to supply water to the water tank. The utility model discloses a large capacity water tank supplies water to condenser tube, can avoid the water pump trouble to stop supplying water and lead to the harm that the rapid rising of cushion cap concrete core table difference in temperature caused.
Description
Technical Field
The utility model relates to a bridge cushion cap cooling water circulation system, concretely relates to utilize flood peak difference between cooling water holding tank and cushion cap condenser tube, the cooling water is impressed cushion cap condenser tube entry under from the action of gravity and then is taken away the hydrologic cycle ring system of concrete hydration heat from the export outflow.
Background
When the large-volume bearing platform is cast, a cooling water circulation system is required to be arranged to take out the hydration heat of the concrete at the center of the bearing platform so as to reduce the temperature difference of the inner surface of the bearing platform and prevent the bearing platform from cracking. In order to remove enough heat, the flow rate of the platform cooling water must reach a certain rate. Under the general condition, a water pump and a valve are installed on a water inlet pipe of a bearing platform, cooling water is directly pumped into the bearing platform, and the water flow is adjusted through the valve according to the internal temperature of the bearing platform in the cooling process. However, the cooling water circulation system needs long continuous working time, generally more than 10 days, the requirement on the continuous working performance of the water pump is high, the pumping resistance of the water pump is increased when the flow rate of the water pump is reduced by adjusting the valve, and the probability of the water pump motor failing is increased. Once the water pump is out of order and the water is stopped, the temperature difference on the surface of the concrete core is extremely high, the bearing platform is cracked when the temperature shearing stress exceeds the bearing limit of the concrete of the bearing platform, and the consequence is very serious.
Disclosure of Invention
The utility model aims to provide a not directly use the water pump sending to the not enough of the direct pump sending cooling water method existence of current water pump, but utilize the cooling water circulation loop system that gets into cushion cap condenser tube and take away core concrete hydration heat at the flood peak pressure injection cooling water of the large-scale storage water tank of eminence, cooling water circulation system stop work causes harm to the cushion cap when avoiding the water pump to break down.
In order to achieve the above object, the utility model provides a bulky cushion cap is from gravity cooling water circulation system, including setting up many condenser tubes in cushion cap concrete, its characterized in that: the water tank with the water outlet higher than the top surface of the bearing platform and the first water pump for supplying water to the water tank are further included, and the first water pump pumps an external water source to supply water to the water tank; the water tank water outlet is provided with a water separator, the water inlet of each cooling water pipe is connected with the water separator through a water valve, and the water outlet of each cooling water pipe is arranged on the concrete top surface of the bearing platform.
Furthermore, the large-volume bearing platform self-gravity cooling water circulation system is also provided with a second water pump, and the second water pump pumps the circulating water which flows out of the water outlet of the cooling water pipe and is collected on the top surface of the bearing platform to supply water to the water tank.
The utility model discloses rely on the self-gravity of water tank water-logging to impress cushion cap condenser tube entry and then flow from the export and take away concrete hydration heat, whole system simple structure, water supply continuously stable, factor of safety is big, velocity of flow regulation is convenient, the large-scale cushion cap concrete cooling of being convenient for. The water tank is required to have enough height and volume when in use, the height of the water tank can provide enough pressure to enable the flow rate of cooling water to meet the requirement, and the volume of the water tank can still continuously supply water for more than 1 hour when the water pump breaks down and stops pumping water after the water tank is filled with water.
In one embodiment of the present invention, 3000m of the main pier can be satisfied3Continuous water supply and regulation for 36 cooling water pipes for 14 days after the pouring of the large-volume bearing platform concrete. Compared with the method of directly pumping pressurized water for cooling water circulation, the method has the advantages of less equipment and material investment, low water pump failure rate, continuous and stable water supply, convenient adjustment and obvious advantages.
Drawings
FIG. 1 is a system architecture elevation of the present invention;
fig. 2 is a top view of the system structure of the present invention.
Detailed Description
As shown in fig. 1 and 2, the utility model provides a large-volume bearing platform self-gravity cooling water circulation system, which comprises a plurality of cooling water pipes 2 arranged in concrete of a bearing platform 1, a water tank 3 with a water outlet higher than the top surface of the bearing platform 1, and a first water pump 4 for supplying water to the water tank, wherein the first water pump 4 pumps external water source to supply water to the water tank; the water tank water outlet is equipped with water knockout drum 5, the water inlet of every condenser tube 2 pass through the water valve with water knockout drum 5 is connected, and the delivery port setting of every condenser tube 2 is on cushion cap 1 concrete top surface. The central arrows in fig. 1 and 2 indicate the water flow direction.
Because will set up construction platform during the cushion cap construction, and construction platform's height will be higher than the height of cushion cap top surface, consequently the utility model discloses during the specific implementation, can set up direct water tank 3 at the top of cushion cap construction platform 6.
The concrete cooling water pipes of the bearing platform are generally arranged in the transverse bridge direction and the longitudinal bridge direction respectively. The utility model arranges the water tanks into two groups, each group has at least 2 water tanks, and the water tanks of each group are communicated with each other through water pipes; the two groups of water tanks are respectively connected with cooling water pipes arranged in the transverse bridge direction and the longitudinal bridge direction.
The utility model discloses it encloses the fender to be provided with the manger plate at cushion cap top surface periphery, collects the water that the cooling water pump delivery port flows, carries out the maintenance to cushion cap top surface concrete. In specific implementation, the water depth of the top surface of the bearing platform is ensured to be at least 20 cm. Simultaneously, because the temperature of cushion cap top surface is higher, the utility model discloses still be equipped with second water pump 7, supply water in to the water tank through the circulating water of second water pump 7 extraction cushion cap top surface, can adjust the temperature in the water tank.
For avoiding the water pump trouble to cause the intraductal water supply that stops of cooling water, the utility model discloses enough big with the volume setting of water tank, the water valve that can satisfy all condenser tubes after the storage is full of water opens 1 hour total flow with maximum flow, is convenient for salvage at the water pump and still can stably supply water to condenser tube during the change.
When the utility model is used for cooling the concrete of the bearing platform, the external water source is pumped by the first water pump to supply water to the water tank, and simultaneously the water valves of the cooling water pipes are opened to cool the interior of the concrete of the bearing platform; the external water source can directly extract river/lake water in the construction area.
Monitoring the temperature of the core part and the external concrete of the bearing platform in real time during cooling, and controlling the flow rate of cooling water by adjusting a switch of the water separator according to the monitored temperature; and according to the temperature monitoring data, stopping supplying water to the cooling water pipe when the temperature of the bearing platform core part and the external concrete meets the condition of stopping cooling water circulation.
When cooling the concrete inside the bearing platform, the water temperature for supplying water to the cooling water pipe has certain requirements, and if the temperature of an external water source is too low, the concrete inside the bearing platform shrinks rapidly, and the quality of the bearing platform is also adversely affected. The utility model collects the water flowing out from the water outlet of the cooling water pipe on the top surface of the bearing platform, and on one hand, the concrete on the top surface of the bearing platform can be maintained; meanwhile, as the water temperature on the top surface of the bearing platform is higher, the circulating water on the top surface of the bearing platform can be pumped by the second water pump to supply water to the water tank so as to adjust the water temperature in the water tank.
When water is supplied into the water tank, the water temperature in the water tank is monitored in real time, and when the water temperature is lower than a set requirement, the water supply amount of the first water pump to the water tank can be increased and the water supply of the second water pump is correspondingly reduced; and when the water temperature is higher than the set requirement, increasing the water supply amount of the second water pump and correspondingly reducing the water supply amount of the first water pump.
Claims (5)
1. The utility model provides a bulky cushion cap is from gravity cooling water circulation system, is including setting up many condenser tubes in cushion cap concrete, its characterized in that: the water tank with the water outlet higher than the top surface of the bearing platform and the first water pump for supplying water to the water tank are further included, and the first water pump pumps an external water source to supply water to the water tank; the water tank water outlet is provided with a water separator, the water inlet of each cooling water pipe is connected with the water separator through a water valve, and the water outlet of each cooling water pipe is arranged on the concrete top surface of the bearing platform.
2. The high volume platform self-gravity cooling water circulation system of claim 1, wherein: the water tank is arranged at the top of the bearing platform construction platform.
3. The high volume platform self-gravity cooling water circulation system of claim 1, wherein: a plurality of cooling water pipes are respectively arranged in the transverse bridge direction and the longitudinal bridge direction; the water tanks are divided into two groups, each group has at least 2, and the water tanks of each group are communicated through water pipes; the two groups of water tanks are respectively connected with cooling water pipes arranged in the transverse bridge direction and the longitudinal bridge direction.
4. The high volume platform self-gravity cooling water circulation system of claim 1, wherein: and the second water pump is used for pumping circulating water which flows out of a water outlet of the cooling water pipe and is collected on the top surface of the bearing platform to supply water to the water tank.
5. The high volume platform self-gravity cooling water circulation system of claim 1, wherein: the volume of the water tank is larger than the total flow of all the water valves of the cooling water pipes, which are opened for 1 hour at the maximum flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920525402.1U CN209941684U (en) | 2019-04-17 | 2019-04-17 | Self-gravity cooling water circulation system for large-volume bearing platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920525402.1U CN209941684U (en) | 2019-04-17 | 2019-04-17 | Self-gravity cooling water circulation system for large-volume bearing platform |
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| CN209941684U true CN209941684U (en) | 2020-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914417A (en) * | 2019-04-17 | 2019-06-21 | 中交路桥建设有限公司 | A kind of cushion cap is from gravity cooling water recirculation system and method |
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2019
- 2019-04-17 CN CN201920525402.1U patent/CN209941684U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914417A (en) * | 2019-04-17 | 2019-06-21 | 中交路桥建设有限公司 | A kind of cushion cap is from gravity cooling water recirculation system and method |
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