Temperature control devices and their application methods for large-volume concrete in coastal areas

Abstract

This application relates to a temperature control device for large-volume concrete in coastal areas and its usage method. This application is applicable to the field of concrete temperature control technology. The technical solution adopted in this application is: a temperature control device for large-volume concrete in coastal areas, comprising: a cold source component for extracting and storing seawater; a cooling component connected to the outlet end of the cold source component and disposed within the concrete, the cooling component having an annular cavity capable of storing seawater, the annular cavity being waterproof, breathable, and isolated to form a hollow steam channel; a condensing component connected to the end of the cooling component away from the cold source component, the condensing component being used to condense water vapor in the steam channel into fresh water for collection; a vacuuming component connected to the condensing component, the vacuuming component being used to maintain a vacuum state inside the steam channel; and a control component, communicatively connected to the cold source component, cooling component, condensing component, and vacuuming component, the control component being used to control the opening and closing states of each component.

Description

Technical Field

[0001] This invention relates to the field of concrete temperature control technology, and in particular to a temperature control device for large-volume concrete in coastal areas and its usage method. Background Technology

[0002] As a large-volume concrete structure, concrete gravity dams suffer from uneven spatial and temporal temperature distribution due to the heat of hydration, resulting in inconsistent deformation. Furthermore, constrained by the foundation, they are prone to generating self-constraint stress and foundation constraint stress. If the stress exceeds the crack resistance of the concrete, cracks may form in the dam body. Therefore, extra attention must be paid to temperature control and crack prevention during concrete dam construction, and cooling water pipe systems are commonly used in engineering to lower the temperature.

[0003] Given the high standards required for constructing large-volume concrete gravity dams in coastal areas, current temperature control solutions for cold water pipes face limitations in this application. Freshwater resources are precious in coastal regions, while cold water pipe systems require large amounts of water for cooling. Therefore, using seawater as a cooling medium is a feasible solution. If the heat of hydration can be effectively utilized to extract freshwater, the effectiveness of the cold water pipe system can be further improved, resulting in significant economic benefits. However, seawater is corrosive and crystallizes upon evaporation, easily clogging and corroding pipes over time, making its application difficult. Therefore, a technology is needed to solve these problems and meet the high requirements for crack control in large-volume concrete gravity dams in coastal areas. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a temperature control device for large-volume concrete in coastal areas and its usage method, in view of the above-mentioned problems.

[0005] The technical solution adopted in this invention is: a temperature control device for large-volume concrete in coastal areas, comprising:

[0006] Cold source components are used to extract and store seawater;

[0007] The cooling component is connected to the water outlet of the cold source component and is located inside the concrete. The cooling component has an annular cavity that can store seawater. The annular cavity is waterproof, breathable and isolated to form a hollow steam channel, so that the seawater in the annular cavity absorbs the heat of hydration of the concrete to form water vapor and enters the steam channel.

[0008] A condensing component is connected to the end of the cooling component away from the cold source component. The condensing component is used to condense water vapor in the steam channel to form fresh water and collect it.

[0009] A vacuum assembly is connected to the condensation assembly. The vacuum assembly is used to maintain a vacuum inside the steam channel in order to lower the boiling point of the seawater in the annular cavity.

[0010] The control component is communicatively connected to the cold source component, the cooling component, the condensing component, and the vacuuming component, and is used to control the opening and closing status of each component.

[0011] By using the above-mentioned technical means, the vacuuming component is used to create a vacuum in the steam channel, which lowers the boiling point of the seawater in the annular cavity under vacuum. Therefore, the seawater in the annular cavity is more likely to form water vapor under the action of external concrete hydration heat and enter the steam channel. The water vapor in the steam channel is condensed into fresh water by the condensing component and collected. Thus, this device uses seawater instead of fresh water as a cold source carrier and adopts the form of intensified evaporation to achieve heat dissipation of the concrete.

[0012] In some embodiments, the cooling component includes a cold water pipe, a grid, and a waterproof and breathable membrane. The two ends of the cold water pipe are respectively connected to the cold source component and the condensation component. The interior of the cold water pipe is provided with an annular grid, and the interior of the grid forms an annular cavity that can communicate with the cold source component. The center of the grid is covered with a waterproof and breathable membrane, and the interior of the waterproof and breathable membrane forms a tubular steam channel.

[0013] In some embodiments, the condensation assembly includes a steam pipe, a steam cooling chamber, a water level sensor, a refrigeration pipe, a refrigerator, a vacuum gauge, and an explosion-proof safety valve. The water level sensor and the refrigerator are connected to the control assembly via wires. The steam cooling chamber is connected to a steam channel via a steam pipe. A refrigeration pipe is installed inside the steam cooling chamber, and the end of the refrigeration pipe is connected to the output end of the refrigerator. A water level sensor for detecting the internal freshwater level is installed inside the steam cooling chamber. A vacuum gauge and an explosion-proof safety valve are installed on the top of the steam cooling chamber.

[0014] In some embodiments, the vacuum assembly includes a vacuum pump, a vacuum tube, and an electromagnetic vacuum pressure valve. The vacuum pump and the electromagnetic vacuum pressure valve are both connected to the control assembly via wires. The output end of the vacuum pump is connected to the condensation assembly via the vacuum tube, and the electromagnetic vacuum pressure valve is installed on the vacuum tube.

[0015] In some embodiments, the temperature control device further includes an air-cooling component, which includes a blower, a first valve, and a second valve. The outlet end of the cooling component is connected to a blower that can communicate with the steam passage. A first valve is installed between the outlet end of the cooling component and the blower. The inlet end of the cooling component is connected to an exhaust pipe that can communicate with the steam passage. A second valve is installed on the exhaust pipe.

[0016] In some embodiments, the control component includes a controller, a first electromagnetic water valve, a second electromagnetic water valve, and a third electromagnetic water valve. The first, second, and third electromagnetic water valves are all connected to the controller. The cold source component is equipped with a first electromagnetic water valve, which is used to control the cold source component to extract seawater. The condensation component is equipped with a second electromagnetic water valve, which is used to control the condensation component to discharge condensed fresh water. The connection between the cold source component and the cooling component is equipped with a third electromagnetic water valve, which is used to control the cold source component to replenish water into the annular cavity of the cooling component.

[0017] In some embodiments, the control component includes a fourth electromagnetic water valve connected to the controller. The outlet end of the cooling component is provided with a circulating water pipe, one end of which is connected to the annular cavity, and the other end of which is connected to the cold source component. The circulating water pipe is equipped with the fourth electromagnetic water valve. The temperature control device also includes a detection component located inside the cooling component. The detection component includes a water pressure sensor, a temperature sensor, and a salt concentration sensor. The detection component is used to detect the water pressure, temperature, and salt concentration information of the seawater in the annular cavity. If the water pressure, temperature, and salt concentration information do not meet the preset values ​​inside the controller, the controller opens the fourth electromagnetic water valve to circulate seawater in the annular cavity to achieve concrete cooling.

[0018] In some embodiments, the cold source component includes a water pump, a water delivery pipe, a water storage tower, and a tower. The water pump is connected to the control component via a wire. The water storage tower is installed on the tower. One end of the water pump draws seawater through the water delivery pipe, and the other end of the water pump is connected to the water storage tower through the water delivery pipe. The bottom of the side wall of the water storage tower is connected to the inlet end of the cooling component through the water delivery pipe.

[0019] In some embodiments, the water storage tower has a double-layer structure with a vacuum inside the interlayer. The surface of the tower cover is covered with multiple layers of insulation cotton. A third valve is installed below the water storage tower. Temperature sensors and water level sensors are installed inside the water storage tower. Based on the temperature and water level information of the seawater inside the water storage tower detected by the temperature and water level sensors, the water pump is controlled to replenish water into the water storage tower to regulate the water supply, so that the water storage tower can provide seawater at a stable temperature.

[0020] Another technical solution adopted in this invention is: a method for using a temperature control device for large-volume concrete in coastal areas, applicable to temperature control devices for large-volume concrete in coastal areas, comprising the following steps:

[0021] S1. Install the water pressure sensor, temperature sensor and salt concentration sensor into the grid gap of the cold water pipe in the cooling assembly;

[0022] S2. Arrange cold water pipe supports in the large-volume concrete pouring area and fix the cold water pipes on the supports in an arc shape.

[0023] S3. Connect the cold source component, cooling component, condensation component, vacuuming component and control component, and test the sealing performance of the device;

[0024] S4. First, pour concrete, then open the first electromagnetic water valve and water pump through the controller in the control component, and pump the cooled seawater into the water storage tower through the delivery water pipe until the set water level is reached, then close the first electromagnetic water valve and water pump.

[0025] S5. Start vacuuming, open the third solenoid water valve, the vacuum pump in the vacuuming assembly, and the refrigerator in the condensing assembly, and close the fourth solenoid water valve, the first valve, and the second valve.

[0026] S6. After a certain period of time following step S5, if the sensor indicates that the seawater temperature or salt concentration in the cold water pipe is too high or the water pressure is too low, turn off the vacuum pump, open the fourth solenoid water valve, circulate the seawater in the cold water pipe, and turn on the water pump and the first solenoid water valve until the salt concentration and water temperature in the cold water pipe are reduced and the water pressure is increased. Then, turn on the vacuum pump again and turn off the fourth solenoid water valve, the water pump, and the first solenoid water valve.

[0027] S7. If the sensor in the water storage tower shows that the seawater temperature is higher than the preset temperature threshold or the water level is lower than the preset water level threshold, close the third electromagnetic water valve, manually open the third valve to drain the high-temperature seawater in the water storage tower, then close the third valve, turn on the water pump and the third electromagnetic water valve, and inject low-temperature seawater.

[0028] S8. When encountering a broken cold water pipe or other situations that prevent vacuuming, turn off the vacuum pump, open the fourth solenoid water valve, circulate the seawater in the cold water pipe to lower the water temperature, and at the same time open the first valve, the second valve and the blower.

[0029] S9. After the temperature control of the large volume concrete is completed, remove the cold source component, cooling component and control component. Inject the prepared cement grout into the annular cavity and steam channel formed by the grid inside the cold water pipe through vacuum grouting until a stable and continuous grouting appears at the outlet of the cold water pipe. Then stop grouting and seal the inlet and outlet.

[0030] The beneficial effects of this invention are:

[0031] 1. This device uses seawater instead of freshwater as the cold source carrier, saving water costs and adapting to the construction of concrete gravity dams in coastal areas. By using vacuum to lower the boiling point of seawater in the annular cavity of the cold water pipe, the seawater can absorb heat and evaporate more easily when the large-volume concrete generates heat under chemical reaction. The resulting water vapor is condensed by the condensing component to form freshwater, which not only solves the heat dissipation problem, but also obtains condensed freshwater for domestic use, achieving two benefits at once.

[0032] 2. Unlike traditional methods that use circulating water for heat dissipation, the cold water pipes in this device utilize an enhanced evaporation process to achieve heat dissipation. The interior of the cold water pipes is divided into two independent spaces by a grid and a waterproof, breathable membrane. The grid forms an annular cavity to store cooling seawater, effectively absorbing heat from the external concrete. The waterproof, breathable membrane forms tubular steam channels that allow for ventilation and vacuuming, further enhancing evaporation and thus transferring heat.

[0033] 3. This device, with its special arrangement of cold water pipes, multiple valves, and controllers, can achieve different concrete heat dissipation schemes. It is suitable for conventional water cooling schemes, circulating water inside the annular cavity; it is also suitable for water cooling combined with air cooling schemes, using a blower to ventilate the steam passage; and it is even more suitable for water cooling combined with vacuum heat dissipation schemes, using a vacuum machine to create a vacuum environment in the steam passage to facilitate the evaporation of seawater in the annular cavity. The three schemes can be switched at any time according to different working conditions and usage statuses. The switching method is controlled by each valve, which is simple and feasible. Attached Figure Description

[0034] Figure 1 This is a structural diagram of this application.

[0035] Figure 2 This is a cross-sectional structural diagram of the cold water pipe in this application.

[0036] Figure 3 yes Figure 1 A magnified structural diagram of region A in the diagram.

[0037] Figure 4 yes Figure 1 A magnified structural diagram of region B in the diagram.

[0038] Figure 5 yes Figure 1 A magnified structural diagram of region C in the diagram.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Cold water pipe; 2. Seawater; 3. Water storage tower; 4. Water pump; 5. Vacuum pump; 6. Controller; 7. Refrigeration unit; 8. Wire; 9. Refrigeration pipe; 10. Steam pipe; 11. Water delivery pipe; 12. Tower; 13. First electromagnetic water valve; 14. Blower; 15. First valve; 16. Steam cooling chamber; 17. Fresh water; 18. Water level sensor; 19. Explosion-proof safety valve; 20. Vacuum gauge; 21. Electromagnetic vacuum pressure valve; 22. Vacuum tube; 23. Water pressure sensor; 24. Temperature sensor; 25. Salt concentration sensor; 101. Grille; 102. Waterproof and breathable membrane; 103. Steam passage; 1301. Second electromagnetic water valve; 1302. Fourth electromagnetic water valve; 1303. Third electromagnetic water valve; 1501. Second valve; 1502. Third valve.

[0041] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.

[0042] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.

[0043] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0045] Example 1:

[0046] Combination Figures 1 to 5As shown, this embodiment is a temperature control device for large-volume concrete in coastal areas, including a cold source component, a cooling component, a condensing component, a vacuuming component, and a control component. The cold source component is used to extract and store seawater 2. The cooling component is located inside the concrete, with its inlet end connected to the outlet end of the cold source component and its outlet end connected to the condensing component. The condensing component is connected to the vacuuming component. The cold source component, cooling component, condensing component, and vacuuming component are all communicatively connected to the control component, which controls the opening and closing states of each component. The cooling component has an annular cavity inside that can store seawater 2 and is connected to the cold source component. The annular cavity is waterproof, breathable, and isolated to form a hollow steam channel 103. The vacuuming component is used to maintain a vacuum state inside the steam channel 103 to lower the boiling point of the seawater 2 inside the annular cavity. The seawater 2 inside the annular cavity can absorb the heat of hydration generated by the external concrete to form water vapor, which enters the steam channel 103. The condensing component is used to condense the water vapor in the steam channel 103 to form fresh water 17 and collect it.

[0047] In some implementations, the control components include a controller 6, a first electromagnetic water valve 13, a second electromagnetic water valve 1301, and a third electromagnetic water valve 1303. The first electromagnetic water valve 13, the second electromagnetic water valve 1301, and the third electromagnetic water valve 1303 are all connected to the controller 6. The first electromagnetic water valve 13 is provided on the cold source component, which is used to control the cold source component to extract seawater 2. The second electromagnetic water valve 1301 is provided on the condensation component, which is used to control the condensation component to discharge condensed fresh water 17. The third electromagnetic water valve 1303 is provided at the connection between the cold source component and the cooling component, which is used to control the cold source component to replenish water into the annular cavity of the cooling component.

[0048] In some implementations, the cooling source assembly includes a water pump 4, a water delivery pipe 11, a water storage tower 3, and a tower 12. The water pump 4 is connected to a controller 6 via a wire 8. The water storage tower 3 is mounted on the tower 12. One end of the water pump 4 draws seawater 2 through the water delivery pipe 11, and the other end of the water pump 4 is connected to the water storage tower 3 through the water delivery pipe 11. A first electromagnetic water valve 13 is installed on the section of the water delivery pipe 11 between the water pump 4 and the water storage tower 3 to prevent air leakage during vacuuming. The bottom of the side wall of the water storage tower 3 has an opening for the water delivery pipe 11, which is connected to the inlet end of the cooling assembly, allowing the water storage tower 3 to supply water to the annular cavity inside the cooling assembly.

[0049] Furthermore, the water storage tower 3 has a double-layer structure with a vacuum inside the interlayer, and the surface of the tower cover is covered with multiple layers of insulation cotton. A third valve 1502 is installed at the bottom of the water storage tower 3. Inside the water storage tower 3, there is a temperature sensor 24 and a water level sensor 18. The temperature sensor 24 acquires the temperature information of the seawater 2 inside the water storage tower, and the water level sensor 18 acquires the water level information of the seawater 2 inside the water storage tower. If the temperature information is higher than a preset temperature threshold or the water level information is lower than a preset water level threshold, the water pump 4 is controlled to replenish water into the water storage tower, ensuring that the seawater 2 inside the water storage tower 3 is not affected by the external hot or cold environment. By using sensors to detect the temperature and water level inside the water storage tower 3, the temperature and pressure of the seawater 2 inside the water storage tower 3 can be timely regulated to the optimal level to achieve the expected effect of the device.

[0050] Furthermore, in order to obtain seawater 2 at a stable low temperature and fill the water storage tower 3, deep or underground low-temperature seawater 2 can be extracted during hot weather such as summer, or high-temperature seawater 2 can be treated by a corrosion-resistant water-cooled screw chiller to become low-temperature seawater 2, and surface seawater 2 can be extracted during cold weather such as winter.

[0051] In some implementation schemes, such as Figure 2 As shown, the cooling assembly includes a cold water pipe 1, a grille 101, and a waterproof and breathable membrane 102. The two ends of the cold water pipe 1 are connected to a cold source assembly and a condensation assembly, respectively. An annular grille 101 is installed inside the cold water pipe 1. The outer surface of the grille 101 is closed, and the interior of the grille 101 forms an annular cavity that connects to the water delivery pipe 11. The inner surface of the grille 101 is covered with the waterproof and breathable membrane 102, which is internally rolled to form a tubular steam channel 103. A third solenoid valve is installed on the water delivery pipe 11 connected to the inlet end of the cold water pipe 1. The third solenoid valve controls the flow of water in the water delivery pipe 11 to control the water supply from the water storage tower 3 to the annular cavity inside the cold water pipe 1.

[0052] Furthermore, the cold water pipe 1 is arranged in an arc or spiral shape, absorbing the heat emitted by the large volume of concrete through contact and thermal radiation, causing the temperature of the seawater 2 inside the cold water pipe 1 to rise. Specifically, in this embodiment, the cold water pipe 1 is made of plastic, which can prevent corrosion from seawater 2 and can also be thermoplastic extrusion molded, making it easy to manufacture.

[0053] Furthermore, the specific manufacturing and processing method of the cold water pipe 1 is as follows: The cold water pipe 1 and its internal grid 101 are made of plastic extrusion molding. Then, a metal round rod is prepared, and a waterproof and breathable membrane 102 is rolled onto the surface of the round rod. The joints are glued together. Glue is applied to the inner ring of the grid 101. The metal round rod and the waterproof and breathable membrane 102 are inserted, and the contact surfaces are glued together. The metal round rod is then removed, thus forming the cold water pipe 1. The dimensions of the cold water pipe 1 are: diameter 50-60mm, tubular channel diameter 10-15mm, grid 101 spacing 20mm-25mm, and thickness 1-2mm. Specifically, the waterproof and breathable membrane 102 is made of TPU film or EPTFE (polytetrafluoroethylene) film.

[0054] In some implementation schemes, such as Figure 3 As shown, the condensation assembly includes a steam pipe 10, a steam cooling chamber 16, a water level sensor 18, a refrigeration pipe 9, a refrigerator 7, a vacuum gauge 20, and an explosion-proof safety valve 19. The water level sensor 18 and the refrigerator 7 are both connected to the controller 6 via wires 8. The steam cooling chamber 16 is connected to the outlet end of the cold water pipe 1 via the steam pipe 10. The steam pipe 10 is internally connected to a steam channel 103, allowing water vapor in the steam channel 103 to enter the steam cooling chamber 16 through the steam pipe 10. A refrigeration pipe 9 is installed inside the steam cooling chamber 16, with its end connected to the output end of the refrigerator 7. The refrigerant causes the refrigeration pipe 9 to condense the water vapor at a certain temperature inside the steam cooling chamber 16, forming condensate water 17 which collects at the bottom of the steam cooling chamber 16.

[0055] Furthermore, a vacuum gauge 20 and an explosion-proof safety valve 19 are installed on the top of the steam cooling chamber 16. The vacuum gauge 20 can display whether the vacuum level has reached the set value. In the event of a leak in the equipment, the vacuum gauge 20 can immediately detect the decrease in its value, thus allowing for timely implementation of backup measures. The explosion-proof safety valve 19 can automatically open when the negative or positive pressure is too high, preventing irreversible damage to the equipment and personnel.

[0056] Furthermore, a water level sensor 18 for detecting the level of the internal fresh water 17 is installed inside the steam cooling chamber 16, and a second solenoid water valve 1301 is installed at the bottom of the side wall of the steam cooling chamber 16. When the water level sensor 18 detects that the accumulated amount of condensed fresh water 17 in the steam cooling chamber 16 exceeds a set value, the controller 6 controls the shutdown of all equipment and opens the second solenoid water valve 1301 to drain the condensed fresh water 17 accumulated in the steam cooling chamber 16.

[0057] In some implementations, the vacuum assembly includes a vacuum pump 5, a vacuum tube 22, and an electromagnetic vacuum pressure valve 21. The vacuum pump 5 and the electromagnetic vacuum pressure valve 21 are both connected to the controller 6 via a wire 8. The output end of the vacuum pump 5 is connected to the steam cooling chamber 16 via the vacuum tube 22, and the electromagnetic vacuum pressure valve 21 is installed on the vacuum tube 22.

[0058] In some implementation schemes, such as Figure 4 As shown, the control component also includes a fourth electromagnetic water valve 1302, which is connected to the controller 6. A circulating water pipe is provided at the outlet end of the cooling component. One end of the circulating water pipe connects to the annular cavity, and the other end connects to the water storage tower 3. The fourth electromagnetic water valve 1302 is installed on the circulating water pipe. The temperature control device also includes a detection component located inside the cold water pipe 1. The detection component is used to detect the water pressure, temperature, and salt concentration information of the seawater 2 within the annular cavity.

[0059] Furthermore, the detection components include a water pressure sensor 23, a temperature sensor 24, and a salt concentration sensor 25. If the water pressure, temperature, and salt concentration information do not match the preset values ​​inside the controller 6, the controller 6 opens the fourth solenoid water valve 1302, circulating seawater 2 within the annular cavity to cool the concrete. By monitoring the data from each sensor, it is determined whether the fourth solenoid water valve 1302 needs to be opened to circulate seawater 2 for cooling, ensuring the effectiveness of the device.

[0060] In some implementation schemes, such as Figure 5 As shown, the temperature control device also includes an air-cooling component, which includes a blower 14, a first valve 15, and a second valve 1501. The steam pipe 10 at the outlet end of the cold water pipe 1 is connected to the blower 14, which can connect to the steam passage 103. The first valve 15 is installed on a section of the pipe between the blower 14 and the outlet end of the cold water pipe 1. The inlet end of the cold water pipe 1 is connected to an exhaust pipe, which can connect to the steam passage 103. The second valve 1501 is installed on the exhaust pipe.

[0061] Example 2:

[0062] This embodiment describes a method for using a temperature control device for large-volume concrete in coastal areas, including the following steps:

[0063] S1. Install the water pressure sensor 23, temperature sensor 24 and salt concentration sensor 25 into the gaps between the grids 101 of the cold water pipe 1 in the cooling assembly;

[0064] S2. Arrange the support for cold water pipe 1 in the large-volume concrete pouring block, and fix the cold water pipe 1 on the support in an arc shape.

[0065] S3. Connect the cold source component, cooling component, condensation component, vacuuming component and control component, and test the sealing performance of the device;

[0066] S4. First, pour concrete, then open the first electromagnetic water valve 13 and water pump 4 through the controller 6 in the control component, and pump the cooled seawater 2 into the water storage tower 3 through the water delivery pipe 11 until the set water level is reached, then close the first electromagnetic water valve 13 and water pump 4.

[0067] S5. Start vacuuming, open the third electromagnetic water valve 1303, the vacuum pump 5 in the vacuuming assembly, and the refrigerator 7 in the condensation assembly, and close the fourth electromagnetic water valve 1302, the first valve 15, and the second valve 1501; the seawater 2 in the water storage tower 3 is continuously pumped into the cold water pipe 1 under the action of pressure difference to fill the seawater 2 in the cold water pipe 1 that evaporates under vacuum.

[0068] S6. After a certain period of time following step S5, if the sensor indicates that the temperature or salt concentration of seawater 2 in the cold water pipe 1 is too high or the water pressure is too low, turn off the vacuum pump 5, open the fourth electromagnetic water valve 1302, circulate the seawater 2 in the cold water pipe 1 to prevent crystallization from clogging the cold water pipe 1, turn on the water pump 4 and the first electromagnetic water valve 13 to increase the pressure of the water storage tower 3 until the salt concentration and water temperature in the cold water pipe 1 are reduced and the water pressure is increased. Then, continue to turn on the vacuum pump 5 and turn off the fourth electromagnetic water valve 1302, the water pump 4 and the first electromagnetic water valve 13.

[0069] S7. If the sensor in the water storage tower 3 shows that the seawater temperature is higher than the preset temperature threshold or the water level is lower than the preset water level threshold, close the third electromagnetic water valve 1303, open the third valve 1502 to drain the high-temperature seawater 2 in the water storage tower (3), then close the third valve 1502, turn on the water pump 4 and the third electromagnetic water valve 1303, and inject the low-temperature seawater 2.

[0070] S8. When encountering a broken cold water pipe 1 or other situations that prevent vacuuming, turn off the vacuum pump 5, open the fourth electromagnetic water valve 1302, circulate the seawater 2 in the cold water pipe 1 to lower the water temperature, and at the same time open the first valve 15, the second valve 1501 and the blower 14 to allow air to pass through the inside of the steam channel 103, which will intensify the evaporation of the seawater 2 in the grille 101. The combined cooling effect of multiple solutions is better.

[0071] S9. After the temperature control of the large volume concrete is completed, remove the cold source component, cooling component and control component. Inject the prepared cement grout into the annular cavity formed by the inner grid 101 of the cold water pipe 1 and the steam channel 103 by vacuum grouting until a stable and continuous grouting appears at the outlet of the cold water pipe 1. Then stop grouting and seal the inlet and outlet.

[0072] Furthermore, in step S2, when the cold water pipe 1 is connected at the corner, the tubular steam channel 103 inside the cold water pipe 1 is connected with a rubber tube. The two ends of the rubber tube are coated with glue and inserted into the steam channel 103 to a certain depth. The surface of the cold water pipe 1 is connected with a right-angle rigid plastic connector. First, the rubber tube is inserted into the inside of the right-angle rigid plastic connector, and then the tubular channel inside the cold water pipe 1 is connected through the rubber tube. The surface of the cold water pipe 1 is melted with a hot melt machine, and the right-angle rigid plastic connector is quickly inserted.

[0073] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A temperature control device for mass concrete in coastal areas, characterized by, The application relates to a seawater cooling system, which comprises the following components: a cold source component for extracting seawater (2) and storing; a cooling component connected to the water outlet end of the cold source component and arranged in concrete, wherein an annular cavity capable of storing seawater (2) is arranged in the cooling component, a hollow vapor channel (103) is formed in the annular cavity by a waterproof air-permeable film, and seawater (2) in the annular cavity absorbs hydration heat of the concrete to form water vapor and enter the vapor channel (103); a condensing component connected to the end of the cooling component far from the cold source component, wherein the condensing component is used for condensing water vapor in the vapor channel (103) to form fresh water (17) and collecting the fresh water (17); a vacuum pumping component connected to the condensing component, wherein the vacuum pumping component is used for keeping the vapor channel (103) in a vacuum state to reduce the boiling point of seawater (2) in the annular cavity; a control component in communication connection with the cold source component, the cooling component, the condensing component and the vacuum pumping component, wherein the control component is used for controlling the opening and closing states of the components; the cooling component comprises a cold water pipe (1), a grid (101) and a waterproof air-permeable film (102), two ends of the cold water pipe (1) are connected to the cold source component and the condensing component respectively, the grid (101) in a ring shape is arranged in the cold water pipe (1), the annular cavity capable of communicating with the cold source component is formed in the grid (101), the waterproof air-permeable film (102) is arranged at the center position of the grid (101), and the tubular vapor channel (103) is formed in the waterproof air-permeable film (102).

2. The temperature control device for mass concrete in coastal areas according to claim 1, characterized in that: the condensing component comprises a vapor pipe (10), a vapor cooling chamber (16), a water level sensor (18), a refrigeration pipe (9), a refrigeration machine (7), a vacuum gauge (20) and an explosion-proof safety valve (19), the water level sensor (18) and the refrigeration machine (7) are connected to the control component through wires (8), the vapor cooling chamber (16) is connected to the vapor channel (103) through the vapor pipe (10), the refrigeration pipe (9) is arranged in the vapor cooling chamber (16), the end of the refrigeration pipe (9) is connected to the output end of the refrigeration machine (7), the water level sensor (18) for detecting the liquid level of the fresh water (17) in the vapor cooling chamber (16) is arranged in the vapor cooling chamber (16), and the vacuum gauge (20) and the explosion-proof safety valve (19) are arranged on the top of the vapor cooling chamber (16).

3. A temperature control apparatus for mass concrete in coastal areas according to claim 2, characterized in that: the vacuum pumping component comprises a vacuum pump (5), a vacuum pipe (22) and an electromagnetic vacuum pressure regulating valve (21), the vacuum pump (5) and the electromagnetic vacuum pressure regulating valve (21) are connected to the control component through wires (8), the output end of the vacuum pump (5) is connected to the condensing component through the vacuum pipe (22), and the electromagnetic vacuum pressure regulating valve (21) is arranged on the vacuum pipe (22).

4. The temperature control device for mass concrete in coastal areas according to claim 3, characterized in that: The temperature control device further comprises a forced air cooling assembly, the forced air cooling assembly comprises a blower (14), a first valve (15) and a second valve (1501), the outlet end of the cooling assembly is connected with the blower (14) capable of communicating with the steam passage (103), the first valve (15) is installed between the outlet end of the cooling assembly and the blower (14), the inlet end of the cooling assembly is connected with an exhaust pipe capable of communicating with the steam passage (103), and the second valve (1501) is installed on the exhaust pipe.

5. A temperature control apparatus for mass concrete in coastal areas according to claim 4, characterized in that: The control assembly comprises a controller (6), a first electromagnetic water valve (13), a second electromagnetic water valve (1301) and a third electromagnetic water valve (1303), the first electromagnetic water valve (13), the second electromagnetic water valve (1301) and the third electromagnetic water valve (1303) are connected with the controller (6), the first electromagnetic water valve (13) is arranged on the cold source assembly and is used for controlling the cold source assembly to draw seawater (2), the second electromagnetic water valve (1301) is arranged on the condensing assembly and is used for controlling the condensing assembly to discharge condensed fresh water (17), and the third electromagnetic water valve (1303) is arranged at the connection position of the cold source assembly and the cooling assembly and is used for controlling the cold source assembly to supplement water into the annular cavity of the cooling assembly.

6. A temperature control apparatus for mass concrete in coastal areas according to claim 5, characterized in that: The control assembly comprises a fourth electromagnetic water valve (1302), the fourth electromagnetic water valve (1302) is connected with the controller (6), the outlet end of the cooling assembly is provided with a circulating water pipe, one end of the circulating water pipe communicates with the annular cavity, the other end of the circulating water pipe communicates with the cold source assembly, and the fourth electromagnetic water valve (1302) is arranged on the circulating water pipe, the temperature control device further comprises a detection assembly, and the detection assembly is arranged in the cooling assembly, the detection assembly comprises a water pressure sensor (23), a temperature sensor (24) and a salt concentration sensor (25), the detection assembly is used for detecting water pressure information, temperature information and salt concentration information of seawater (2) in the annular cavity, if the water pressure information, the temperature information and the salt concentration information do not meet preset values in the controller (6), the controller (6) is started to open the fourth electromagnetic water valve (1302), so that the circulating seawater (2) in the annular cavity is used to realize concrete cooling and temperature reduction.

7. A temperature control apparatus for mass concrete in coastal areas according to claim 6, characterized in that: The cold source assembly comprises a water pump (4), a conveying water pipe (11), a water storage tower (3) and a tower (12), the water pump (4) is connected with the control assembly through a wire (8), the water storage tower (3) is installed on the tower (12), one end of the water pump (4) draws seawater (2) through the conveying water pipe (11), the other end of the water pump (4) communicates with the water storage tower (3) through the conveying water pipe (11), and the side wall bottom of the water storage tower (3) is connected with the inlet end of the cooling assembly through the conveying water pipe (11).

8. A temperature control apparatus for mass concrete in coastal areas according to claim 7, characterized in that: The water storage tower (3) is a double-layer structure, the interlayer is extracted to vacuum, the surface of the tower cover of the water storage tower (3) is covered with multiple layers of thermal insulation cotton, a third valve (1502) is installed below the water storage tower (3), a temperature sensor (24) and a water level sensor (18) are arranged in the water storage tower (3), the temperature information and the water level information of the seawater (2) in the water storage tower (3) are detected based on the temperature sensor (24) and the water level sensor (18), the water pump (4) is controlled to supplement water into the water storage tower (3) for adjustment, so that the water storage tower (3) can provide seawater (2) with stable temperature.

9. A method of using a temperature control apparatus for mass concrete in a coastal area, characterized by, The temperature control device for large-volume concrete in coastal areas according to claim 8 comprises the following steps: S1, install the water pressure sensor (23), the temperature sensor (24) and the salt concentration sensor (25) into the interstitial space between the grid (101) of the cooling assembly and the cold water pipe (1); S2, arrange the cold water pipe (1) support in the large-volume concrete pouring block, and fix the cold water pipe (1) on the support in an arc shape; S3, connect the cooling assembly, the cooling assembly, the condensing assembly, the vacuum pumping assembly and the control assembly, and test the sealing property of the device; S4, first pour concrete, open the first electromagnetic water valve (13) and the water pump (4) through the controller (6) in the control assembly, draw the cooled seawater (2) into the water storage tower (3) through the water conveying pipe (11), and close the first electromagnetic water valve (13) and the water pump (4) after reaching the set water level; S5, start vacuum pumping, open the third electromagnetic water valve (1303), the vacuum pump (5) in the vacuum pumping assembly and the refrigerating machine (7) in the condensing assembly, close the fourth electromagnetic water valve (1302), the first valve (15) and the second valve (1501); S6, after a certain period of time, if the sensor shows that the temperature or the salt concentration of the seawater (2) in the cold water pipe (1) is too high, or the water pressure is too low, close the vacuum pump (5), open the fourth electromagnetic water valve (1302), circulate the seawater (2) in the cold water pipe (1), open the water pump (4) and the first electromagnetic water valve (13), and then continue to open the vacuum pump (5), close the fourth electromagnetic water valve (1302), the water pump (4) and the first electromagnetic water valve (13) after the salt concentration, the water temperature in the cold water pipe (1) is reduced and the water pressure is increased; S7, if the sensor in the water storage tower (3) shows that the seawater temperature is higher than the preset temperature threshold or the water level is lower than the preset water level threshold, close the third electromagnetic water valve (1303), open the third valve (1502) to empty the high-temperature seawater (2) in the water storage tower (3), then close the third valve (1502), open the water pump (4) and the first electromagnetic water valve (13), and inject low-temperature seawater (2); S8, when the cold water pipe (1) is damaged or other conditions cause the vacuum pumping to fail, close the vacuum pump (5), open the fourth electromagnetic water valve (1302), circulate the seawater (2) in the cold water pipe (1), reduce the water temperature, and simultaneously open the first valve (15), the second valve (1501) and the air blower (14). S9, after the temperature control of the mass concrete is finished, the cold source assembly, the cooling assembly and the control assembly are removed, the prepared cement paste is poured into the annular cavity and the steam passage (103) formed by the grid (101) in the cold water pipe (1) through the vacuum pressure grouting, and after the stable and continuous spouting of the cement paste appears at the outlet of the cold water pipe (1), the pressure grouting is stopped and the inlet and outlet are closed.

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