Temperature control device for mass concrete in coastal area and use method of temperature control device

Abstract

The invention relates to a coastal area mass concrete temperature control device and a using method thereof. The method is suitable for the technical field of concrete temperature control. According to the technical scheme, the temperature control device for the mass concrete in the coastal area comprises a cold source assembly used for extracting and storing seawater; the cooling assembly is connected to the water outlet end of the cold source assembly and arranged in the concrete, an annular containing cavity capable of storing seawater is formed in the cooling assembly, and the interior of the annular containing cavity is waterproof, breathable and isolated to form a hollow steam channel; the condensation assembly is connected to the end, away from the cold source assembly, of the cooling assembly and used for condensing water vapor in the steam channel to form fresh water and collecting the fresh water; the vacuumizing assembly is connected to the condensation assembly, and the vacuumizing assembly is used for keeping the interior of the steam channel in a vacuum state; and the control assembly is in communication connection with the cold source assembly, the cooling assembly, the condensation assembly and the vacuumizing assembly, and the control assembly is used for controlling the opening and closing states of all the assemblies.

Description

Technical Field

[0001] The invention relates to the technical field of concrete temperature control, in particular to a temperature control device for large-volume concrete in coastal areas and a use method thereof. Background Art

[0002] As a large-volume concrete structure, the concrete gravity dam has an uneven distribution of temperature field in time and space due to the influence of hydration heat, and its own deformation is not coordinated. At the same time, it is constrained by the foundation, which is easy to produce self-constrained stress and foundation constrained stress. If the stress exceeds the crack resistance of concrete, it may cause cracks in the dam body. Therefore, the construction of concrete dams requires extra attention to temperature control and crack prevention. Cold water pipe solutions are often used in engineering to reduce the temperature.

[0003] Faced with the high standards for the construction of large-volume concrete gravity dams in coastal areas, the current temperature control solution for cold water pipes is subject to certain limitations in the application of this scenario: freshwater resources in coastal areas are precious, and the cold water pipe solution requires a large amount of water for cooling, so using seawater as a cooling carrier is a feasible solution. If the hydration heat can be effectively used to extract fresh water, the effect of the cold water pipe solution can be further improved, which will produce greater economic benefits. But at the same time, seawater is corrosive, and crystals will form after evaporation, which is easy to clog and corrode pipes in the long term, making it difficult to apply. Therefore, a technology is needed to solve the above problems and meet the high requirements for cracks 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: in view of the above-mentioned existing problems, a temperature control device for large volume concrete in coastal areas and a method of using the same are provided.

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

[0006] Cold source component, used to extract seawater and store it;

[0007] A cooling component is connected to the water outlet of the cold source component and is arranged in the concrete. An annular cavity capable of storing seawater is arranged inside the cooling component. The interior of the annular cavity is waterproof and breathable and isolated to form a hollow steam channel, so that the seawater in the annular cavity absorbs the hydration heat of the concrete to form water vapor and enter the steam channel;

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

[0009] A vacuum pumping assembly connected to the condensing assembly, the vacuum pumping assembly is used to keep the interior of the steam channel in a vacuum state so as to reduce the boiling point of the seawater in the annular cavity;

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

[0011] Through the above technical means, the steam channel is evacuated by using a vacuum pumping component, so that the boiling point of the seawater in the annular cavity is reduced under a vacuum state. Therefore, the seawater in the annular cavity is more likely to form water vapor and enter the steam channel under the action of the external concrete hydration heat. The water vapor in the steam channel is condensed into fresh water by the condensation component and collected. Therefore, the 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 grille and a waterproof 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 a ring-shaped grille. The interior of the grille forms an annular cavity that can connect to the cold source component. The center of the grille is covered with a waterproof breathable membrane, and a tubular steam channel is formed inside the waterproof breathable membrane.

[0013] In some embodiments, the condensation component 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 component via wires. The steam cooling chamber is connected to the steam channel via a steam pipe. A refrigeration pipe is installed in 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 fresh water level is installed in the steam cooling chamber, and 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 pump assembly includes a vacuum pump, a vacuum tube and an electromagnetic vacuum air-pressure valve. The vacuum pump and the electromagnetic vacuum air-pressure valve are connected to the control assembly via wires. The output end of the vacuum pump is connected to the condensation assembly via a vacuum tube, and an electromagnetic vacuum air-pressure valve is installed on the vacuum tube.

[0015] In some embodiments, the temperature control device also 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 the blower capable of communicating with the steam channel, a first valve is installed between the outlet end of the cooling component and the blower, and the inlet end of the cooling component is connected to an exhaust pipe capable of communicating with the steam channel, and a second valve is installed on the exhaust pipe.

[0016] In some embodiments, the control component includes a controller, a first solenoid water valve, a second solenoid water valve and a third solenoid water valve. The first solenoid water valve, the second solenoid water valve and the third solenoid water valve are all connected to the controller. The cold source component is provided with a first solenoid water valve, and the first solenoid water valve is used to control the cold source component to extract seawater. The condensation component is provided with a second solenoid water valve, and the second solenoid water valve is used to control the condensation component to discharge condensed fresh water. A third solenoid water valve is provided at the connection between the cold source component and the cooling component, and the third solenoid water valve 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, which is connected to the controller. A circulating water pipe is provided at the outlet end of the cooling component, one end of the circulating water pipe is connected to the annular cavity, and the other end of the circulating water pipe is connected to the cold source component. The fourth electromagnetic water valve is provided on the circulating water pipe. The temperature control device also includes a detection component, which is arranged 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 information, temperature information and salt concentration information of the seawater in the annular cavity. If the water pressure information, temperature information 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 cooling of the concrete.

[0018] In some embodiments, the cold source component includes a water pump, a water delivery pipe, a water storage tower and a tower frame. The water pump is connected to the control component via a wire, and a water storage tower is installed on the tower frame. 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 tower has a double-layer structure, the interlayer is evacuated to a vacuum, the surface of the water tower cover is covered with multiple layers of thermal insulation cotton, a third valve is installed under the water tower, and a temperature sensor and a water level sensor are provided inside the water tower. The temperature and water level information of the seawater in the water tower are detected by the temperature sensor and the water level sensor, and the water pump is controlled to replenish water into the water tower, so that the water tower can provide seawater with a stable temperature.

[0020] Another technical solution adopted by the present invention is: a method for using a temperature control device for large-volume concrete in coastal areas, which is applied to the temperature control device for large-volume concrete in coastal areas, and comprises the following steps:

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

[0022] S2. Arrange cold water pipe brackets in the large-volume concrete pouring block and fix the cold water pipes on the brackets in an arch shape;

[0023] S3. Connect the cold source component, the cooling component, the condensing component, the vacuum component and the control component, and test the sealing of the device;

[0024] S4, pouring concrete first, opening the first electromagnetic water valve and the water pump through the controller in the control assembly, pumping the cooled seawater into the water storage tower through the delivery pipe until the water level reaches the set height line, and then closing the first electromagnetic water valve and the water pump;

[0025] S5, start vacuuming, open the third electromagnetic water valve, the vacuum pump in the vacuuming assembly, and the refrigerator in the condensing assembly, and close the fourth electromagnetic water valve, the first valve, and the second valve;

[0026] S6. After continuing step S5 for a certain period of time, when the sensor shows that the seawater temperature or salt concentration in the cold water pipe is too high and the water pressure is too low, the vacuum pump is turned off, the fourth electromagnetic water valve is turned on, the seawater in the cold water pipe is circulated, and the water pump and the first electromagnetic water valve are turned on until the salt concentration and water temperature in the cold water pipe are reduced and the water pressure is increased, the vacuum pump is turned on again, and the fourth electromagnetic water valve, the water pump and the first electromagnetic water valve are turned off;

[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, open the water pump and the third electromagnetic water valve, and inject low-temperature seawater;

[0028] S8. When the cold water pipe is damaged or other conditions make it impossible to draw a vacuum, turn off the vacuum pump, open the fourth electromagnetic water valve, circulate the seawater in the cold water pipe to lower the water temperature, and open the first valve, the second valve and the blower at the same time;

[0029] S9. After the temperature control of large-volume concrete is completed, the cold source components, cooling components and control components are removed, and the prepared cement slurry is poured into the annular cavity and steam channel formed by the grille in the cold water pipe by vacuum grouting until a stable and continuous slurry appears at the outlet of the cold water pipe. Then the grouting is stopped and the inlet and outlet are closed.

[0030] The beneficial effects of the present invention are:

[0031] 1. This device uses seawater instead of fresh water as a cold source carrier, saving water costs and being able to adapt to the construction of concrete gravity dams in coastal areas. By using a vacuum method to reduce the boiling point of seawater in the inner annular cavity of the cold water pipe, when large-volume concrete generates heat under chemical reactions, seawater can absorb heat and evaporate more easily. The water vapor formed is condensed into fresh water through the condensation component, which not only solves the heat dissipation problem, but also can obtain condensed fresh water as domestic water, killing two birds with one stone.

[0032] 2. The cold water pipe in this device is different from the traditional form of circulating water to dissipate heat. Instead, it uses intensified evaporation to achieve heat dissipation. The cold water pipe is divided into two independent spaces by a grid and a waterproof breathable membrane. The inside of the grid forms an annular cavity for storing cooling seawater, which can effectively absorb the heat of the external concrete. The inside of the waterproof breathable membrane forms a tubular steam channel, which can be ventilated and vacuumed to intensify evaporation and achieve heat transfer.

[0033] 3. The device combines the special arrangement of cold water pipes, multiple valves and controllers to achieve different concrete heat dissipation solutions. It can be applied to conventional water cooling solutions, where water circulates inside the annular cavity, and can also be applied to water cooling combined with air cooling solutions, where a blower is used to ventilate the steam channel. It is more suitable for water cooling combined with vacuum heat dissipation solutions, where a vacuum machine is used to create a vacuum environment in the steam channel to facilitate the evaporation of seawater in the annular cavity. The three solutions can be switched at any time according to different working conditions and usage states, and the switching method is simple and feasible to control through various valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of this application.

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

[0036] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of area A in FIG.

[0037] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of area B in FIG.

[0038] Figure 5 yes Figure 1 Schematic diagram of the enlarged structure of the C region.

[0039] Description of reference numerals:

[0040] 1. Cold water pipe; 2. Sea water; 3. Water storage tower; 4. Water pump; 5. Vacuum pump; 6. Controller; 7. Refrigerator; 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 air pressure valve; 22. Vacuum tube; 23. Water pressure sensor; 24. Temperature sensor; 25. Salt concentration sensor; 101. Grille; 102. Waterproof breathable membrane; 103. Steam channel; 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 "an embodiment." The appearance of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. The particular features, structures or characteristics may be combined in any suitable manner consistent with the present disclosure.

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

[0043] "First," "second," etc. As used herein, these terms act as labels for the nouns that precede them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with specific embodiments.

[0045] Embodiment 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 vacuum component and a control component. The cold source component is used to extract and store seawater 2. The cooling component is arranged inside the concrete. The inlet end of the cooling component is connected to the water outlet end of the cold source component. The outlet end of the cooling component is connected to the condensing component, and the condensing component is connected to the vacuum component. The cold source component, the cooling component, the condensing component and the vacuum component are all connected to the control component for communication. The control component is used to control the opening and closing state of each component. An annular cavity that can store seawater 2 and is connected to the cold source component is provided inside the cooling component. The inside of the annular cavity is waterproof and breathable to form a hollow steam channel 103. The vacuum component is used to keep the inside of the steam channel 103 in a vacuum state to reduce the boiling point of the seawater 2 in the annular cavity. The seawater 2 in the annular cavity can absorb the hydration heat generated by the external concrete to form water vapor, so that the water vapor 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 embodiments, the control component includes a controller 6, a first solenoid water valve 13, a second solenoid water valve 1301 and a third solenoid water valve 1303. The first solenoid water valve 13, the second solenoid water valve 1301 and the third solenoid water valve 1303 are all connected to the controller 6. The cold source component is provided with a first solenoid water valve 13, and the first solenoid water valve 13 is used to control the cold source component to extract seawater 2. The condensation component is provided with a second solenoid water valve 1301, and the second solenoid water valve 1301 is used to control the condensation component to discharge condensed fresh water 17. The third solenoid water valve 1303 is provided at the connection between the cold source component and the cooling component, and the third solenoid water valve 1303 is used to control the cold source component to replenish water into the annular cavity of the cooling component.

[0048] In some embodiments, the cold source assembly includes a water pump 4, a water delivery pipe 11, a water storage tower 3 and a tower 12, and the water pump 4 is connected to the controller 6 via a wire 8. The water storage tower 3 is installed on the tower 12, one end of the water pump 4 extracts 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 water delivery pipe 11 is installed in the bottom opening of the side wall of the water storage tower 3, and is connected to the inlet end of the cooling assembly through the water delivery pipe 11, so that the water storage tower 3 can deliver water to the annular cavity in the cooling assembly.

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

[0050] Furthermore, in order to obtain stable and relatively low-temperature seawater 2 to fill the water storage tower 3, deep or underground low-temperature seawater 2 is extracted in hot weather such as summer, or high-temperature seawater 2 is processed by an anti-corrosion water-cooled screw chiller to become low-temperature seawater 2, and surface seawater 2 is extracted in cold weather such as winter.

[0051] In some embodiments, such as Figure 2 As shown, the cooling component includes a cold water pipe 1, a grille 101 and a waterproof breathable membrane 102. The two ends of the cold water pipe 1 are respectively connected to the cold source component and the condensation component. The cold water pipe 1 is installed with a ring-shaped grille 101 inside. The outer surface of the grille 101 is closed. The inside of the grille 101 forms an annular cavity that can be connected to the delivery water pipe 11. The inner surface of the grille 101 is covered with a waterproof breathable membrane 102. The waterproof breathable membrane 102 is curled inside to form a tubular steam channel 103. The delivery water pipe 11 connected to the inlet end of the cold water pipe 1 is installed with a third solenoid valve, which is used to control the on and off of the water flow in the delivery water pipe 11 to control the water storage tower 3 to replenish water to the annular cavity inside the cold water pipe 1.

[0052] Furthermore, the cold water pipe 1 is arranged in a bow shape or a spiral shape, and absorbs the heat emitted by the large volume of concrete by contact and thermal radiation, so that the temperature of the seawater 2 in the cold water pipe 1 increases. Specifically, in this embodiment, the cold water pipe 1 is made of plastic material, which can prevent corrosion from the seawater 2 and can also be formed by thermoplastic extrusion, which is convenient for production and manufacturing.

[0053] Furthermore, the specific production and processing method of the cold water pipe 1 is as follows: the cold water pipe 1 and the grid 101 inside are formed by plastic extrusion, and then a metal round rod is prepared, the waterproof breathable membrane 102 is rolled on the surface of the round rod, the interface is glued, the glue is applied on the inner ring of the grid 101, the metal round rod and the waterproof breathable membrane 102 on it are inserted, the contact surfaces are glued together, and the metal round rod is pulled out to form the cold water pipe 1. The size of the cold water pipe 1 is: diameter 50-60mm, tubular channel diameter 10-15mm, grid 101 spacing 20mm-25mm, thickness 1-2mm. Specifically, the waterproof breathable membrane 102 uses TPU film or EPTFE (polytetrafluoroethylene) film.

[0054] In some embodiments, 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 connected to the controller 6 via a wire 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 the steam channel 103, so that the water vapor in the steam channel 103 can enter the steam cooling chamber 16 through the steam pipe 10. A refrigeration pipe 9 is installed in the steam cooling chamber 16, and the end of the refrigeration pipe 9 is connected to the output end of the refrigerator 7. The refrigeration pipe 9 condenses the water vapor with a certain temperature in the steam cooling chamber 16 through the refrigerant, forming condensed fresh water 17 that is collected 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 degree has reached the set value. When the device leaks, the vacuum gauge 20 can immediately observe that its value has decreased, so that backup measures can be taken in time. The explosion-proof safety valve 19 can automatically explode when the negative pressure or positive pressure is too large to prevent irreversible damage to the device and users.

[0056] Furthermore, a water level sensor 18 for detecting the liquid level of the fresh water 17 inside is installed in the steam cooling chamber 16, and a second electromagnetic 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 the set value, the controller 6 controls to stop running all devices and opens the second electromagnetic water valve 1301 to drain the condensed fresh water 17 accumulated in the steam cooling chamber 16.

[0057] In some embodiments, the vacuum pump assembly includes a vacuum pump 5, a vacuum tube 22 and an electromagnetic vacuum air-pressure valve 21. The vacuum pump 5 and the electromagnetic vacuum air-pressure valve 21 are 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 air-pressure valve 21 is installed on the vacuum tube 22.

[0058] In some embodiments, 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 is connected to the annular cavity, and the other end of the circulating water pipe is connected to the water storage tower 3. The fourth electromagnetic water valve 1302 is provided on the circulating water pipe. The temperature control device also includes a detection component, which is arranged inside the cold water pipe 1, and is used to detect the water pressure information, temperature information and salt concentration information of the seawater 2 in the annular cavity.

[0059] Furthermore, the detection component includes a water pressure sensor 23, a temperature sensor 24 and a salt concentration sensor 25. If the water pressure information, the temperature information and the salt concentration information do not meet the preset values ​​in the controller 6, the controller 6 opens the fourth electromagnetic water valve 1302 to circulate the seawater 2 in the annular cavity to achieve cooling of the concrete. By monitoring the data of each sensor, it is determined whether it is necessary to open the fourth electromagnetic water valve 1302 to circulate the seawater 2 to cool down, thereby ensuring the use effect of the device.

[0060] In some embodiments, 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 that can be connected to the steam channel 103. The first valve 15 is installed on the partial pipe section 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 that can be connected to the steam channel 103, and the second valve 1501 is installed on the exhaust pipe.

[0061] Embodiment 2:

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

[0063] S1, installing the water pressure sensor 23, the temperature sensor 24 and the salt concentration sensor 25 into the pores between the grilles 101 of the cold water pipe 1 in the cooling assembly;

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

[0065] S3. Connect the cold source component, the cooling component, the condensing component, the vacuum component and the control component, and test the sealing of the device;

[0066] S4, pour concrete first, open the first electromagnetic water valve 13 and the water pump 4 through the controller 6 in the control assembly, pump the cooled seawater 2 into the water storage tower 3 through the water delivery pipe 11 until the water level reaches the set height line, and then close the first electromagnetic water valve 13 and the 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 condensing 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 infused into the cold water pipe 1 under the action of the pressure difference to fill the seawater 2 in the cold water pipe 1 that evaporates under the vacuum state;

[0068] S6. After continuing step S5 for a certain period of time, when the sensor shows that the temperature or salt concentration of the seawater 2 in the cold water pipe 1 is too high and the water pressure is too low, the vacuum pump 5 is turned off, the fourth electromagnetic water valve 1302 is turned on, the seawater 2 in the cold water pipe 1 is circulated to prevent crystallization from clogging the cold water pipe 1, the water pump 4 and the first electromagnetic water valve 13 are turned on, and the pressure of the water storage tower 3 is increased until the salt concentration and water temperature in the cold water pipe 1 are reduced and the water pressure is increased, the vacuum pump 5 is continued to be turned on, and the fourth electromagnetic water valve 1302, the water pump 4 and the first electromagnetic water valve 13 are turned off;

[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, open the water pump 4 and the third electromagnetic water valve 1303, and inject the low-temperature seawater 2;

[0070] S8. When the cold water pipe 1 is damaged or other situations make it impossible to draw a vacuum, the vacuum pump 5 is turned off, the fourth electromagnetic water valve 1302 is opened, the seawater 2 in the cold water pipe 1 is circulated to reduce the water temperature, and the first valve 15, the second valve 1501 and the blower 14 are opened at the same time to allow wind to pass through the steam channel 103 to intensify the evaporation of the seawater 2 in the grille 101. The cooling effect is better when multiple schemes are superimposed;

[0071] S9. After the temperature control of the large volume concrete is completed, the cold source component, the cooling component and the control component are removed, and the prepared cement slurry is poured into the annular cavity formed by the grid 101 in 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, the grouting is stopped and the inlet and outlet are closed.

[0072] Furthermore, in step S2, when the cold water pipe 1 is docked at the corner, the tubular steam channel 103 inside the cold water pipe 1 is connected with a rubber tube, the surfaces of both ends of the rubber tube are coated with glue, and inserted into the steam channel 103 to a certain depth, and the surface of the cold water pipe 1 is connected with a right-angle hard plastic joint. The rubber tube is first inserted into the right-angle hard plastic joint, 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 hard plastic joint can be quickly inserted.

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

Claims

1. A temperature control device for large volume concrete in coastal areas, characterized in that: include: A cold source component, used for extracting seawater (2) and storing it; A cooling component is connected to the water outlet of the cold source component and is arranged in the concrete. An annular cavity capable of storing seawater (2) is arranged inside the cooling component. The interior of the annular cavity is waterproof and breathable and isolated to form a hollow steam channel (103), so that the seawater (2) in the annular cavity absorbs the hydration heat of the concrete to form water vapor and enter the steam channel (103); A condensation component connected to the end of the cooling component away from the cold source component, the condensation component is used to condense the water vapor in the steam channel (103) to form fresh water (17) and collect it; A vacuum pumping assembly connected to the condensing assembly, the vacuum pumping assembly being used to maintain a vacuum state inside the steam channel (103) to reduce the boiling point of the seawater (2) in the annular cavity; The control component is communicatively connected with the cold source component, the cooling component, the condensing component, and the vacuuming component, and is used to control the opening and closing states of each component.

2. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: The cooling component comprises a cold water pipe (1), a grille (101) and a waterproof breathable membrane (102); the two ends of the cold water pipe (1) are respectively connected to the cold source component and the condensation component; an annular grille (101) is provided inside the cold water pipe (1); an annular cavity capable of communicating with the cold source component is formed inside the grille (101); the center of the grille (101) is covered with a waterproof breathable membrane (102); a tubular steam channel (103) is formed inside the waterproof breathable membrane (102).

3. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: The condensation component comprises 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 connected to the control component via a wire (8); the steam cooling chamber (16) is connected to a steam channel (103) via the steam pipe (10); a refrigeration pipe (9) is installed in the steam cooling chamber (16); the end of the refrigeration pipe (9) is connected to the output end of the refrigerator (7); a water level sensor (18) for detecting the liquid level of fresh water (17) inside the steam cooling chamber (16); and a vacuum gauge (20) and an explosion-proof safety valve (19) are installed on the top of the steam cooling chamber (16).

4. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: The vacuum pump assembly comprises a vacuum pump (5), a vacuum tube (22) and an electromagnetic vacuum pressure relief valve (21); the vacuum pump (5) and the electromagnetic vacuum pressure relief valve (21) are both connected to the control assembly via a wire (8); the output end of the vacuum pump (5) is connected to the condensation assembly via the vacuum tube (22); and the electromagnetic vacuum pressure relief valve (21) is installed on the vacuum tube (22).

5. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: 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 outlet end of the cooling component is connected to the blower (14) capable of communicating with the steam channel (103); the first valve (15) is installed between the outlet end of the cooling component and the blower (14); the inlet end of the cooling component is connected to an exhaust pipe capable of communicating with the steam channel (103); and the second valve (1501) is installed on the exhaust pipe.

6. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: The control component 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 all connected to the controller (6); the cold source component is provided with a first electromagnetic water valve (13); the first electromagnetic water valve (13) is used to control the cold source component to extract seawater (2); the condensation component is provided with a second electromagnetic water valve (1301); the second electromagnetic water valve (1301) 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; the third electromagnetic water valve (1303) is used to control the cold source component to replenish water into the annular cavity of the cooling component.

7. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: The control component comprises 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 is connected to the annular cavity, and the other end of the circulating water pipe is connected to the cold source component; the fourth electromagnetic water valve (1302) is provided on the circulating water pipe; the temperature control device further comprises a detection component, which is arranged inside the cooling component; the detection component comprises a water pressure sensor (23), a temperature sensor (24) and a salt concentration sensor (25); the detection component is used to detect water pressure information, temperature information and salt concentration information of the seawater (2) in the annular cavity; if the water pressure information, temperature information and salt concentration information do not meet the preset values ​​inside the controller (6), the controller (6) opens the fourth electromagnetic water valve (1302), so that the seawater (2) circulates in the annular cavity to achieve cooling of the concrete.

8. The temperature control device for large volume concrete in coastal areas according to claim 1, characterized in that: The cold source component comprises a water pump (4), a water delivery pipe (11), a water storage tower (3) and a tower frame (12); the water pump (4) is connected to the control component via a wire (8); the water storage tower (3) is installed on the tower frame (12); one end of the water pump (4) extracts seawater (2) via the water delivery pipe (11); the other end of the water pump (4) is connected to the water storage tower (3) via the water delivery pipe (11); and the bottom of the side wall of the water storage tower (3) is connected to the inlet end of the cooling component via the water delivery pipe (11).

9. The temperature control device for large volume concrete in coastal areas according to claim 8, characterized in that: The water storage tower (3) is a double-layer structure, the interlayer is evacuated to a vacuum, the tower cover surface 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), and a temperature sensor (24) and a water level sensor (18) are provided inside the water storage tower (3). Based on the temperature information and water level information of the seawater (2) in the water storage tower (3) detected by the temperature sensor (24) and the water level sensor (18), the water pump (4) is controlled to adjust the water supply to the water storage tower (3), so that the water storage tower (3) can provide seawater (2) with a stable temperature.

10. A method for using a temperature control device for large-volume concrete in coastal areas, characterized in that: The temperature control device for large-volume concrete in coastal areas according to any one of claims 1 to 9 comprises the following steps: S1, installing a water pressure sensor (23), a temperature sensor (24) and a salt concentration sensor (25) into the gaps between the grilles (101) of the cold water pipe (1) in the cooling assembly; S2. Arrange a cold water pipe (1) bracket in the large-volume concrete pouring block, and fix the cold water pipe (1) on the bracket in an arch shape; S3. Connect the cold source component, the cooling component, the condensing component, the vacuum component and the control component, and test the sealing of the device; S4, pouring concrete first, opening the first electromagnetic water valve (13) and the water pump (4) through the controller (6) in the control assembly, pumping the cooled seawater (2) into the water storage tower (3) through the water delivery pipe (11) until the water level reaches the set height line, and then closing the first electromagnetic water valve (13) and the water pump (4); S5, start vacuuming, open the third electromagnetic water valve (1303), the vacuum pump (5) in the vacuuming component, and the refrigerator (7) in the condensing component, and close the fourth electromagnetic water valve (1302), the first valve (15), and the second valve (1501); S6. After continuing step S5 for a certain period of time, when the sensor shows that the temperature or salt concentration of the seawater (2) in the cold water pipe (1) is too high or the water pressure is too low, the vacuum pump (5) is turned off, the fourth electromagnetic water valve (1302) is turned on, the seawater (2) in the cold water pipe (1) is circulated, and the water pump (4) and the first electromagnetic water valve (13) are turned on until the salt concentration and water temperature in the cold water pipe (1) are reduced and the water pressure is increased, the vacuum pump (5) is turned on again, and the fourth electromagnetic water valve (1302), the water pump (4) and the first electromagnetic water valve (13) are turned off; S7. If the sensor in the water storage tower (3) indicates that the seawater temperature is higher than a preset temperature threshold or the water level is lower than a 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), open the water pump (4) and the third electromagnetic water valve (1303), and inject the low-temperature seawater (2); S8. When the cold water pipe (1) is damaged or other situations make it impossible to draw a vacuum, the vacuum pump (5) is turned off, the fourth electromagnetic water valve (1302) is opened, the seawater (2) in the cold water pipe (1) is circulated to reduce the water temperature, and the first valve (15), the second valve (1501) and the blower (14) are opened at the same time; S9. After the temperature control of the large volume concrete is completed, the cold source component, the cooling component and the control component are removed, and the prepared cement slurry is poured into the annular cavity and the steam channel (103) formed by the grid (101) inside the cold water pipe (1) by vacuum grouting until a stable and continuous grouting appears at the outlet of the cold water pipe (1), then the grouting is stopped and the inlet and outlet are closed.

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