阅读说明：本技术 一种大体积混凝土冷却装置及使用方法 (Large-volume concrete cooling device and using method ) 是由 刘龙 徐雯涛 郭欣 左可魏 毕迎迎 王修养 姜文豪 王颖 于 2020-05-29 设计创作，主要内容包括：本申请公开一种大体积混凝土冷却装置,包括多层沿着上下方向平行排列设置的冷却系统、一号、二号冷却液储备箱,各层的冷却系统结构相同,所述的冷却系统包括管道系统,所述管道系统包括双层组合管,若干个双层组合管的中间节段并排平行设置,并且相邻的两个双层组合管的端部之间采用双层橡胶软管节头连接,所述的管道系统一端的内、外管通分别连接一号冷却液储备箱的进液口、出液口,所述的管道系统另一端的内、外管分别连接二号冷却液储备箱的出液口、进液口,若干个应力-温度传感器均匀分布在双层组合管的外管壁上和混凝土的外表面上,检测外管壁与混凝土外表面温差,调整双层组合管内、外管冷却液流量和流速,提高混凝土冷却效率和效果。(The application discloses a bulky concrete cooling device, including cooling system, a coolant liquid reserve tank, No. two coolant liquid reserve tanks that the multilayer set up along upper and lower direction parallel arrangement, the cooling system structure of each layer is the same, cooling system include pipe-line system, pipe-line system includes double-deck combination pipe, the middle festival section parallel arrangement of a plurality of double-deck combination pipe side by side to adopt double-deck rubber hose festival head to connect between the tip of two adjacent double-deck combination pipes, the inside and outside pipe expert of pipe-line system one end connect inlet, the liquid outlet of a coolant liquid reserve tank respectively, the inside and outside pipe of the pipe-line system other end connect liquid outlet, the inlet of No. two coolant liquid reserve tanks respectively, a plurality of stress-temperature sensor evenly distributed on the outer pipe wall of double-deck combination pipe and on the surface of concrete, detect the outer pipe wall and the surface difference in temperature, the flow and the flow speed of the cooling liquid in the inner pipe and the outer pipe of the double-layer combined pipe are adjusted, and the cooling efficiency and the cooling effect of the concrete are improved.)

1. A bulky concrete cooling device which characterized in that: including cooling system, coolant liquid reserve tank (10), No. two coolant liquid reserve tanks (11) that the multilayer set up along upper and lower direction parallel arrangement, the cooling system structure of each layer is the same, cooling system include pipe-line system, coolant liquid regulation and control system, data monitoring control system, pipe-line system includes double-deck combination pipe (1), double-deck rubber hose festival head (9), double-deck combination pipe (1) is including middle section, middle section includes inner tube (7), outer tube (6), coolant liquid regulation and control system includes coolant liquid flow control device (5), ordinary pipeline (13), pipe-line system is by parallel arrangement side by side of a plurality of double-deck combination pipe (1) to adopt double-deck rubber hose festival head (9) to connect between the tip of two adjacent double-deck combination pipe (1), inner tube (7) of pipe-line system one end connect through the inlet of an ordinary pipeline and coolant liquid reserve tank (10) The outer pipe (6) at the end is connected with a liquid outlet of a first cooling liquid storage box (10) through a common pipeline (13), a cooling liquid flow control device (5) is installed on the section of the common pipeline, a hydraulic pump is arranged in the cooling liquid flow control device (5), the inner pipe (7) at the other end of the pipeline system is connected with a liquid outlet of a second cooling liquid storage box (11) through a common pipeline, a cooling liquid flow control device (5) is installed on the section of the common pipeline, and the outer pipe (6) at the end is connected with a liquid inlet of the second cooling liquid storage box (11) through a common pipeline (13); the data detection and analysis system comprises a stress-temperature sensor (2) and a data processor (12); the stress-temperature sensors (2) are uniformly distributed on the pipe wall of the outer pipe (7) of the double-layer combined pipe (1), meanwhile, the stress-temperature sensors (2) are uniformly distributed on the outer surface of concrete and are in contact with the concrete, and the stress-temperature sensors (2) and the cooling liquid flow control device (5) are connected with the data processor (12).

2. The mass concrete cooling device according to claim 1, wherein: the distance between two adjacent double-layer combined pipes (1) is 0.65-0.8 m, the distance between the double-layer combined pipes (1) of the adjacent upper-layer or lower-layer cooling system is 0.65-0.8 m, and the combined pipeline at the edge of the outer layer of the concrete is 0.65-0.8 m away from the edge of the concrete.

3. The mass concrete cooling device according to claim 2, wherein: a first supporting member (8) is arranged between the inner pipe (7) and the outer pipe (6) at equal intervals along the length direction; double-deck rubber hose festival head (9) are including inlayer rubber hose (92), outer rubber hose (91), are provided with supporting member two (4) along length direction equal department of interval distance between inlayer rubber hose (92) and outer rubber hose (91), outer rubber hose (91) both ends respectively with two adjacent outer tube (6) tip fixed connection, inlayer rubber hose (92) respectively with two adjacent inner tube (7) tip fixed connection.

4. The mass concrete cooling device according to claim 3, wherein: the cooling liquid is inhibitory propylene glycol.

5. The mass concrete cooling device according to claim 4, wherein: the structure that inner tube (7) of pipe-line system one end be connected through the inlet of a common pipeline and a coolant liquid storage tank (10) does: the double-layer combined pipe (1) further comprises end sections, the middle sections at the two ends of the pipeline system are respectively connected with one end section through a double-layer rubber hose joint (9), the end sections and the middle sections are basically the same in structure, and an inner pipe (7) of the double-layer combined pipe (1) penetrates out of the pipe wall of the outer pipe (6) at one side port; an end section inner pipe (7) at one end of the pipeline system penetrates through the outer pipe (6) and is connected with a liquid inlet of a first cooling liquid storage tank (10) through a common pipeline, and the end section outer pipe (6) is connected with a liquid outlet of the first cooling liquid storage tank (10) through a common pipeline (13);

the structure that an inner pipe (7) at the other end of the pipeline system is connected with a liquid outlet of a second cooling liquid storage tank (11) through a common pipeline is as follows: the inner pipe (7) at the other end of the pipeline system penetrates through the outer pipe (6) and then is connected with a liquid outlet of the second cooling liquid storage box (11) through a common pipeline, and the outer pipe (6) at the end section is connected with a liquid inlet of the second cooling liquid storage box (11) through a common pipeline (13).

6. The method of using the mass concrete cooling device according to claim 5, wherein: the method comprises the following steps:

the method comprises the following steps: before concrete is poured, the length of a double-layer combined pipe (1) and the length of a double-layer rubber hose joint (9) in a pipeline system are designed by field exploration and combination of a design drawing, the distance between two adjacent double-layer combined pipes (1) is 0.65-0.8 m, the distance between two adjacent upper-layer or lower-layer double-layer combined pipes (1) is 0.65-0.8 m, and the combined pipeline at the edge of the outer layer of the concrete is 0.65-0.8 m away from the edge of the concrete, so that the pipeline system installation in each layer of cooling system in a multi-layer cooling system is completed;

step two: an inner pipe (7) at one end of the pipeline system is connected with a liquid inlet of a first cooling liquid storage tank (10) through a common pipeline (13), an outer pipe (6) at the end is connected with a liquid outlet of the first cooling liquid storage tank (10) through a common pipeline (13), a cooling liquid flow control device (5) is installed on the common pipeline, the inner pipe (7) at the other end of the pipeline system is connected with a liquid outlet of a second cooling liquid storage tank (11) through a common pipeline, a cooling liquid flow control device (5) is installed on the common pipeline, and the outer pipe (6) at the end is connected with a liquid inlet of the second cooling liquid storage tank (11) through a common pipeline (13); the cooling liquid flow control device (5) is connected with the data processor (12);

step three: uniformly distributing a plurality of stress-temperature sensors (2) on the wall of an outer pipe (7) of the double-layer combined pipe (1), and pouring concrete; the data processor (12) controls the hydraulic pumps of the cooling liquid flow control device (5) at one end of the pipeline system and the other end of the pipeline system to be started, so that cooling liquid flows in the outer pipe (6) and the inner pipe (7);

step four: uniformly distributing a plurality of stress-temperature sensors (2) on the outer surface of the concrete, contacting the concrete, and connecting the stress-temperature sensors (2) on the pipe wall of the outer pipe (7) of the double-layer combined pipe (1) and the stress-temperature sensors (2) on the outer surface of the concrete with a data processor (12);

step five: after the inhibitive propylene glycol flows in a pipeline system for a set time, the stress-temperature sensor (2) can timely transmit the monitored stress and temperature data of the concrete outside the double-layer combined pipe (1) to the data processor (12), then the data processor (12) calculates and processes the collected data, and sends a command to the cooling liquid flowing device (5) to adjust the rotating speed of the hydraulic pump so as to control the flow speed and the flow rate of the inhibitive propylene glycol;

meanwhile, the data processor (12) compares the temperature of the concrete at the outer pipe (6) detected by the stress-temperature sensor with the temperature of the outer surface of the concrete, when the temperature of the concrete at the outer pipe (6) is less than the temperature difference at the outer surface of the concrete by 25 degrees, only the cooling liquid flow control device (5) connected with the outer pipe (6) is started, and when the temperature of the concrete at the outer pipe (6) is greater than or equal to 25 degrees than the temperature difference at the outer surface of the concrete, the hydraulic pumps of the cooling liquid flow control devices (5) at one end of the pipeline system and the other end of the pipeline system are started simultaneously;

step six: when the temperature difference between the stress-temperature sensor (2) on the pipe wall of the outer pipe (7) of the double-layer combined pipe (1) and the stress-temperature sensor (2) on the outer surface of the concrete does not exceed (5) DEG and lasts for (2) hours, the concrete is cooled and solidified, the hydraulic pumps of the cooling liquid flow control devices (5) at one end of the pipeline system and the other end of the pipeline system are reversed, the inhibitory propylene glycol is controlled to flow back to the first cooling liquid storage tank (10) from the inner pipe (7), and flow back to the second cooling liquid storage tank (11) from the outer pipe (6) for storage and recycling; the cooling liquid flow control device (5) and the data processor (12) at one end of the common pipeline (13), one end of the pipeline system and the other end of the pipeline system are disassembled, the pipeline system is kept in the concrete, and then the fine aggregate concrete with the proper particle size is poured into the pipeline system so as to fill the pipeline and ensure the structural strength of the concrete.

7. The method of using the mass concrete cooling device according to claim 6, wherein: after the inhibitory propylene glycol flows back to the first cooling liquid storage box (10) and the second cooling liquid storage box (11), the first cooling liquid storage box (10) and the second cooling liquid storage box (11) cool the inhibitory propylene glycol, the first cooling liquid storage box (10) and the second cooling liquid storage box (11) are provided with a temperature detector and a condensing device for detecting the temperature of the inhibitory propylene glycol flowing back into the first cooling liquid storage box (10) and the second cooling liquid storage box (11), the temperature of the inhibitory propylene glycol is compared with the outdoor temperature, when the temperature of the cooling liquid exceeds the outdoor temperature by more than 10 degrees, the condensing device is started to cool the cooling liquid, otherwise, the condensing device is not started, and natural cooling is realized through the environment.

Technical Field

The invention belongs to the technical field of engineering construction, and particularly relates to a large-volume concrete cooling device and a using method thereof.

Background

With the increasing demand of some building projects in China on large-volume concrete, the quality requirement of the large-volume concrete is particularly outstanding. After the large-volume concrete is poured, a large amount of hydration heat can be generated in the process of setting and hardening, if the heat can not be released in time, the temperature of a concrete core area is too high, the temperature difference between the inside and the outside is large, large stress is generated, concrete cracking is caused, the safe use of the structure is influenced, even the occurrence of engineering accidents is caused, great loss is brought to the life and property of people, and therefore the control of the temperature of the concrete during construction is necessary for the large-volume concrete construction. At present, the technology of embedding a condenser pipe in concrete is commonly adopted in engineering, and water is introduced to realize cooling of large-volume concrete, but from the perspective of a large amount of implementation engineering, the cooling effect is not good, the efficiency is low, and the temperature and the flow rate of cooling liquid cannot be accurately controlled.

In view of the above, the present invention provides a cooling device and a method for mass concrete, which are improved to effectively solve the problem of the temperature difference between the inside and the outside when the mass concrete is solidified and hardened.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a circulating cooling apparatus and a method of using the same, in which cooling liquid with different flow directions circulates in a pipeline system to cool concrete, a stress-temperature sensor is used to monitor the temperature and stress condition of the concrete in a core region in real time, and a cooling liquid control system is used to control the flow rate and flow velocity of the cooling liquid.

The technical scheme adopted by the invention is as follows: a large-volume concrete cooling device comprises a plurality of layers of cooling systems, a first cooling liquid storage box 10 and a second cooling liquid storage box 11 which are arranged in parallel in the vertical direction, wherein the cooling systems of all layers are identical in structure, each cooling system comprises a pipeline system, a cooling liquid regulation and control system and a data monitoring and control system, the pipeline system comprises a double-layer combined pipe 1 and a double-layer rubber hose joint 9, the double-layer combined pipe 1 comprises a middle section, the middle section comprises an inner pipe 7 and an outer pipe 6, the cooling liquid regulation and control system comprises a cooling liquid flow control device 5 and a common pipeline 13, the pipeline system is formed by arranging the double-layer combined pipes 1 in parallel, the end parts of two adjacent double-layer combined pipes 1 are connected through the double-layer rubber hose joint 9, the inner pipe 7 at one end of the pipeline system is connected with a liquid inlet of the first cooling liquid storage box 10 through the common pipeline, the outer pipe 6 at the end is connected with a liquid outlet of a first cooling liquid storage tank 10 through a common pipeline 13, a cooling liquid flow control device 5 is installed on the section of common pipeline, a hydraulic pump is arranged in the cooling liquid flow control device 5, the inner pipe 7 at the other end of the pipeline system is connected with a liquid outlet of a second cooling liquid storage tank 11 through a common pipeline, the section of common pipeline is provided with the cooling liquid flow control device 5, and the outer pipe 6 at the end is connected with a liquid inlet of the second cooling liquid storage tank 11 through a common pipeline 13; the data detection and analysis system comprises a stress-temperature sensor 2 and a data processor 12; the stress-temperature sensors 2 are uniformly distributed on the wall of the outer pipe 7 of the double-layer combined pipe 1, meanwhile, the stress-temperature sensors 2 are uniformly distributed on the outer surface of concrete and are in contact with the concrete, the stress-temperature sensors 2 and the cooling liquid flow control device 5 are connected with the data processor 12, one end of a pipeline system of each cooling system is connected with the first cooling liquid storage box 10, and the other end of the pipeline system is connected with the second cooling liquid storage box 11.

The distance between two adjacent double-layer combined pipes 1 is 0.65-0.8 m, the distance between the double-layer combined pipes 1 of the adjacent upper-layer or lower-layer cooling systems is 0.65-0.8 m, and the combined pipeline at the edge of the outer layer of the concrete is 0.65-0.8 m away from the edge of the concrete.

3. The mass concrete cooling device according to claim 2, wherein: a first supporting member 8 is arranged between the inner pipe 7 and the outer pipe 6 at equal intervals along the length direction; the double-layer rubber hose joint 9 comprises an inner-layer rubber hose 92 and an outer-layer rubber hose 91, a second supporting member 4 is arranged between the inner-layer rubber hose 92 and the outer-layer rubber hose 91 along the length direction at the equal interval distance, two ends of the outer-layer rubber hose 91 are fixedly connected with the end portions of two adjacent outer pipes 6 respectively, and the inner-layer rubber hose 92 is fixedly connected with the end portions of two adjacent inner pipes 7 respectively.

The cooling liquid is inhibitory propylene glycol.

The structure that the inner pipe 7 at one end of the pipeline system is connected with the liquid inlet of the first cooling liquid storage tank 10 through a common pipeline is as follows: the double-layer combined pipe 1 further comprises end sections, the middle sections at two ends of the pipeline system are respectively connected with one end section through a double-layer rubber hose joint 9, the end sections and the middle sections are basically the same in structure, and an inner pipe 7 of the double-layer combined pipe 1 penetrates out of the pipe wall of the outer pipe 6 at one side port; an end section inner pipe 7 at one end of the pipeline system penetrates through an outer pipe 6 and is connected with a liquid inlet of a first cooling liquid storage tank 10 through a common pipeline, and the outer pipe 6 of the end section is connected with a liquid outlet of the first cooling liquid storage tank 10 through a common pipeline 13;

the structure that the inner pipe 7 at the other end of the pipeline system is connected with the liquid outlet of the second cooling liquid storage tank 11 through a common pipeline is as follows: the inner pipe 7 at the other end of the pipeline system penetrates through the outer pipe 6 and then is connected with a liquid outlet of the second cooling liquid storage box 11 through a common pipeline, and the outer pipe 6 at the end section is connected with a liquid inlet of the second cooling liquid storage box 11 through a common pipeline 13.

The using method of the large-volume concrete cooling device comprises the following steps:

the method comprises the following steps: before concrete is poured, the length of the double-layer combined pipes 1 and the length of the double-layer rubber hose joints 9 in the pipeline system are designed by field exploration and combination of a design drawing, the distance between every two adjacent double-layer combined pipes 1 is 0.65-0.8 m, the distance between every two adjacent double-layer combined pipes 1 on the upper layer or the lower layer is 0.65-0.8 m, the combined pipeline on the outer edge of the concrete is 0.65-0.8 m away from the edge of the concrete, and the pipeline system installation in each layer of cooling system in the multi-layer cooling system is completed;

step two: an inner pipe 7 at one end of the pipeline system is connected with a liquid inlet of a first cooling liquid storage tank 10 through a common pipeline 13, an outer pipe 6 at the end is connected with a liquid outlet of the first cooling liquid storage tank 10 through a common pipeline 13, a cooling liquid flow control device 5 is installed on the common pipeline, the inner pipe 7 at the other end of the pipeline system is connected with a liquid outlet of a second cooling liquid storage tank 11 through a common pipeline, a cooling liquid flow control device 5 is installed on the common pipeline, and the outer pipe 6 at the end is connected with a liquid inlet of the second cooling liquid storage tank 11 through a common pipeline 13; the cooling liquid flow control device 5 is connected with the data processor 12;

step three: uniformly distributing a plurality of stress-temperature sensors 2 on the wall of an outer pipe 7 of the double-layer combined pipe 1, and pouring concrete; the data processor 12 controls the hydraulic pumps of the cooling liquid flow control device 5 at one end of the pipeline system and the other end of the pipeline system to be opened, so that the cooling liquid flows in the outer pipe 6 and the inner pipe 7;

step four: a plurality of stress-temperature sensors 2 are uniformly distributed on the outer surface of the concrete and are contacted with the concrete, and the stress-temperature sensors 2 on the pipe wall of the outer pipe 7 of the double-layer combined pipe 1 and the stress-temperature sensors 2 on the outer surface of the concrete are connected with a data processor 12;

step five: after the inhibitive propylene glycol flows in the pipeline system for a set time, the stress-temperature sensor 2 can timely transmit the monitored stress and temperature data of the concrete outside the double-layer combined pipe 1 to the data processor 12, then the data processor 12 calculates and processes the collected data, and sends a command to the cooling liquid flowing device 5 to adjust the rotating speed of the hydraulic pump so as to control the flow speed and the flow rate of the inhibitive propylene glycol;

meanwhile, the data processor 12 compares the temperature of the concrete at the outer pipe 6 detected by the stress-temperature sensor with the temperature of the outer surface of the concrete, when the temperature difference between the temperature of the concrete at the outer pipe 6 and the temperature of the outer surface of the concrete is less than 25 degrees, only the cooling liquid flow control device 5 connected with the outer pipe 6 is started, and when the temperature difference between the temperature of the concrete at the outer pipe 6 and the temperature of the outer surface of the concrete is more than or equal to 25 degrees, hydraulic pumps of the cooling liquid flow control devices 5 at one end of the pipeline system and the other end of the pipeline system are started simultaneously;

step six: when the temperature difference between the stress-temperature sensor 2 on the pipe wall of the outer pipe 7 of the double-layer combined pipe 1 and the temperature difference between the stress-temperature sensor 2 on the outer surface of the concrete and the environment temperature do not exceed 5 ℃ and last for 2 hours, the concrete is cooled and solidified, the hydraulic pumps of the cooling liquid flow control devices 5 at one end of the pipeline system and the other end of the pipeline system are reversely rotated, and the inhibitory propylene glycol is controlled to flow back to the first cooling liquid storage box 10 from the inner pipe 7 and flow back to the second cooling liquid storage box 11 from the outer pipe 6 for storage and recycling; the common pipeline 13, the cooling liquid flow control device 5 at one end of the pipeline system and the other end of the pipeline system and the data processor 12 are disassembled, the pipeline system is kept in concrete, and then the fine aggregate concrete with the proper grain diameter is poured into the pipeline system so as to fill the pipeline and ensure the structural strength of the concrete.

After the inhibitory propylene glycol flows back to the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11, the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11 cool the inhibitory propylene glycol, the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11 are provided with a temperature detector and a condensing device, the temperature detector and the condensing device are used for detecting the temperature of the inhibitory propylene glycol flowing back into the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11, the temperature is compared with the outdoor temperature, when the temperature of the cooling liquid exceeds the outdoor temperature by more than 10 ℃, the condensing device is started to cool the cooling liquid, otherwise, the condensing device is not started, and natural cooling is performed through the environment.

Compared with the prior art, the invention has the beneficial effects that:

1. adopt double-deck combination pipe, the temperature rose after the hydration heat that the concrete release was absorbed to the outer tube coolant liquid, the outer tube coolant liquid realizes the cooling of outer tube coolant liquid through inner pipe wall with partly heat conduction to the inner tube coolant liquid opposite with outer tube flow direction simultaneously to guarantee the heat absorption capacity of outer tube coolant liquid, improved the cooling efficiency of pipeline, improved traditional single-layer pipe, the cooling effect of coolant liquid one-way flow. And the double-layer combined pipe is matched with the cooling liquid storage box to finish the backflow of the cooling liquid, so that the cyclic utilization is realized.

2. The arrangement form of the combined pipe in the concrete can be better matched by adopting the double-layer rubber hose joint, so that the large-volume concrete is better cooled, and the efficiency is improved.

3. The stress-temperature sensor can be used for visually and accurately monitoring the stress and temperature states in the concrete, and the flow speed and flow of cooling liquid in a pipeline system can be accurately controlled by matching with the cooling liquid flow control device, so that the reasonable control on the cooling effect is realized, the concrete cooling efficiency is improved, and the better cooling effect is achieved.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is an overall assembly view of a single-layer cooling system;

FIG. 2 is a stress-temperature sensor profile;

FIG. 3 is an assembled view of a double-layer combination pipe and a double-layer rubber hose joint;

FIG. 4 is an assembled view of a double-layered combination tube and a coolant flow control device;

FIG. 5 is a view of a double-layer composite pipe construction;

FIG. 6 is a structural view at the end of a double-layer composite pipe;

FIG. 7 is a sectional view of a double-layer rubber hose joint;

reference is made to the accompanying drawings in which: 1. a double-layer combined pipe; 2. a stress-temperature sensor; 4 supporting member two; 5 a coolant flow control device; 6. an outer tube; 7. an inner tube; 8. a first support member; 9. a double-layer rubber hose joint; 10. a first coolant reservoir; 11. a second cooling liquid storage tank; 12. a data processor; 13. a common pipeline.

Detailed description of the preferred embodiments

In order to make the objects, technical solutions and feasibility of the present invention more clear and detailed, the present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific examples described below are only for illustrating the present invention and are not to be construed as limiting the present invention.

Referring to fig. 1 to 7, a mass concrete cooling device comprises a plurality of layers of cooling systems arranged along the vertical direction, a first cooling liquid storage tank 10 and a second cooling liquid storage tank 11, wherein each cooling system comprises a pipeline system, a cooling liquid regulation and control system and a data monitoring and control system, and each pipeline system comprises a double-layer combined pipe 1 and a double-layer rubber hose joint 9; the double-layer combined pipe 1 comprises end sections and a middle section; the middle section comprises an inner pipe 7, an outer pipe 6 and a first support member 8; the inner diameter of the inner pipe 7 is 30mm, and the pipe wall thickness is 3 mm; the inner diameter of the outer pipe 6 is 60mm, and the pipe wall thickness is 5 mm; the first support member is 8 mm in diameter; the inner pipe 7 is coaxially nested in the outer pipe 6 through a first supporting member 8 to form a double-layer pipeline; four supporting members I8 are uniformly arranged on the same cross section of the inner pipe 7 and the outer pipe 6 along the circumferential direction of the inner pipe 7, the inner side ends of the supporting members I8 are fixed on the outer wall of the inner pipe 7, the outer side ends of the supporting members I8 are fixed on the inner wall of the outer pipe 6, and the four supporting members I8 are arranged along the length direction of the double-layer combined pipe 1 at intervals of 0.5 meter.

The middle sections at the two ends of the pipeline system are respectively connected with an end section through a double-layer rubber hose joint 9, the end sections and the middle sections have basically the same structure, and the difference is that: the inner pipe 7 of the double-layer combined pipe 1 penetrates out of the pipe wall of the outer pipe 6 at the port of one side; after the end section inner tube 7 of pipe-line system one end wear out outer tube 6, be connected through the inlet of a common pipeline and coolant liquid reserve tank 10, the outer tube 6 of this end section is connected through the liquid outlet of a common pipeline 13 and coolant liquid reserve tank 10, and installs a coolant liquid control device 5 on this section common pipeline 13, is provided with the hydraulic pump in the coolant liquid control device 5, the inner tube 7 of the pipe-line system other end wear out and be connected through the liquid outlet of a common pipeline and No. two coolant liquid reserve tanks 11 behind outer tube 6, and install a coolant liquid control device 5 on this section common pipeline, the outer tube 6 of this end section is connected through the inlet of a common pipeline 13 and No. two coolant liquid reserve tanks 11.

The arrangement scheme of the pipeline system is as follows: the distance between the outer layer combined pipeline and the edge of the concrete is 0.65-0.8 m; the cooling liquid adopts inhibitory propylene glycol, the inhibitory propylene glycol is specially treated industrial heat transfer fluid, and the cooling liquid is characterized by low solidification temperature, high heat transfer efficiency and excellent corrosion protection performance, and can be widely used as high-temperature and low-temperature heat transfer fluid; the temperature of the inhibited propylene glycol in the outer pipe 6 in the double-layer combined pipe 1 is increased after the hydration heat released by concrete is absorbed, and on the other hand, a part of heat is conducted to the inhibited propylene glycol in the inner pipe 7 opposite to the flowing direction of the outer pipe 6 through the pipe wall of the inner pipe 7, so that the temperature of the inhibited propylene glycol in the outer pipe 6 is reduced, and the heat absorption capacity of the inhibited propylene glycol in the outer pipe 6 is ensured; the double-layer rubber hose joint 9 comprises an inner-layer rubber hose 92, an outer-layer rubber hose 91 and a second supporting member 4, the inner diameter of the inner-layer rubber hose 92 is 30mm, the inner diameter of the outer-layer rubber hose 9 is 60mm, the pipe wall of the outer-layer rubber hose is 5mm, the diameter of the first supporting member is 8 mm, the inner-layer rubber hose 92 and the outer-layer rubber hose 91 are uniformly provided with the second supporting member 4 along the circumferential direction of the inner-layer rubber hose 92 on the same cross section, the inner side end of the second supporting member 4 is fixed on the outer wall of the inner-layer rubber hose 92, the outer side end of the second supporting member is fixed on the inner wall of the outer-layer rubber hose 91, and the second supporting member 4.

The inner diameters of the inner and outer layer rubber hoses 92 and 91 are respectively larger than the inner diameters of the inner pipe 6 and the outer pipe 7 of the double-layer combined pipe 1;

the pipeline system is characterized in that a plurality of double-layer combined pipes 1 are arranged in parallel side by side, and the end parts of two adjacent double-layer combined pipes 1 are connected by adopting double-layer rubber hose joints 9, namely, an outer-layer rubber hose 91 is fixedly connected with an outer pipe 6 in an embedded manner, and an inner-layer rubber hose 92 is fixedly connected with an inner pipe 7 in an embedded manner; the pipeline system is pre-embedded in a concrete structure in a multi-layer arrangement mode; the cooling liquid regulation and control system comprises a cooling liquid flow control device 5 and a common pipeline 13; the two cooling liquid flow control devices 5 are arranged, one is arranged at the inlet of an outer pipe 6 of the double-layer combined pipe 1, and the other is arranged at the inlet of an inner pipe 7 of the double-layer combined pipe 1 and used for controlling the flow and the flow speed of the inhibitory propylene glycol in a pipeline system; the coolant flow control device 5 can adjust the flow rate according to the total length of the pipeline system, and can control the flow rate of the coolant to be: 1.2-1.5 m/s of outer pipe and 1.5-2.0 m/s of inner pipe; the inlet of the outer pipe 6 refers to the head end of the pipeline system, and the inlet of the inner pipe 7 refers to the tail end of the pipeline system; the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11 are used for recovering and storing inhibitory propylene glycol, and the cooling liquid flow control device 5 and the pipeline system are respectively connected through a common pipeline 13; the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11 are provided with a temperature detector and a condensing device, and are used for detecting the temperature of the inhibitory propylene glycol flowing back into the first cooling liquid storage tank 10 and the second cooling liquid storage tank 11, comparing the detected temperature with the outdoor temperature, starting the condensing device to cool the cooling liquid when the temperature of the cooling liquid exceeds the outdoor temperature by more than 10 ℃, otherwise, not starting the condensing device, and realizing energy conservation and environmental protection through natural cooling of the environment; the data detection and analysis system comprises a stress-temperature sensor 2 and a data processor 12; the stress-temperature sensors 2 are uniformly distributed on the wall of the outer pipe 7 of the double-layer combined pipe 1, the stress-temperature sensors 2 are distributed on the outer surface of the concrete and are in contact with the concrete, and the stress-temperature sensors 2 are connected with the data processor 12 and are used for monitoring the stress and temperature change of the concrete and transmitting data to the data processor 12; the data processor 12 is simultaneously connected with the cooling liquid flow control device 5 and is installed on the cooling liquid flow control device 5; the data processor 12 compares the temperature of the concrete at the outer pipe 6 detected by the received stress-temperature sensor with the temperature of the outer surface of the concrete, when the temperature difference of the concrete at the outer pipe 6 is less than 25 degrees compared with the temperature difference of the concrete at the outer surface, only the cooling liquid flow control device 5 connected with the outer pipe 6 is started, and when the temperature difference of the concrete at the outer pipe 6 is more than or equal to 25 degrees compared with the temperature difference of the concrete at the outer surface, the cooling liquid flow control device 5 connected with the outer pipe 6 and the inner pipe 7 is simultaneously started, so that energy conservation and environmental protection are realized while the condensation effect is met.

The use method of the large-volume concrete cooling device comprises the following steps:

the method comprises the following steps: before concrete is poured, the length of the double-layer combined pipes 1 and the length of the double-layer rubber hose joints 9 in the pipeline system are designed by field exploration and combination of a design drawing, the distance between every two adjacent double-layer combined pipes 1 is 0.65-0.8 m, the distance between every two adjacent double-layer combined pipes 1 on the upper layer or the lower layer is 0.65-0.8 m, the combined pipeline on the outer edge of the concrete is 0.65-0.8 m away from the edge of the concrete, and the pipeline system installation in each layer of cooling system in the multi-layer cooling system is completed;

step two: an inner pipe 7 at one end of the pipeline system is connected with a liquid inlet of a first cooling liquid storage tank 10 through a common pipeline 13, an outer pipe 6 at the end is connected with a liquid outlet of the first cooling liquid storage tank 10 through a common pipeline 13, a cooling liquid flow control device 5 is installed on the common pipeline, the inner pipe 7 at the other end of the pipeline system is connected with a liquid outlet of a second cooling liquid storage tank 11 through a common pipeline, a cooling liquid flow control device 5 is installed on the common pipeline, and the outer pipe 6 at the end is connected with a liquid inlet of the second cooling liquid storage tank 11 through a common pipeline 13; the cooling liquid flow control device 5 is connected with the data processor 12;

step three: uniformly distributing a plurality of stress-temperature sensors 2 on the wall of an outer pipe 7 of the double-layer combined pipe 1, and pouring concrete; the data processor 12 controls the hydraulic pumps of the cooling liquid flow control device 5 at one end of the pipeline system and the other end of the pipeline system to be opened, so that the cooling liquid flows in the outer pipe 6 and the inner pipe 7;

step four: a plurality of stress-temperature sensors 2 are uniformly distributed on the outer surface of the concrete and are contacted with the concrete, and the stress-temperature sensors 2 on the pipe wall of the outer pipe 7 of the double-layer combined pipe 1 and the stress-temperature sensors 2 on the outer surface of the concrete are connected with a data processor 12;

step five: after the inhibitive propylene glycol flows in the pipeline system for a set time, the stress-temperature sensor 2 can timely transmit the monitored stress and temperature data of the concrete outside the double-layer combined pipe 1 to the data processor 12, then the data processor 12 calculates and processes the collected data, and sends a command to the cooling liquid flowing device 5 to adjust the rotating speed of the hydraulic pump so as to control the flow speed and the flow rate of the inhibitive propylene glycol;

meanwhile, the data processor 12 compares the temperature of the concrete at the outer pipe 6 detected by the stress-temperature sensor with the temperature of the outer surface of the concrete, when the temperature difference between the temperature of the concrete at the outer pipe 6 and the temperature of the outer surface of the concrete is less than 25 degrees, only the cooling liquid flow control device 5 connected with the outer pipe 6 is started, and when the temperature difference between the temperature of the concrete at the outer pipe 6 and the temperature of the outer surface of the concrete is more than or equal to 25 degrees, hydraulic pumps of the cooling liquid flow control devices 5 at one end of the pipeline system and the other end of the pipeline system are started simultaneously;

step six: when the temperature difference between the stress-temperature sensor 2 on the pipe wall of the outer pipe 7 of the double-layer combined pipe 1 and the temperature difference between the stress-temperature sensor 2 on the outer surface of the concrete and the environment temperature do not exceed 5 ℃ and last for 2 hours, the concrete is cooled and solidified, the hydraulic pumps of the cooling liquid flow control devices 5 at one end of the pipeline system and the other end of the pipeline system are reversely rotated, and the inhibitory propylene glycol is controlled to flow back to the first cooling liquid storage box 10 from the inner pipe 7 and flow back to the second cooling liquid storage box 11 from the outer pipe 6 for storage and recycling; the common pipeline 13, the cooling liquid flow control device 5 at one end of the pipeline system and the other end of the pipeline system and the data processor 12 are disassembled, the pipeline system is kept in concrete, and then the fine aggregate concrete with the proper grain diameter is poured into the pipeline system so as to fill the pipeline and ensure the structural strength of the concrete.