CN112506253B - Intelligent temperature control system of large-volume concrete structure - Google Patents
Intelligent temperature control system of large-volume concrete structure Download PDFInfo
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- CN112506253B CN112506253B CN202011506175.1A CN202011506175A CN112506253B CN 112506253 B CN112506253 B CN 112506253B CN 202011506175 A CN202011506175 A CN 202011506175A CN 112506253 B CN112506253 B CN 112506253B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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Abstract
The invention provides an intelligent temperature control system for a large-volume concrete structure. This intelligence temperature control system includes: a water storage tank, a water separator, and at least one cooling circuit assembly; a water pump is arranged in the water storage tank; each cooling circuit assembly includes: the cooling water system comprises a first water return pipe, a second water return pipe, a third water return pipe, a fourth water return pipe, a cooling water loop and a plurality of electromagnetic switch valves; a pressure sensor is arranged at the joint of the first water delivery pipe and the water separator, and a pressure release valve is arranged at the joint of the second water delivery pipe and the water separator; the pressure sensor is used for measuring the pressure value in the water separator; and the pressure relief valve is used for adjusting the pressure in the water separator. The invention can effectively and reasonably regulate and control the temperature field in the monitored concrete structure.
Description
Technical Field
The application relates to the technical field of concrete construction, in particular to an intelligent temperature control system for a large-volume concrete structure.
Background
During the construction process of a large-volume concrete structure, after concrete is poured, hydration reaction between water and a cementing material generates a large amount of hydration heat, so that the temperature in the concrete is increased, and when the temperature is increased to a peak value, the heat emitted by the structure to the surrounding environment is greater than the heat generated by the hydration reaction, and the temperature enters a descending stage. In the temperature rising and reducing processes, an uneven temperature field can be generated in the concrete, the concrete with the lower temperature at the outer side and the concrete with the higher temperature at the inner side are mutually constrained, and temperature stress is generated due to inconsistent thermal expansion and contraction degrees between the concrete and the concrete. When the temperature stress exceeds the ultimate tensile strength of the concrete, the concrete will crack, and the existence of the crack of the concrete will cause the reduction of the bearing capacity, waterproof performance and durability of the mass concrete, and the structural safety is affected.
In the prior art, the commonly used temperature control method is as follows: water pipes are buried in the large-volume concrete structure to be poured, cooling water is conveyed to the water pipes to cool, and heat is brought out of the concrete structure by utilizing the flowing of the water so as to reduce the temperature difference between the inside and the outside of the concrete and the temperature difference between layers. However, in the above prior art, it is generally difficult to perform real-time adjustment according to the temperature condition inside the concrete structure, so that the problems of time and labor consuming and poor control precision of the control process generally exist, and it is difficult to achieve the required temperature control effect.
Disclosure of Invention
In view of this, the invention provides an intelligent temperature control system for a large-volume concrete structure, so that the temperature field in the monitored concrete structure can be effectively and reasonably regulated.
The technical scheme of the invention is realized as follows:
an intelligent temperature control system for a bulk concrete structure, the intelligent temperature control system comprising: a water storage tank, a water separator, and at least one cooling circuit assembly;
a water pump is arranged in the water storage tank;
the first end of the water separator is connected with the water storage tank through a first water delivery pipe; the second end of the water separator is connected with the water storage tank through a second water delivery pipe;
each cooling circuit assembly includes: the cooling water system comprises a first water return pipe, a second water return pipe, a third water return pipe, a fourth water return pipe and a cooling water loop;
the first end of the first water return pipe is connected with the first end of the cooling water loop; the second end of the first water return pipe is connected with the water separator;
the first end of the second water return pipe is connected with the second end of the cooling water loop; the second end of the second water return pipe is connected with the water storage tank;
the first end of the third water return pipe is connected with the middle part of the first water return pipe; the second end of the third water return pipe is connected with the water storage tank;
the first end of the fourth water return pipe is connected with the middle part of the second water return pipe; the second end of the fourth water return pipe is connected with the water separator;
a first electromagnetic switch valve is arranged between the first end of the third water return pipe and the second end of the first water return pipe;
a second electromagnetic switch valve is arranged between the first end and the second end of the third water return pipe;
a third electromagnetic switch valve is arranged between the first end of the fourth water return pipe and the first end of the second water return pipe;
a fourth electromagnetic switch valve is arranged between the first end of the fourth water return pipe and the second end of the second water return pipe;
a fifth electromagnetic switch valve is arranged between the first end and the second end of the fourth water return pipe;
a pressure sensor is arranged at the joint of the first water delivery pipe and the water separator, and a pressure release valve is arranged at the joint of the second water delivery pipe and the water separator;
the pressure sensor is used for measuring the pressure value in the water separator;
and the pressure relief valve is used for adjusting the pressure in the water separator.
Preferably, the intelligent temperature control system further comprises: a control device;
the control device is respectively electrically connected with the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve, the fourth electromagnetic switch valve and the fifth electromagnetic switch valve in each cooling circuit assembly and is used for controlling the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve, the fourth electromagnetic switch valve and the fifth electromagnetic switch valve to be opened or closed.
Preferably, the cooling circuit assembly further comprises: a flow meter and an electromagnetic regulating valve;
the flowmeter and the electromagnetic regulating valve are arranged between the first end of the third water return pipe and the first end of the first water return pipe;
the flow meter is used for measuring the flow of the cooling water in the cooling circuit assembly;
and the electromagnetic regulating valve is used for regulating the flow of the cooling water in the cooling loop assembly.
Preferably, the flowmeter and the electromagnetic regulating valve are electrically connected with the control device;
the control device receives a flow value measured by the flowmeter and controls the opening of the electromagnetic regulating valve according to the flow value and a preset first flow threshold value and a preset second flow threshold value.
Preferably, the cooling circuit assembly further comprises: the temperature control system comprises an electromagnetic regulating valve, a first temperature sensor and a second temperature sensor;
the electromagnetic regulating valve is arranged between the first end of the third water return pipe and the first end of the first water return pipe;
the first temperature sensor is arranged at the first end of the first water return pipe;
the second temperature sensor is arranged at the first end of the second water return pipe;
the first temperature sensor and the second temperature sensor are used for measuring the temperature of the cooling water flowing through the positions of the first temperature sensor and the second temperature sensor;
and the electromagnetic regulating valve is used for regulating the flow of the cooling water in the cooling loop assembly.
Preferably, the electromagnetic regulating valve, the first temperature sensor and the second temperature sensor are electrically connected with the control device;
the control device receives temperature values measured by the first temperature sensor and the second temperature sensor, and controls the opening of the electromagnetic regulating valve according to the temperature values and the preset first temperature threshold value and second temperature threshold value.
Preferably, the intelligent temperature control system further comprises: an alarm;
the control device is respectively and electrically connected with the electromagnetic regulating valve, the first temperature sensor, the second temperature sensor and the alarm;
the first temperature sensor and the second temperature sensor transmit the measured temperature values to the control device;
when the temperature difference between the temperatures measured by the first temperature sensor and the second temperature sensor is greater than a preset third temperature threshold value, the control device sends an alarm instruction to an alarm;
and the alarm sends out an alarm signal according to the alarm instruction.
Preferably, the intelligent temperature control system further comprises: a third temperature sensor, a temperature controller and at least one temperature acquisition module;
the third temperature sensor and the temperature controller are arranged in the water storage tank;
the third temperature sensor is used for measuring the temperature value in the water storage tank;
the temperature controller is used for heating or cooling water in the water storage tank;
the temperature acquisition module is arranged in a concrete structure to be monitored, in which a cooling water loop in the cooling loop assembly is positioned;
the temperature acquisition module comprises a plurality of temperature acquisition units; the plurality of temperature acquisition units are uniformly arranged in the concrete structure to be monitored in a preset array form.
Preferably, the third temperature sensor, the temperature controller and each temperature acquisition unit are electrically connected with the control device;
the third temperature sensor and each temperature acquisition unit transmit the measured temperature value to the control device;
when the difference value between the temperature value measured by any one temperature acquisition unit and the temperature value measured by the third temperature sensor is greater than or equal to a preset fourth temperature threshold value, the control device sends a starting instruction to the temperature controller and sends an alarm instruction to the alarm; otherwise, the control device sends a closing instruction to the temperature controller;
the temperature controller is started according to the starting instruction to heat or cool water in the water storage tank; the temperature controller is closed according to a closing instruction;
and the alarm sends out an alarm signal according to the alarm instruction.
Preferably, the temperature acquisition unit arranged on the surface of the concrete structure to be monitored in each temperature acquisition module is used as a surface temperature acquisition unit;
when the temperature value measured in the current measurement period by the surface temperature acquisition unit in any one temperature acquisition module is compared with the temperature value measured in the last measurement period by the surface temperature acquisition unit, and the descending speed is greater than or equal to the preset cooling rate, the control device sends an alarm instruction to the alarm;
and the alarm sends out an alarm signal according to the alarm instruction.
As can be seen from the above, in the intelligent temperature control system for a mass concrete structure according to the present invention, since the water storage tank, the water separator, and the at least one cooling circuit component are provided, and the cooling water circuit and the plurality of electromagnetic switching valves are provided in each cooling circuit component, water in each cooling circuit component can flow in a preset direction by controlling the opening or closing of the plurality of electromagnetic switching valves, so that the temperature field in each monitored concrete structure can be reasonably controlled by the above intelligent temperature control system for a mass concrete structure.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent temperature control system for a mass concrete structure according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an intelligent temperature control system for a mass concrete structure according to another embodiment of the present invention.
Detailed Description
In order to make the technical scheme and advantages of the invention more apparent, the invention is further described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an intelligent temperature control system for a mass concrete structure according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of an intelligent temperature control system for a mass concrete structure according to another embodiment of the present invention (the cooling water circuits are not shown in fig. 2).
As shown in fig. 1 to 2, the intelligent temperature control system for a mass concrete structure in the embodiment of the present invention includes: a water storage tank 11, a water separator 12 and at least one cooling circuit assembly 13;
a water pump (not shown in the figure) is arranged in the water storage tank 11;
the first end of the water separator 12 is connected with the water storage tank 11 through a first water delivery pipe 21; the second end of the water separator 12 is connected with the water storage tank 11 through a second water pipe 22;
each cooling circuit assembly 13 comprises: a first water return pipe 31, a second water return pipe 32, a third water return pipe 33, a fourth water return pipe 34, and a cooling water circuit 35;
a first end of the first return pipe 31 is connected with a first end of a cooling water loop 35; a second end of the first return pipe 31 is connected with the water separator 12;
a first end of the second water return pipe 32 is connected with a second end of the cooling water loop 35; a second end of the second water return pipe 32 is connected with the water storage tank 11;
a first end of the third water return pipe 33 is connected with the middle part of the first water return pipe 31; a second end of the third water return pipe 33 is connected with the water storage tank 11;
a first end of the fourth water return pipe 34 is connected with the middle part of the second water return pipe 32; a second end of the fourth return pipe 34 is connected to the water separator 12;
a first electromagnetic switch valve 41 is arranged between the first end of the third water return pipe 33 and the second end of the first water return pipe 31;
a second electromagnetic switch valve 42 is arranged between the first end and the second end of the third water return pipe 33;
a third electromagnetic switch valve 43 is arranged between the first end of the fourth water return pipe 34 and the first end of the second water return pipe 32;
a fourth electromagnetic switch valve 44 is arranged between the first end of the fourth water return pipe 34 and the second end of the second water return pipe 32;
a fifth electromagnetic switch valve 45 is arranged between the first end and the second end of the fourth water return pipe 34.
In the intelligent temperature control system of the large-volume concrete structure, a water storage tank, a water separator and at least one cooling loop component are arranged. Wherein the cooling water circuits in the cooling circuit assemblies can be respectively arranged in the concrete structures to be monitored, so that the number of the cooling circuit assemblies can be preset according to the requirements of practical application situations.
For example, when a building is constructed, the intelligent temperature control system with the mass concrete structure can be used for controlling the temperature of the concrete structure of the building. In this case, the number of cooling circuit modules may be set according to the number of floors of the building. For example, a corresponding cooling circuit module may be provided for each floor of the building, and the cooling water circuits in the cooling circuit modules are laid in the concrete structure of the floor (for example, 6 cooling circuit modules are provided in fig. 2, so that the cooling water circuits of the 6 cooling circuit modules may be respectively provided in the concrete floors of 6 floors), so that the temperature fields of the concrete structures of the floors may be respectively and reasonably regulated by the cooling circuit modules.
In addition, in the intelligent temperature control system of the mass concrete structure, a plurality of electromagnetic switch valves are further arranged in the cooling circuit components, so that water in each cooling circuit component can flow in a preset direction by controlling the opening or closing of the plurality of electromagnetic switch valves.
For example, in a preferred embodiment of the present invention, when the first electromagnetic opening/closing valve 41, the third electromagnetic opening/closing valve 43, and the fourth electromagnetic opening/closing valve 44 are in the open state, and the second electromagnetic opening/closing valve 42 and the fifth electromagnetic opening/closing valve 45 are in the closed state, the cooling water flows out from the C port of the water separator 12, into the first return water pipe 31, through the first electromagnetic opening/closing valve 41, into the first end of the cooling water circuit 35, out from the second end of the cooling water circuit 35, into the second return water pipe 32, through the third electromagnetic opening/closing valve 43 and the fourth electromagnetic opening/closing valve 44, and finally back into the water storage tank 11 through the a port of the water storage tank 11. Therefore, the cooling water flows out from the port C of the water separator 12 and flows back into the water storage tank 11 from the port a of the water storage tank 11.
Similarly, as an example, in another preferred embodiment of the present invention, when the first electromagnetic opening/closing valve 41, the third electromagnetic opening/closing valve 43, and the fourth electromagnetic opening/closing valve 44 are in the open state, and the second electromagnetic opening/closing valve 42 and the fifth electromagnetic opening/closing valve 45 are in the closed state, the cooling water may also flow out from the a port of the water storage tank 11 and flow back into the water separator 12 from the C port of the water separator 12.
For another example, in another preferred embodiment of the present invention, when the second electromagnetic switch valve 42, the third electromagnetic switch valve 43 and the fifth electromagnetic switch valve 45 are in the open state, and the first electromagnetic switch valve 41 and the fourth electromagnetic switch valve 44 are in the closed state, the cooling water flows out from the D port of the water separator 12, enters the fourth water return pipe 34, flows into the second water return pipe 32 through the fifth electromagnetic switch valve 45, then flows into the second end of the cooling water circuit 35, flows out from the first end of the cooling water circuit 35, enters the first water return pipe 31, enters the third water return pipe 33, passes through the second electromagnetic switch valve 42, and finally flows back into the water storage tank 11 through the B port of the water storage tank 11. Therefore, the cooling water flows out from the D port of the water separator 12 and flows back into the water storage tank 11 from the B port of the water storage tank 11.
Similarly, as an example, in another preferred embodiment of the present invention, when the second, third and fifth electromagnetic opening/ closing valves 42, 43 and 45 are in the open state and the first and fourth electromagnetic opening/ closing valves 41 and 44 are in the closed state, the cooling water may also flow out from the B port of the water storage tank 11 and flow back into the water separator 12 from the D port of the water separator 12.
Therefore, it can be seen that the water in each cooling circuit component can flow in a preset direction by controlling the opening or closing of the plurality of electromagnetic switching valves.
For example, in a preferred embodiment of the present invention, at a predetermined time, the first electromagnetic switch valve 41, the third electromagnetic switch valve 43 and the fourth electromagnetic switch valve 44 are opened, and the second electromagnetic switch valve 42 and the fifth electromagnetic switch valve 45 are closed, so that the cooling water in the cooling circuit assembly flows out from the port C of the water separator 12 and flows back to the water storage tank 11 from the port a of the water storage tank 11, i.e., flows out from the port a; alternatively, the cooling water is made to flow out from the port a of the water storage tank 11 and flow back into the water separator 12 from the port C of the water separator 12, i.e., the port a out and the port C in.
In addition, after a preset time period (for example, 24 hours) elapses, the second electromagnetic switch valve 42, the third electromagnetic switch valve 43, and the fifth electromagnetic switch valve 45 may be opened, and the first electromagnetic switch valve 41 and the fourth electromagnetic switch valve 44 may be closed, so that the cooling water may flow out from the D port of the water separator 12 and flow back to the water storage tank 11 from the B port of the water storage tank 11, that is, D flows out and B flows in; or the cooling water flows out from the port B of the water storage tank 11 and flows back into the water separator 12 from the port D of the water separator 12, namely, flows out from the port B and flows into the port D.
When cooling a newly cast concrete structure, if the flow direction of the cooling water is kept in the same flow direction all the time, the temperature of the concrete at the outlet end is higher than that of the concrete at the inlet end after the cooling process is finished, so that the temperature distribution in the newly cast concrete structure is uneven and additional temperature stress is generated. Through the operation, the flowing direction of the cooling water in the cooling loop assembly can be periodically changed, so that the temperature distribution in the concrete structure to be monitored is uniform, and the crack of the concrete structure caused by the temperature difference is avoided.
In addition, as an example, in a preferred embodiment of the present invention, the intelligent temperature control system for a mass concrete structure further includes: a control device;
the control device is electrically connected with the first electromagnetic switch valve 41, the second electromagnetic switch valve 42, the third electromagnetic switch valve 43, the fourth electromagnetic switch valve 44 and the fifth electromagnetic switch valve 45 in each cooling circuit component respectively, and is used for controlling the first electromagnetic switch valve 41, the second electromagnetic switch valve 42, the third electromagnetic switch valve 43, the fourth electromagnetic switch valve 44 and the fifth electromagnetic switch valve 45 to be opened or closed.
In addition, as an example, in a preferred embodiment of the present invention, the cooling circuit assembly may further include: a flow meter 51 and an electromagnetic regulating valve 52;
the flow meter 51 and the electromagnetic regulating valve 52 are provided between the first end of the third water return pipe 33 and the first end of the first water return pipe 31;
the flow meter 51 is used for measuring the flow rate of the cooling water in the cooling circuit assembly;
the electromagnetic regulating valve 52 is used for regulating the flow of the cooling water in the cooling circuit assembly.
Therefore, after the flow meter 51 and the electromagnetic adjusting valve 52 are provided, the electromagnetic adjusting valve 52 is adjusted based on the measurement result of the flow meter 51, so that the flow rate of the cooling water in the cooling circuit assembly can be controlled.
For example, in a preferred embodiment of the present invention, when the flow rate of the cooling water measured by the flow meter 51 is greater than or equal to a preset first flow rate threshold (e.g., 1.0 m/s), the opening degree of the electromagnetic adjusting valve 52 may be decreased to decrease the flow rate of the cooling water; when the flow rate of the cooling water measured by the flow meter 51 is less than or equal to a preset second flow rate threshold value (for example, 0.6 m/s), the opening degree of the electromagnetic adjusting valve 52 may be increased to increase the flow rate of the cooling water. Therefore, the flow rate of the cooling water can be controlled to be 0.6 to 1.0 m/s by the flow meter 51 and the electromagnetic control valve 52.
In addition, in the technical scheme of the invention, when a control device is arranged in the intelligent temperature control system of the large-volume concrete structure, the flow meter 51 and the electromagnetic regulating valve 52 can be electrically connected with the control device; the control device can receive the flow value measured by the flowmeter 51 and control the opening degree of the electromagnetic regulating valve 52 according to the flow value and the preset first flow threshold value and second flow threshold value, so that the flow or flow speed of the cooling water can be automatically controlled.
In addition, as an example, in another preferred embodiment of the present invention, the cooling circuit assembly may further include: the electromagnetic adjusting valve 52, the first temperature sensor, and the second temperature sensor;
the electromagnetic regulating valve 52 is arranged between the first end of the third water return pipe 33 and the first end of the first water return pipe 31;
the first temperature sensor is arranged at a first end of the first water return pipe 31;
the second temperature sensor is arranged at a first end of the second water return pipe 32;
the first temperature sensor and the second temperature sensor are used for measuring the temperature of the cooling water flowing through the positions of the first temperature sensor and the second temperature sensor;
the electromagnetic regulating valve 52 is used for regulating the flow of the cooling water in the cooling circuit assembly.
In the above preferred embodiment, since two temperature sensors are respectively disposed at two ends of the cooling water loop 35, the temperatures of the water inlet and the water outlet of the cooling water loop 35 can be respectively measured. When the temperature difference between the water inlet and the water outlet is less than or equal to the preset first temperature threshold, the flow rate in the cooling water loop 35 is over-large, so that the opening degree of the electromagnetic regulating valve 52 can be reduced to reduce the flow rate of the cooling water; when the temperature difference between the water inlet and the water outlet is greater than or equal to the preset second temperature threshold, it indicates that the flow rate in the cooling water circuit 35 is too small, so the opening degree of the electromagnetic regulating valve 52 can be increased to increase the flow rate of the cooling water.
In addition, in the technical scheme of the invention, when a control device is arranged in the intelligent temperature control system of the large-volume concrete structure, the electromagnetic regulating valve 52, the first temperature sensor and the second temperature sensor can be electrically connected with the control device; the control device can receive temperature values measured by the first temperature sensor and the second temperature sensor, and control the opening degree of the electromagnetic regulating valve 52 according to the temperature values and the preset first temperature threshold value and second temperature threshold value, so that the flow of the cooling water can be automatically controlled.
In addition, in the technical scheme of the invention, when the temperature difference between the water inlet and the water outlet of the cooling water loop 35 is too large, an alarm can be given.
For example, in another preferred embodiment of the present invention, the intelligent temperature control system for a mass concrete structure may further include: an alarm;
the control device is respectively and electrically connected with the electromagnetic regulating valve 52, the first temperature sensor, the second temperature sensor and the alarm;
the first temperature sensor and the second temperature sensor transmit the measured temperature values to the control device;
when the temperature difference between the water inlet and the water outlet of the cooling water loop 35 (i.e. between the temperatures measured by the first temperature sensor and the second temperature sensor) is greater than a preset third temperature threshold (e.g. 4 ℃ or 6 ℃), the control device sends an alarm instruction to an alarm;
the alarm emits an alarm signal (e.g., an electrical signal, a light signal, and/or a sound signal for alarm) according to the alarm command.
In addition, as an example, in a preferred embodiment of the present invention, a pressure sensor 61 is further disposed at a connection position of the first water pipe 21 and the water separator 12, and a pressure relief valve 62 is further disposed at a connection position of the second water pipe 22 and the water separator 12;
the pressure sensor 61 is used for measuring the pressure value in the water separator 12;
the pressure relief valve 62 is used for adjusting the pressure in the water separator 12.
For example, when the pressure value measured by the pressure sensor 61 is greater than or equal to a preset pressure threshold, the pressure relief valve 62 may be opened to reduce the pressure in the water separator 12; when the pressure value measured by the pressure sensor 61 is smaller than the preset pressure threshold, the pressure relief valve 62 is closed.
Therefore, the pressure in the water separator 12 can be controlled accordingly by the pressure sensor 61 and the relief valve 62 described above.
In addition, in the technical scheme of the invention, when a control device is arranged in the intelligent temperature control system of the large-volume concrete structure, the pressure sensor 61 and the pressure relief valve 62 can be electrically connected with the control device; the control device can receive the pressure value measured by the pressure sensor 61, and control the opening or closing of the pressure relief valve 62 according to the pressure value and a preset pressure threshold value, so that the pressure in the water separator 12 can be automatically controlled correspondingly.
In addition, as an example, in a preferred embodiment of the present invention, the intelligent temperature control system for a mass concrete structure further includes: a third temperature sensor, a temperature controller and at least one temperature acquisition module;
the third temperature sensor and the temperature controller are arranged in the water storage tank 11;
the third temperature sensor is used for measuring the temperature value in the water storage tank 11;
the temperature controller is used for heating or cooling the water in the water storage tank 11;
the temperature acquisition module is arranged in a concrete structure to be monitored, in which a cooling water loop 35 in the cooling loop assembly is positioned;
the temperature acquisition module comprises a plurality of temperature acquisition units; the plurality of temperature acquisition units are uniformly arranged in the concrete structure to be monitored in a preset array form.
In the technical scheme of the invention, besides the third temperature sensor is arranged in the water storage tank, a temperature acquisition module can be correspondingly arranged for each cooling circuit component. For example, if there are N cooling circuit assemblies, N temperature acquisition modules may be correspondingly provided. In addition, a corresponding array form can be preset according to the requirement of the practical application condition, and according to the array form, the plurality of temperature acquisition units in the temperature acquisition module are uniformly arranged in the concrete structure to be monitored, in which the cooling loop assembly is positioned.
For example, in a preferred embodiment of the present invention, if there are 8 floors of a building to be monitored, there may be one temperature acquisition module for each floor, and there may be 8 temperature acquisition modules, and there may be 10 temperature sensors (i.e., temperature acquisition units) in each temperature acquisition module, so that there are 10 temperature sensors in each floor.
Therefore, the temperature in the water storage tank can be measured by the third temperature sensor in the water storage tank, and the temperature of each concrete structure to be monitored can be measured by each temperature acquisition unit in each temperature acquisition module.
Therefore, when the difference between the temperature value measured by any one of the temperature acquisition units and the temperature value measured by the third temperature sensor is greater than or equal to a preset fourth temperature threshold (for example, 25 ℃), the temperature controller in the water storage tank 11 is turned on to heat the water in the water storage tank 11, and an alarm is given.
In addition, in another preferred embodiment of the present invention, the temperature collection unit disposed on the surface of the concrete structure to be monitored in the temperature collection module may be referred to as a surface temperature collection unit, and other temperature collection units not disposed on the surface of the concrete structure to be monitored (i.e., disposed inside the concrete structure to be monitored) may be referred to as internal temperature collection units. In the same temperature acquisition module, when the difference value between the temperature values measured by any one of the internal temperature acquisition units and any one of the surface temperature acquisition units is greater than or equal to a preset fifth temperature threshold value (for example, 25 ℃), an audible and visual alarm can be performed, and an instruction for strengthening heat preservation measures can be further sent to a preset responsible person.
For example, in another preferred embodiment of the present invention, the third temperature sensor, the thermostat and each temperature collecting unit are electrically connected to the control device;
the third temperature sensor and each temperature acquisition unit transmit the measured temperature value to the control device;
when the difference value between the temperature value measured by any one temperature acquisition unit and the temperature value measured by the third temperature sensor is greater than or equal to a preset fourth temperature threshold value, the control device sends a starting instruction to the temperature controller and sends an alarm instruction to the alarm; otherwise, the control device sends a closing instruction to the temperature controller;
the temperature controller is started according to the starting instruction to heat or cool the water in the water storage tank 11; the temperature controller is closed according to a closing instruction;
the alarm emits an alarm signal (e.g., an electrical signal, a light signal, and/or a sound signal for alarming) according to the alarm instruction.
In addition, further, when the temperature controller is closed, the alarm outputs green light to indicate that all the parts are normal; when the temperature controller is started, the alarm outputs red light or further outputs other alarm signals to remind workers to carry out corresponding treatment on abnormal conditions as soon as possible.
In addition, in the technical scheme of the invention, each temperature acquisition unit in each temperature acquisition module can perform periodic temperature acquisition according to a preset measurement period. Then, the temperature value measured by the surface temperature acquisition unit positioned on the surface of the concrete structure to be monitored can be compared with the temperature value measured in the last measurement period, and if the dropping speed of the temperature exceeds a certain value, sound and light alarm can be carried out.
For example, in a preferred embodiment of the present invention, a temperature collection unit provided on the surface of the concrete structure to be monitored in each temperature collection module is taken as a surface temperature collection unit; when the temperature value measured in the current measurement period by the surface temperature acquisition unit in any one temperature acquisition module is compared with the temperature value measured in the last measurement period by the surface temperature acquisition unit, and the descending speed is greater than or equal to the preset cooling rate, the control device sends an alarm instruction to the alarm; the alarm emits an alarm signal (e.g., an electrical signal, a light signal, and/or a sound signal for alarming) according to the alarm instruction.
In the technical scheme of the invention, the size of the cooling rate and the length of the measurement period can be preset according to the requirements of practical application conditions.
For example, in a preferred embodiment of the present invention, the cooling rate may be 2 ℃/d (degrees/day), or other suitable cooling rate values.
For example, in a preferred embodiment of the present invention, the measurement period may be 2 hours, 4 hours, 8 hours, 12 hours, or 1 day, as examples.
In addition, during actual construction, the mold entering temperature of concrete is generally not more than 30 ℃, the late stage hydration heat temperature is less than 50 ℃, and the highest temperature is not more than 80 ℃.
Therefore, in the technical scheme of the invention, the concrete mold-entering temperature can be monitored by the intelligent temperature control system of the mass concrete structure.
For example, in a preferred embodiment of the present invention, when concrete is poured into a mold, when a temperature value measured by any one of the temperature acquisition units is less than or equal to a preset sixth temperature threshold value, or greater than or equal to a preset seventh temperature threshold value, the control device sends an alarm instruction to an alarm; the alarm emits an alarm signal (e.g., an electrical signal, a light signal, and/or a sound signal for alarm) according to the alarm command.
For example, in a preferred embodiment of the present invention, the sixth temperature threshold may be 30 ℃ and the seventh temperature threshold may be 80 ℃.
In summary, in the technical solution of the present invention, because the water storage tank, the water separator, and the at least one cooling circuit component are provided, and each cooling circuit component is provided with the cooling water circuit and the plurality of electromagnetic switch valves, which can be disposed in the concrete structure to be monitored, water in each cooling circuit component can flow in a preset direction by controlling the opening or closing of the plurality of electromagnetic switch valves, so that the temperature field in each monitored concrete structure can be reasonably regulated and controlled by the above-mentioned intelligent temperature control system for a mass concrete structure.
In addition, the flow or flow velocity of the cooling water in each cooling loop assembly can be controlled according to the requirement of actual conditions, and the temperature difference between the water inlet and the water outlet of each cooling water loop can be controlled; in addition, corresponding alarm can be performed according to various preset alarm conditions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. An intelligent temperature control system for a mass concrete structure, the intelligent temperature control system comprising: the system comprises a water storage tank, a water separator, a control device and at least one cooling loop component;
a water pump is arranged in the water storage tank;
the first end of the water separator is connected with the water storage tank through a first water delivery pipe; the second end of the water separator is connected with the water storage tank through a second water delivery pipe;
each cooling circuit assembly includes: the cooling water system comprises a first water return pipe, a second water return pipe, a third water return pipe, a fourth water return pipe and a cooling water loop;
the first end of the first water return pipe is connected with the first end of the cooling water loop; the second end of the first water return pipe is connected with the water separator;
the first end of the second water return pipe is connected with the second end of the cooling water loop; the second end of the second water return pipe is connected with the water storage tank;
the first end of the third water return pipe is connected with the middle part of the first water return pipe; the second end of the third water return pipe is connected with the water storage tank;
the first end of the fourth water return pipe is connected with the middle part of the second water return pipe; the second end of the fourth water return pipe is connected with the water separator;
a first electromagnetic switch valve is arranged between the first end of the third water return pipe and the second end of the first water return pipe;
a second electromagnetic switch valve is arranged between the first end and the second end of the third water return pipe;
a third electromagnetic switch valve is arranged between the first end of the fourth water return pipe and the first end of the second water return pipe;
a fourth electromagnetic switch valve is arranged between the first end of the fourth water return pipe and the second end of the second water return pipe;
a fifth electromagnetic switch valve is arranged between the first end and the second end of the fourth water return pipe;
a pressure sensor is arranged at the joint of the first water delivery pipe and the water separator, and a pressure release valve is arranged at the joint of the second water delivery pipe and the water separator;
the pressure sensor is used for measuring the pressure value in the water separator;
the pressure relief valve is used for adjusting the pressure in the water separator;
the control device is respectively electrically connected with the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve, the fourth electromagnetic switch valve and the fifth electromagnetic switch valve in each cooling circuit assembly and is used for controlling the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve, the fourth electromagnetic switch valve and the fifth electromagnetic switch valve to be opened or closed so as to periodically change the flow direction of the cooling water in the cooling water circuit.
2. The intelligent temperature control system of claim 1, further comprising in the cooling circuit assembly: a flow meter and an electromagnetic regulating valve;
the flowmeter and the electromagnetic regulating valve are arranged between the first end of the third water return pipe and the first end of the first water return pipe;
the flow meter is used for measuring the flow of the cooling water in the cooling loop assembly;
and the electromagnetic regulating valve is used for regulating the flow of the cooling water in the cooling loop assembly.
3. The intelligent temperature control system of claim 2, wherein:
the flowmeter and the electromagnetic regulating valve are electrically connected with the control device;
the control device receives a flow value measured by the flowmeter and controls the opening of the electromagnetic regulating valve according to the flow value and a preset first flow threshold value and a preset second flow threshold value.
4. The intelligent temperature control system of claim 1, further comprising in the cooling circuit assembly: the temperature control system comprises an electromagnetic regulating valve, a first temperature sensor and a second temperature sensor;
the electromagnetic regulating valve is arranged between the first end of the third water return pipe and the first end of the first water return pipe;
the first temperature sensor is arranged at the first end of the first water return pipe;
the second temperature sensor is arranged at the first end of the second water return pipe;
the first temperature sensor and the second temperature sensor are used for measuring the temperature of the cooling water flowing through the positions of the first temperature sensor and the second temperature sensor;
and the electromagnetic regulating valve is used for regulating the flow of the cooling water in the cooling loop assembly.
5. The intelligent temperature control system of claim 4, wherein:
the electromagnetic regulating valve, the first temperature sensor and the second temperature sensor are electrically connected with the control device;
the control device receives temperature values measured by the first temperature sensor and the second temperature sensor, and controls the opening degree of the electromagnetic regulating valve according to the temperature values and preset first temperature threshold values and second temperature threshold values.
6. The intelligent temperature control system of claim 5, further comprising: an alarm;
the control device is respectively electrically connected with the electromagnetic regulating valve, the first temperature sensor, the second temperature sensor and the alarm;
the first temperature sensor and the second temperature sensor transmit the measured temperature values to the control device;
when the temperature difference between the temperatures measured by the first temperature sensor and the second temperature sensor is greater than a preset third temperature threshold value, the control device sends an alarm instruction to an alarm;
and the alarm sends out an alarm signal according to the alarm instruction.
7. The intelligent temperature control system of claim 6, further comprising: a third temperature sensor, a temperature controller and at least one temperature acquisition module;
the third temperature sensor and the temperature controller are arranged in the water storage tank;
the third temperature sensor is used for measuring the temperature value in the water storage tank;
the temperature controller is used for heating or cooling water in the water storage tank;
the temperature acquisition module is arranged in a concrete structure to be monitored, in which a cooling water loop in the cooling loop assembly is positioned;
the temperature acquisition module comprises a plurality of temperature acquisition units; the plurality of temperature acquisition units are uniformly arranged in the concrete structure to be monitored in a preset array form.
8. The intelligent temperature control system of claim 7, wherein:
the third temperature sensor, the temperature controller and each temperature acquisition unit are electrically connected with the control device;
the third temperature sensor and each temperature acquisition unit transmit the measured temperature value to the control device;
when the difference value between the temperature value measured by any one temperature acquisition unit and the temperature value measured by the third temperature sensor is greater than or equal to a preset fourth temperature threshold value, the control device sends a starting instruction to the temperature controller and sends an alarm instruction to the alarm; otherwise, the control device sends a closing instruction to the temperature controller;
the temperature controller is started according to the starting instruction to heat or cool the water in the water storage tank; the temperature controller is closed according to a closing instruction;
and the alarm sends out an alarm signal according to the alarm instruction.
9. The intelligent temperature control system of claim 8, wherein:
taking a temperature acquisition unit arranged on the surface of the concrete structure to be monitored in each temperature acquisition module as a surface temperature acquisition unit;
when the temperature value measured in the current measurement period by the surface temperature acquisition unit in any one temperature acquisition module is compared with the temperature value measured in the last measurement period by the surface temperature acquisition unit, and the descending speed is greater than or equal to the preset cooling rate, the control device sends an alarm instruction to the alarm;
and the alarm sends out an alarm signal according to the alarm instruction.
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| CN203616679U (en) * | 2013-11-29 | 2014-05-28 | 中交一公局厦门工程有限公司 | Cooling water circulating control device for mass concrete |
| CN104234431A (en) * | 2014-08-13 | 2014-12-24 | 上海建工集团股份有限公司 | Temperature-control cooling system for large-size concrete structure and cooling control method of temperature-control cooling system |
| CN111103908A (en) * | 2018-10-27 | 2020-05-05 | 中铁十一局集团第一工程有限公司 | Bulky concrete intelligence temperature control device |
| CN209703512U (en) * | 2019-03-26 | 2019-11-29 | 广东中交纵横建设咨询有限公司 | A kind of concrete temperature control cooling water bidirectional return device |
| CN210105322U (en) * | 2019-05-16 | 2020-02-21 | 中铁建工集团有限公司 | Automatic concrete curing system |
| CN110397293A (en) * | 2019-06-19 | 2019-11-01 | 中交天津港湾工程研究院有限公司 | A kind of mass concrete cooling water flows to automatic transfer equipment and its working method |
| CN111362723B (en) * | 2020-04-09 | 2024-01-05 | 中交武汉港湾工程设计研究院有限公司 | Intelligent pipe cooling circulation control system and control method for concrete construction |
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