Temperature-controllable steel formwork for concrete curing

Abstract

The utility model provides a temperature-controllable concrete curing steel template, which comprises a control unit, a first temperature sensor and a concrete cavity enclosed by a plurality of graphene heating plates, each graphene heating plate comprises a steel plate and a graphene heating sheet positioned in a heat conduction sleeve, the heat conduction sleeve and the steel plate are fixed together, the first temperature sensor is arranged in the concrete cavity, and the second temperature sensor is arranged in the heat conduction sleeve. The heat conduction sleeve is located on the surface of the side, facing the concrete cavity, of the steel plate, the first temperature sensor is used for detecting the surface temperature of a concrete part formed in the concrete cavity, and the control unit is electrically connected with the graphene heating piece and the first temperature sensor. The device has the advantages that the external temperature of the concrete piece can be conveniently, rapidly and accurately controlled in an energy-saving manner, and the problems that an existing method for adjusting the surface temperature of the concrete piece is inconvenient, low in speed and energy-consuming, and the surface temperature of the concrete cannot be accurately controlled are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete piece production, in particular to a temperature-controlled steel template for concrete maintenance. Background Art

[0002] Temperature regulation of concrete construction formwork in highway and railway projects has always been a difficult and painful point. Often, simple insulation methods such as quilts, straw mats, felt, and electric blankets are used. However, due to the inadequacy of existing technology development, poor insulation effects often occur, and electric blankets have low heating efficiency and high energy consumption through the formwork, which affects the overall quality of concrete parts. In the construction of large-volume concrete, there is also the problem of difficulty in controlling the temperature difference between the inside and outside, which will lead to temperature cracks in concrete structures, structural stress concentration, and uneven strength development. Utility Model Content

[0003] The utility model aims to provide a temperature-controlled steel formwork for concrete maintenance that can conveniently, quickly, energy-savingly and accurately control the external temperature of concrete parts, thereby solving the problems that the existing methods for adjusting the surface temperature of concrete parts are inconvenient, slow, energy-consuming and unable to accurately control the surface temperature of concrete.

[0004] In order to achieve the above purpose, the utility model adopts the following technology: a temperature-controlled concrete curing steel formwork, including a control unit, a first temperature sensor and a concrete cavity surrounded by a plurality of graphene heating plates, the graphene heating plate including a steel plate and a graphene heating sheet located in a heat-conducting sleeve, the heat-conducting sleeve is fixed together with the steel plate, the heat-conducting sleeve is located on the side surface of the steel plate facing the concrete cavity, the first temperature sensor is used to detect the surface temperature of the concrete member formed in the concrete cavity, the control unit is electrically connected with the graphene heating sheet and the first temperature sensor; the process of curing the concrete member is: first pouring concrete into the concrete cavity to solidify to form a concrete member, and then curing, during the curing process, if the temperature detected by the first temperature sensor is below the first set value, the graphene heating sheet is started for heating, and when the first temperature sensor detects that the surface temperature of the concrete member reaches the second set value, the graphene heating sheet stops heating, and the second set value is greater than the first set value. It is convenient to put the concrete member in a set temperature environment, so as to ensure the curing quality of the concrete.

[0005] Preferably, it also includes a second temperature sensor and a protective sleeve mounted on the second temperature sensor, the protective sleeve is cast in the concrete part, the second temperature sensor is used to detect the temperature inside the concrete part during the curing process, and the protective sleeve is a heat-conducting structure; during the curing process, if the temperature detected by the second temperature sensor is greater than the third set value, the graphene heating plate stops heating when the first temperature sensor detects that the surface temperature of the concrete part reaches the fourth set value, the fourth set value is greater than the first set value and less than the second set value, and the second set value is less than the third set value. It is possible to know whether the internal temperature of the concrete part meets the requirements, and then conveniently and reliably control the internal and external temperature difference of the concrete, which can not only quickly dissipate the internal heat of the concrete, but also meet the external temperature requirements of the concrete part curing room, thereby improving the quality of the produced concrete parts.

[0006] Preferably, the graphene heating plate comprises a bottom graphene heating plate, a top graphene heating plate, a front graphene heating plate, a rear graphene heating plate, a left graphene heating plate and a right graphene heating plate; the left graphene heating plate and the right graphene heating plate are both provided with a plurality of the second temperature sensors, the protective sleeve comprises an inner sleeve and an outer sleeve arranged outside the inner sleeve, the second temperature sensor is arranged in the inner sleeve, the inner sleeve is an elastic structure, and an air-filled cavity is formed between the inner sleeve and the outer sleeve; the inner sleeve and the outer sleeve are both heat-conducting structures, when the air-filled cavity is filled with gas, the inner sleeve elastically inflates toward the inside of the inner sleeve under the action of the air pressure in the air-filled cavity to wrap the second temperature sensor; during the curing process, the air-filled cavity is filled with heat-conducting gas; after the curing is completed, the gas in the air-filled cavity is discharged, the inner sleeve is elastically reset and loses its wrapping effect on the second temperature sensor, and then the second temperature sensor is pulled out from the concrete member. The reliability of detecting the internal temperature of the concrete member can be improved. The sensor can be easily pulled out.

[0007] Preferably, a surface layer is provided on the outer jacket, the outer jacket is a flexible structure, the outer jacket can be pulled out from the surface layer, the surface layer is a heat-conducting structure, and after curing, the outer jacket is pulled out from the surface layer to pull out the second temperature sensor from the concrete member, the surface layer is cast in the concrete member, so that the part outside the outer jacket can be recycled, and the second temperature sensor is not easily damaged when being pulled out.

[0008] Preferably, the outer jacket is provided with a plurality of protrusions extending from the outer jacket, the surface layer is provided with a protrusion surface layer sleeve sleeved on the protrusions, the protrusions are inserted into the protrusion surface layer sleeve so as to be pulled out; when the outer jacket is pulled out from the surface layer, the protrusions are pulled out from the protrusion surface layer sleeve. This can increase the contact area between the outer jacket and the concrete member, improve the reliability of temperature detection, and when the protective jacket is taken out and filled with concrete, the filled concrete and the concrete member can be reliably poured together.

[0009] Preferably, an isolation film is laid on the surface of one side of the concrete cavity formed by the left graphene heating plate and the right graphene heating plate, the outer end of the surface layer is overlapped on the surface layer, the inner sleeve and the outer sleeve mounted on the left graphene heating plate are fixed together with the left graphene heating plate, and the inner sleeve and the outer sleeve mounted on the right graphene heating plate are fixed together with the right graphene heating plate. It can ensure that the surface layer can be reliably separated from the graphene heating plate during the process of pulling out the sleeve.

[0010] Preferably, there is an arc transition between the boss and the outer sleeve, so that the boss can be pulled out reliably without the boss being easily broken.

[0011] Preferably, the convex column is a hollow structure, and the space inside the convex column is connected to the inflation cavity, so that the convex column can be separated from the surface layer of the convex column part with little effort when the protective sleeve is pulled out.

[0012] Preferably, the protective sleeves on the left graphene heating plate and the protective sleeves on the right graphene heating plate are aligned one by one and abutted together; after the second temperature sensor is pulled out, cement slurry is injected into the hole formed in the concrete member by the protective sleeve on one side of the concrete member, so that the cement slurry flows out from the hole formed in the concrete member by the protective sleeve on the other side of the concrete member, and the hole formed in the concrete member by the protective sleeve is filled with cement slurry, and the cement slurry is solidified to form a concrete filling rod cast in the concrete member. It can make it convenient to fill and form the concrete filling rod, and the density of the filled concrete filling rod is good.

[0013] Preferably, it also includes an air pump, a left first three-way valve, a left second three-way valve, a right first three-way valve and a right second three-way valve, the air pump is provided with a first port of the air pump part and a second port of the air pump part, one of the first port of the air pump part and the second port of the air pump part is an inlet and the other is an outlet, the left first three-way valve is provided with a total port of the left first three-way valve part, a first inlet and outlet of the left first three-way valve part and a second inlet and outlet of the left first three-way valve part, the left second three-way valve is provided with a total port of the left second three-way valve part, a first inlet and outlet of the left second three-way valve part and a second inlet and outlet of the left second three-way valve part, the right first three-way valve is provided with a total port of the right first three-way valve part, a first inlet and outlet of the right first three-way valve part and a second inlet and outlet of the right first three-way valve part, the right The two-way and three-way valves are provided with a main port of the right second three-way valve part, a first inlet and outlet of the right second three-way valve part and a second inlet and outlet of the right second three-way valve part; the left graphene heating plate is provided with a left first air distribution cavity and a left second air distribution cavity, the left first air distribution cavity is connected with the first inlet and outlet of the left first three-way valve part, the second inlet and outlet of the left first three-way valve is vacant, the main port of the left first three-way valve is connected with the first port of the air pump part, the left second air distribution cavity is connected with the first inlet and outlet of the left second three-way valve part, the second inlet and outlet of the left second three-way valve is vacant, and the main port of the left second three-way valve is connected with the second port of the air pump part; the right graphene heating plate is provided with a right first air distribution cavity and a right second air distribution cavity, the right first air distribution cavity is connected with the right The first inlet and outlet of the first three-way valve part are connected together, the second inlet and outlet of the right first three-way valve is vacant, the main port of the right first three-way valve is connected to the first port of the air pump part, the right second air distribution cavity is connected to the first inlet and outlet of the right second three-way valve part, the second inlet and outlet of the right second three-way valve is vacant, and the main port of the right second three-way valve is connected to the second port of the air pump part; a partition is provided in the inflation cavity, and the partition separates the inflation cavity into an axial inner cavity and an axial outer cavity, the second temperature sensor includes a detection head and a wire connected to the detection head, the detection head is located in the part where the inner sleeve is located in the axial inner cavity, and the inner sleeve is provided with a middle sleeve worn in the outer sleeve, and the middle sleeve divides the axial outer cavity into radial The inner cavity and the radial outer cavity, the inner end of the middle sleeve is provided with a connecting hole connecting the radial inner cavity and the radial outer cavity; the radial inner cavity of the protective sleeve located on the left graphene heating plate is connected with the left first air distribution cavity, and the radial outer cavity is connected with the left second air distribution cavity, and the radial inner cavity of the protective sleeve located on the right graphene heating plate is connected with the right first air distribution cavity, and the radial outer cavity is connected with the right second air distribution cavity; during the curing process, if the temperature detected by the second temperature sensor is greater than the third set value, the air pump is started, so that the heat inside the concrete piece is brought to the surface of the concrete for heating, so as to reduce the temperature inside the concrete piece below the third set value and increase the temperature on the surface of the concrete piece. The speed of reducing the temperature inside the concrete is fast, and the temperature outside the concrete is heated quickly by using the heat of the concrete exceeding the requirement, which can improve the quality of the concrete and reduce the energy consumption of the curing room.

[0014] Preferably, the first port of the air pump part is an outlet, the second port of the air pump part is an inlet, and the middle sleeve is a heat-insulating structure, which can prevent the intake airflow from exchanging heat in the protective sleeve, so that the heat exchange occurs between the concrete member and the airflow, thereby further improving the efficiency of reducing the internal temperature of the concrete.

[0015] Preferably, a curing water input groove is provided on the lower surface of the top graphene heating plate, and the curing water input groove is connected to a water source through a water pump; during curing, water from the water source is input into the curing water input groove through the water pump and poured onto the upper surface of the concrete member, which can adjust the surface temperature of the concrete and perform watering curing.

[0016] Beneficial effects: heating directly on the concrete surface (existing heating is through the mold), the heating speed is fast and efficient; it can be precisely controlled; the temperature difference between the inside and outside of the concrete curing wire can be conveniently controlled, and the quality of the produced concrete parts is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the use state of the utility model;

[0018] Figure 2 for Figure 1 A local enlarged schematic diagram of point A;

[0019] Figure 3 for Figure 2 A local enlarged schematic diagram of point B;

[0020] Figure 4 for Figure 2 A local enlarged schematic diagram of point C;

[0021] Figure 5 for Figure 2 A local enlarged schematic diagram of D;

[0022] Figure 6 Schematic diagram of concrete parts removed from steel formwork;

[0023] Figure 7 Schematic diagram of the produced concrete parts.

[0024] In the figure: steel plate 1, heat conductive sleeve, graphene heating sheet 3, concrete member 4, second temperature sensor 5, protective sleeve 6, bottom graphene heating plate 7, top graphene heating plate 8, left graphene heating plate 9, right graphene heating plate 10, inner sleeve 11, outer sleeve 12, surface layer 13, boss 14, boss surface sleeve 15, air pump 17, left first three-way valve 18, left second three-way valve 19, right first three-way valve 20, right second three-way valve 21, first port 22 of air pump part, second port 23 of air pump part, total port 24 of left first three-way valve part, first inlet and outlet 25 of left first three-way valve part, second inlet and outlet 26 of left first three-way valve part, total port 27 of left second three-way valve part, first inlet and outlet 28 of left second three-way valve part, second inlet and outlet 29 of left second three-way valve part, total port 30, the first inlet and outlet 31 of the right first three-way valve part, the second inlet and outlet 32 ​​of the right first three-way valve part, the main port 33 of the right second three-way valve part, the first inlet and outlet 34 of the right second three-way valve part, the second inlet and outlet 35 of the right second three-way valve part, the first air distribution cavity 36 of the left, the second air distribution cavity 37 of the left, the first air distribution cavity 38 of the right, the second air distribution cavity 39 of the right, the partition 40, the axial inner cavity 41, the wire 42, the middle sleeve 43, the radial inner cavity 44, the radial outer cavity 45, the connecting hole 46, the isolation membrane 47, the curing water input groove 48, the water pump 49, the concrete piece 50, the hole 51 formed in the concrete piece by the protective sleeve located on one side of the concrete piece, the hole 52 formed in the concrete piece by the protective sleeve located on the other side of the concrete, the concrete filling rod 53, the water source 54, the detection head 55, and the concrete clamp 56. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 7, a temperature-controlled concrete curing steel formwork, comprising a control unit, a first temperature sensor and a concrete cavity surrounded by a plurality of graphene heating plates. The graphene heating plate comprises a steel plate 1 and a graphene heating plate 3 located in a heat-conducting sleeve 2. The heat-conducting sleeve is fixed to the steel plate, and the heat-conducting sleeve is located on the side surface of the steel plate facing the concrete cavity. The first temperature sensor is used to detect the surface temperature of a concrete member 4 formed in the concrete cavity, and the control unit is electrically connected to the graphene heating plate and the first temperature sensor. It also comprises a second temperature sensor 5 and a protective sleeve 6 sleeved on the second temperature sensor. The protective sleeve is cast in the concrete member. The second temperature sensor is used to detect the temperature inside the concrete member during the curing process. The protective sleeve is a heat-conducting structure. The graphene heating plate comprises a bottom graphene heating plate 7, a top graphene heating plate 8, a front graphene heating plate, a rear graphene heating plate, a left graphene heating plate 9 and a right graphene heating plate 10. A plurality of the second temperature sensors are provided on both the left graphene heating plate and the right graphene heating plate. The protective sleeve includes an inner sleeve 11 and an outer sleeve 12 sleeved outside the inner sleeve. The second temperature sensor is inserted into the inner sleeve, the outer sleeve is a flexible structure, and the inner sleeve is an elastic structure. An air-filled cavity is formed between the inner sleeve and the outer sleeve, and both the inner sleeve and the outer sleeve are heat-conducting structures. When the air-filled cavity is filled with air, the inner sleeve elastically inflates toward the inside of the inner sleeve under the action of the air pressure in the air-filled cavity to wrap the second temperature sensor. When the inner sleeve is in a natural state, the second temperature sensor can be pulled out of the inner sleeve. A surface layer 13 is sleeved on the outer sleeve, and the outer sleeve can be pulled out from the surface layer. The surface layer is a heat-conducting structure. After the curing is completed, the outer sleeve is pulled out from the surface layer to realize the pulling out of the second temperature sensor from the concrete member, and the surface layer is cast in the concrete member. The outer sleeve is provided with a plurality of bosses 14 extending from the outside of the outer sleeve, and the surface layer is provided with a boss portion surface layer sleeve 15 sleeved on the boss, and the boss can be pulled out and inserted in the boss portion surface layer sleeve; in the process of pulling the outer sleeve out of the surface layer, the boss is pulled out from the boss portion surface layer sleeve. There is an arc transition between the convex column and the outer sleeve. The convex column is a hollow structure, and the space inside the convex column is connected to the inflation cavity. The protective sleeve on the left graphene heating plate and the protective sleeve on the right graphene heating plate are aligned one by one and abutted together.

[0027] It also includes an air pump 17, a first left three-way valve 18, a second left three-way valve 19, a first right three-way valve 20 and a second right three-way valve 21. The air pump is provided with a first port 22 of the air pump part and a second port 23 of the air pump part. The first port of the air pump part is an outlet, and the second port of the air pump part is an outlet. The first left three-way valve is provided with a total port 24 of the left first three-way valve part, a first inlet and outlet 25 of the left first three-way valve part and a second inlet and outlet 26 of the left first three-way valve part; the second left three-way valve is provided with a total port 27 of the left second three-way valve part, a first inlet and outlet 28 of the left second three-way valve part and a second inlet and outlet 29 of the left second three-way valve part; the first right three-way valve is provided with a total port 30 of the right first three-way valve part, a first inlet and outlet 31 of the right first three-way valve part and a second inlet and outlet 32 ​​of the right first three-way valve part; the second right three-way valve is provided with a total port 33 of the right second three-way valve part, a second inlet and outlet 34 of the right second three-way valve part and The second inlet and outlet 35 of the right second three-way valve part; the left graphene heating plate is provided with a left first air distribution cavity 36 and a left second air distribution cavity 37, the left first air distribution cavity is connected with the first inlet and outlet of the left first three-way valve part, the second inlet and outlet of the left first three-way valve is vacant, the main port of the left first three-way valve is connected with the first port of the air pump part, the left second air distribution cavity is connected with the first inlet and outlet of the left second three-way valve part, the second inlet and outlet of the left second three-way valve is vacant, and the main port of the left second three-way valve is connected with the second port of the air pump part; the right graphene heating plate is provided with a right first air distribution cavity 38 and a right second The air distribution cavity 39, the right first air distribution cavity is connected with the first inlet and outlet of the right first three-way valve part, the second inlet and outlet of the right first three-way valve is vacant, the main port of the right first three-way valve is connected with the first port of the air pump part, the right second air distribution cavity is connected with the first inlet and outlet of the right second three-way valve part, the second inlet and outlet of the right second three-way valve is vacant, and the main port of the right second three-way valve is connected with the second port of the air pump part; a partition 40 is provided in the air charging cavity, and the partition separates the air charging cavity into an axial inner cavity 41 and an axial outer cavity, and the second temperature sensor includes a detection head 55 and a guide connected to the detection head. Line 42, the detection head is located in the part of the inner sleeve located in the axial inner cavity, the inner sleeve is provided with a middle sleeve 43 inserted in the outer sleeve, the middle sleeve divides the axial outer cavity into a radial inner cavity 44 and a radial outer cavity 45, and the inner end of the middle sleeve is provided with a connecting hole 46 connecting the radial inner cavity and the radial outer cavity; the radial inner cavity of the protective sleeve located on the left graphene heating plate is connected with the left first air distribution cavity, and the radial outer cavity is connected with the left second air distribution cavity, and the radial inner cavity of the protective sleeve located on the right graphene heating plate is connected with the right first air distribution cavity, and the radial outer cavity is connected with the right second air distribution cavity. The middle sleeve is a heat-insulating structure.

[0028] The left graphene heating plate and the right graphene heating plate are both provided with an isolation film 47 on one side of the concrete cavity, the outer end of the surface layer is overlapped on the surface layer, the inner sleeve, middle sleeve and outer sleeve on the left graphene heating plate are fixed together with the left graphene heating plate, and the inner sleeve, middle sleeve and outer sleeve on the right graphene heating plate are fixed together with the right graphene heating plate. A curing water input groove 48 is provided on the lower surface of the top graphene heating plate, and the curing water input groove is connected to the water source 54 through a water pump 49.

[0029] The process of curing concrete parts is: first pour concrete into the concrete cavity and solidify to form concrete parts. Before pouring the concrete, the inflation cavity is filled with heat-conducting gas (specifically air). The process of filling the inflation cavity with gas is: the other parts in the axial inner cavity are filled in during production and are always located in the axial inner cavity to maintain the inflation of the axial inner cavity, and the convex column avoids the part of the outer sleeve located in the axial inner cavity. The process of inflating the axial outer cavity is as follows: connect the total port of the left first three-way valve section with the first inlet and outlet of the left first three-way valve section, connect the total port of the left second three-way valve section with the second inlet and outlet of the left second three-way valve section, connect the total port of the right first three-way valve section with the first inlet and outlet of the right first three-way valve section, connect the total port of the right second three-way valve section with the second inlet and outlet of the right second three-way valve section, start the air pump to inhale gas so that the axial outer cavity is inflated; after the axial outer cavity is inflated, connect the total port of the left second three-way valve section with the first inlet and outlet of the left second three-way valve section, connect the total port of the right second three-way valve section with the first inlet and outlet of the right second three-way valve section, and stop the air pump.

[0030] Then, curing is performed. During the curing process, if the temperature detected by the first temperature sensor is below the first set value, the graphene heating sheet is started for heating. If the temperature detected by the second temperature sensor is below the third set value, the graphene heating sheet stops heating when the surface temperature of the concrete member detected by the first temperature sensor reaches the second set value. If the temperature detected by the second temperature sensor is below the third set value, the air pump stops heating. During the curing process, if the temperature detected by the second temperature sensor is greater than the third set value, the graphene heating sheet stops heating when the surface temperature of the concrete member detected by the first temperature sensor reaches the fourth set value, and the air pump is started at the same time. The second set value is greater than the first set value, the fourth set value is greater than the first set value and less than the second set value, and the second set value is less than the third set value. During the curing process, water from the water source is input into the curing water input tank through a water pump and poured on the upper surface of the concrete member.

[0031] After the maintenance is completed, the main port of the left first three-way valve part is connected to the second inlet and outlet of the left first three-way valve part, and the main port of the right first three-way valve part is connected to the second inlet and outlet of the right first three-way valve part, and the air pump is started to discharge the gas in the axial outer cavity and deflate. The graphene heating plate is removed to form a concrete blank 50. The surface layer remains in the concrete blank, and cement slurry is injected into the hole 51 formed in the concrete part by the protective sleeve located on one side of the concrete blank, so that the cement slurry flows out from the hole 52 formed in the concrete part by the protective sleeve located on the other side of the concrete, and the hole formed in the concrete part by the protective sleeve is filled with cement slurry. After the cement slurry is solidified, a concrete filling rod 53 cast in the concrete part is formed. The concrete cement slurry is filled into the inner space of the surface sleeve of the convex column to form a concrete clamp 56.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled concrete curing steel formwork, characterized in that: The invention comprises a control unit, a first temperature sensor and a concrete cavity surrounded by a plurality of graphene heating plates, wherein the graphene heating plates comprise a steel plate and a graphene heating sheet located in a heat-conducting sleeve, the heat-conducting sleeve is fixed to the steel plate, the heat-conducting sleeve is located on a side surface of the steel plate facing the concrete cavity, the first temperature sensor is used to detect the surface temperature of a concrete piece formed in the concrete cavity, and the control unit is electrically connected to the graphene heating sheet and the first temperature sensor.

2. The temperature-controlled concrete curing steel formwork according to claim 1, characterized in that: It also includes a second temperature sensor and a protective sleeve mounted on the second temperature sensor, the protective sleeve is cast in the concrete member, the second temperature sensor is used to detect the temperature inside the concrete member during the curing process, and the protective sleeve is a heat-conducting structure.

3. The temperature-controlled concrete curing steel formwork according to claim 2, characterized in that: The graphene heating plate includes a bottom graphene heating plate, a top graphene heating plate, a front graphene heating plate, a rear graphene heating plate, a left graphene heating plate and a right graphene heating plate; a plurality of second temperature sensors are provided on the left graphene heating plate and the right graphene heating plate, the protective cover includes an inner cover and an outer cover arranged outside the inner cover, the second temperature sensor is inserted into the inner cover, the inner cover is an elastic structure, and an air-filled cavity is formed between the inner cover and the outer cover; the inner cover and the outer cover are both heat-conducting structures, and when the air-filled cavity is filled with air, the inner cover elastically inflates toward the inside of the inner cover under the action of the air pressure in the air-filled cavity to wrap the second temperature sensor.

4. The temperature-controlled concrete curing steel formwork according to claim 3, characterized in that: The outer jacket is provided with a surface layer, the outer jacket is a flexible structure, the outer jacket can be pulled out from the surface layer, and the surface layer is a heat-conducting structure.

5. The temperature-controlled concrete curing steel formwork according to claim 4, characterized in that: The outer sleeve is provided with a plurality of convex columns extending from the outer sleeve, and the surface layer is provided with a convex column surface layer sleeve sleeved on the convex columns, and the convex columns are inserted into the convex column surface layer sleeve so as to be pulled out.

6. The temperature-controlled concrete curing steel formwork according to claim 5, characterized in that: An isolation film is laid on the surface of one side of the concrete cavity formed by the left graphene heating plate and the right graphene heating plate, the outer end of the surface layer is overlapped on the surface layer, the inner sleeve and the outer sleeve mounted on the left graphene heating plate are fixed together with the left graphene heating plate, and the inner sleeve and the outer sleeve mounted on the right graphene heating plate are fixed together with the right graphene heating plate.

7. A temperature-controlled concrete curing steel formwork according to claim 5 or 6, characterized in that: The convex column is a hollow structure, and the space inside the convex column is communicated with the inflation cavity.

8. A temperature-controlled concrete curing steel formwork according to claim 3, 4, 5 or 6, characterized in that: It also includes an air pump, a left first three-way valve, a left second three-way valve, a right first three-way valve and a right second three-way valve, the air pump is provided with a first port of the air pump part and a second port of the air pump part, one of the first port of the air pump part and the second port of the air pump part is an inlet and the other is an outlet, the left first three-way valve is provided with a total port of the left first three-way valve part, a first inlet and outlet of the left first three-way valve part and a second inlet and outlet of the left first three-way valve part, the left second three-way valve is provided with a total port of the left second three-way valve part, a second inlet and outlet of the left second three-way valve part and a first inlet and outlet of the left second three-way valve part, the right first three-way valve is provided with a total port of the right first three-way valve part, a first inlet and outlet of the right first three-way valve part The left graphene heating plate is provided with a left first air distribution cavity and a left second air distribution cavity, the left first air distribution cavity is connected with the first inlet and outlet of the left first three-way valve part, the second inlet and outlet of the left first three-way valve part is vacant, the main port of the left first three-way valve is connected with the first port of the air pump part, the left second air distribution cavity is connected with the first inlet and outlet of the left second three-way valve part, the second inlet and outlet of the left second three-way valve part is vacant, the main port of the left first three-way valve is connected with the first port of the air pump part, the left second air distribution cavity is connected with the first inlet and outlet of the left second three-way valve part, the second inlet and outlet of the left second three-way valve is vacant, and the main port of the left second three-way valve is connected with the first inlet and outlet of the left second three-way valve part The two ports are connected together; the right graphene heating plate is provided with a right first air distribution cavity and a right second air distribution cavity, the right first air distribution cavity is connected with the first inlet and outlet of the right first three-way valve part, the second inlet and outlet of the right first three-way valve is vacant, the main port of the right first three-way valve is connected with the first port of the air pump part, the right second air distribution cavity is connected with the first inlet and outlet of the right second three-way valve part, the second inlet and outlet of the right second three-way valve is vacant, and the main port of the right second three-way valve is connected with the second port of the air pump part; a partition is provided in the inflation cavity, which separates the inflation cavity into an axial inner cavity and an axial outer cavity, and the second temperature sensor includes a detection A probe and a wire connected to the detection head, the detection head is located in the portion where the inner sleeve is located in the axial inner cavity, the inner sleeve is provided with a middle sleeve inserted in the outer sleeve, the middle sleeve divides the axial outer cavity into a radial inner cavity and a radial outer cavity, and the inner end of the middle sleeve is provided with a connecting hole connecting the radial inner cavity and the radial outer cavity; the radial inner cavity of the protective sleeve located on the left graphene heating plate is connected with the left first air distribution cavity, and the radial outer cavity is connected with the left second air distribution cavity, and the radial inner cavity of the protective sleeve located on the right graphene heating plate is connected with the right first air distribution cavity, and the radial outer cavity is connected with the right second air distribution cavity.

9. The temperature-controlled concrete curing steel formwork according to claim 8, characterized in that: The first port of the air pump part is an outlet, the second port of the air pump part is an inlet, and the middle sleeve is an insulating structure.

10. A temperature-controlled concrete curing steel formwork according to claim 3, 4, 5 or 6, characterized in that: A curing water input groove is provided on the lower surface of the top graphene heating plate, and the curing water input groove is connected with a water source through a water pump.

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