Energy-saving and heat-preserving system and method for winter concrete

Abstract

The present application relates to a kind of winter concrete energy-saving insulation system and insulation method;The insulation system includes the thermal insulation material covering the surface of the cast concrete, the vertical rod of supporting thermal insulation material and concrete formwork, the heat source generating hot airflow, and the heat pipe communicated with the heat source;The heat pipe is through the concrete structure and the thermal insulation material on one side of concrete;The pipe opening of heat pipe is open;The outer wall of heat pipe is tightly connected with thermal insulation material;The vertical rod includes detection vertical rod;Detection vertical rod top is equipped with the detection shaft that can pass through the reserved hole of concrete formwork and detect the strength of concrete;According to the strength detection result, it is judged whether the reinforced concrete needs to continue insulation maintenance, and the insulation temperature can be adjusted in time, in the form of heat source power to reduce energy consumption;The insulation method using the insulation system can provide more fine insulation maintenance for concrete setting, thereby effectively guaranteeing the quality of concrete pouring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering construction, in particular to a winter concrete energy-saving insulation system and insulation method. BACKGROUND

[0002] When the concrete is constructed in winter, it is easily affected by low temperature environment. The influence of low temperature environment on concrete mainly has two aspects: first, the freezing of water in the concrete causes damage to the concrete; the low temperature environment reduces the hydration rate of cement, thereby affecting the strength development of the concrete. If the freshly mixed concrete is frozen and the temperature is maintained at about-10 DEG C, the hydration of cement and the strength development will both stop; if the concrete is frozen and the tensile strength has not reached the level that can resist the expansion force caused by the freezing of water, the expansion force will cause the concrete to expand and crack, resulting in irreversible irregular cracks and strength loss; in general, if the freshly mixed concrete is frozen within 24 hours, the 28-day compressive strength will be reduced by about 50%, and the surface of the concrete will be peeled off and the durability will be reduced; second, there is a large temperature gradient between the surface and the interior of the concrete, which causes temperature stress damage to the concrete; because the surface temperature of the concrete structure decreases significantly faster than the internal temperature, the concrete structure in winter is prone to temperature stress; if the tensile strength of the concrete is not enough to resist the stress of the temperature, the surface of the concrete will produce irregular visible or invisible cracks. Most of these cracks are not recoverable and will gradually expand under load, slowly becoming a channel for corrosive elements to enter the interior of the concrete, thereby greatly reducing the durability. Both aspects are in the case where the mechanical properties of the concrete do not meet the design requirements, the expansion force of water freezing or temperature stress causes damage to the concrete structure; the prior art proposes to insulate the concrete structure and monitor the temperature in real time, thereby avoiding the damage of the expansion force of water freezing or temperature stress to the concrete structure in winter; however, these technical solutions do not detect the real-time strength of the concrete, and cannot directly determine whether the concrete meets the design requirements, and naturally cannot determine whether it is necessary to continue to insulate and maintain; therefore, the insulation time is generally extended to achieve maintenance, which is a waste of energy. SUMMARY

[0003] The present application aims to solve the above problems, and provides a winter concrete energy-saving insulation system and insulation method.

[0004] The technical scheme of the present application is: a winter concrete energy-saving heat preservation system, comprising heat preservation material covering the surface of the poured concrete, vertical rods supporting the heat preservation material and the concrete formwork, a heat source generating hot air flow, and a heat pipeline communicating with the heat source; the selection of the heat preservation material is diverse, which can be heat preservation film or cotton quilt; the selection requirement of the present technical scheme for the heat preservation material is not strict, and it only needs to be able to insulate heat exchange and cover the surface of the concrete; the heat pipeline penetrates the concrete structure and the heat preservation material on one side of the concrete; the pipeline opening of the heat pipeline is open; the hot air flow is discharged from the open pipeline opening, fills the interlayer between the concrete structure and the heat preservation material, and forms a heating layer; the heating layer insulates the heat exchange between the internal concrete structure and the outside on one hand, and heats the concrete structure on the other hand, so as to improve the temperature of the concrete structure and be beneficial to the concrete construction; the outer wall of the heat pipeline is in airtight connection with the heat preservation material, so as to reduce the heat loss; the vertical rods comprise detection vertical rods and common vertical rods; the common vertical rods are used for the conventional support of the formwork; the detection vertical rods support the concrete formwork provided with a reserved hole; the top of the detection vertical rods is provided with a detection shaft capable of penetrating the reserved hole to detect the strength of the concrete; the top of the detection shaft is embedded with a rebound hammer, so as to quantize the strength of the concrete.

[0005] Preferably, the detection vertical rod end is provided with a support cylinder, a transposition motor, a rotating column, a supplementary shaft, a supplementary motor, a detection shaft and a detection motor; the upper end of the support cylinder exceeds the upper end of the rotating column; the lower end of the support cylinder is connected with the end surface of the detection vertical rod; the support cylinder is the main component for the vertical rod to support the formwork; the transposition motor is fixedly connected with the bottom of the support cylinder for installation; the motor shaft of the transposition motor is coaxially fixedly connected with the rotating column; the transposition motor can drive the rotating column to rotate; the supplementary shaft and the detection shaft are respectively symmetrically embedded in the rotating column; the supplementary motor is arranged below the supplementary shaft and is fixedly connected with the rotating column; the supplementary motor can drive the supplementary shaft to rotate; the motor shaft of the supplementary motor is threadedly connected with the lower end of the supplementary shaft; the upper end of the supplementary shaft is a cylindrical body matched with a reserved hole; the lower end of the supplementary shaft is a polygonal prism A with a larger cross-sectional area than the upper end of the supplementary shaft; the detection motor is arranged below the detection shaft and is fixedly connected with the rotating column; the motor shaft of the detection motor is threadedly connected with the lower end of the detection shaft; the upper end of the detection shaft is a cylindrical body matched with a reserved hole; the lower end of the detection shaft is a polygonal prism B with a larger cross-sectional area than the upper end of the detection shaft; the rotating column is provided with a supplementary hole corresponding to the supplementary shaft and a detection hole corresponding to the detection shaft; through the threaded screw transmission cooperation of the lower end of the supplementary shaft and the motor shaft of the supplementary motor and the guidance of the supplementary hole to the prism A, the supplementary shaft can be extended into or retracted from the reserved hole at the port of the support cylinder; similarly, through the threaded screw transmission cooperation of the lower end of the detection shaft and the motor shaft of the detection motor and the guidance of the detection shaft to the prism B, the detection shaft can be extended into or retracted from the reserved hole at the port of the support cylinder; the length of the upper end of the supplementary shaft is matched with the hole depth of the reserved hole, i.e. the length of the upper end of the supplementary hole = the thickness of the concrete formwork + the depth of the upper end of the detection hole; when the supplementary shaft is extended into the reserved hole, the flatness of the reinforced concrete pouring base surface is guaranteed, thereby meeting the design requirements; when the detection shaft is extended into the reserved hole, the strength of the concrete is detected. According to the strength detection result, it is judged whether the reinforced concrete needs to be kept warm and maintained, the temperature of the heat preservation is timely adjusted, the power of the heat source is adjusted, and the energy consumption is reduced; the depth of the polygonal cavity of the lower end of the supplementary hole is greater than the length of the prism A, so as to ensure that the supplementary shaft can be extended into the reserved hole to a sufficient depth; the length of the upper end of the detection shaft > the thickness of the concrete formwork + the hole depth of the upper end of the detection hole; the depth of the polygonal cavity of the lower end of the detection hole is greater than the length of the prism B, so as to ensure that the detection shaft can be extended into the reserved hole to a sufficient depth.

[0006] Preferably, the concrete structure is provided with a reserved port; the reserved port is generally a layout port, a material conveying port or a reserved hole port reserved for building floor slab construction; the winter concrete energy-saving and heat-preserving system further comprises a hollow formwork; the hollow formwork is sleeved in the reserved port and is integrally a reverse trapezoidal body and is permeable from top to bottom; the heat pipe passes through the concrete structure from the middle of the hollow formwork, so as to avoid the direct contact of the heat pipe with the concrete structure and cause the temperature stress to damage the concrete structure.

[0007] Further, the pipe wall of the heat pipe is densely provided with sieve holes before penetrating into the concrete structure; hot air flows into the concrete form below through the sieve holes to heat and keep warm the bottom of the form, so that both sides of the concrete structure can be kept warm.

[0008] Preferably, the winter concrete energy-saving and heat-keeping system further comprises a temperature detection device; the temperature detection device is arranged at the end of the concrete pouring surface; the temperature detection device can determine whether the hot air flow reaches the end of the pouring surface; the temperature and flow rate of the hot air flow are adjusted reasonably according to the detection result of the temperature detection device, so as to ensure that the temperature of the end of the concrete pouring surface meets the winter concrete curing requirement.

[0009] A heat-keeping method using the winter concrete energy-saving and heat-keeping system comprises the following steps:

[0010] ① The heat source provides hot air flow; the hot air flow enters above and below the concrete structure through the heat pipe; the upper and lower parts of the concrete structure are covered with heat-keeping materials, so that the hot air flow acts on the middle concrete structure, on the one hand, to insulate the concrete structure from heat exchange with the outside world, and on the other hand, to provide heat energy, so that the concrete structure is at the required temperature for setting;

[0011] ② The detection shaft is timely inserted into the reserved hole to detect the strength of the concrete; according to the strength detection result, it is determined whether the reinforced concrete needs to be kept warm and cured; the heat-keeping temperature is adjusted in time, the power of the heat source is adjusted, and the energy consumption is reduced according to the strength data of the concrete.

[0012] Preferably, in step ②, the concrete final setting needs M days; the concrete final setting refers to the time when the concrete completely loses plasticity; at this time, the strength is 60%; after the concrete final setting is completed, the temperature of the upper and lower parts of the concrete structure is detected by the temperature detection device, and the time when the strength of the concrete reaches the design strength is estimated to be N-M days; starting from the Nth day, the rotating column is rotated at a fixed time every day, the detection shaft is retracted into the support cylinder along with the rotation of the rotating column; the rotating column is driven to rotate by the transposition motor, so as to move the detection shaft to directly below the reserved hole; the detection shaft is lifted into the reserved hole to detect the strength of the concrete under the drive of the detection motor.

[0013] The winter concrete energy-saving and heat-keeping system has the following advantages:

[0014] (1) The top of the detection vertical rod is provided with a detection shaft that can detect the strength of the concrete; according to the strength detection result, it is determined whether the reinforced concrete needs to be kept warm and cured, and the heat-keeping temperature is adjusted in time, so as to reduce the energy consumption in the form of adjusting the power of the heat source;

[0015] (2) The pipe wall of the heat pipe of the application is densely covered with screen holes before penetrating into the concrete structure; hot air flows through the screen holes to heat and keep warm the bottom of the formwork below the concrete formwork, so that both sides of the concrete structure can be kept warm and maintained.

[0016] The heat preservation method using the winter concrete energy-saving heat preservation system can provide more precise heat preservation and maintenance for concrete setting, thereby effectively ensuring the concrete pouring quality and shortening the construction period. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural diagram of the winter concrete energy-saving heat preservation system of the application;

[0018] Figure 2 is an enlarged view of Figure 1 ;

[0019] Figure 3 is a perspective view of the hollow formwork;

[0020] Figure 4 is a perspective view of the concrete formwork provided with a reserved hole;

[0021] Figure 5 is a schematic view of detecting the top of the vertical rod;

[0022] Figure 6 is an A-A sectional view of Figure 5 ;

[0023] Figure 7 is a B-B sectional view of Figure 5 ;

[0024] In the drawings: 01. concrete formwork, 011. reserved hole, 02. reserved opening, 1. heat preservation material, 2. vertical rod, 21. detection vertical rod, 211. support cylinder, 212. transposition motor, 213. rotating column, 2131. supplementary hole, 2132. detection hole, 214. supplementary shaft, 2141. prismatic A, 215. supplementary motor, 216. detection shaft, 2161. prismatic B, 217. detection motor, 3. heat source, 4. heat pipe, 41. screen hole, 42. binding belt, 5. hollow formwork, 6. temperature detection device. DETAILED DESCRIPTION

[0025] Example one: refer to Figures 1-7The application discloses a winter concrete energy-saving and heat-insulating system, which comprises heat-insulating material 1 covering the surface of the cast concrete, vertical rod 2 supporting the heat-insulating material 1 and the concrete formwork 01, heat source 3 generating hot air flow, and heat pipe 4 communicating with the heat source 3; the heat-insulating material 1 can be heat-insulating film or cotton quilt; the application is not strict with the selection of the heat-insulating material 1, and only requires that the heat-insulating material 1 can insulate heat exchange and cover the surface of the concrete; the heat pipe 4 penetrates the concrete structure and the heat-insulating material 1 on one side of the concrete; the pipe opening of the heat pipe 4 is open; the hot air flow is discharged from the open pipe opening, fills the interlayer between the concrete structure and the heat-insulating material 1, and forms a heating layer; the heating layer insulates the heat exchange between the internal concrete structure and the outside on one hand, and heats the concrete structure on the other hand, so as to improve the temperature of the concrete structure and be beneficial to the concrete construction; the outer wall of the heat pipe is in close connection with the heat-insulating material 1, so as to reduce the heat loss; the binding belt 42 is used to connect the joint of the outer wall of the heat pipe and the heat-insulating material 1 in the embodiment, so as to realize the sealing treatment and reduce the heat loss at the joint; the vertical rod 2 comprises detection vertical rod 21 and common vertical rod; the common vertical rod is used for the normal support of the formwork; the detection vertical rod 21 supports the concrete formwork 01 provided with reserved hole 011; the detection shaft 216 capable of detecting the strength of the concrete is arranged at the top of the detection vertical rod 21; the rebound instrument is embedded in the top of the detection shaft 216, and the strength of the concrete is detected.

[0026] Compared with the prior art, the application adds the detection vertical rod 21; the detection shaft 216 capable of detecting the strength of the concrete is arranged at the top of the detection vertical rod 21; according to the strength detection result, whether the reinforced concrete needs to continue heat-insulating maintenance is judged, the heat-insulating temperature can be timely adjusted, the power of the heat source 3 is reduced in the form of the power, the energy consumption is reduced, and the construction period is reasonably shortened.

[0027] The end of the detection vertical rod 21 is provided with a support cylinder 211, a transposition motor 212, a rotating column 213, a supplementary shaft 214, a supplementary motor 215, a detection shaft 216 and a detection motor 217. The upper end of the support cylinder 211 exceeds the upper end of the rotating column 213. The lower end of the support cylinder 211 is connected with the end face of the detection vertical rod 21. The support cylinder 211 is the main component for the vertical rod 2 to support the formwork. The transposition motor 212 is fixedly connected with the bottom of the support cylinder 211 for installation. The motor shaft of the transposition motor 212 is coaxially fixedly connected with the rotating column 213. The transposition motor 212 can drive the rotating column 213 to rotate. The supplementary shaft 214 and the detection shaft 216 are respectively symmetrically embedded in the rotating column 213. The supplementary motor 215 is arranged below the supplementary shaft 214 and is fixedly connected with the rotating column 213. The supplementary motor 215 can drive the supplementary shaft 214 to rotate. The motor shaft of the supplementary motor 215 is threadedly connected with the lower end of the supplementary shaft 214. The upper end of the supplementary shaft 214 is a cylindrical body matched with the reserved hole 011. The lower end of the supplementary shaft 214 is a polygonal prism A 2141 with a larger cross-sectional area than the upper end of the supplementary shaft 214. The concrete formwork 01 supported by the detection vertical rod 21 is provided with a reserved hole 011 matched with the upper end of the supplementary shaft 214. The detection motor 217 is arranged below the detection shaft 216 and is fixedly connected with the rotating column 213. The motor shaft of the detection motor 217 is threadedly connected with the lower end of the detection shaft 216. The upper end of the detection shaft 216 is a cylindrical body matched with the reserved hole 011. The lower end of the detection shaft 216 is a polygonal prism B 2161 with a larger cross-sectional area than the upper end of the detection shaft 216. The rotating column 213 is provided with a supplementary hole 2131 corresponding to the supplementary shaft 214 and a detection hole 2132 corresponding to the detection shaft 216. Through the threaded screw transmission cooperation of the lower end of the supplementary shaft 214 and the motor shaft of the supplementary motor 215 and the guidance of the supplementary hole 2131 to the prism A 2141, the supplementary shaft 214 can be inserted into or retracted from the reserved hole 011 at the port of the support cylinder 211. Similarly, through the threaded screw transmission cooperation of the lower end of the detection shaft 216 and the motor shaft of the detection motor 217 and the guidance of the detection shaft 216 to the prism B 2161, the detection shaft 216 can be inserted into or retracted from the reserved hole 011 at the port of the support cylinder 211. The length of the upper end of the supplementary shaft 214 is matched with the hole depth of the reserved hole 011, that is, the length of the upper end of the supplementary hole 2131 = the thickness of the concrete formwork 01 + the depth of the upper end of the detection hole 2132. When the supplementary shaft 214 is inserted into the reserved hole 011, the flatness of the reinforced concrete pouring base surface is guaranteed, thereby meeting the design requirements. When the detection shaft 216 is inserted into the reserved hole 011, the strength of the concrete is detected.According to the strength detection result, it is judged whether the reinforced concrete needs to be kept warm and maintained, through the concrete strength data, the temperature of the heat preservation is timely adjusted, the power of the heat source 3 is adjusted, and the energy consumption is reduced; the depth of the polygonal cavity at the lower end of the supplement hole 2131 is greater than the length of the prism A 2141, so as to ensure that the supplement shaft 214 can extend into the reserved hole 011 to a sufficient depth; the length of the upper end of the detection shaft 216 is greater than the thickness of the concrete formwork 01 plus the hole depth of the upper end of the detection hole 2132; the depth of the polygonal cavity at the lower end of the detection hole 2132 is greater than the length of the prism B 2161, so as to ensure that the detection shaft 216 can extend into the reserved hole 011 to a sufficient depth; the polygonal cavity at the lower end of the supplement hole 2131, the polygonal cavity at the lower end of the detection hole 2132, the prism A 2141 and the prism B 2161 in the embodiment are all selected to be right quadrangular prisms.

[0028] The concrete structure is provided with a reserved opening 02; the reserved opening 02 is generally a layout opening, a material transfer opening, a reserved hole opening and the like structure reserved for building floor slab construction; the winter concrete energy-saving and heat preservation system further comprises a hollow formwork 5; the hollow formwork 5 is sleeved in the reserved opening 02 and is integrally a inverted trapezoidal body and is permeable from top to bottom; the heat pipe passes through the middle of the hollow formwork 5 and passes through the concrete structure, so that the heat pipe can avoid direct contact with the concrete structure to cause temperature stress to damage the concrete structure.

[0029] A section of pipe wall of the heat pipe before penetrating into the concrete structure is densely provided with sieve holes 41; the hot air flows through the sieve holes 41 into the concrete formwork 01 below to heat and preserve the bottom of the formwork, so that both sides of the concrete structure can be heat preserved and maintained.

[0030] The winter concrete energy-saving and heat preservation system further comprises a temperature detection device 6; the temperature detection device 6 is arranged at the end of the concrete pouring surface; the temperature detection device 6 can judge whether the hot air flow is sufficient to reach the end of the pouring surface; the temperature and the flow rate of the hot air flow are reasonably adjusted according to the detection condition of the temperature detection device 6, so as to ensure that the temperature of the concrete pouring surface at the end meets the maintenance requirements of the winter concrete.

[0031] The installation process of the embodiment is as follows:

[0032] ①Erecting a pole 2

[0033] According to the design drawing requirement, the pole 2 is erected; wherein the detection pole 21 is erected at a specific position, and the ordinary pole is arranged at other positions;

[0034] ②Laying the heat preservation material 1 and the concrete formwork 01

[0035] According to the design drawing requirement, the heat preservation material 1 and the concrete formwork 01 are laid; the heat preservation material 1 is below, and the concrete formwork 01 is above; the pole 2 supports the concrete formwork 01; the detection pole 21 supports the concrete formwork 01 provided with the reserved hole 011; the supplement shaft 214 is opposite to the reserved hole 011;

[0036] ③ Set the heat pipe 4

[0037] In the design of the reserved hole 02 position set hollow template 5; heat pipe 4 one end with heat source 3 communication, the other end is open and in turn through the already laid insulation material 1, hollow template 5 intermediate position upward; heat pipe 4 open end slightly higher than the reinforced concrete pouring top surface;

[0038] ④ Pouring concrete according to the drawing requirements

[0039] Supplementary motor 215 start, make up the shaft 214 rises, block the reserved hole 011; then again according to the drawing requirements pouring concrete;

[0040] ⑤ Add insulation material 1

[0041] In the pouring of concrete on the laying of insulation material 1, until the concrete is covered with insulation material 1 around.

[0042] Example two: a kind of winter concrete energy-saving insulation system insulation method, characterized in that: comprising the following steps:

[0043] ① Heat source 3 provides hot air flow; hot air flow through heat pipe into the concrete structure above and below the concrete structure; the upper and lower concrete structure is covered with insulation material 1, so the hot air flow acts on the intermediate concrete structure, on the one hand, the concrete structure is isolated from the outside heat exchange, on the other hand, provides heat energy, so that the concrete structure is in the condensation required temperature;

[0044] ② Detection shaft 216 in time through the reserved hole 011 into, the strength of the concrete is detected; according to the strength test results, judge whether the reinforced concrete needs to be insulated and maintained, through the concrete strength data, timely adjust the temperature, adjust the power of heat source 3, reduce energy consumption, reasonable shorten the construction period.

[0045] In step ②, the concrete final setting needs M days; the concrete final setting refers to the time when the concrete completely loses plasticity; at this time, the strength is 60%; after the completion of the concrete final setting, the temperature of the concrete structure above and below is detected by the temperature detection device 6, and the time when the concrete strength reaches the design strength is estimated as N-M days; from the N day, the rotating column 213 is rotated every day, and the supplementary shaft 214 is retracted into the supporting cylinder 211 with the rotation of the rotating column 213; the rotating column 213 is driven by the transposition motor 212 to move the detection shaft 216 to the reserved hole 011 directly below; the detection shaft 216 is lifted by the detection motor 217 and extends into the reserved hole 011 to detect the strength of the concrete.

Claims

1. A winter-use concrete energy-saving insulation system, comprising insulation material covering the surface of poured concrete, uprights supporting the insulation material and concrete formwork, a heat source generating hot airflow, and a thermal pipe connected to the heat source; the thermal pipe penetrates the concrete structure and the insulation material on one side of the concrete; the pipe opening is open; the outer wall of the thermal pipe is sealed to the insulation material; characterized in that, The stand rod comprises a detection stand rod; a reserved hole is arranged on a concrete formwork supported by the detection stand rod; and a detection shaft capable of penetrating the reserved hole to detect the strength of the concrete is arranged at the top of the detection stand rod; The end of the detection stand rod is provided with a supporting cylinder, a transposition motor, a rotating column, a supplementary shaft, a supplementary motor, a detection shaft and a detection motor; the upper end of the supporting cylinder exceeds the upper end of the rotating column; the lower end of the supporting cylinder is connected with the end surface of the detection stand rod; the transposition motor is fixedly connected with the bottom of the supporting cylinder; the motor shaft of the transposition motor is coaxially fixedly connected with the rotating column; the supplementary shaft and the detection shaft are respectively symmetrically embedded in the rotating column; the supplementary motor is arranged below the supplementary shaft and is fixedly connected with the rotating column; the motor shaft of the supplementary motor is threadedly connected with the lower end of the supplementary shaft; the upper end of the supplementary shaft is a cylindrical body matched with the reserved hole; the lower end of the supplementary shaft is a polygonal prism A with a larger cross-sectional area than the upper end of the supplementary shaft; the detection motor is arranged below the detection shaft and is fixedly connected with the rotating column; the motor shaft of the detection motor is threadedly connected with the lower end of the detection shaft; the upper end of the detection shaft is a cylindrical body matched with the reserved hole; the lower end of the detection shaft is a polygonal prism B with a larger cross-sectional area than the upper end of the detection shaft; the rotating column is provided with a supplementary hole corresponding to the supplementary shaft and a detection hole corresponding to the detection shaft; the length of the upper end of the supplementary shaft matches the hole depth of the reserved hole; the depth of the polygonal cavity at the lower end of the supplementary hole is greater than the length of the prism A; the length of the upper end of the detection shaft is greater than the thickness of the concrete formwork plus the hole depth of the detection hole at the upper end; and the depth of the polygonal cavity at the lower end of the detection hole is greater than the length of the prism B.

2. The winter concrete energy conservation system according to claim 1, wherein: The concrete structure is provided with a reserved opening; the winter concrete energy-saving and heat-insulating system further comprises a hollow formwork; the hollow formwork is sleeved in the reserved opening and is in the shape of an inverted trapezoidal body and is permeable from top to bottom; and a heat pipe passes through the hollow formwork and penetrates into the concrete structure.

3. The winter concrete energy conservation system of claim 2, wherein: The wall of the heat pipe is densely provided with sieve holes before the heat pipe penetrates into the concrete structure.

4. The winter concrete energy conservation system of claim 1, wherein: The system further comprises a temperature detection device; and the temperature detection device is arranged at the end of the concrete pouring surface.

5. A method of insulating using the energy-saving insulating system for winter concrete according to claim 1, characterized in that: The system comprises the following steps: ① a heat source provides a hot gas flow; The hot gas flow enters the concrete structure above and below through the heat pipe; the upper and lower parts of the concrete structure are covered with heat-insulating materials, so that the hot gas flow acts on the concrete structure in the middle, on the one hand to isolate the concrete structure from the outside heat exchange, and on the other hand to provide heat energy, so that the concrete structure is at the required temperature for setting; ② the detection shaft timely extends into the reserved hole to detect the strength of the concrete; according to the strength detection result, it is determined whether the reinforced concrete needs heat-insulating maintenance; the heat-insulating temperature is timely adjusted according to the concrete strength data, the power of the heat source is adjusted, and the energy consumption is reduced.

6. The heat retaining method according to claim 5, characterized by: The winter concrete energy-saving and heat-insulating system further comprises a temperature detection device; and the temperature detection device is arranged at the end of the concrete pouring surface. The end of the detection vertical rod is provided with a supporting cylinder, a transposition motor, a rotating column, a supplementary shaft, a supplementary motor, a detection shaft and a detection motor; the upper end of the supporting cylinder exceeds the upper end of the rotating column; the lower end of the supporting cylinder is connected with the end surface of the detection vertical rod; the transposition motor is fixedly connected with the bottom of the supporting cylinder; the motor shaft of the transposition motor is coaxially fixedly connected with the rotating column; the supplementary shaft and the detection shaft are respectively symmetrically embedded in the rotating column; the supplementary motor is arranged below the supplementary shaft and is fixedly connected with the rotating column; the motor shaft of the supplementary motor is threadedly connected with the lower end of the supplementary shaft; the upper end of the supplementary shaft is a cylindrical body matched with the reserved hole; the lower end of the supplementary shaft is a polygonal prism A with a larger cross-sectional area than the upper end of the supplementary shaft; the detection motor is arranged below the detection shaft and is fixedly connected with the rotating column; the motor shaft of the detection motor is threadedly connected with the lower end of the detection shaft; the upper end of the detection shaft is a cylindrical body matched with the reserved hole; the lower end of the detection shaft is a polygonal prism B with a larger cross-sectional area than the upper end of the detection shaft; the rotating column is provided with a supplementary hole corresponding to the supplementary shaft and a detection hole corresponding to the detection shaft; the depth of the polygonal cavity at the lower end of the supplementary hole is greater than the length of the prism A; the depth of the polygonal cavity at the lower end of the detection hole is greater than the length of the prism B; In step 2, the concrete final setting needs M days; after the final setting of the concrete is completed, the temperature detection device detects the temperature above and below the concrete structure, estimates that the time for the concrete strength to reach the design strength is N-M days; starting from the Nth day, the rotating column is rotated at a fixed time every day, and the supplementary shaft is retracted into the supporting cylinder along with the rotation of the rotating column; the transposition motor drives the rotating column to rotate and moves the detection shaft to directly below the reserved hole; the detection shaft is lifted into the reserved hole under the driving of the detection motor to detect the strength of the concrete.

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