Large-volume super-long concrete winter seamless construction and maintenance device and method

Abstract

The invention designs a recyclable pre-embedded intelligent maintenance system aiming at the requirement of seamless construction and maintenance of large-volume super-long concrete in winter. The core is a circulation pipeline with a built-in capillary through hole, and the interior of the circulation pipeline is divided into a steam pipeline (humidification), a heat exchange pipeline (temperature control) and an air bag pipeline (sealed regulation and control) through partition pieces. During construction, the circulation pipeline is pressurized, and the air pump pressurizes the air bag pipeline, so that the elastic membrane is tightly attached to the inner wall of the pipeline, concrete permeation is prevented, and it is ensured that the heat exchange pipeline makes close contact with concrete; the pressure pump drives the heat exchange liquid to circularly control the temperature, the ultrasonic atomizer accurately humidifies through the steam pipeline, and the temperature and humidity sensor feeds back and adjusts in real time. After maintenance is completed, pressure relief and pipeline contraction facilitate lossless dismantling and reutilization, and residues are prevented from affecting the structural strength. By combining with multi-pipeline collaborative operation, the problems that the temperature and humidity of concrete are difficult to control in winter, and damage is large when a traditional embedded pipe is dismounted are solved, and efficient maintenance, environmental protection and economical efficiency are achieved.

Description

Technical Field

[0001] The present invention belongs to the field of building construction, and in particular relates to a device and method for seamless construction and maintenance of large-volume and ultra-long concrete in winter. Background Art

[0002] According to the definition of GB50496-2009 "Code for Construction of Large Volume Concrete", large volume concrete refers to large-volume concrete with the minimum geometric dimension of the concrete structure being not less than 1m, or concrete that is expected to cause harmful cracks due to temperature changes and shrinkage caused by hydration of cementitious materials in the concrete.

[0003] Existing large-volume, ultra-long concrete structures require steam and internal water cooling during winter construction to prevent cracks caused by temperature differential stress. For example, CN109372263B discloses a curing device and method for cooling and humidifying the interior of large-volume concrete. However, this device and method cannot allow concrete to enter during pouring, as this can easily cause blockage of some pipes, preventing effective humidification and cooling of the concrete interior. Summary of the Invention

[0004] The technical problems to be solved by the present invention are:

[0005] How to solve the problem of uneven and effective cooling and humidification inside large-volume concrete.

[0006] In order to solve the above technical problems, the inventors have come up with the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0007] A large-volume and ultra-long winter seamless construction and maintenance device for concrete, comprising:

[0008] Maintenance pipelines are pre-buried in the concrete structure and include a circulation pipeline. Capillary holes are evenly spaced around the circumference of the circulation pipeline. Separators corresponding to the positions of the capillary holes are evenly spaced around the inner circumference of the circulation pipeline. A steam pipeline is enclosed between the side of the separator facing the capillary holes and the inner wall of the circulation pipeline. A heat exchange pipeline is enclosed between the side of the separator facing away from the capillary holes and the inner wall of the circulation pipeline. An elastic diaphragm is provided on the side of the separator facing the inner wall of the circulation pipeline. An air bag pipeline is enclosed between the elastic diaphragm and the separator.

[0009] Temperature sensor 1 and humidity sensor 1 are pre-buried in the concrete structure, with a distance of 5-10 cm from the circulation pipeline;

[0010] Reflux tank 1, which is connected to switch valve 4 through pipeline 1 and then connected to one end of the heat exchange pipeline;

[0011] The pressure pump and the switch valve 1 are connected through the pipeline 2 and the switch valve 1, and then connected to the other end of the heat exchange pipeline;

[0012] The pressure pump, the ultrasonic atomizer and the switch valve 2 are connected through the pipeline 3, and then connected to the steam pipeline, and connected to the reflux tank 2 through the pipeline 4;

[0013] The air pump and the switch valve three are connected through the pipeline five and then connected to the air bag pipeline.

[0014] In a further optimized solution, a flexible sealing structure is provided inside the circulation pipeline, and the flexible sealing structure corresponds to the position of the capillary through hole.

[0015] In a further optimized solution, the circulation pipeline is a flexible pipeline and a pressure sensor is provided in the heat exchange pipeline.

[0016] In a further optimized solution, the curing device further includes an insulating left plate and an insulating right plate located on both sides of the concrete, each of which is provided with a heat exchange chamber connected to a heat exchange pipeline, a steam chamber connected to a steam pipeline, and an air bag chamber connected to an air bag pipeline;

[0017] The top of the left insulation plate is provided with a connector 1 connected to the switch valve 1, a connector 2 connected to the switch valve 2, and a connector 3 connected to the switch valve 3;

[0018] The top of the insulation right side plate is provided with a joint 4 connected to the switch valve 4 and a joint 5 connected to the pipeline 4;

[0019] A second temperature sensor and a second humidity sensor are provided on the side of the insulation right side plate and the insulation left side plate relative to the concrete structure.

[0020] In a further optimized solution, the concrete structure is installed with a temperature measuring tube with a heat-conducting metal sealing plate at the bottom, and a temperature sealing sleeve, a pressure ring, a clamping ring, a lower pressure ring and a temperature measuring rod are installed in the temperature measuring tube. The temperature measuring tube is inserted into the pressure ring, the clamping ring and the temperature sealing sleeve. The clamping ring, the pressure ring and the temperature sealing sleeve are arranged from top to bottom, and the lower pressure ring is fixed on the outside of the temperature measuring rod. A guide groove and a constraint groove distributed below the guide groove are provided in the temperature measuring tube, and a connecting protrusion is provided on the outer peripheral surface of the lower pressure ring. The connecting protrusion and the constraint groove and the guide groove are slidably adapted. A spring member sleeved on the outside of the temperature measuring rod is distributed between the clamping ring and the pressure ring. The bottom of the temperature measuring rod is used to install a temperature sensor.

[0021] In a further optimized solution, the pressure ring includes an upper ring body and a lower petal body, and the lower petal body has multiple groups distributed circumferentially.

[0022] In a further optimized solution, a conical pressure ring surface is provided at the inner top of the pressure ring, and the inner diameter of the top of the pressure ring surface is greater than the inner diameter of the bottom.

[0023] In a further optimized solution, the temperature-sealing sleeve is a heat-insulating rubber sleeve with a larger bottom and a smaller top, and the top of the heat-insulating rubber sleeve extends into the pressure ring surface.

[0024] A method for seamless construction and curing of large-volume and ultra-long concrete in winter, using the curing device as described above, with the following curing steps:

[0025] Step 1: Install the pre-buried pipelines, temperature measuring tubes, and humidity sensors

[0026] Install insulation left and right panels on both sides of the concrete structure, install a steel frame between the insulation left and right panels, and install maintenance pipelines, temperature measuring tubes and humidity sensors on the steel frame;

[0027] Connect the heat exchange pipeline to the heat exchange chamber, the steam pipeline to the steam chamber, the air bag pipeline to the air bag chamber, the pressure pump, ultrasonic atomizer, and air pump through the corresponding pipelines and corresponding switch valves, and each switch valve is connected to the corresponding connector to form a maintenance pipeline system;

[0028] Step 2, Preparation

[0029] Keep the on-off valve 4 in the closed state, and the pressure pump supplies the heat exchange medium into the heat exchange pipeline until the pressure value detected by the pressure sensor reaches the set value, switch the on-off valve 1 to the closed state, and the pressure pump stops working;

[0030] The air pump supplies air into the airbag pipeline until the elastic diaphragm is tightly attached to the inner wall of the flexible sealing structure, and the switch valve 3 is switched to the closed state;

[0031] Pour concrete and carry out curing after tamping and vibration;

[0032] Step 3: Install the temperature sensor

[0033] Install the temperature sensor 1 at the bottom of the temperature measuring rod, fix the lower pressure ring on the outside of the temperature measuring rod, install the temperature measuring rod and the lower pressure ring into the temperature measuring tube, pass through the connecting protrusion and go down along the guide groove until the temperature sensor 1 contacts the heat-conducting metal sealing sheet, and rotate the lower pressure ring to limit the axial direction of the connecting protrusion by the constraint groove;

[0034] Step 4, maintenance

[0035] When the temperature difference detected by temperature sensor 1 and temperature sensor 2 exceeds the set requirement, switch valve 1 and switch valve 4 are switched to the open state, and the pressure pump is turned on to supply heat exchange medium into the heat exchange pipeline and then return it to the reflux tank 1 until the temperature difference meets the set requirement. Then, switch valve 1 and switch valve 4 are switched to the closed state and the pressure pump stops working;

[0036] When the humidity value detected by the humidity sensor is lower than the set requirement, the switch valve 3 is switched to the open state, and the ultrasonic atomizer and the pressure pump are turned on at the same time to deliver steam to the steam pipeline until the humidity value detected by the humidity sensor returns to the set requirement. The switch valve 2 is switched to the closed state, and the pressure pump and ultrasonic atomizer stop working. At the same time, the air pump is turned on to deliver air to the air bag pipeline, so that the elastic diaphragm is tightly attached to the inner wall of the flexible sealing structure again.

[0037] Step 5: Remove the left and right insulation panels and maintenance pipelines

[0038] After the maintenance work is completed, the pressure pump, ultrasonic atomizer, and air pump are connected through the corresponding pipelines and corresponding switch valves, and each switch valve is connected to the corresponding joint, and then the insulation left plate, insulation right plate and circulation pipeline are separated;

[0039] The pressure inside the circulation pipeline is released, the circulation pipeline and the concrete structure are in a loose state, the circulation pipeline is pulled out axially, and dense mortar is re-injected into the concrete structure.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The present invention adopts a circulation pipeline and utilizes capillary holes evenly spaced around the side of the circulation pipeline to perform humidification when humidification is needed. During the concrete pouring and internal cooling process, the air bag pipeline pressure elastic diaphragm is pressed against the flexible sealing structure to ensure that it is closed to prevent the entry of concrete and to ensure that the heat exchange pipeline clock and the concrete are in close contact. At the same time, the circulation loop is depressurized after the concrete curing is completed. Since high pressure is used to maintain rigidity before pouring and the pressure is released during dismantling, the circulation pipeline is reduced in size to facilitate separation from the concrete and can be reused. It also avoids the difference in physical properties between the subsequent concrete and the circulation pipeline. The cooling pipe remaining in the concrete will also affect the strength of the concrete.

[0042] The present invention adopts a replaceable temperature measuring structure to solve the problem that the traditional embedded temperature measuring method cannot be replaced in time when encountering a fault during maintenance. The lower petal of the pressure ring acts on the pressure ring surface to seal the temperature sealing sleeve on the temperature measuring rod, thereby ensuring the accuracy of the temperature measurement, and at the same time making it convenient to replace the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 is a cross-sectional view of the maintenance pipeline of the present invention;

[0045] Figure 3 Schematic diagram of the internal structure of the temperature measuring tube of the present invention;

[0046] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0047] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0048] Figure 6 for Figure 4 Schematic diagram of the structure of the middle and lower pressure rings;

[0049] Figure 7 for Figure 4 Schematic diagram of the structure of the middle clamping ring. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0052] Example 1

[0053] like Figure 1 and Figure 2 As shown, a large-volume and ultra-long concrete seamless construction and maintenance device in winter includes:

[0054] Maintenance pipeline 10, which is pre-buried in the concrete structure, includes a circulation pipeline. Capillary holes 11 are evenly spaced around the circumference of the circulation pipeline. Separators 12 corresponding to the positions of the capillary holes 11 are evenly spaced around the inner circumference of the circulation pipeline. A steam pipeline is enclosed between the side of the separator 12 facing the capillary holes 11 and the inner wall of the circulation pipeline. A heat exchange pipeline is enclosed between the side of the separator 12 facing away from the capillary holes 11 and the inner wall of the circulation pipeline. An elastic diaphragm 13 is provided on the side of the separator 12 facing the inner wall of the circulation pipeline. An air bag pipeline is enclosed between the elastic diaphragm 13 and the separator 12.

[0055] Temperature sensor 20 and humidity sensor 30 are pre-buried in the concrete structure, with a distance of 5-10 cm from the circulation pipeline;

[0056] Reflux tank 1 40, which is connected to switch valve 4 41 through pipeline 1 and then connected to one end of the heat exchange pipeline;

[0057] The pressure pump 50 and the switch valve 1 51 are connected through the pipeline 2 and the switch valve 1 51 and then connected to the other end of the heat exchange pipeline;

[0058] The pressure pump 60, the ultrasonic atomizer 61 and the second switch valve 62 are connected to the pressure pump 60 through the pipeline 3 and the ultrasonic atomizer 61 and the second switch valve 62, and then connected to the steam pipeline, and connected to the reflux tank 2 110 through the pipeline 4;

[0059] The air pump 70 and the switch valve three 71 are connected to each other through the pipeline five and then connected to the airbag pipeline.

[0060] like Figure 2 As shown, a flexible sealing structure 14 is provided inside the circulation pipeline. The flexible sealing structure 14 can be an elastic rubber pad. The positions of the flexible sealing structure 14 and the capillary through hole 11 correspond to each other.

[0061] The circulation pipeline is a flexible pipeline and a pressure sensor 15 is provided in the heat exchange pipeline to detect the pressure in the heat exchange pipeline.

[0062] The curing device also includes an insulating left plate 80 and an insulating right plate 90 located on both sides of the concrete. The insulating left plate 80 and the insulating right plate 90 are both provided with a heat exchange chamber 81 connected to the heat exchange pipeline, a steam chamber 82 connected to the steam pipeline, and an air bag chamber 83 connected to the air bag pipeline; the air bag chamber 83 is provided with a passage for the steam pipeline and the heat exchange pipeline to pass through, and the steam chamber 82 is also provided with a passage for the heat exchange pipeline to pass through.

[0063] The top of the insulation left side plate 80 is provided with a connector 1 connected to the switch valve 1 51, a connector 2 connected to the switch valve 2 62, and a connector 3 connected to the switch valve 3 71;

[0064] The top of the insulation right side plate 90 is provided with a connector 4 connected to the switch valve 41 and a connector 5 connected to the pipe 4, and the air bag compartment on the right side is a closed structure;

[0065] A second temperature sensor 84 and a second humidity sensor 85 are installed on the side of the insulated right side panel 90 and the insulated left side panel 80 facing the concrete structure. These sensors detect the temperature and humidity of the concrete side. Based on the internal temperature and humidity differences, the system module automatically compares and determines the cooling and humidification logic.

[0066] Example 2

[0067] In Example 1, Figures 1 to 7 As shown, the concrete structure is equipped with a temperature measuring tube 100 with a heat-conducting metal sealing sheet at the bottom, and a temperature sealing sleeve 101, a pressure ring 102, a holding ring 103, a lower pressure ring 104 and a temperature measuring rod 105 are installed in the temperature measuring tube 100. The temperature measuring tube 100 is inserted into the pressure ring 102, the holding ring 103 and the temperature sealing sleeve 101. The holding ring 103, the pressure ring 102 and the temperature sealing sleeve 101 are arranged from top to bottom, and the lower pressure ring 104 is fixed on the temperature measuring tube 100. On the outside of the rod 105, a guide groove 106 and a constraint groove 107 distributed below the guide groove 106 are provided in the temperature measuring tube 100, and a connecting protrusion 108 is provided on the outer peripheral surface of the lower pressure ring 104. The connecting protrusion 108 is slidably adapted to the constraint groove 107 and the guide groove 106. A spring part 109 is distributed between the clamping ring 103 and the pressure ring 102 and is sleeved on the outside of the temperature measuring rod 105. The bottom of the temperature measuring rod 105 is used to install the temperature sensor 20.

[0068] The end of the temperature measuring rod 105 is provided with a sliding shaft groove 110, in which an elastic body 111 and a sliding plate 112 are installed, and a movable rod 113 is installed on the sliding plate 112. The end of the movable rod 113 extends to the outside of the sliding shaft groove 110 and is connected to a connecting piece 114, which is used to install the temperature sensor 20.

[0069] The pressure ring 102 includes an upper ring body 1021 and a lower petal body 1022 , and the lower petal body 1022 is distributed in multiple groups along the circumference.

[0070] A conical pressure ring surface is provided at the inner top of the pressure ring 102 , and the inner diameter of the top of the pressure ring surface is greater than the inner diameter of the bottom.

[0071] The temperature-sealing sleeve 101 is a heat-insulating rubber sleeve with a large bottom and a small top, and the top of the heat-insulating rubber sleeve extends into the pressure ring surface.

[0072] The lower pressure ring 104 is fixedly sleeved on the outside of the temperature measuring rod 105, and the distance from the top of the temperature measuring rod 105 is adjusted to ensure that when the connecting protrusion 108 is in the constraint groove 107, the thermal conductive metal sealing piece temperature sensor 20 is in contact, and the connecting protrusion is pushed down along the guide groove 106 into the constraint groove 107 by pressing the temperature measuring rod 105. The connecting protrusion 108 is rotated to a certain angle to enter the constraint groove 107. During the downward movement of the temperature measuring rod, the lower petal 1022 will be driven to hold the internal temperature sealing sleeve 101 tightly and seal it on the outside of the temperature measuring rod 102 under the action of the pressure ring surface, ensuring the accuracy of temperature measurement. When it needs to be removed, the temperature measuring rod 102 is rotated in the opposite direction to remove the connecting protrusion 108 from the constraint groove 107. After removal, the elastic force of the spring member 109 resets the temperature measuring rod 105 and separates it from the temperature sealing sleeve 101. After the curing is completed, the temperature sensor 20 is removed and the interior is filled with dense concrete slurry.

[0073] like Figures 1 to 7 As shown, a method for seamless construction and curing of large-volume and ultra-long concrete in winter, using the curing device, the curing steps are as follows:

[0074] Step 1: Install the pre-buried pipeline, temperature measuring tube 100, and humidity sensor

[0075] Install an insulating left side plate 80 and an insulating right side plate 90 on both sides of the concrete structure, install a steel frame between the insulating left side plate 80 and the insulating right side plate 90, and install a maintenance pipeline 10, a temperature measuring tube 100 and a humidity sensor on the steel frame;

[0076] Connect the heat exchange pipe to the heat exchange chamber 81, the steam pipe to the steam chamber 82, the air bag pipe to the air bag chamber 83, and the pressure pump 50, ultrasonic atomizer 61, and air pump 70 through corresponding pipes and corresponding switch valves. Each switch valve is connected to the corresponding connector to form a maintenance pipe system.

[0077] Step 2, Preparation

[0078] Keep the on-off valve 41 in the closed state, and the pressure pump 50 supplies the heat exchange medium into the heat exchange pipeline until the pressure value detected by the pressure sensor 15 reaches the set value, then switch the on-off valve 1 51 to the closed state, and the pressure pump 50 stops operating;

[0079] The air pump 70 supplies air into the airbag pipeline until the elastic diaphragm 13 is tightly attached to the inner wall of the flexible sealing structure 14, and the switch valve 3 71 is switched to the closed state;

[0080] Pour concrete and carry out curing after tamping and vibration;

[0081] Step 3: Install the temperature sensor 20

[0082] The temperature sensor 20 is installed at the bottom of the temperature measuring rod 105. The lower pressure ring 104 is fixedly mounted on the outer side of the temperature measuring rod 105. The temperature measuring rod 105 and the lower pressure ring 104 are installed in the temperature measuring tube 100. The connecting protrusion 108 is lowered along the guide groove 106 until the temperature sensor 20 contacts the heat-conducting metal sealing sheet. The lower pressure ring 104 is rotated to axially limit the connecting protrusion 108 by the constraint groove 107.

[0083] Step 4, maintenance

[0084] When the temperature difference detected by the temperature sensor 20 and the temperature sensor 2 84 exceeds the set requirement, the switch valve 1 51 and the switch valve 4 41 are switched to the open state, and the pressure pump 50 is turned on to supply the heat exchange medium into the heat exchange pipe and then return it to the reflux tank 1 40 until the temperature difference meets the set requirement. Then the switch valve 1 51 and the switch valve 4 41 are switched to the closed state, and the pressure pump 50 stops working.

[0085] When the humidity value detected by the humidity sensor is lower than the set requirement, the switch valve 3 71 is switched to the open state, and the ultrasonic atomizer 61 and the pressure pump 60 are simultaneously turned on to deliver steam into the steam pipeline until the humidity value detected by the humidity sensor returns to the set requirement. The switch valve 2 62 is switched to the closed state, and the pressure pump 60 and the ultrasonic atomizer 61 stop working. At the same time, the air pump 70 is turned on to deliver air into the airbag pipeline, so that the elastic diaphragm 13 is tightly attached to the inner wall of the flexible sealing structure 14 again.

[0086] Step 5: Remove the insulation left side plate 80 and the insulation right side plate 90, and the maintenance pipeline 10

[0087] After the maintenance work is completed, the pressure pump 50, ultrasonic atomizer 61, and air pump 70 are connected through the corresponding pipelines and corresponding switch valves, and each switch valve is connected to the corresponding connector, and then the insulation left plate 80, the insulation right plate 90 and the circulation pipeline are separated;

[0088] The pressure inside the circulation pipeline is released, the circulation pipeline and the concrete structure are in a loose state, the circulation pipeline is pulled out axially, and dense mortar is re-injected into the concrete structure.

[0089] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A large-volume and ultra-long seamless construction and maintenance device for concrete in winter, characterized in that: include: A maintenance pipeline (10) is pre-buried in a concrete structure. The maintenance pipeline (10) includes a circulation pipeline. Capillary holes (11) are distributed at equal intervals around the circumference of the circulation pipeline. Separators (12) corresponding to the positions of the capillary holes (11) are distributed at equal intervals around the inner circumference of the circulation pipeline. A steam pipeline is formed between the side of the separator (12) facing the capillary holes (11) and the inner wall of the circulation pipeline. A heat exchange pipeline is formed between the side of the separator (12) facing away from the capillary holes (11) and the inner wall of the circulation pipeline. An elastic diaphragm (13) is provided on the side of the separator (12) facing the inner wall of the circulation pipeline. An air bag pipeline is formed between the elastic diaphragm (13) and the separator (12). The temperature sensor (20) and the humidity sensor (30) are pre-buried in the concrete structure, and the distance from the circulation pipeline is 5-10 cm; Reflux tank 1 (40), reflux tank 1 (40) is connected to switch valve 4 (41) through pipeline 1 and then connected to one end of the heat exchange pipeline; A pressure pump (50) and a switch valve (51) are connected to the pressure pump (50) through a second pipe and the switch valve (51) and then connected to the other end of the heat exchange pipe; The pressure pump (60), the ultrasonic atomizer (61) and the second switch valve (62) are connected to the pressure pump (60) through the third pipeline, the ultrasonic atomizer (61) and the second switch valve (62), and then connected to the steam pipeline, and connected to the second reflux tank (110) through the fourth pipeline; The air pump (70) and the switch valve three (71) are connected to each other through the pipeline five and the switch valve three (71) and then connected to the air bag pipeline.

2. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to claim 1, characterized in that: A flexible sealing structure (14) is provided inside the circulation pipeline, and the positions of the flexible sealing structure (14) and the capillary through hole (11) correspond to each other.

3. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to claim 1, characterized in that: The circulation pipeline is a flexible pipeline and a pressure sensor (15) is provided in the heat exchange pipeline.

4. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to claim 1, characterized in that: The curing device further comprises a heat-insulating left side plate (80) and a heat-insulating right side plate (90) located on both sides of the concrete, wherein the heat-insulating left side plate (80) and the heat-insulating right side plate (90) are both provided with a heat exchange chamber (81) connected to the heat exchange pipeline, a steam chamber (82) connected to the steam pipeline, and an air bag chamber (83) connected to the air bag pipeline; The top of the heat-insulating left side plate (80) is provided with a connector 1 connected to the switch valve 1 (51), a connector 2 connected to the switch valve 2 (62), and a connector 3 connected to the switch valve 3 (71); The top of the heat-insulating right side plate (90) is provided with a connector 4 connected to the switch valve 4 (41) and a connector 5 connected to the pipeline 4; A second temperature sensor (84) and a second humidity sensor (85) are provided on one side of the heat-insulating right side plate (90) and the heat-insulating left side plate (80) relative to the concrete structure.

5. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to any one of claims 1 to 4, characterized in that: The concrete structure is provided with a temperature measuring tube (100) with a heat-conducting metal sealing sheet at the bottom, and a temperature sealing sleeve (101), a pressure ring (102), a holding ring (103), a lower pressure ring (104) and a temperature measuring rod (105) are installed in the temperature measuring tube (100), the temperature measuring tube (100) is inserted into the pressure ring (102), the holding ring (103) and the temperature sealing sleeve (101), the holding ring (103), the pressure ring (102) and the temperature sealing sleeve (101) are arranged from top to bottom, and the lower pressure ring (104) is fixed on the temperature measuring rod (105). 05), a guide groove (106) and a constraint groove (107) distributed below the guide groove (106) are provided in the temperature measuring tube (100), a connecting protrusion (108) is provided on the outer peripheral surface of the lower pressure ring (104), the connecting protrusion (108) and the constraint groove (107) and the guide groove (106) are slidably adapted, a spring member (109) is distributed between the clamping ring (103) and the pressure ring (102) and is sleeved on the outside of the temperature measuring rod (105), and the bottom of the temperature measuring rod (105) is used to install a temperature sensor (20).

6. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to claim 5, characterized in that: The end of the temperature measuring rod (105) is provided with a sliding shaft groove (110), an elastic body (111) and a sliding plate (112) are installed in the sliding shaft groove (110), a movable rod (113) is installed on the sliding plate (112), and the end of the movable rod (113) extends to the outside of the sliding shaft groove (110) and is connected to a connecting piece (114), and the connecting piece (114) is used for installing the temperature sensor (20).

7. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to claim 6, characterized in that: The pressure ring (102) comprises an upper ring body (1021) and a lower petal body (1022), and the lower petal body (1022) is distributed in multiple groups in the circumferential direction.

8. A large-volume and ultra-long winter seamless construction and maintenance device for concrete according to claim 7, characterized in that: The inner top of the pressure ring (102) is provided with a conical pressure ring surface, and the inner diameter of the top of the pressure ring surface is greater than the inner diameter of the bottom.

9. A large-volume and ultra-long concrete seamless construction and maintenance device in winter according to claim 8, characterized in that: The temperature-sealing sleeve (101) is a heat-insulating rubber sleeve with a larger bottom and a smaller top, and the top of the heat-insulating rubber sleeve extends into the pressure ring surface.

10. A method for seamless construction and curing of large-volume and ultra-long concrete in winter, using the curing device according to any one of claims 1 to 9, characterized in that: The maintenance steps are as follows: Step 1: Install the pre-buried pipeline, temperature measuring tube (100), and humidity sensor Installing a heat-insulating left side plate (80) and a heat-insulating right side plate (90) on both sides of the concrete structure, installing a steel frame between the heat-insulating left side plate (80) and the heat-insulating right side plate (90), and installing a maintenance pipeline (10), a temperature measuring tube (100) and a humidity sensor on the steel frame; The heat exchange pipeline is connected to the heat exchange chamber (81), the steam pipeline is connected to the steam chamber (82), the air bag pipeline is connected to the air bag chamber (83), the pressure pump (50), the ultrasonic atomizer (61), and the air pump (70) are connected through corresponding pipelines and corresponding switch valves, and each switch valve is connected to a corresponding joint to form a maintenance pipeline system; Step 2, Preparation The switch valve 4 (41) is kept in a closed state, and the pressure pump (50) supplies the heat exchange medium into the heat exchange pipeline until the pressure value detected by the pressure sensor (15) reaches the set value, and the switch valve 1 (51) is switched to a closed state, and the pressure pump (50) stops operating; The air pump (70) supplies air into the airbag pipeline until the elastic diaphragm (13) is tightly attached to the inner wall of the flexible sealing structure (14), and the switch valve (71) is switched to the closed state; Pour concrete and carry out curing after tamping and vibration; Step 3: Install the temperature sensor (20) The temperature sensor (20) is installed at the bottom of the temperature measuring rod (105), and a lower pressure ring (104) is fixedly mounted on the outer side of the temperature measuring rod (105). The temperature measuring rod (105) and the lower pressure ring (104) are installed in the temperature measuring tube (100). The temperature sensor (20) is moved downward along the guide groove (106) through the connecting protrusion (108) until the temperature sensor (20) contacts the heat-conducting metal sealing sheet. The lower pressure ring (104) is rotated to limit the connecting protrusion (108) in the axial direction by the constraint groove (107). Step 4, maintenance When the temperature difference detected by the temperature sensor (20) and the temperature sensor 2 (84) exceeds the set requirement, the switch valve 1 (51) and the switch valve 4 (41) are switched to the open state, the pressure pump (50) is turned on to supply the heat exchange medium into the heat exchange pipeline, and then returns to the reflux tank 1 (40) until the temperature difference meets the set requirement, the switch valve 1 (51) and the switch valve 4 (41) are switched to the closed state, and the pressure pump (50) stops working; When the humidity value detected by the humidity sensor is less than the set requirement, the switch valve 3 (71) is switched to the open state, and the ultrasonic atomizer (61) and the pressure pump (60) are simultaneously turned on to deliver steam into the steam pipeline until the humidity value detected by the humidity sensor returns to the set requirement, the switch valve 2 (62) is switched to the closed state, and the pressure pump (60) and the ultrasonic atomizer (61) stop working, and the air pump (70) is turned on to deliver air into the airbag pipeline, so that the elastic diaphragm (13) is again tightly attached to the inner wall of the flexible sealing structure (14); Step 5: Remove the left insulation plate (80), the right insulation plate (90), and the maintenance pipeline (10). After the maintenance work is completed, the pressure pump (50), ultrasonic atomizer (61), and air pump (70) are connected through corresponding pipelines and corresponding switch valves, and each switch valve is connected to the corresponding connector, and then the insulation left plate (80), insulation right plate (90) and circulation pipeline are separated; The pressure inside the circulation pipeline is released, the circulation pipeline and the concrete structure are in a loose state, the circulation pipeline is pulled out axially, and dense mortar is re-injected into the concrete structure.

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