A steam curing method for concrete poles

Abstract

This application relates to the technical field of concrete pole production, and specifically discloses a cellar pool in a steam curing method for concrete poles, including a cover plate for closing the cellar pool and a vertically arranged steam pipe for supplying steam into the cellar pool. The steam pipe is arranged at one end of the short side of the cellar pool, and an exhaust pipe for exhausting gas is arranged on one side of the long side of the cellar pool; a control device for controlling the steam discharge is installed in the exhaust pipe; a waste heat recovery pipe is installed inside the inner side wall of the short side of the cellar pool, and an air duct that can communicate with the waste heat recovery pipe is opened inside the cover plate; in step 3, the constant temperature inside the cellar pool is raised to 89°C; the constant temperature time is shortened to 2 hours. The purpose of this patent is to solve the problem that when the number of cellar pools is small, during the constant temperature stage, when the steam at a constant temperature of 85°C is used for steam curing of the poles, the production time of the poles is long, the subsequent demoulding time will also be correspondingly extended, and the production capacity is relatively low.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete pole production, and particularly relates to a steam curing method for concrete poles. Background Art

[0002] Cement poles, commonly known as electric poles, can also be called concrete poles. Concrete poles are processed from concrete, steel bars, and steel wires through multiple processes. As a structure for supporting power cables to facilitate power or telecommunications transmission, concrete poles are mainly used in power grid and communication construction.

[0003] The production process of concrete poles generally includes several steps such as skeleton production, concrete mixing, concrete pumping, centrifugal forming, steam curing, and demolding.

[0004] In the step of steam curing, a gantry crane is used to transfer the centrifugally formed poles into the steam curing cellar. Steam is introduced into the cellar through pipes, and the steam source is generally provided by a boiler. At this time, the concrete poles placed in the cellar for steam curing will go through the following four stages.

[0005] Resting stage: The resting stage, also known as the pre-curing period, pre-set period, or standing period, is a period of time for the concrete poles to be placed in the atmospheric environment after being formed and before the start of steam curing. This stage mainly ensures that the cement in the concrete has undergone a certain degree of hydration and has a certain structural strength to prevent the concrete volume expansion during the heating period from damaging the structure.

[0006] Heating stage: If the early pre-curing time of the poles is longer and the initial structural strength is higher, the heating rate can be increased accordingly; otherwise, the heating should be slow. In this stage, the concrete strength increases, and sufficient constant temperature time and corresponding constant temperature are required. Otherwise, the designed strength cannot be achieved.

[0007] Constant temperature stage: The main control parameters in the constant temperature stage are the constant temperature and the constant temperature time. For cement and concrete products, the higher the temperature and the longer the curing time in the constant temperature stage, the higher the strength of the poles will be ultimately. However, too high a constant temperature and too long a heat curing time will cause loss of the poles' later strength or damage to other properties. Therefore, choosing an appropriate constant temperature is very important for the steam curing process.

[0008] Cooling stage: In the cooling stage, the steam should be stopped slowly, the temperature should be reduced evenly, and the humidity should be maintained. The time used is determined according to the production cycle, and the longer the cooling stage time, the better.

[0009] Several concrete pedestals for supporting electric poles are usually poured at the bottom of the curing pit. Steam pipes are arranged between the pedestals. The steam pipes are installed at the bottom of the curing pit, and steam enters the curing pit to steam-cure the concrete electric poles. When the electric poles are under steam curing, during the constant temperature stage, the temperature is 85°C, and it needs to be kept at a constant temperature for 3 to 3.5 hours before removal. In some enterprises with limited factory buildings, the number of curing pits used is limited, resulting in relatively low production capacity. At the same time, when the steam curing pit steam-cures the electric poles, some residual heat will dissipate from the surface of the cover of the curing pit, causing heat loss; secondly, since steam is used during steam curing, liquefaction will occur inside the curing pit. The water stays in the curing pit for a long time and will mix with the concrete dripping from the formwork, making the bottom of the curing pit difficult to clean.

[0010] In the published document with the publication number CN207736495U, a steam curing pit for concrete cement electric poles is disclosed. An outlet is provided at the bottom of the pool body near the pool cavity, and an air outlet communicating with the ventilation cavity is also provided on the pool body. A cushion layer is detachably installed at the bottom of the pool cavity, and a plurality of water outlet holes are provided on the cushion layer.

[0011] In the above solution, by setting the outlet, the water liquefied from the steam at the bottom of the pool cavity is easy to flow out through the outlet pipe at the bottom of the pool cavity with the concrete. A sedimentation tank and a filter are provided on the outlet pipe, so that the liquid is filtered to prevent solid particles in the liquid from blocking the outlet pipe and causing pollution to the outside. However, when steam-curing the electric poles, in some enterprises with limited factory areas, the number of curing pits for steam curing is not large, and the temperature during constant temperature is 85°C, and it needs to be kept at a constant temperature for 3 to 3.5 hours before removal. For such enterprises, the production time of the electric poles is relatively long and the production capacity is relatively low. Summary of the Invention

[0012] Aiming at the deficiencies of the prior art, the present invention provides a steam curing method for concrete electric poles, which solves the problems that when the number of curing pits is small, during the constant temperature stage, when the electric poles are steam-cured with steam at a constant temperature of 85°C, the production time of the electric poles is relatively long, the subsequent demoulding time will also be correspondingly extended, and the production capacity is relatively low.

[0013] In order to solve the above problems, the technical solution adopted by the present invention is:

[0014] A steam curing method for concrete electric poles includes the following steps:

[0015] Step 1: Place the concrete electric poles that have been grouted and centrifugally formed in the atmospheric environment and let them stand for 1.5 hours;

[0016] Step 2: Use the overhead crane to transfer the static pole to the support in the pit, then use the overhead crane to close the top of the pit with the cover plate. Then, send steam into the steam pipeline through the screw steam compressor and introduce steam into the pit for steam curing. At this time, raise the temperature in the pit from room temperature to 60 °C and maintain 60 °C for 1 hour.

[0017] Step 3: After the temperature rise is completed, enter the constant temperature stage, raise the temperature to 87 - 89 °C, and maintain it for 2 hours for constant temperature.

[0018] Step 4: After the constant temperature stage is completed, lower the temperature in the pit to room temperature. In summer and autumn, the cooling rate should be controlled at about 25 °C per hour; in spring and winter, it should be controlled at about 15 °C per hour.

[0019] Step 5: After the temperature in the pit has dropped, open the cover plate on the top of the pit, use the overhead crane to take out the steam-cured pole for demoulding, and spray warm water on the demoulded pole for curing.

[0020] The principle of this solution is as follows:

[0021] When steam-curing the pole in the pit, the control system will close the drain pipe, and at this time, the exhaust valve will also be closed. At the same time, with the entry of steam into the pit, during steam curing, the pressure in the pit will also rise. Using high-pressure steam curing speeds up the hardening speed of the cement, improves the turnover rate of the steel formwork, and shortens the production cycle; during the constant temperature stage of steam curing, by raising the constant temperature to 87 - 89 °C, while ensuring the strength of the pole, slightly increasing the constant temperature can also shorten the production time of the pole and increase the production capacity of the pole.

[0022] When exhaust is required after constant temperature, turn on the controller set in the exhaust pipeline. The controller discharges the steam in the pit. When the steam is discharged, the controller controls the drain pipe to open, and the water retained in the pit drains out from the drain pipe. The water in the pit flows into the collection cylinder for storage and is used for spray curing after the pole is demoulded to ensure the humidity of the concrete surface, thereby controlling the temperature gradient of the concrete, making the temperature gradient of the core concrete relatively gentle, not generating excessive temperature stress, and preventing cracks in the pole.

[0023] The beneficial effects of this solution are as follows:

[0024] 1. Compared with the prior art where the constant temperature is controlled at 85°C, maintaining a constant temperature of 85°C requires 3 to 3.5 hours in the constant temperature stage, resulting in a longer production time for electric poles. For some enterprises with fewer pits, the production capacity will be reduced. In the solution of this application, by raising the constant temperature to 87 - 89°C and slightly increasing the constant temperature, the time for constant temperature demoulding is greatly reduced, from 3 - 3.5 hours to 2 hours, increasing the production capacity.

[0025] Further, the pit cited in step 2 includes a cover plate for closing the pit and a vertically arranged steam pipe for supplying steam into the pit. It is characterized in that: the steam pipe is arranged at one end of the short side of the pit, and an exhaust pipe for exhausting gas is arranged on one side of the long side of the pit; a control device for controlling the steam discharge is installed in the exhaust pipe; a liquid discharge pipe for draining water is opened at the bottom of one end of the pit near the exhaust pipe, and the opening and closing of the liquid discharge pipe are controlled by a control system; a waste heat recovery pipe is installed inside the inner side wall of the short side of the pit, and an air duct that can communicate with the waste heat recovery pipe is opened inside the cover plate; in step 3, the constant temperature inside the pit is raised to 89°C; the constant temperature time is shortened to 2 hours; when steam enters the pit, part of the steam enters the air duct of the cover plate from the waste heat pipe, and the cover plate is assisted in heating by using the residual temperature.

[0026] Further, the pit cited in step 2 includes a cover plate for closing the pit and a vertically arranged steam pipe for supplying steam into the pit. The steam pipe is arranged at one end of the short side of the pit, and an exhaust pipe for exhausting gas is arranged on one side of the long side of the pit; a control device for controlling the steam discharge is installed in the exhaust pipe; a waste heat recovery pipe is installed inside the inner side wall of the short side of the pit, and an air duct that can communicate with the waste heat recovery pipe is opened inside the cover plate. After steam is introduced into the pit, the exhaust pipe is closed, and at this time, a high-temperature and high-pressure state will be formed inside the pit. When steam enters the pit, part of the steam will also enter the air duct inside the cover plate through the waste heat recovery pipe to heat the cover plate.

[0027] Furthermore, the control device is a valve controlled by an external controller. The valve is arranged on one side away from the inner wall of the cellar. A push plate that can slide axially along the exhaust pipe is installed in the exhaust pipe near the detection position. A horizontal through hole penetrates through the bottom of the push plate. A drain pipe for draining water is opened at the bottom of one end of the cellar near the exhaust pipe. The opening and closing of the drain pipe are controlled by a control system and is normally in a normally closed state. At the same time, a second switch for controlling the closing of the drain pipe and a first switch for controlling the opening of the drain pipe are fixed on the inner wall of the exhaust pipe. The first switch and the second switch are respectively arranged on both sides of the push plate. After the cellar is filled with steam, the cellar is in a high-temperature and high-pressure state at this time. The steam pushes the push plate to move towards the first switch and cross the first switch. When the constant temperature is completed and the steam in the cellar needs to be discharged, the controller controls the valve to open. At this time, the steam in the cellar is discharged through the valve. At the same time, the pressure in the cellar will decrease. The push plate moves in the exhaust pipe and touches the first switch. At this time, the drain pipe opens, and the liquefied water in the cellar is discharged from the drain pipe. When the push plate moves to the second switch, the drain pipe closes.

[0028] Furthermore, water tanks filled with water are opened on the side walls around the top of the cellar. The water tanks can be closely attached to the inner side of the cover plate. The water tanks filled with water play a role in water sealing when the cover plate closes the cellar. After the cover plate is closed, it is detected whether the cover plate seals the cellar by observing whether there are bubbles emerging in the water seal.

[0029] Furthermore, a drain groove is opened at the bottom of the cellar along the long side of the cellar. At the same time, the bottom of the cellar slopes towards the drain pipe. During the steam curing process, the liquefied water in the cellar will gather along the drain groove to the drain pipe. When the drain pipe is opened, the liquefied water can be discharged at the same time.

[0030] Furthermore, a collection cylinder is connected to the bottom end of the drain pipe. The water flows into the collection cylinder for storage after being discharged and is used for spray curing after the formwork of the electric pole is removed to ensure the humidity of the outer surface of the concrete, thereby controlling the temperature gradient of the concrete and preventing excessive temperature stress from occurring and preventing cracks in the electric pole.

[0031] Furthermore, uniformly distributed holes are opened on the side of the steam pipe to uniformly steam-cure the interior of the cellar.

[0032] Furthermore, uniformly distributed arc-shaped grooves are opened on the top surface of the support. Since multiple electric poles will be placed on the bottom electric pole, the grooves can be used to fix the electric poles in contact with the support, and the mold of the electric pole can be inserted into the grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a front view schematic diagram of the present invention;

[0034] Figure 2 is a side view schematic diagram of the present invention;

[0035] Figure 3 This is a schematic diagram of the control system of the present invention.

[0036] The reference numerals in the accompanying drawings of the specification include:

[0037] Cellar 1, cover plate 2, support 3, steam pipe 4, water seal 4-1, waste heat pipe 5, air duct 5-1, exhaust pipe 6, valve 6-1, first switch 7, second switch 7-1, push plate 8, rotating plate 8-1, spring 9, drain pipe 10, drain trough 10-1. Detailed implementation manners

[0038] The following is a further detailed description through specific implementation manners:

[0039] Taking... as an example, the drain pipe in... Figure 2 is installed at the left bottom end of the cellar 1, taking this as the direction basis. Figure 2 The basic implementation example is as shown in...

[0040] When steam curing the centrifugally formed concrete poles, the following steps are required: Figure 1 Step 1: Place the grouted and centrifugally formed concrete poles in the atmospheric environment and let them stand for 1.5 hours.

[0041] Step 2: Use a gantry crane to transfer the poles that have finished standing to the support 3 in the cellar 1, then use the gantry crane to close the top of the cellar 1 with the cover plate 2, and then use a screw steam compressor to transport steam into the steam pipe 4 and introduce steam into the cellar 1 for steam curing. At this time, let the temperature in the cellar 1 rise from room temperature to 60 °C and maintain it for 1 hour.

[0042] Step 3: After the temperature rise is completed, enter the constant temperature stage, raise the temperature to 87 °C, and maintain 87 °C in the cellar for 2 hours.

[0043] Step 4: After the constant temperature stage is completed, lower the temperature in the cellar 1 to room temperature. In summer and autumn, the cooling rate should be controlled at about 25 degrees Celsius per hour; in spring and winter, it should be controlled at about 15 degrees Celsius per hour.

[0044] Step 5: After the temperature in the cellar 1 has dropped, open the cover plate 2 covering the top of the cellar 1, use a gantry crane to take out the steam-cured poles for demoulding, and spray warm water on the demoulded poles for curing.

[0045] The cellar 1 used in step 2 is as shown in... to...

[0046] Step 5: After the temperature in the cellar 1 has dropped, open the cover plate 2 covering the top of the cellar 1, use a gantry crane to take out the steam-cured poles for demoulding, and spray warm water on the demoulded poles for curing.

[0047] The cellar 1 used in step 2 is as shown in... Figure 1 to... Figure 3As shown in the figure, five supports 3 for supporting concrete poles are cast at the inner bottom end of the cellar 1. The five supports 3 are perpendicular to the long side of the cellar 1 and are evenly distributed along the long side of the cellar 1. Four arc-shaped grooves are opened on the top surface of the support 3, and the side surface of the concrete pole mold can be clamped into the grooves for positioning. A vertical steam pipe 4 is fixed to the left side wall inside the cellar 1 by bolts. The top of the steam pipe 4 is interconnected with an external steam compressor, and the steam compressor provides steam to the cellar 1. Four evenly distributed air holes are opened on the surface of the steam pipe 4, and the steam enters the cellar 1 from the air holes in the steam pipe 4, so that the steam entering the cellar 1 is evenly distributed in the upper, middle and lower layers inside the cellar 1.

[0048] Waste heat pipes 5 are provided on the left and right side walls of the cellar 1. The waste heat pipes 5 are in a "Z" shape on the inner side wall of the cellar 1 and are connected to the inside of the cellar 1. The outlet of the waste heat pipe 5 extends to the top of both sides of the cellar 1. At the same time, an air duct 5-1 is provided inside the cover plate 2. The air inlet of the air duct 5-1 is provided on the left and right sides of the cover plate 2. When the cover plate 2 covers the top of the cellar 1, the waste heat pipe 5 is interconnected with the air duct 5-1. During steam curing in the cellar 1, the steam can enter the air duct 5-1 from the waste heat pipe 5 to heat the cover plate 2.

[0049] Grooves are provided on the side walls around the top of the cellar 1, and water is contained in the grooves. The water in the grooves plays the role of a water seal 4-1. When the cover plate 2 closes the cellar 1, the water seal 4-1 can detect whether the cellar 1 is completely sealed by the cover plate 2. During steam curing, by observing whether there are bubbles in the water in the grooves, if there are bubbles in the water in the grooves after the cover plate 2 is closed, it indicates that the cover plate 2 is not completely closed and there is pressure leakage from the side wall of the cover plate 2.

[0050] As shown in the attachment Figure 1 As shown in the figure, an exhaust pipe for discharging steam is provided on one side wall of the long side of the cellar 1. A valve 6-1 is provided at the end of the exhaust pipe away from the cellar 1, and the opening and closing of the valve 6-1 are controlled by an external controller. As shown in the attachment Figure 3 As shown in the figure, a push plate 8 that can slide in the exhaust pipe 6 is installed in the exhaust pipe. A through hole horizontally penetrating is opened at the lower part of the push plate 8. At the same time, a spring 9 is fixedly connected to the upper right part of the push plate 8. One end of the spring 9 is fixedly connected to the push plate 8, and a fixed block is fixed at the other end of the spring 9. The top surface of the fixed block is welded to the inner top wall of the exhaust pipe 6. When the inside of the cellar 1 is at high temperature and high pressure, part of the steam will enter the pipe. In step 4, the valve 6-1 is opened by an external controller to discharge the steam in the cellar 1. At this time, as the pressure in the cellar 1 disappears, the push plate 8 moves a short distance towards the valve 6-1, and then the push plate 8 moves a distance away from the valve 6-1 under the action of the spring 9.

[0051] On the left and right sides of the bottom support 3 of the cellar 1, there are drainage grooves 10-1 for draining water. The drainage grooves 10-1 extend from one side close to the exhaust pipe 6 to the other side. A drain pipe 10 is fixedly connected to the side of the drainage groove 10-1 away from the steam pipe 4. The drain pipe 10 is normally in a normally closed state. At the same time, the bottom ground of the cellar 1 slopes 3° towards the drain pipe 10; during the steam curing process, the steam inside the cellar 1 will liquefy. The liquefied water is discharged from the drainage groove 10-1 into the drain pipe 10, and a solenoid valve is arranged inside the drain pipe 10.

[0052] A first switch 7 and a second switch 7-1 are fixedly arranged inside the exhaust pipe 6. Both the first switch 7 and the second switch 7-1 are contact switches. The first switch 7 is installed on the left side of the push plate 8. The first switch 7 is an inclined wedge. A spring is fixedly connected to the bottom end of the first switch 7. The second switch 7-1 is installed on the right side of the push plate 8. The first switch 7 controls the opening of the solenoid valve of the drain pipe 10, and the second switch 7-1 controls the closing of the solenoid valve of the drain pipe 10; a vertical rotating plate 8-1 is hinged to the middle of the right side of the push plate 8. When the push plate 8 moves towards the first switch 7, the push plate 8 crosses the first switch. At this time, the rotating plate 8-1 also crosses the first switch, and the rotating plate 8-1 will rotate along the hinge point. Due to the action of the rotating plate 8-1, it will not press on the first switch; when the steam is discharged from the exhaust pipe 6, the push plate 8 moves towards the right side of the exhaust pipe 6 under the action of the spring 9. At this time, the rotating plate 8-1 will squeeze the inclined surface of the first switch 7, and the bottom spring of the first switch 7 will move downward. At this time, the first switch 7 is triggered, and the second switch 7-1 controls the opening of the solenoid valve of the drain pipe 10 to drain the water in the cellar 1. During the movement of the push plate 8, the time when the push plate 8 moves between the first switch 7 and the second switch 7-1 is the opening time of the drain pipe 10. A collection barrel for water is connected to the outlet of the drain pipe 10. The collection barrel is not drawn in the drawings. The warm water stored in the collection barrel can be used for spraying and curing the electric poles just after demoulding.

[0053] Example two: Different from the above-mentioned example one, during the constant temperature stage, the temperature inside the cellar 1 is raised to 89 °C, and at the same time, the constant temperature time is maintained for 2 hours.

[0054] Example three: Different from the above-mentioned example one, during the constant temperature stage, the temperature inside the cellar 1 is raised to 88 °C, and at the same time, the constant temperature time is maintained for 2 hours.

[0055] The specific implementation process is as follows:

[0056] Concrete poles that have been centrifugally formed and left to stand are placed in the cellar 1. 30 concrete poles can be placed in one cellar 1 for steam curing. After the poles are placed, the cover plate 2 is placed on the top of the cellar 1 to close the cellar 1. Steam is poured into the cellar 1 through the steam pipe 4. Under the action of the steam, the inside of the cellar 1 is in a state of high temperature and high pressure. While steam is poured into the cellar 1, part of the steam enters the exhaust pipe 6. The steam pushes the push plate 8, and the push plate 8 moves and passes the first switch 7. The temperature in the cellar 1 is controlled by controlling the amount of steam discharged. The temperature sensor in the cellar 1 can monitor the temperature at any time to keep the temperature in the cellar 1 at a certain state.

[0057] After the constant temperature reaches 2 hours, the valve 6-1 of the exhaust pipe 6 is opened, and the steam is discharged from the cellar 1. At this time, the efficiency in the cellar 1 gradually decreases and is consistent with the external air pressure. The push plate in the drainage pipe 10 moves toward the second switch 7-1 under the action of the spring 9, and the push plate 8 moves from the first switch 7 to the second switch 7-1. The first switch 7 controls the drainage pipe 10 to open, and the second switch 7-1 controls the drainage pipe 10 to close. At this time, the water in the cellar 1 is discharged.

[0058] After raising the constant temperature from 85°C to 87°C, the constant temperature time was reduced from 3 hours to 2 hours, which accelerated the production efficiency of the poles and further improved production capacity.

[0059] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A steam curing method for concrete poles, characterized in that: It includes the following steps: Step 1: Place the grouted and centrifugally formed concrete pole in the atmospheric environment and let it stand for 1.5 hours; Step 2: Use a truss crane to transfer the pole that has finished standing to the support in the cellar, then use the truss crane to close the top of the cellar with a cover plate, and then send steam into the steam pipeline through a screw steam compressor and introduce steam into the cellar for steam curing. At this time, let the temperature in the cellar rise from room temperature to 55°C - 65°C, and maintain the elevated temperature for 1 hour - 2 hours; Step 3: After the temperature rise is completed, enter the constant temperature stage, raise the temperature to 87 - 89 degrees Celsius, and maintain it for 2 hours for constant temperature; Step 4: After the constant temperature stage is completed, lower the temperature in the cellar to room temperature. In summer and autumn, the cooling rate should be controlled at 25 degrees Celsius per hour; in spring and winter, it should be controlled at 15 degrees Celsius per hour; Step 5: After the temperature in the cellar has dropped, open the cover plate covering the top of the cellar, use a truss crane to take out the steam-cured pole for demolding, and spray warm water on the demolded pole for curing; The cellar includes a cover plate for closing the cellar and a vertically arranged steam pipeline for supplying steam into the cellar. The steam pipeline is arranged on one short side of the cellar. At the same time, an exhaust pipeline for exhausting gas is arranged on one long side of the cellar; A control device for controlling the steam discharge is installed in the exhaust pipeline; A waste heat recovery pipe is installed on the inner side wall of the short side of the cellar, and an air duct that can communicate with the waste heat recovery pipe is opened inside the cover plate; The control device is a valve controlled by an external controller. The valve is arranged on the side away from the inner wall of the cellar. A push plate that can slide along the axial direction of the exhaust pipeline is installed in the exhaust pipeline near the detection position, and a horizontal hole penetrates through the middle of the push plate; A liquid discharge pipe for draining water is opened at the bottom of one end of the cellar near the exhaust pipeline, and the opening and closing of the liquid discharge pipe are controlled by a control system; A second switch for controlling the closing of the liquid discharge pipe and a first switch for controlling the opening of the liquid discharge pipe are fixed on the inner wall of the exhaust pipe. The first switch and the second switch are respectively arranged on both sides of the push plate.

2. The steam curing method of a concrete pole according to claim 1, characterized in that: Water troughs are opened on the side walls around the top of the cellar, and the water troughs are closely attached to the inner side of the cover plate.

3. A steam curing method for a concrete pole according to claim 1, characterized in that: A drainage trough arranged along the long side of the cellar is opened at the bottom of the cellar, and the bottom of the cellar slopes towards the liquid discharge pipe.

4. A steam curing method for a concrete pole according to claim 1, characterized in that: A collection barrel is connected to the bottom of the liquid discharge pipe.

5. A steam curing method for a concrete pole according to claim 1, characterized in that: Holes are evenly distributed on the side of the steam pipeline.

6. A steam curing method for a concrete pole according to claim 1, characterized in that: Arc-shaped grooves are evenly distributed on the top surface of the support.

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