CN217680675U - Temperature control device for mass concrete in winter - Google Patents
Temperature control device for mass concrete in winter Download PDFInfo
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- CN217680675U CN217680675U CN202221453642.3U CN202221453642U CN217680675U CN 217680675 U CN217680675 U CN 217680675U CN 202221453642 U CN202221453642 U CN 202221453642U CN 217680675 U CN217680675 U CN 217680675U
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Abstract
The utility model relates to a bulky concrete temperature regulating device in winter. Local heat exchange is inhomogeneous among the intelligent temperature control system of current bulky concrete, influences the concrete intensity. Therefore, the temperature control device for mass concrete in winter comprises a heat exchange steel pipe, a water pump, a water storage container, a steam boiler and a linkage reversing valve, wherein the heat exchange steel pipe is folded into a bidirectional accompanying pipe, the bidirectional accompanying pipe is folded and reciprocated on a matched concrete steel bar and then leads out a first connector and a second connector, a water outlet pipe of the water pump is provided with a circulating water main valve, a water outlet pipe between the circulating water main valve and the water pump is also provided with a branch pipe, the branch pipe is provided with a water valve for stirring and is connected with a hose, the side wall of the water storage container is provided with a thermometer and a glass window with scale lines or is provided with a liquid level meter, and the temperature control device further comprises a digital display instrument and a plurality of groups of temperature sensors. The utility model discloses can make bulky concrete solidify the shaping under basic balanced temperature, effectively guarantee its mechanical strength, the specially adapted is under construction winter.
Description
Technical Field
The utility model relates to a bulky concrete temperature regulating device in winter.
Background
The Chinese patent application with the publication number of CN113958143A, which is disclosed in 2022.01.21, discloses an intelligent temperature control system suitable for mass concrete and a construction method thereof. The invention is realized by the following technical scheme: the intelligent temperature control system comprises mass concrete and a cooling water pipe partially embedded in the mass concrete, wherein a plurality of temperature sensors are embedded in the mass concrete, the cooling water pipe comprises a water inlet and a water outlet, and also comprises a water pump connected with the water inlet and used for supplying water to the cooling water pipe and a control module used for adjusting the water supply amount of the water pump; the water outlet extends to the outside of the mass concrete, and the cooling water is discharged to the outer surface of the mass concrete from the water outlet after passing through the mass concrete.
The cooling water pipe close to the water inlet has large temperature difference with the cooling water pipe close to the water outlet, and the position is unchanged, thereby easily causing uneven local heat exchange cooling and influencing the strength of concrete.
Disclosure of Invention
The to-be-solved technical problem of the utility model is how to overcome prior art's above-mentioned defect, provide a big volume concrete temperature regulating device in winter.
For solving above-mentioned technical problem, this bulky concrete temperature regulating device in winter, including heat transfer steel pipe, water pump and retaining container, the iron wire ligature is fixed on the adapted concrete reinforcing bar for the heat transfer steel pipe, the inlet tube and the retaining container bottom of water pump communicate with each other, and the retaining container top is equipped with the filler pipe, is equipped with water valve, its characterized in that on the filler pipe: the water pump is characterized by also comprising a steam boiler and a linkage reversing valve, wherein a valve is arranged on a steam generating pipe of the steam boiler and is communicated with the water storage container, a branch pipe is also arranged on the steam generating pipe and is provided with a branch valve and connected to a handheld heating pipe through a hose, the heat exchange steel pipe is folded into a two-way accompanying pipe, the two-way accompanying pipe is folded and reciprocated on a matched concrete reinforcement and leads out a first connector and a second connector, a water outlet pipe of the water pump is provided with a circulating water main valve, a water outlet pipe between the circulating water main valve and the water pump is also provided with a branch pipe, a stirring water valve is arranged on the branch pipe and is connected with the hose, the linkage reversing valve comprises a first valve, a second valve, a third valve and a fourth valve, the four valves are ball valves or plug valves, valve cores of the four valves are respectively provided with valve handles, the outer ends of all the valve handles are hinged to a linkage rod, the first valve and the third valve are synchronously switched on/off, the second valve and the fourth valve are synchronously switched on the first valve, and the two ends of the first valve are respectively switched on the first connector and the water storage container; two ends of the second valve are respectively communicated with the first interface and the main circulating water valve; the second interface and the main circulating water valve are respectively communicated with the two ends of the third valve, the second interface and the water storage container are respectively communicated with the two ends of the fourth valve, and a thermometer and a glass window with scale marks or a liquid level meter are arranged on the water storage container.
So design, on the one hand at the concreting initial stage, through the circulating water of heat transfer steel pipe for its heating, keep warm, after concreting initial set generates heat, the circulating water of usable heat transfer steel pipe again is the cooling of deep concrete. And the water flow direction of the circulating water of the heat exchange steel pipe is changed at intervals by manually or automatically operating the linkage reversing valve, so that the water inlet position and the water return position are exchanged, the internal temperature of the concrete is more balanced, and the strength of the solidified concrete is improved.
Preferably, the middle section of the linkage rod is an optical axis, a linear bearing is sleeved on the optical axis, a nut is fixedly connected onto the linear bearing, the axis of the nut and the axis of the linear bearing are perpendicular (but not intersected), a screw rod is arranged on the nut, one end of the screw rod is fixed on an output shaft of a servo motor, the other end of the screw rod is fixed through the bearing, when the nut is at a stroke end point and a stroke starting point on the screw rod, a first valve is in an opening state and a closing state respectively, the servo motor is provided with a clock control circuit, the clock control circuit starts the servo motor every preset time t to drive the nut, the linear bearing connected with the screw rod and the linkage rod to move once between the stroke end point and the stroke starting point so as to drive the linkage reversing valve to reverse once, wherein the preset time t is not less than 0.5 hour and not more than 2 hours. By the design, automatic control is facilitated.
Preferably, the bidirectional accompanying pipe is folded and reciprocated on the matched concrete reinforcing bars to form a plurality of parallel straight pipe sections, and the parallel straight pipe sections are used as hollow main reinforcing bars and a plurality of solid main reinforcing bars perpendicular to the hollow main reinforcing bars to jointly form the main reinforcing bars of the matched concrete reinforcing bars. So design replaces partial main muscle with the heat transfer steel pipe, can save main muscle, reduce cost under the prerequisite of guaranteeing concrete member mechanical strength.
And as optimization, the system also comprises a digital display and a plurality of groups of temperature sensors, wherein each group of temperature sensors is electrically connected with the digital display, each group of temperature sensors comprises three 53-ohm copper thermocouples for measuring temperature, and iron wires are respectively bound at the upper, middle and lower parts of a corresponding temperature measuring area matched with concrete steel bars. By the design, the temperature changes of the upper, middle and lower parts of each temperature measuring area of the concrete are monitored in real time.
Utilize the utility model discloses carry out bulky concrete placement method winter, including following step:
(1) preparation: arranging matched concrete reinforcing bars, a water pump, a water storage container and matched concrete templates of the winter mass concrete temperature control device at corresponding positions of a construction site;
(2) slurry preparation: injecting enough water into a water storage container, opening a valve of a steam generating pipe of the water storage container, introducing steam into the water in the water storage container, heating the water in the water storage container by using the steam prepared by a steam boiler, opening a circulating water main valve when the water temperature of the water storage container reaches 75 ℃, supplying heat to a heat exchange steel pipe, mixing and stirring to prepare concrete mortar according to the proportion shown in the following table after the liquid level in the water storage container is stable, adding materials except the cement into a concrete mixer during stirring, simultaneously or then opening a water valve for stirring, adding a corresponding amount of water into the concrete mixer through a hose, uniformly stirring, finally adding a corresponding amount of cement, stirring into the concrete mortar, then opening a branch valve, holding a heating pipe by hand, introducing steam into the concrete mortar for heating and preserving heat so as to ensure that the mold-entering temperature of the concrete is not lower than 5 ℃ and not higher than 10 ℃,
(3) pouring: the concrete pouring adopts a mode of horizontal layering and layer-by-layer top-reaching, the construction takes the long direction as the pouring direction and the short direction as the pouring surface, a method of layered pouring, layered vibration and push type continuous pouring is adopted, the layering thickness is controlled to be 300-500 mm, the combination of upper and lower concrete among all pouring belts is ensured when each layer of concrete is poured, an inclined plane formed by the natural flowing of the concrete is utilized, the concrete is gradually poured in sequence, the top is reached once, the stop time of the upper and lower concrete pouring is not more than the initial setting time of the concrete, the concrete amount poured in each layer is not large, the heat dissipation of the concrete is rapid, the restraint between each layer is not large, the generation of temperature cracks is favorably prevented, in the construction process, the concrete pump placement is considered to ensure the balanced distribution, one layer of concrete is ensured to be poured before the initial setting, the vibration process of the concrete between the layers is adopted, the vibration process is controlled to be 2-3 hours after the pouring, the lower layer is inserted into the position of 5-15 cm during the vibration, the concrete is ensured to be compact, the temperature monitoring is carried out when the first time is carried out, the temperature monitoring is carried out when the temperature is carried out every 3 hours, the temperature measurement is carried out once, the temperature measurement stage every time is carried out when the temperature measurement is carried out once,
(4) heat preservation and maintenance: when the cooling measure is taken for the interior of the concrete, the maintenance and heat preservation measures of 'one cloth and one plastic' are also taken for the exposed surface of the concrete, namely, before the large-volume concrete is poured and initially set, the maintenance liquid is sprayed immediately, then the plastic film is adopted for covering, the outer side of the plastic film is covered by adopting cotton felt, the bottom plate of the template is covered by 3 layers of cotton felt, the covering thickness is not less than 40mm, the side surfaces of the shear wall and the column joint bar are maintained by the cotton felt and are bound and fixed by iron wires, the top surfaces of the upturned sections of the peripheral outer wall are covered by 2 layers of cotton felt in a filling manner, the backfilling condition is met, the backfilling and heat preservation are carried out in time, the slow cooling and slow drying of the concrete are ensured, the temperature difference between the interior and the exterior of the large-volume concrete is reduced, and the shrinkage cracks on the surface are prevented,
(5) drying and sealing the heat exchange steel pipe: after the maintenance, with the disconnection of the first interface of heat transfer steel pipe and second interface, blow off the inside water of heat transfer steel pipe with hot-blast to weather, then first interface and second interface are sealed with plug or welded mode, prevent the inside corrosion of heat transfer steel pipe, can. So design, do not receive inside and outside difference in temperature influence when can effectively guaranteeing bulky concrete placement in winter, make its whole solidification shaping under the temperature of basic equilibrium, effectively guaranteed the mechanical strength of concrete member, improve the construction quality of bulky concrete in winter.
The utility model discloses bulky concrete temperature regulating device accuse temperature convenience winter can make bulky concrete solidify the shaping under basic balanced temperature, has effectively guaranteed the mechanical strength of concrete member, the construction of specially adapted winter bulky concrete.
Drawings
The temperature control device for mass concrete in winter of the utility model is further explained by the following drawings:
FIG. 1 is a schematic diagram of forward rotation of circulating water of the temperature control device for mass winter concrete;
fig. 2 is a schematic diagram of the reverse rotation of circulating water of the temperature control device for mass winter concrete.
In the figure: the heat exchange device comprises a heat exchange steel pipe 1, a water pump 2, a water storage container 3, a water inlet pipe 4, a water adding pipe 5, a water adding valve 6, a steam generating pipe 7, a valve 8, a branch pipe 9, a branch valve 10, a hose 11, a heating pipe 12, a first connector A, a second connector B, a water outlet pipe 13, a circulating water main valve 14, a branch pipe 15, a stirring water valve 16, a first valve 17, a second valve 18, a third valve 19, a fourth valve 20, a valve handle 21, a linkage rod 22, a thermometer 23, a glass window 24, a linear bearing 25, a screw nut 26, a screw rod 27, a servo motor 28, a solid main rib 29, a parallel straight pipe section 101 and a bent pipe section 102 of the heat exchange steel pipe 1.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1-2, this winter bulky concrete temperature regulating device includes heat transfer steel pipe 1, water pump 2 and retaining container 3, and heat transfer steel pipe 1 is fixed on the adapted concrete reinforcing bar with the iron wire ligature, the inlet tube 4 of water pump 2 communicates with each other with 3 bottoms of retaining container, and 3 tops of retaining container are equipped with filler pipe 5, are equipped with filler valve 6, its characterized in that on filler pipe 5: the water heater is also provided with a steam boiler (not shown in the figure) and a linkage reversing valve, a valve 8 is arranged on a steam generating pipe 7 of the steam boiler and is communicated into the water storage container 3, a branch pipe 9 is also arranged on the steam generating pipe 7, the branch pipe 9 is provided with a branch valve 10 and is connected on a heating pipe 12 which can be held by hand through a hose 11, the heat exchange steel pipe 1 is folded into a bidirectional accompanying pipe, the bidirectional accompanying pipe is folded and reciprocated on a matched concrete steel bar to lead out a first connector A and a second connector B, a water outlet pipe 13 of the water pump 2 is provided with a main circulating water valve 14, a water outlet pipe between the main circulating water valve 14 and the water pump 2 is also provided with a branch pipe 15, the branch pipe 15 is provided with a water valve 16 for stirring and is connected with a hose 11, the linkage reversing valve comprises a first valve 17, a second valve 18, a third valve 19 and a fourth valve 20, the four valves are ball valves or plug valves, valve cores of the four valves are respectively provided with valve handles 21, the outer ends of all the valve handles 21 are hinged on a linkage rod 22, the first valve 17 and the third valve 19 are synchronously switched (namely simultaneously opened or closed), the second valve 18 and the fourth valve 20 are synchronously switched, the switching states of the first valve 17 and the second valve 18 are opposite, and two ends of the first valve 17 are respectively communicated with the first interface A and the water storage container 3; two ends of the second valve 18 are respectively communicated with the first interface A and the circulating water main valve 14; the second interface B and the main circulating water valve 14 are respectively communicated with the two ends of the third valve 19, the second interface B and the water storage container 3 are respectively communicated with the two ends of the fourth valve 20, and a thermometer 23 and a glass window 24 (or a liquid level meter) with scale marks are arranged on the water storage container 3.
The middle section of the linkage rod 22 is an optical axis, a linear bearing 25 is sleeved on the optical axis, a screw 26 is fixedly connected to the linear bearing 25, the axis of the screw 26 is perpendicular to (but not intersected with) the axis of the linear bearing 25, a screw rod 27 is arranged on the screw 26, one end of the screw rod 27 is fixed to an output shaft of a servo motor 28, the other end of the screw rod 27 is fixed through a bearing, when the screw 26 is at a stroke end point and a stroke starting point on the screw rod 27, the first valve 17 is in an opening and closing state respectively, the servo motor 28 is provided with a clock control circuit (not shown in the figure), the clock control circuit starts the servo motor at a preset time interval t to drive the screw 26, the linear bearing 25 connected with the screw and the linkage rod 22 to move once between the stroke end point and the stroke starting point so as to drive the linkage reversing valve to reverse once, wherein the preset time t is not less than 0.5 hour and not more than 2 hours.
The bidirectional accompanying pipe is folded and reciprocated on the matched concrete reinforcing steel bars to form a plurality of parallel straight pipe sections 101, and the parallel straight pipe sections 101 are used as hollow main reinforcing bars and a plurality of solid main reinforcing bars 29 vertical to the hollow main reinforcing bars to jointly form the main reinforcing bars of the matched concrete reinforcing steel bars.
The temperature control device for the mass concrete in winter also comprises a digital display instrument (not shown in the figure) and a plurality of groups of temperature sensors (not shown in the figure), wherein each group of temperature sensors is electrically connected with the digital display instrument, each group of temperature sensors comprises three 53 omega copper thermocouples for measuring temperature, and iron wires are bound at the upper part, the middle part and the lower part of a corresponding temperature measuring area matched with concrete steel bars respectively, and the figure is omitted.
Utilize the utility model discloses carry out bulky concrete placement method winter, including following step:
(1) preparation: arranging the matched concrete reinforcing bars, the water pump 2, the water storage container 3 and the matched concrete template (not shown in the figure) of the winter mass concrete temperature control device at corresponding positions of a construction site;
(2) slurry preparation: enough water is injected into a water storage container 3, a valve 8 of a steam generating pipe 7 of the water storage container is opened, steam is introduced into the water in the water storage container 3, the water in the water storage container 3 is heated by the steam prepared by a steam boiler, when the water temperature of the water storage container 3 reaches 75 ℃, a circulating water main valve 14 is opened, heat is supplied to a heat exchange steel pipe 1, after the liquid level in the water storage container 3 is stabilized, concrete mortar is prepared by mixing and stirring according to the proportion shown in the following table, when stirring, materials except cement are added into a concrete mixer (not shown in the figure), a water valve 16 for stirring is opened at the same time or later, a corresponding amount of water is added into the concrete mixer through a hose 11, the mixture is uniformly stirred, finally, a corresponding amount of cement is added and stirred into the concrete mortar, a branch valve 10 is opened, a heating pipe 12 is held by hand, the steam is introduced into the concrete mortar for heating and heat preservation, so that the mold-entering temperature of the concrete is not lower than 5 ℃ and not higher than 10 ℃,
(3) pouring: the concrete pouring adopts a horizontal layering and layer-by-layer top-reaching mode for continuous pouring construction, the construction takes the long direction as the pouring direction and the short direction as the pouring surface, a method of layering pouring, layering vibration and pushing type continuous pouring is adopted, the layering thickness is controlled to be 300-500 mm, the combination of upper concrete and lower concrete among pouring belts is ensured when each layer of concrete is poured, an inclined plane formed by natural flowing of the concrete is utilized, the concrete is gradually poured in sequence, the top is reached once, the stop time of the upper concrete pouring and the lower concrete pouring is not more than the initial setting time of the concrete, the concrete amount poured in each layer is not large, the heat dissipation of the concrete is fast, the restraint between layers is not large, the generation of temperature cracks is favorably prevented, in the construction process, a concrete pump is considered to ensure balanced distribution, one layer of concrete is poured before the initial setting, the vibration process of the concrete between layers is adopted, the time is controlled to be 2-3 hours after the pouring, the concrete is inserted into the lower layer at a position of 5-15 cm during the vibration, the compactness is ensured, the first temperature monitoring is carried out from the beginning, the first temperature monitoring is carried out when the concrete is carried out, the temperature measuring stage is carried out every 3 hours, and the temperature measuring stage is carried out every time.
(4) Heat preservation and maintenance: when cooling measures are taken for the interior of concrete, maintenance and heat preservation measures of 'one cloth and one plastic' are also taken for the exposed surface of the concrete, namely, before the large-volume concrete is poured for initial setting, the operation of spraying a maintenance liquid is preferably carried out immediately, then a plastic film is adopted for covering, the outer side of the plastic film is covered by a cotton felt, the covering thickness is obtained by calculating delta =0.5h lambda (Tb-Tq) Kb/(lambda 0 (Tmax-Tb)), the bottom plate of the template is covered by 3 layers of cotton felt to ensure that the covering thickness is not less than 40mm, the side surfaces of the shear wall and the column steel bar inserting position are maintained by the cotton felt and are bound and fixed by iron wires, the top surfaces of the upturned sections of the peripheral outer walls are covered by 2 layers of cotton felt in a filling manner, backfilling is carried out in time after backfilling conditions are met, earthing and heat preservation are carried out to ensure that the concrete is slowly cooled and dried, the temperature difference between the interior and the exterior of the large-volume concrete is reduced, and the shrinkage cracks are prevented from occurring on the surface,
(5) drying and sealing the heat exchange steel pipe: after the maintenance, with the disconnection of 1 first interface A of heat transfer steel pipe and second interface B, blow off 1 inside water of heat transfer steel pipe with hot-blast to weather, then first interface A and second interface B seal with plug or welded mode, prevent the inside corrosion of 1 of heat transfer steel pipe, can.
Claims (4)
1. The utility model provides a big volume concrete temperature regulating device in winter, includes heat transfer steel pipe, water pump and retaining container, the iron wire ligature is fixed on the adapted concrete reinforcing bar for the heat transfer steel pipe, the inlet tube and the retaining container bottom of water pump communicate with each other, and the retaining container top is equipped with the filler pipe, is equipped with water valve, its characterized in that on the filler pipe: the water storage device is characterized by also comprising a steam boiler and a linkage reversing valve, wherein a valve is arranged on a steam generating pipe of the steam boiler and is communicated into the water storage container, a branch pipe is also arranged on the steam generating pipe, the branch pipe is provided with a branch valve and is connected to a handheld heating pipe through a hose, the heat exchange steel pipe is folded into a bidirectional accompanying pipe, the bidirectional accompanying pipe is folded and reciprocated on a matched concrete steel bar and then leads out a first connector and a second connector, a water outlet pipe of the water pump is provided with a circulating water main valve, a water outlet pipe between the circulating water main valve and the water pump is also provided with a branch pipe, a stirring water valve is arranged on the branch pipe and is connected with the hose, the linkage reversing valve comprises a first valve, a second valve, a third valve and a fourth valve, the fourth valve is a ball valve or a plug valve, valve cores of the fourth valve are respectively provided with valve handles, the outer ends of all the valve handles are hinged to a linkage rod, the first valve and the third valve are synchronously switched, the second valve and the fourth valve are synchronously switched on, the first valve and the second valve are switched on the opposite in states, and two ends of the first connector and the water storage container are respectively switched on; two ends of the second valve are respectively communicated with the first interface and the circulating water main valve; the second interface and the main circulating water valve are respectively communicated with the two ends of the third valve, the second interface and the water storage container are respectively communicated with the two ends of the fourth valve, and a thermometer and a glass window with scale marks or a liquid level meter are arranged on the water storage container.
2. A winter bulky concrete temperature regulating device according to claim 1, characterized in that: the middle section of the linkage rod is an optical axis, a linear bearing is sleeved on the optical axis, a screw nut is fixedly connected onto the linear bearing, the axis of the screw nut is perpendicular to the axis of the linear bearing but not intersected with the axis of the linear bearing, a screw rod is arranged on the screw nut, one end of the screw rod is fixed onto an output shaft of a servo motor, the other end of the screw rod is fixed through the bearing, when the screw nut is located at the stroke end point and the stroke starting point of the screw rod, the first valve is respectively in an opening state and a closing state, the servo motor is provided with a clock control circuit, the clock control circuit starts the servo motor at preset time intervals t, the screw nut, the linear bearing connected with the screw nut and the linkage rod are driven to move once between the stroke end point and the stroke starting point so as to drive the linkage reversing valve to reverse once, and the preset time t is less than or equal to 0.5 hours and less than or equal to 2 hours.
3. A winter bulky concrete temperature control device according to claim 1 or 2, characterized in that: the bidirectional accompanying pipe is folded and reciprocated on the matched concrete reinforcing steel bars to form a plurality of parallel straight pipe sections, and the parallel straight pipe sections are used as hollow main reinforcing bars and a plurality of solid main reinforcing bars perpendicular to the hollow main reinforcing bars to jointly form the main reinforcing bars of the matched concrete reinforcing steel bars.
4. A winter bulky concrete temperature regulating device according to claim 3, characterized in that: the temperature measuring device also comprises a digital display instrument and a plurality of groups of temperature sensors, wherein each group of temperature sensors is electrically connected with the digital display instrument, each group of temperature sensors comprises three 53 omega copper thermocouples for measuring temperature, and iron wires are bound at the upper part, the middle part and the lower part of the matched concrete steel bars of a corresponding temperature measuring area respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221453642.3U CN217680675U (en) | 2022-06-09 | 2022-06-09 | Temperature control device for mass concrete in winter |
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| CN202221453642.3U CN217680675U (en) | 2022-06-09 | 2022-06-09 | Temperature control device for mass concrete in winter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819113A (en) * | 2022-12-01 | 2023-03-21 | 西安铁一院工程试验检测有限公司 | Temperature-control crack-prevention temperature-control curing device and method for mass concrete |
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2022
- 2022-06-09 CN CN202221453642.3U patent/CN217680675U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819113A (en) * | 2022-12-01 | 2023-03-21 | 西安铁一院工程试验检测有限公司 | Temperature-control crack-prevention temperature-control curing device and method for mass concrete |
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