CN213260125U - Prestressed concrete sleeper dual-mode steam curing device - Google Patents
Prestressed concrete sleeper dual-mode steam curing device Download PDFInfo
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- CN213260125U CN213260125U CN202021267309.4U CN202021267309U CN213260125U CN 213260125 U CN213260125 U CN 213260125U CN 202021267309 U CN202021267309 U CN 202021267309U CN 213260125 U CN213260125 U CN 213260125U
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Abstract
The utility model discloses a prestressed concrete sleeper dual-mode steam curing device, belonging to the field of concrete sleeper production; the steam supply device comprises a boiler steam source and an electric steam source, wherein the two steam sources share a steam supply pipeline, the boiler steam source is used in low-temperature months, the heat supply capacity is strong, and the steam maintenance and temperature rise requirements under the low-temperature condition in winter can be met; the electric steam source is used in high-temperature months, so that the energy conservation in production is realized, and the production cost is reduced; in addition, a curing pool applying the dual-mode steam curing device is further provided, steam can be heated according to standard specifications, and the heating speed is high; in addition, still be equipped with automatic drainage device, can discharge the ponding of maintenance pit bottom automatically.
Description
Technical Field
The utility model relates to a concrete sleeper production field, in particular to prestressed concrete sleeper bimodulus steam curing means.
Background
Concrete ties are concrete products used as railroad ties. The concrete sleeper product is made up by using cement, sand, stone, water and additive according to a certain proportion, mixing them into a mixture, injecting the mixture into a combined model in which the steel wire or steel bar and sleeper fittings are mounted, adopting vibration forming or loading vibration forming, steam curing, loosening steel wire or steel bar and cutting sleeper end portion, etc..
The steam curing of the concrete sleeper is divided into four stages of static stop, temperature rise, constant temperature and temperature reduction, and the steam curing has the following standards:
1. the temperature of the concrete entering the mold is 5-30 ℃, the temperature of the steel mold when the concrete enters the mold is 5-35 ℃, and the difference between the temperature of the concrete and the temperature of the template is not more than 15 ℃;
2. after the sleeper is formed, the sleeper is statically kept in a maintenance pool for not less than 4 hours, so that steam maintenance can be carried out, the temperature rising speed of concrete is not more than 15 ℃/h in the steam maintenance process, the temperature reduction speed of the concrete is not more than 15 ℃/h during temperature reduction, and the temperature difference between the surface of the sleeper and the external environment is not more than 15 ℃ after the steam maintenance is finished;
3. the steam constant-temperature curing time is determined according to the steam curing strength of the sleeper (generally 10 hours), when the concrete strength is not lower than 45MPa and the concrete elastic modulus is more than 3.35 x 104Releasing prestress under MPa, demoulding the sleeper, maintaining the sleeper in a wet state for more than 3 days after demoulding, taking heat preservation measures when the environmental temperature is lower than 5 ℃, and maintaining the sleeper without sprinkling water when the lowest environmental temperature is lower than 0 ℃.
The concrete sleeper is provided with a special steam curing pool for steam curing, a coal-fired steam boiler is adopted to generate steam at present, the concrete sleeper is cured by utilizing hot steam, and the steam curing heat-preservation and moisture-preservation effects are good; the originally arranged steam curing pool of our factory comprises 8 curing pits with the length of 15 meters, the width of 2.6 meters and the depth of 6 meters, and 2 boilers with the weight of 10 tons are adopted to provide steam; as the lowest temperature in the factory in winter in the Baotou area of inner Mongolia is 20-30 ℃, the arrangement mainly considers meeting the temperature rise requirement in winter; in actual production, the temperature is 20-30 ℃ above zero in summer and autumn, too high temperature is not required to be provided by a boiler, and the original boiler providing steam wastes energy resources and is high in cost; the existing electric steam generator can meet the steam curing requirement in summer and autumn under the conditions of less energy consumption and lower cost (compared with the condition of the same boiler), but the heat supply capacity of the electric steam generator cannot meet the requirement of temperature rise in winter; therefore, the company improves and designs a prestressed concrete sleeper dual-mode steam curing device according to seasonal changes.
Disclosure of Invention
The utility model aims to provide a prestressed concrete sleeper bimodulus steam curing means, this bimodulus steam curing means's characteristics are, including boiler steam source and electric steam source, two steam sources share the steam supply pipeline, use the boiler steam source in low temperature month (generally 11 months to the 4 months of the second year), and the heating capacity is strong, can satisfy steam curing intensification requirement under the winter low temperature condition; the electric steam source is used in high-temperature months (generally 5 months to 10 months), so that the energy conservation in production is realized, and the production cost is reduced.
The utility model adopts the technical scheme as follows: a prestressed concrete sleeper dual-mode steam curing device comprises a boiler room and a curing pool, wherein a boiler is arranged in the boiler room, the curing pool is close to the boiler room, and the curing pool is composed of a plurality of curing pits; the boiler is conveyed to the branch cylinder through a steam pipeline, the branch cylinder distributes steam generated during the operation of the boiler to each branch pipeline, and each branch pipeline extends into each maintenance pit and provides the steam for each maintenance pit; the device is characterized in that a three-way pipe is used in front of the steam-dividing cylinder, the steam outlet end of the three-way pipe is connected with the steam inlet end of the steam-dividing cylinder, the other two of the three-way pipe are steam inlet ends, one of the three-way pipe is connected with a boiler through a pipeline, and the other one of the three-way pipe is connected with an electric steam generator through a pipeline; the steam delivery pipeline of the electric steam generator is provided with a first valve, and the steam delivery pipeline of the boiler is provided with a second valve.
Further, the first valve and the second valve are arranged near the three-way pipe.
Further, the electric steam generator is arranged outside the boiler room.
The utility model provides an use above-mentioned bimodulus steam curing means's maintenance pond, every maintenance hole is 15 meters long, wide 2.6 meters, dark 6 meters, and every maintenance hole left and right sides top-down interval 120cm sets up 4 rows of steam pipe slots, and the steam pipe crouches in the pipe slot, can not protrusion in maintenance hole side, and the steam pipe hides in the pipe slot promptly, and steam pipe one side sets up the steam vent towards in the maintenance hole.
Furthermore, one side of the pipe groove facing the inside of the maintenance pit is in a bell mouth shape, and the steam release holes are radially arranged, namely, the annular surface of one side of the steam pipe facing the inside of the maintenance pit is provided with holes in multiple radial directions.
Furthermore, three temperature detection points are arranged on the curing pit near the bottom, the middle and the top.
Furthermore, a steam pipe which is positioned outside the curing pit and exposed in the environment adopts a heat preservation pipe or is subjected to heat preservation treatment.
Further, maintenance hole bottom is seted up drainage channel, and drainage channel includes vertical drainage chamber and horizontal drainage chamber, and all vertical drainage chamber bottom intercommunications horizontal drainage chamber, and horizontal drainage chamber outwards walks lowly gradually, and its delivery port connecting drain pipe leads to in the waste water pond, the last installation valve three of drain pipe.
Furthermore, a detection device for detecting the water level is installed on the side wall of the bottom edge of the maintenance pit, a third valve adopts an electromagnetic valve, and the third valve is controlled to be opened and closed through a controller.
The beneficial effects of the utility model reside in that: the utility model provides a bimodulus steam curing means, including boiler steam source and electric steam source, two steam sources share the steam supply pipeline, use the boiler steam source in low temperature month (generally 11 months to 4 months of the second year), and the heating capacity is strong, can satisfy steam curing intensification requirement under the winter low temperature condition; the electric steam source is used in high-temperature months (generally 5 months to 10 months), so that the energy conservation in production is realized, and the production cost is reduced.
In addition, the curing pool applying the dual-mode steam curing device is further provided, the curing pit can be quickly filled with steam, and the heating speed is high; in addition, still be equipped with automatic drainage device, can discharge the ponding of maintenance pit bottom automatically.
Drawings
FIG. 1 is a schematic plan view of a steam curing site and equipment in an embodiment.
FIG. 2 is a schematic diagram of a dual-mode steam-curing apparatus.
FIG. 3 is a cross-sectional view of a curing pit having a width of 260cm and a depth of 600 cm.
FIG. 4 is a side sectional view of a steam tube slot.
FIG. 5 is a schematic view of the covered area of the curing pit after steam is sprayed out in the example.
FIG. 6 is a schematic view showing a bottom drainage structure of the maintenance pot.
In the figure: the system comprises a steam curing pool 1, a curing pit 2, a boiler 3, a boiler room 4, a steam distributing cylinder 5, a three-way pipe 6, an electric steam generator 7, a first valve 8, a second valve 9, a steam pipe groove 10, a steam pipe 11, a vertical water drainage cavity 12, a transverse water drainage cavity 13, a third valve 14 and a detection device 15.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
A dual-mode steam curing device for prestressed concrete sleepers is characterized by comprising a boiler steam source and an electric steam source, wherein the two steam sources share a steam supply pipeline, the boiler steam source is used in low-temperature months (generally, 11 months to 4 months in the second year), the heat supply capacity is high, and the steam curing and temperature rising requirements under the low-temperature condition in winter can be met; the electric steam source is used in high-temperature months (generally 5 months to 10 months), so that the energy conservation in production is realized, and the production cost is reduced.
The following description of the practical modification of my plant is given:
the originally arranged steam curing pool 1 of our factory comprises 8 curing pits 2 with the length of 15 meters, the width of 2.6 meters and the depth of 6 meters, and 2 boilers 3 with the weight of 10 tons are originally adopted to provide steam; the specific site and equipment are arranged as follows, as shown in fig. 1, a maintenance pool is close to a boiler room 4, 2 rows of 10 tons of boilers 3 are arranged in the boiler room 4, the boilers 3 are conveyed to a steam distribution cylinder 5 through steam pipelines, the steam distribution cylinder is a main matched device of the boiler and is used for distributing steam generated when the boilers 3 operate to each branch pipeline, and each branch pipeline corresponds to a maintenance pit 2 and provides steam for each branch pipeline;
the technical improvement scheme of the plant is that as shown in figure 2, a three-way pipe 6 is used in front of a steam-dividing cylinder 5, the steam outlet end of the three-way pipe 6 is connected with the steam inlet end of the steam-dividing cylinder 5, the other two three-way pipes 6 are steam inlet ends, one of the three-way pipes is connected with a boiler 3 through a pipeline, and the other one of the three-way pipes is connected with an electric steam generator 7 through a pipeline (the Hubei Bestedt steam generator adopted by the plant is an existing product and is not described in detail); the steam delivery pipeline of the electric steam generator 7 is provided with a first valve 8, the steam delivery pipeline of the boiler 3 is provided with a second valve 9, and the first valve 8 and the second valve 9 are preferably arranged near the three-way pipe 6; the two steam sources are generally used independently, one steam source is used, and the other steam source is used for closing the pipeline, so that the steam flow into the unused pipeline is reduced, and the heat waste is caused;
in addition, the electric steam generator 7 is an electric device, and is preferably arranged outside the boiler room 4, and the environment that the humidity in the boiler room 4 is large and the temperature is high is not favorable for the long-term use of the electric steam generator 7.
Further, the maintenance pool applying the dual-mode steam maintenance device comprises 8 maintenance pits which are arranged in parallel and are 15 meters long, 2.6 meters wide and 6 meters deep, and is characterized in that the maintenance pits are arranged in a mode that the maintenance pits are 260cm wide and 600cm deep as shown in figure 3, 4 rows of steam pipe grooves 10 are formed in the left side surface and the right side surface of each maintenance pit 2 at intervals of 120cm from top to bottom, the steam pipes 11 are laid in the pipe grooves and cannot protrude out of the side surfaces of the maintenance pits 2, namely the steam pipes 11 are hidden in the pipe grooves (the steam pipes 11 are prevented from being in contact with, colliding and damaged) and steam discharge holes (not shown) are formed in one side, facing the maintenance pits 2, of each steam pipe 11; as shown in fig. 4, one side of the pipe groove facing the inside of the maintenance pit 2 is in a bell mouth shape, and the steam release holes are arranged in a radial shape, that is, the steam pipe 11 is provided with holes along multiple radial directions in an annular surface facing one side of the inside of the maintenance pit 2; as shown in fig. 5, which is a schematic view of the covered area after steam is injected, the steam can quickly fill the curing pit 2 after being injected from the steam pipe 11.
Further, three temperature detection points (not shown) are arranged near the bottom, the middle and the top of the maintenance pit 2, and the temperature value of the maintenance pit 2 is measured according to the average value of the three temperature detection points.
Further, in order to reduce heat loss in the conveying process of the steam pipe 11, the steam pipe 11 which is positioned outside the curing pit 2 and exposed in the environment is a heat-insulating pipe or subjected to heat-insulating treatment.
In addition, the water after the steam curing condensation in maintenance hole 2 needs in time to be discharged, otherwise can form ponding and soak the sleeper, as shown in fig. 6, maintenance hole 2 bottoms are seted up drainage channel, drainage channel includes vertical drainage chamber 12 and horizontal drainage chamber 13, the horizontal drainage chamber 13 of 12 bottom intercommunications in all vertical drainage chambers, horizontal drainage chamber 13 outwards descends gradually, its delivery port is connected the drain pipe and is led to in the waste water pond, will install valve three 14 on the drain pipe, the maintenance stage is regularly drained water, can not open always, prevent that steam from scattering and disappearing. A water level detection device 15 is preferably arranged on the side wall of the bottom edge of the maintenance pit 2, a third valve 14 adopts an electromagnetic valve, and the opening and closing of the third valve 14 are controlled by a controller; and intelligent production is realized.
Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that modifications may be made to the above-described embodiments, or equivalent changes and modifications may be made to some of the technical features of the embodiments.
Claims (9)
1. A prestressed concrete sleeper dual-mode steam curing device comprises a boiler room and a curing pool, wherein a boiler is arranged in the boiler room, the curing pool is close to the boiler room, and the curing pool is composed of a plurality of curing pits; the boiler is conveyed to the branch cylinder through a steam pipeline, the branch cylinder distributes steam generated during the operation of the boiler to each branch pipeline, and each branch pipeline extends into each maintenance pit and provides the steam for each maintenance pit; the steam boiler is characterized in that a three-way pipe is used in front of the steam-dividing cylinder, the steam outlet end of the three-way pipe is connected with the steam inlet end of the steam-dividing cylinder, the other two three-way pipes are steam inlet ends, one of the three-way pipes is connected with the boiler through a pipeline, and the other three-way pipe is connected with an electric steam generator through a pipeline; the steam delivery pipeline of the electric steam generator is provided with a first valve, and the steam delivery pipeline of the boiler is provided with a second valve.
2. The dual-mode steam curing device for the prestressed concrete sleeper as claimed in claim 1, wherein:
the first valve and the second valve are arranged near the three-way pipe.
3. The dual-mode steam curing device for the prestressed concrete sleeper as claimed in claim 1, wherein: the electric steam generator is arranged outside the boiler room.
4. The dual-mode steam curing device for prestressed concrete sleepers according to any one of claims 1 to 3, characterized in that: each maintenance pit is 15 meters long, 2.6 meters wide and 6 meters deep, 4 rows of steam pipe grooves are formed in the left side surface and the right side surface of each maintenance pit at intervals of 120cm from top to bottom, a steam pipe is horizontally arranged in each pipe groove and cannot protrude out of the side surface of each maintenance pit, namely the steam pipe is hidden in each pipe groove, and a steam release hole is formed in one side of the steam pipe facing the inside of each maintenance pit.
5. The dual-mode steam curing device for prestressed concrete sleepers as claimed in claim 4, wherein: one side of the pipe groove facing the inside of the maintenance pit is in a horn mouth shape, and the steam release holes are radially arranged, namely, the steam pipe is provided with holes extending in multiple radial directions towards the annular surface of one side of the maintenance pit.
6. The dual-mode steam curing device for prestressed concrete sleepers as claimed in claim 4, wherein: three temperature detection points are arranged at the position, close to the bottom, the middle and the top, of the maintenance pit.
7. The dual-mode steam curing device for prestressed concrete sleepers as claimed in claim 6, wherein: the steam pipe which is positioned outside the curing pit and exposed in the environment adopts a heat preservation pipe or is subjected to heat preservation treatment.
8. The dual-mode steam curing device for prestressed concrete sleepers as claimed in claim 7, wherein: maintenance hole bottom is seted up drainage channel, and drainage channel includes vertical drainage chamber and horizontal drainage chamber, and all vertical drainage chamber bottoms intercommunication horizontal drainage chambers, horizontal drainage chamber outwards walk low gradually, and its delivery port connecting drain pipe leads to in the waste water pond, installs valve three on the drain pipe.
9. The dual-mode steam curing device for prestressed concrete sleepers as recited in claim 8, wherein: and a detection device for detecting the water level is arranged on the side wall of the edge of the bottom of the maintenance pit, a third valve adopts an electromagnetic valve, and the third valve is controlled to be opened and closed by a controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021267309.4U CN213260125U (en) | 2020-07-02 | 2020-07-02 | Prestressed concrete sleeper dual-mode steam curing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021267309.4U CN213260125U (en) | 2020-07-02 | 2020-07-02 | Prestressed concrete sleeper dual-mode steam curing device |
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| CN213260125U true CN213260125U (en) | 2021-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536530A (en) * | 2022-03-24 | 2022-05-27 | 广东电网有限责任公司 | Device and method for curing geopolymer by steam and application thereof |
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- 2020-07-02 CN CN202021267309.4U patent/CN213260125U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536530A (en) * | 2022-03-24 | 2022-05-27 | 广东电网有限责任公司 | Device and method for curing geopolymer by steam and application thereof |
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