Steam curing device for UHPC (Ultra High Performance Concrete) beam plate
The design of a split sealed heat insulation cover solves the problem of the folding telescopic frame being easily corroded in the UHPC beam and slab steam curing chamber, achieves effective protection and heat retention for the folding telescopic frame, reduces energy consumption, and improves the curing effect of the UHPC beam.
Patent Information
- Application Number
- CN202422399176.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Folding telescopic frames are susceptible to corrosion in the steam curing chamber of UHPC beams and slabs, resulting in increased costs.
The sealed heat-insulating cover adopts a split design, including side sealed covers and top sealed covers. The joints are sealed by gas filling. The top sealed cover and the side sealed covers form a closed maintenance chamber to prevent the folding telescopic frame from being directly exposed to high temperature environment, and use the sealing performance of water and gas to improve the overall sealing.
Effectively prevent corrosion of the folding telescopic frame, reduce heat loss, reduce energy waste, and improve the maintenance effect and quality of UHPC beams.
Smart Images
Figure CN223301912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ultra-high performance concrete steam curing, in particular to a steam curing device for UHPC beams and slabs. Background Art
[0002] UHPC is primarily composed of cement, silica fume, fly ash, water-reducing agent, quartz sand, and steel fiber. Constructed according to the principle of maximum density, the pores between the material particles are filled with smaller-sized materials, minimizing internal pores and microcracks. Its high density provides ultra-high strength and excellent durability. The steel fibers dispersed within UHPC significantly slow the expansion of microcracks within the material, giving it exceptional toughness. UHPC does not contain coarse aggregate, and the cement used is of a high strength grade and in large quantities, resulting in significant shrinkage. To improve the strength and density of UHPC and mitigate the adverse effects of later hydration (such as shrinkage, cracking, and creep), UHPC should be fully steam-cured at high temperatures to ensure that the room-temperature hydratable cementitious materials complete hydration as quickly as possible, minimizing later changes over time.
[0003] The applicant has developed a steam curing system for UHPC segmental beams, comprising a folding telescopic frame and a sealed heat shield. When extended, the folding telescopic frame forms a curing chamber for the UHPC segmental beams. The sealed heat shield is located outside the folding telescopic frame. Due to the high temperature and high water content in the curing chamber during steam curing, the folding telescopic frame is susceptible to corrosion, increasing curing costs. Utility Model Content
[0004] The utility model aims to provide a steam curing device for UHPC beams and slabs, so as to solve the problem that the folding telescopic frame is easily corroded in the curing cavity, resulting in increased costs.
[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a steam curing device for UHPC beams and slabs, comprising a folding telescopic frame and a sealed heat-insulating cover, wherein the sealed heat-insulating cover comprises a side sealed cover and a top sealed cover, wherein an air cavity for inflation is formed inside the side sealed cover and the top sealed cover, wherein the folding telescopic frame is used to support and fix the side sealed cover, wherein the folding telescopic frame is symmetrically arranged on the outside of the side sealed cover, wherein the top sealed cover covers the side sealed cover, and wherein the bottom of the top sealed cover is fixed on the folding telescopic frame.
[0006] The principle and advantages of this solution are as follows: A folding telescopic frame is stretched and placed on the curing ground. Side hoods are then secured to the inside of the folding telescopic frame. A top hood is placed on top of the side hoods, covering and sealing the tops of the side hoods. The bottom of the top hood is secured to the folding telescopic frame. The top and side hoods are then filled with gas, and the connection between the top and side hoods is sealed through gas filling, forming a closed curing chamber. During UHPC beam curing, UHPC beams can be placed and removed by opening either the side or top hood.
[0007] This solution adopts a split design of the sealed heat insulation cover, which makes it easy to open the top sealed cover and facilitate the lifting of the UHPC beam; by setting the folding telescopic frame on the outside of the side sealed cover, the folding telescopic frame is effectively protected to prevent corrosion of the folding telescopic frame; the side sealed cover and the top sealed cover are used to reduce heat loss and energy waste, while preventing the telescopic folding frame from being easily damaged in a high temperature environment; the top sealed cover and the side sealed cover are convenient for transportation and installation; the gas expansion is used to improve the sealing performance of the connection between the top sealed cover and the side sealed cover.
[0008] Preferably, as an improvement, a groove is provided at the connection between the side sealing cover and the top sealing cover, and the groove is used to accommodate the expanded top sealing cover. By providing the groove, the sealing performance of the connection between the side sealing cover and the top sealing cover is improved.
[0009] Preferably, as an improvement, the top inner side of the side sealing cover is provided with an inwardly facing protrusion, and the protrusion forms a groove with the top of the side sealing cover.
[0010] Preferably, as an improvement, the device further comprises a sealed water shield, which is located at the bottom of the side sealing shield and is tightly connected to the side sealing shield. The sealed water shield defines a liquid chamber for filling with liquid, and the sealed water shield is located inside the foldable and telescopic frame. The sealed water shield is filled with water, and the water exerts a downward force on the bottom of the side sealing shield, thereby ensuring the sealing of the bottom of the side sealing shield.
[0011] Preferably, as an improvement, a fixed absorbent is further included. The fixed absorbent is located inside the side enclosure, one end of the fixed absorbent is fixedly connected to the inner side of the side enclosure, and the other end of the fixed absorbent is located in the edge water groove of the maintenance floor. After the fixed absorbent absorbs water, the gravity increases, increasing the downward force on the side enclosure, thereby ensuring the sealing of the side enclosure. At the same time, the fixed absorbent can also seal the inner side of the side enclosure, ensuring the sealing of the side enclosure.
[0012] Preferably, as an improvement, a connecting net is further included, the connecting net being located outside the top enclosed cover, with both sides of the connecting net being fixed to the folding and telescopic frames. The connecting net facilitates fixing the top enclosed cover to the folding and telescopic frames, and the connection method of the connecting net makes the force on the top enclosed cover more uniform.
[0013] Preferably, as an improvement, an inflation tube is connected to the outside of the side sealing cover, and the inflation tube is connected to an inflation cylinder, and the inflation cylinder is fixed to the folding and telescopic frame. The number of the inflation tubes is multiple. The connection between the inflation tube and the inflation cylinder strengthens the connection between the side sealing cover and the folding and telescopic frame, making it easier to fix the side sealing cover to the folding and telescopic frame.
[0014] Preferably, as an improvement, the side closed cover of the unfolded surface of the folding telescopic frame is provided with a movable door.
[0015] Preferably, as an improvement, the top sealed cover includes a first top sealed cover and a second top sealed cover, the first top sealed cover and the second top sealed cover being hermetically connected, the second top sealed cover being located on the side of the first top sealed cover, and the bottom of the first top sealed cover being filled with water, the bottom of the first top sealed cover being located on top of the side sealed cover. The use of water improves the sealing performance between the top sealed cover and the side sealed cover, and at the same time, forms a water mist within the first top sealed cover, reducing the exposure of the top UHPC beam to the sun and improving the maintenance effect and quality of the UHPC beam.
[0016] Preferably, as an improvement, the side closed cover and the top closed cover are both provided with ventilation holes, which facilitate the exhaust of gas in the curing chamber formed by the side closed cover and the top closed cover, thereby preventing high-temperature steam from causing harm to workers after the curing is completed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.
[0018] Figure 2 This is a schematic structural diagram of the side sealing cover and the top sealing cover of an embodiment of the present utility model. DETAILED DESCRIPTION
[0019] The following is further described in detail through specific implementation methods:
[0020] The reference numerals in the drawings of the specification include: side sealed cover 1, movable door 11, protrusion 12, top sealed cover 2, first top sealed cover 21, second top sealed cover 22, folding telescopic frame 3, connecting net 4, inflation tube 5, inflation cylinder 6.
[0021] The embodiment is basically as shown in the attached Figure 1 and attached Figure 2 As shown:
[0022] A steam curing device for UHPC beams and slabs comprises a folding telescopic frame 3 and a sealed heat-insulating cover. The sealed heat-insulating cover comprises a side sealed cover 1 and a top sealed cover 2. Air cavities for inflation are formed inside the side sealed cover 1 and the top sealed cover 2.
[0023] The folding and telescopic frame 3 is used to support and fix the side sealed cover 1. The folding and telescopic frame 3 is symmetrically arranged on the outside of the side sealed cover 1. The folding and telescopic frame 3 is stretched and placed on the maintenance ground, and then the side sealed cover 1 is fixed to the inside of the folding and telescopic frame 3. By arranging the folding and telescopic frame 3 on the outside of the side sealed cover 1, the folding and telescopic frame 3 is effectively protected from corrosion. The side sealed cover 1 and the top sealed cover 2 reduce heat loss, preventing the folding and telescopic frame from being easily damaged in a high temperature environment.
[0024] The top sealed cover 2 covers the side sealed cover 1, and both sides of the top sealed cover 2 are fixed to the folding and telescopic frames 3 on the corresponding sides. The top sealed cover 2 covers and seals the top of the side sealed cover 1, and the bottom of the top sealed cover 2 is fixed to the folding and telescopic frames 3. The expansion of gas improves the sealing performance of the connection between the top sealed cover 2 and the side sealed cover 1; the side sealed cover 1 and the top sealed cover 2 are used to reduce heat loss and energy waste.
[0025] The top sealed cover 2 and the side sealed cover 1 are enclosed and connected in a sealed manner, and the sealed heat insulation cover is designed to be split, which makes it easy to open the top sealed cover 2 and to use the lifting equipment to lift the UHPC beam; the top sealed cover 2 and the side sealed cover 1 are convenient for transportation and installation; when maintaining the UHPC beam, the UHPC beam can be taken in and out by opening the side sealed cover 1 or the top sealed cover 2.
[0026] The side closed cover 1 of the unfolded surface of the folding telescopic frame 3 is provided with a movable door 11. The movable door 11 is installed on the side closed cover in the form of a closed zipper, which is convenient for opening control.
[0027] The top of the folding telescopic frame 3 is located above the top of the rear middle part of the side sealing cover 1 filled with gas.
[0028] In this embodiment, a universal wheel is provided at the bottom of the foldable telescopic frame 3 , and a latch for braking the universal wheel is provided on the universal wheel. The structure of the universal wheel is realized with reference to the prior art.
[0029] The top sealed cover 2 includes a first top sealed cover 21 and a second top sealed cover 22, which are tightly connected. The second top sealed cover 22 is located on the side of the first top sealed cover 21. The bottom of the first top sealed cover 21 is filled with water, and the bottom of the first top sealed cover 21 is located on the top of the side sealed cover 1. The use of water improves the sealing performance between the top sealed cover 2 and the side sealed cover 1. At the same time, water mist can be formed in the first top sealed cover 21, reducing the exposure of the top UHPC beam to the sun and improving the maintenance effect and quality of the UHPC beam.
[0030] A groove is provided at the junction between the side sealing cover 1 and the top sealing cover 2 to accommodate the expanded top sealing cover 2. This groove improves the sealing performance of the connection between the side sealing cover 1 and the top sealing cover 2. In this embodiment, the top of the side sealing cover 1 has an inwardly facing protrusion 12, which forms a groove with the top of the side sealing cover 1. In this embodiment, the protrusion 12 is filled with gas.
[0031] The side sealing cover 1 also includes a sealing water cover, which is located at the bottom of the side sealing cover 1 and is tightly connected to the side sealing cover 1. The sealing water cover has a liquid cavity formed therein for filling with liquid. The sealing water cover is located inside the folding and telescopic frame 3. When the sealing water cover is filled with water, the bottom of the side sealing cover 1 is subjected to a downward force by the action of the water, thereby ensuring the sealing of the bottom of the side sealing cover 1.
[0032] The device further includes a fixed absorbent material located within the side enclosure 1. One end of the fixed absorbent material is fixedly connected to the inner side of the side enclosure 1, and the other end of the fixed absorbent material is located in the edge trough of the maintenance floor. After the fixed absorbent material absorbs water, gravity increases, increasing the downward force on the side enclosure 1 and ensuring the sealing of the side enclosure 1. Simultaneously, the fixed absorbent material can seal the inner side of the side enclosure 1, ensuring the sealing of the side enclosure 1. The fixed absorbent material in this embodiment is cloth, which has a relatively strong water absorption capacity and a relatively good fixing effect after absorbing water.
[0033] It also includes a connecting net 4, which is located on the outside of the top closed cover 2, and both sides of the connecting net 4 are fixed to the folding and telescopic frame 3. At the same time, the connecting net 4 facilitates the fixing of the top closed cover 2 on the folding and telescopic frame 3, and the connection method of the connecting net 4 makes the top closed cover 2 more evenly stressed.
[0034] The outside of the side enclosure 1 is connected to an inflation tube 5, which is connected to an inflation cylinder 6. The inflation cylinder 6 is fixed to the foldable and telescopic frame 3. There are multiple inflation tubes 5. The connection between the inflation tube 5 and the inflation cylinder 6 strengthens the connection between the side enclosure 1 and the foldable and telescopic frame 3, facilitating the attachment of the side enclosure 1 to the foldable and telescopic frame 3. The inflation tube 5 in this embodiment is made of plastic. After inflation, the inflation tube 5 is partially retained on the foldable and telescopic frame 3, thus securing the side enclosure 1 to the foldable and telescopic frame 3.
[0035] Both the side closed cover 1 and the top closed cover 2 are provided with ventilation holes. The ventilation holes facilitate the discharge of the gas in the curing chamber formed by the side closed cover 1 and the top closed cover 2 to avoid the high temperature steam from causing harm to the workers after the curing is completed.
[0036] Specific implementation process: level the ground, sort out the location of the UHPC beam curing chamber, and dig edge water grooves at the edge of the curing chamber. Place the folding telescopic frame 3 symmetrically on both sides of the curing chamber, unfold the folding telescopic frame 3, place the side sealed cover 1 inside the folding telescopic frame 3, set the inflation cylinder 6 in the pores of the folding telescopic frame 3, use the inflation cylinder 6 to inflate the inflation tube 5, so that the side sealed cover 1 expands, and then build the top sealed cover 2 on top of the side sealed cover 1, inflate the top sealed cover 2, so that the top sealed cover 2 covers the sealed side sealed cover 1, and use the connecting net 4 The top sealed cover 2 is fixed on the folding telescopic frame 3, and a curing chamber is formed under the action of the side sealed cover 1 and the top sealed cover 2; some water is filled on the top of the first top sealed cover 21 to increase the sealing performance between the top sealed cover 2 and the side sealed cover 1, and the sealing performance between the side sealed cover 1 and the ground is improved under the action of the sealed water cover and the fixed water absorbent; steam is then passed into the curing chamber to cure the UHPC beam. After the curing is completed, the connecting net 4 is opened and the water in the first top sealed cover 21 is discharged, so that the top sealed cover 2 is opened, and the cured UHPC beam is hoisted from the top using hoisting equipment.
[0037] This solution effectively protects the folding and telescopic frame 3 by arranging it on the outside of the side sealed cover 1, thereby preventing the folding and telescopic frame 3 from being corroded; uses the side sealed cover 1 and the top sealed cover 2 to reduce heat loss and energy waste, while preventing the telescopic folding frame from being easily damaged in a high temperature environment; the sealed heat insulation cover is designed to be split, which makes it easy to open the top sealed cover 2 and to lift the UHPC beam; the top sealed cover 2 and the side sealed cover 1 are convenient for transportation and construction; gas expansion is used to make the sealing performance of the connection between the top sealed cover 2 and the side sealed cover 1 better; water is filled in the sealing cover, and the effect of water is used to make the bottom of the side sealed cover 1 subject to a downward force, thereby ensuring the sealing of the bottom of the side sealed cover 1; after the fixed absorbent absorbs water, the gravity increases, which increases the downward force on the side sealed cover 1, thereby ensuring the sealing of the side sealed cover 1, and at the same time, the fixed object can seal the inside of the side sealed cover 1 to ensure the sealing of the side sealed cover 1.
[0038] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, several variations and improvements can be made without departing from the technical solution of the present invention. In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The scope of protection claimed 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 device for UHPC beams and slabs, comprising a folding telescopic frame and a sealed heat-insulating cover, characterized in that: The sealed heat-insulating cover includes a side sealed cover and a top sealed cover, and an air cavity for inflation is formed inside the side sealed cover and the top sealed cover. The folding telescopic frame is used to support and fix the side sealed cover. The folding telescopic frame is symmetrically arranged on the outside of the side sealed cover. The top sealed cover covers the side sealed cover, and the bottom of the top sealed cover is fixed on the folding telescopic frame.
2. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: A groove is provided at the connection between the side sealing cover and the top sealing cover, and the groove is used to accommodate the expanded top sealing cover.
3. The steam curing device for UHPC beams and slabs according to claim 2, characterized in that: The top of the side sealing cover has an inwardly facing protrusion on the inner side, and the protrusion and the top of the side sealing cover form a groove.
4. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: It also includes a sealed water cover, which is located at the bottom of the side closed cover and is tightly connected to the side closed cover. A liquid cavity for filling liquid is formed inside the sealed water cover, and the sealed water cover is located inside the folding telescopic frame.
5. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: It also includes a fixed water absorbent, which is located inside the side closed cover. One end of the fixed water absorbent is fixedly connected to the inner side of the side closed cover, and the other side of the fixed water absorbent is located in the edge water tank of the maintenance floor.
6. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: It also includes a connecting net, which is located on the outside of the top closed cover, and both sides of the connecting net are respectively fixed on the folding and telescopic frame.
7. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: The outer side of the side closed cover is connected with an inflation pipe, and the inflation pipe is connected with an inflation cylinder, and the inflation cylinder is fixed on the folding and telescopic frame. There are multiple inflation pipes.
8. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: The side closed cover of the unfolded surface of the folding telescopic frame is provided with a movable door.
9. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: The top sealed cover includes a first top sealed cover and a second top sealed cover, the first top sealed cover and the second top sealed cover are tightly connected, the second top sealed cover is located on the side of the first top sealed cover, the bottom of the first top sealed cover is filled with water, and the bottom of the first top sealed cover is located on the top of the side sealed cover.
10. The steam curing device for UHPC beams and slabs according to claim 1, characterized in that: The side closed cover and the top closed cover are both provided with ventilation holes.