A curing device for small diameter shaft lining concrete

Abstract

The utility model discloses a kind of curing devices for small-diameter vertical shaft lining concrete, belong to concrete curing technical field.It includes curing layer being set on the inner wall of vertical shaft by several connecting pieces, curing layer includes non-woven fabric curing film layer, polyethylene film layer, rock wool layer and stainless steel layer in turn in the direction of far from the inner wall of vertical shaft, and flexible spray water pipe of S type is clamped in non-woven fabric curing film from top to bottom, and flexible spray water pipe surface is provided with several spray holes with 0.5-1mm aperture. Through the utility model, not only can effectively improve the installation efficiency of curing layer, without layer by layer laying, but also can set curing layer depth according to the depth of vertical shaft, so as to effectively cover the lower half of shaft wall, and the setting of S type flexible spray water pipe improves the curing concrete spray area of curing layer, improves the curing efficiency, and the equal-interval spray holes of every 100mm on flexible spray water pipe surface ensure the humidity uniformity of vertical shaft wall.

Description

Technical Field

[0001] This utility model relates to a curing device for the concrete lining of small-diameter vertical shafts, belonging to the field of concrete curing technology. Background Technology

[0002] Concrete curing of shafts refers to a series of measures taken during shaft construction to ensure that the concrete undergoes a full hydration reaction under suitable temperature and humidity conditions, so as to achieve the strength, durability and integrity required by the design.

[0003] Traditional methods of curing concrete shafts often result in incomplete coverage. When manually sprinkling water or covering with plastic film, the lower half of the shaft wall is difficult to cover effectively, leading to uneven humidity. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a curing device for the inner lining concrete of small-diameter vertical shafts. It solves the problem that the traditional vertical shaft concrete curing methods in the prior art do not provide complete curing coverage, and that the lower half of the shaft wall is difficult to cover effectively when manually sprinkling water or covering with plastic film, resulting in uneven humidity.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: a curing device for concrete lining of small-diameter vertical shafts, comprising a curing layer set on the inner wall of the vertical shaft by a number of connectors, wherein the curing layer comprises, in sequence, a non-woven fabric curing film layer, a polyethylene film layer, a rock wool layer and a stainless steel layer in the direction away from the inner wall of the vertical shaft, wherein a flexible spray water pipe in an S-shape is sandwiched in the non-woven fabric curing film from top to bottom, and the surface of the flexible spray water pipe is provided with a number of spray holes with a diameter of 0.5-1mm.

[0006] By adopting the above technical solutions, the installation efficiency of the curing layer can be effectively improved, eliminating the need for layer-by-layer laying. Furthermore, the depth of the curing layer can be set according to the depth of the shaft, thereby effectively covering the lower half of the shaft wall. The installation of S-shaped flexible spray pipes increases the spraying area of ​​the curing concrete and improves the curing efficiency. The spray holes on the surface of the flexible spray pipes, spaced at 100mm intervals, ensure uniform humidity of the shaft wall.

[0007] The present invention is further configured such that: the curing layer includes several curing units that are interconnected to form a ring-shaped closed structure; bolt holes are pre-embedded in the inner wall of the shaft; the connecting parts are several fixing bolts set on the curing units; the top and bottom of the curing units are provided with fixing steel rings that match the curvature of the curing units; and the non-woven curing film layer, polyethylene film layer, rock wool layer and stainless steel layer are anchored together by waterproof studs.

[0008] By adopting the above technical solutions, the installation of the curing layer becomes more convenient and the installation efficiency is improved.

[0009] The present invention is further configured such that: an observation port is provided on the inner wall of the curing unit, a color-changing silicone humidity display strip is provided inside the observation port and attached to the non-woven fabric curing film layer, and a polyethylene rigid transparent plate is provided on the surface of the observation port.

[0010] The present invention is further configured such that: one end of the flexible spray pipe is connected to a water tank and a control valve is provided on the water tank.

[0011] By adopting the above technical solution, the current humidity of the concrete can be determined by observing the color of the color-changing silicone humidity display strip. This allows for the switching of water supply modes between the water tank and the flexible spray pipe using control valves, thus achieving visible humidity management.

[0012] The present invention is further configured such that: the rock wool layer has a thickness of 15-20mm and a thermal conductivity of ≤0.040W / (m·K); the stainless steel layer has a thickness of 1.2mm; and the surface is coated with a polyurethane anti-corrosion coating with a thickness of ≥50μm.

[0013] The beneficial effects of this utility model are: it can not only effectively improve the installation efficiency of the curing layer without laying it layer by layer, but also set the depth of the curing layer according to the depth of the shaft, thereby effectively covering the lower half of the shaft wall. The setting of the S-shaped flexible spray pipe increases the spraying area of ​​the curing layer concrete and improves the curing efficiency. The spray holes opened at equal intervals of 100mm on the surface of the flexible spray pipe ensure uniform humidity of the shaft wall. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the nonwoven fabric curing film layer in this utility model.

[0017] In the diagram: 1. Inner wall of the shaft; 2. Curing layer; 3. Non-woven fabric curing film layer; 4. Polyethylene film layer; 5. Rock wool layer; 6. Stainless steel layer; 7. Flexible spray pipe; 8. Curing unit; 9. Fixing bolt; 10. Fixing steel ring; 11. Waterproof stud; 12. Observation port; 13. Color-changing silicone humidity display strip; 14. Rigid transparent polyethylene plate. Detailed Implementation

[0018] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] like Figures 1 to 3 As shown, a curing device for the concrete lining of a small-diameter vertical shaft includes a curing layer 2 installed on the inner wall 1 of the vertical shaft via several connectors. The shape of the curing layer 2 matches the curvature of the inner wall of the vertical shaft. The curing layer 2 includes, in sequence, a non-woven fabric curing membrane layer 3, a polyethylene film layer 4, a rock wool layer 5, and a stainless steel layer 6 in the direction away from the inner wall 1 of the vertical shaft. A flexible spray water pipe 7 with a diameter of 10 mm is sandwiched inside the non-woven fabric curing membrane. The flexible spray water pipe 7 has several spray holes with a diameter of 0.5-1 mm at 100 mm intervals on its surface. The flexible spray water pipe 7 is arranged in an S-shape from top to bottom inside the non-woven fabric curing membrane layer 3.

[0020] By setting the curing layer 2 on the concrete, the installation efficiency of the curing layer 2 can be effectively improved, eliminating the need for layer-by-layer laying. Moreover, the depth of the curing layer 2 can be set according to the depth of the shaft, thus effectively covering the lower half of the shaft wall. The setting of the S-shaped flexible spray pipe 7 increases the spraying area of ​​the curing layer 2 on the concrete, improving the curing efficiency. The spray holes on the surface of the flexible spray pipe 7 at equal intervals of 100mm ensure uniform humidity of the shaft wall.

[0021] Among them, the non-woven fabric curing film layer 3 is composed of two layers of porous non-woven fabric, and the flexible spray water pipe 7 is sandwiched in the two layers of non-woven fabric. The non-woven fabric pore size is ≤0.5mm, which is used to evenly diffuse moisture.

[0022] The polyethylene film layer 4 is made of a polyethylene film with a thickness of 0.2 mm and is used to prevent moisture from penetrating into the rock wool layer 5.

[0023] The rock wool layer 5 has a thickness of 15-20mm and a thermal conductivity of ≤0.040W / (m·K), serving both thermal insulation and heat insulation functions.

[0024] The stainless steel layer 6 is 1.2 mm thick and is coated with a polyurethane anti-corrosion coating with a thickness of ≥50 μm to enhance the durability of the overall protective layer 2 structure.

[0025] like Figure 2 As shown, the curing layer 2 includes several curing units 8 that are interconnected to form a ring-shaped closed structure. Bolt holes are pre-embedded in the inner wall 1 of the shaft. The connecting parts are several fixing bolts 9 set on the curing units 8. Adjacent curing units 8 are also connected by stainless steel bolts.

[0026] The curing layer 2 is composed of several curing units 8 connected by stainless steel bolts, which allows the curing layer 2 to be divided into several modules. When installing the curing layer 2, several curing units 8 are installed on the inner wall 1 of the shaft using fixing bolts 9, and then adjacent curing units 8 are connected by stainless steel bolts to form the curing layer 2, which makes the installation of the curing layer 2 more convenient and improves the installation efficiency.

[0027] As shown in the figure, the top and bottom of the curing unit 8 are provided with fixing steel rings 10 that match the curvature of the curing unit 8, and the non-woven curing film layer 3, polyethylene film layer 4, rock wool layer 5 and stainless steel layer 6 are anchored by waterproof studs 11.

[0028] By using the fixing steel ring 10 and the waterproof studs 11, the non-woven fabric protective film layer 3, the polyethylene film layer 4, the rock wool layer 5 and the stainless steel layer 6 can be tightly connected to prevent the protective layer 2 from falling off.

[0029] like Figure 2 As shown, an observation port 12 is provided on the inner wall of the curing unit 8. A color-changing silicone humidity display strip 13 is provided inside the observation port 12 and is attached to the non-woven fabric curing film layer 3. A rigid transparent polyethylene plate 14 is provided on the surface of the observation port 12.

[0030] The active ingredient of the color-changing silicone humidity display strip 13 is cobalt chloride (CoCl2), and its color response humidity range is 20%-80%RH, with the color changing from blue to pink. In addition, one end of the flexible spray pipe 7 is connected to a water tank, and the water tank is equipped with a control valve, a water level sensor and a filter. By observing the color of the color-changing silicone humidity display strip 13, the current humidity of the concrete can be determined. The control valve can then be used to switch the water supply mode of the water tank and the water supply mode of the flexible spray pipe 7, thus achieving visible humidity management.

[0031] In another embodiment, a color recognition sensor can be installed at the observation port 12, directly opposite the color-changing silicone humidity display strip 13, and the color recognition sensor can be connected to the control valve. When the color recognition sensor detects that the humidity strip >50% area is pink, the flexible spray pipe 7 is switched to low-frequency spraying, i.e., spraying for 3 minutes at 60-minute intervals.

[0032] Workflow:

[0033] First, the non-woven fabric curing film layer 3 and the flexible spray water pipe 7 are pre-embedded and fixed. Then, the polyethylene film layer 4, rock wool layer 5, and stainless steel plate layer are stacked and anchored with waterproof studs 11 (Φ8×50mm, spacing 150mm) to form the curing unit 8.

[0034] An observation port 12 is set in each curing unit 8, a cobalt chloride color-changing silica gel humidity display strip 13 is attached, and a polyethylene transparent plate is covered at the observation port 12; then the curing unit 8 is connected to the fixing steel ring 10, and several curing units 8 are fixed to the concrete structure surface to form a ring structure by stainless steel bolts and fixing bolts 9.

[0035] Then connect the flexible spray pipe to the water tank and start the intermittent spray mode, that is, spray for 5 minutes and then at a 30-minute interval. Observe the color change of the color-changing silica gel humidity display bar 13: when the area of ​​the display bar >50% turns pink, switch to low-frequency spray, that is, spray for 3 minutes and then at a 60-minute interval.

[0036] Once the concrete reaches the required strength, the curing unit 8 is dismantled and moved to the next construction section.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A curing device for concrete lining of small-diameter vertical shafts, characterized in that: The system includes a curing layer (2) installed on the inner wall (1) of the shaft via several connectors. The curing layer (2) includes, in sequence, a non-woven fabric curing film layer (3), a polyethylene film layer (4), a rock wool layer (5), and a stainless steel layer (6) in the direction away from the inner wall (1) of the shaft. A flexible spray pipe (7) in an S-shape is sandwiched inside the non-woven fabric curing film from top to bottom, and the surface of the flexible spray pipe (7) is provided with several spray holes with a diameter of 0.5-1mm.

2. The curing device for the concrete lining of small-diameter vertical shafts according to claim 1, characterized in that: The curing layer (2) includes several curing units (8) that are interconnected to form a ring-shaped closed structure. Bolt holes are pre-embedded on the inner wall (1) of the shaft. The connecting parts are several fixing bolts (9) set on the curing unit (8).

3. A curing device for the inner lining concrete of small-diameter vertical shafts according to claim 2, characterized in that: The top and bottom of the maintenance unit (8) are provided with fixing steel rings (10) that match the curvature of the maintenance unit (8).

4. A curing device for concrete lining of small-diameter vertical shafts according to claim 2, characterized in that: An observation port (12) is provided on the inner wall of the maintenance unit (8). A color-changing silicone humidity display strip (13) is provided inside the observation port (12) and attached to the non-woven fabric maintenance film layer (3). A polyethylene rigid transparent plate (14) is provided on the surface of the observation port (12).

5. A curing device for concrete lining of small-diameter vertical shafts according to claim 1, characterized in that: The nonwoven fabric protective film layer (3), polyethylene film layer (4), rock wool layer (5) and stainless steel layer (6) are anchored together by waterproof studs (11).

6. A curing device for concrete lining of small-diameter vertical shafts according to claim 1, characterized in that: One end of the flexible spray pipe (7) is connected to a water tank and a control valve is installed on the water tank.

7. A curing device for the inner lining concrete of small-diameter vertical shafts according to claim 1, characterized in that: The rock wool layer (5) has a thickness of 15-20 mm and a thermal conductivity of ≤0.040 W / (m·K). The stainless steel layer (6) has a thickness of 1.2 mm and is coated with a polyurethane anti-corrosion coating with a thickness of ≥50 μm.

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