Novel plugging body structure for steel lining opening

Abstract

The utility model provides a novel plugging body structure with a steel lining open hole, which comprises a steel lining, a screw, a nut and a welding seam, the steel lining is provided with a steel lining inner wall on a water facing side and a steel lining outer wall on a backwater side, the steel lining inner wall of the steel lining is provided with a circular-truncated-cone-shaped drill hole, and the screw and the nut are screwed into the steel lining to the outer wall of the steel lining through hexagonal nuts on the screw and the nut. A gap between the nut and the circular-truncated-cone-shaped drill hole is filled with the welding seam. The utility model has the advantages of safety and reliability, moderate stress, convenience in construction, avoidance of damage and guarantee of water tightness.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic structures, and particularly relates to a novel sealing body structure for steel lining with holes. Background Art

[0002] In hydraulic structures, steel lining structures are often selected. Due to factors such as pouring quality problems or local shrinkage of concrete on the back side of the steel lining structure, problems of cavities behind are likely to occur, which will further lead to problems of excessive local stress on the steel lining. Moreover, if the design assumption of the combined stress of the steel lining and surrounding rock is not locally established, it is necessary to drill holes for contact grouting in the cavity part, and then perform reasonable sealing after the grouting is completed.

[0003] Regarding the sealing problem of the steel lining structure, it is necessary to ensure that the sealing body is reasonably stressed, not damaged when the steel lining is stressed, and there are no concentrated leakage points during the operation of the power station. Content of the Utility Model

[0004] The purpose of the utility model is to provide a novel sealing body structure for steel lining with holes that is safe and reliable, has appropriate stress, is convenient for construction, avoids damage and ensures water tightness.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] A novel sealing body structure for steel lining with holes includes a steel lining. The steel lining has a steel lining inner wall on the water-facing side and a steel lining outer wall on the water-backing side. It also includes a screw rod, a nut, and a weld. A frustum-shaped drilling is opened on the steel lining inner wall of the steel lining. The screw rod and the nut are screwed into the steel lining through the hexagon nut on it until the steel lining outer wall, and the weld fills the gap between the nut and the frustum-shaped drilling.

[0007] Further, the weld is constructed in three layers, including a first layer weld, a second layer weld, and a third layer weld.

[0008] Further, after the third layer weld and the nut are polished, they form an integral structure with the steel lining.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] The novel sealing body structure for steel lining with holes of the utility model is safe and reliable, has appropriate stress, is convenient for construction, avoids damage and ensures water tightness.

[0011] The above structure increases the connection strength between the sealing body and the steel lining, ensures the reasonable implementation of the weld, solves the problem of connection tightness of the conventional sealing body, and provides a solution for the stress and waterproofness of the steel lining. Description of the Drawings

[0012] Figure 1It is a schematic longitudinal sectional structure diagram of the present utility model.

[0013] Figure 2 It is Figure 1 a schematic diagram of the A-A section in

[0014] Figure 3 a schematic structure diagram of the construction step S1) of the present utility model.

[0015] Figure 4 a schematic structure diagram of the construction step S2) of the present utility model.

[0016] Figure 5 a schematic structure diagram of the construction step S3) of the present utility model.

[0017] Figure 6 a schematic structure diagram of the construction step S4) of the present utility model.

[0018] Figure 7 a schematic structure diagram of the construction step S5) of the present utility model.

[0019] Reference numerals: 1, steel lining; 2, screw; 3, nut; 4, weld; 5, frustum-shaped drilling; 6, hexagonal nut; 7, first layer of weld; 8, second layer of weld; 9, third layer of weld; 10, outer wall of steel lining; 11, inner wall of steel lining. Detailed implementation manners

[0020] The following further describes the embodiments of the present utility model in detail with reference to the drawings.

[0021] As Figure 1 , 2 shown, a novel plug structure for opening holes in a steel lining includes a steel lining 1. The steel lining 1 has an inner wall 11 of the steel lining on the water-facing side and an outer wall 10 of the steel lining on the water-backing side. It also includes a screw 2, a nut 3, and a weld 4. A frustum-shaped drilling 5 is opened on the inner wall 11 of the steel lining 1. The screw 2 and the nut 3 are screwed into the steel lining 1 through the hexagonal nut 6 thereon until they reach the outer wall 10 of the steel lining, so that the end of the screw 2 is flush with the outer wall 10 of the steel lining. The weld 4 fills the gap between the nut 3 and the frustum-shaped drilling 5. The weld 4 is constructed in three layers, including the first layer of weld 7, the second layer of weld 8, and the third layer of weld 9. The third layer of weld 9 and the nut 3 are polished and integrated with the steel lining 1.

[0022] As Figures 3 - 7 shown, the working principle of the present utility model is as follows:

[0023] Step S1) Enlarge and drill a frustum-shaped drilling 5 at the cavity position of the inner wall 11 (water-facing side) of the steel lining 1;

[0024] Step S2): Thread the drilled hole, and use the hexagonal nut 6 to screw the screw rod 2 into the steel lining 1 so that the end of the screw rod 2 is flush with the outer wall of the steel lining 10 (the water-facing side);

[0025] Step S3): Perform the construction operation of the first layer of weld 7 on the frustum-shaped drilled hole 5;

[0026] Step S4): Perform the construction operation of the second layer of weld 8 on the frustum-shaped drilled hole 5, and cut off the hexagonal nut 6 at the top;

[0027] Step S5): Perform the construction operation of the third layer of weld 9 on the frustum-shaped drilled hole 5;

[0028] Step S6): Grind the third layer of weld 9 and the nut 3, and grind off the residues such as welding slag to complete the plugging operation of the opening of the steel lining 1.

[0029] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A new type of plugging body structure for an opening in a steel lining, including a steel lining, the steel lining having an inner wall of the steel lining on the water-facing side and an outer wall of the steel lining on the water-backing side, characterized in that: It also includes a screw, a nut, and a weld. A frustum-shaped drilling is provided on the inner wall of the steel lining. The screw and the nut are screwed into the steel lining through the hexagon nut on them until they reach the outer wall of the steel lining. The weld is filled in the gap between the nut and the frustum-shaped drilling.

2. The novel plugging body structure for steel lining opening according to claim 1, characterized in that: The weld is constructed in three layers, including the first layer weld, the second layer weld, and the third layer weld.

3. The novel plugging body structure for steel lining hole opening according to claim 2, wherein: After being polished, the third layer weld and the nut form an integral structure with the steel lining.

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