Foundation structure of water sealing cover plate of tubular unit

Abstract

The utility model discloses a tubular unit water sealing cover plate foundation structure, which relates to the technical field of water sealing cover plate construction, and comprises a tubular unit flow passage and first-stage concrete, a tubular seat upper support column is arranged in the tubular unit flow passage, the first-stage concrete is poured on the tubular unit flow passage, and the tubular seat upper support column is arranged on the tubular unit flow passage. An embedded foundation plate is arranged on the first-stage concrete, paired wedge plates are arranged on the embedded foundation plate, and a first pull anchor is arranged on the side wall of the first-stage concrete. The water sealing cover plate foundation is poured through two stages of concrete, through-flow unit flow channel inlet concrete only needs to be provided with a bent frame and a formwork at a time, the construction procedure is simplified, the high-altitude operation risk is reduced, after the first-stage concrete is formed, the first-stage concrete can serve as an installation operation platform of the water sealing cover plate body and the foundation of the water sealing cover plate body, and the construction efficiency is improved. A good operation space is provided for construction, safety and reliability are improved, and therefore operators are safer during construction.

Description

Technical Field

[0001] The utility model relates to the technical field of water sealing cover plate construction, in particular to a water sealing cover plate foundation structure of a tubular unit. Background Art

[0002] The water-sealing cover plate is a critical flow-passing and pressure-bearing component of a bulb-type tubular turbine unit, and serves as the sole access point for hoisting generator components. Due to its large dimensions, heavy weight, and location at the top of the turbine's flow channel inlet, it must withstand the immense water pressure of the flow channel and presents significant construction challenges. The foundation structure and installation plan for the water-sealing cover plate are directly related to its construction quality and are crucial to the unit's safe and reliable operation. Conventional experience dictates that the water-sealing cover plate be poured in a single phase of concrete: concrete is poured first at the top of the flow channel inlet, reserving holes for the water-sealing cover plate and its foundation. Rebar is also reserved in the first phase of concrete before installation and construction of the water-sealing cover plate and its foundation are performed.

[0003] During the construction of the existing water sealing cover plate, since the top concrete of the flow channel inlet and the foundation concrete of the water sealing cover plate are constructed in stages, it is necessary to set up racks in stages to fix the concrete formwork at different stages, and to carry out construction work on the racks and formwork. This is not only labor-intensive, but also due to the large height of the flow channel inlet, there is a risk of high-altitude work in the construction of high racks. Utility Model Content

[0004] In order to improve the above-mentioned existing water sealing cover plate, during construction, due to the phased construction of the top concrete of the flow channel inlet and the foundation concrete of the water sealing cover plate, it is necessary to set up racks in stages to fix the concrete formwork at different stages, and to carry out construction work on the racks and formwork, which is not only labor-intensive, but also has the risk of high-altitude work due to the large height of the flow channel inlet. The utility model provides a foundation structure of the water sealing cover plate of a cross-flow unit.

[0005] The utility model proposes a water sealing cover plate foundation structure of a tubular unit, comprising a tubular unit flow channel and first-phase concrete, wherein a tubular seat upper support is arranged inside the tubular unit flow channel, the first-phase concrete is cast and arranged on the tubular unit flow channel, a pre-buried foundation plate is arranged on the first-phase concrete, a pair of wedge plates are arranged on the pre-buried foundation plate, a first anchor is arranged on the side wall of the first-phase concrete, a frame foundation is arranged on the inner side of the first-phase concrete, a tensioner is arranged on the frame foundation, a second anchor is fixedly arranged on one end of the tensioner away from the frame foundation, a hook end of the second anchor is connected to the first anchor, a water sealing cover plate body is arranged on the frame foundation, and second-phase concrete is cast on the frame foundation after the first-phase concrete.

[0006] Optionally, in the above-mentioned water sealing cover plate foundation structure of a cross-flow unit, the first phase concrete includes an upstream side and left and right sides.

[0007] Optionally, in the above-mentioned water sealing cover plate foundation structure of a cross-flow unit, the first-phase concrete is used to support and level the water sealing cover plate body and the frame foundation through the embedded foundation plate.

[0008] Optionally, in the above-mentioned cross-flow unit water sealing cover plate foundation structure, the frame foundation is used to adjust the height of the frame foundation through a wedge plate.

[0009] Optionally, in the above-mentioned water sealing cover plate foundation structure of a cross-flow unit, a drainage pipe for drainage is provided on the frame foundation.

[0010] Optionally, in the above-mentioned water sealing cover plate foundation structure of a cross-flow unit, two O-rings are provided on the frame foundation, the O-rings are provided between the water sealing cover plate body and the frame foundation, and the water sealing cover plate body is provided with several leak detection holes between the two O-rings.

[0011] Optionally, in the above-mentioned water sealing cover plate foundation structure of a cross-flow unit, the water sealing cover plate body is connected to the frame foundation by connecting bolts.

[0012] In summary, the present invention has at least one of the following beneficial effects:

[0013] The foundation of the water sealing cover plate is poured in two phases. The concrete for the flow channel inlet of the tubular unit only requires the setting up of racks and formwork in one step, which simplifies the construction process and reduces the risk of high-altitude operations. After the first phase of concrete is formed, it can be used as an installation platform for the main body of the water sealing cover plate and its foundation, providing a good working space for construction and improving safety and reliability. Therefore, it is safer for operators to carry out construction.

[0014] By eliminating the conventional structure that uses anchor bolts for adjustment and fixing, not only the processing workload is reduced, but also the trouble of difficult adjustment due to inaccurate pre-embedded anchor bolts is saved. A leak detection hole is provided between the frame foundation and the main body of the water sealing cover to detect the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a longitudinal cross-sectional view of the inlet of the flow passage of the tubular unit of the utility model;

[0016] Figure 2 It is a plan layout diagram of the utility model;

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the AA position in the middle;

[0018] Figure 4 This utility model Figure 3 A magnified view of the structure at center A;

[0019] Figure 5 This utility model Figure 2 Schematic diagram of the middle BB;

[0020] Figure 6 It is a schematic diagram of the leak detection hole of the present utility model.

[0021] In the figure: 1. Flow channel of the tubular unit; 2. First-phase concrete; 3. Support pillars on the tubular base; 4. Embedded foundation plate; 5. Wedge plate; 6. First anchor; 7. Frame foundation; 71. Drain pipe; 72. O-ring; 8. Tensioner; 9. Second anchor; 10. Water sealing cover plate body; 11. Second-phase concrete; 12. Leak detection hole; 13. Drain ring pipe. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-6 The utility model is described in further detail.

[0023] Please refer to the attached figure in the instruction manual Figure 1-6 The present invention provides an embodiment of a tubular unit water sealing cover plate foundation structure, comprising a tubular unit flow channel 1 and a first-stage concrete 2, the first-stage concrete 2 including an upstream side and left and right sides. Tubular support columns 3 are disposed within the tubular unit flow channel 1. The first-stage concrete 2 is poured and disposed on the tubular unit flow channel 1. A pre-embedded foundation plate 4 is disposed on the first-stage concrete 2. The pre-embedded foundation plate 4 is welded to a steel mesh before the concrete is poured on the tubular support columns.

[0024] It should be noted that the direction of the arrows in the drawings in the specification is the direction of water flow.

[0025] A pair of wedge plates 5 are provided on the embedded foundation plate 4, and a first tension anchor 6 is provided on the side wall of the first phase concrete 2, which is fixed by lap welding to the steel bars in the first phase concrete 2; a frame foundation 7 is provided on the inner side of the first phase concrete 2, and the frame foundation 7 is used to adjust the height of the frame foundation 7 through the wedge plate 5.

[0026] A drainage pipe 71 for drainage is provided on the frame foundation 7, and the drainage pipe 71 facilitates the drainage of accumulated water.

[0027] Two O-rings 72 are provided on the frame foundation 7. The O-rings 72 are provided between the water sealing cover plate body 10 and the frame foundation 7. The water sealing cover plate body 10 is provided with a plurality of leak detection holes 12 between the two O-rings 72. The O-rings 72 are used to increase the sealing between the water sealing cover plate body 10 and the frame foundation 7. The leak detection holes 12 are used to detect the sealing between the water sealing cover plate body 10 and the frame foundation 7.

[0028] A tensioner 8 is provided on the frame foundation 7. A second anchor 9 is fixedly provided on one end of the tensioner 8 away from the frame foundation 7. The hook end of the second anchor 9 is connected to the first anchor 6. The tensioner 8 and the lap welding length are adjusted according to the actual situation on site.

[0029] A water sealing cover plate body 10 is provided on the frame foundation 7 , and the first-phase concrete 2 is used to support and level the water sealing cover plate body 10 and the frame foundation 7 through the embedded foundation plate 4 .

[0030] The water sealing cover plate body 10 is connected to the frame foundation 7 by connecting bolts, thereby fixing the two together; the frame foundation 7 is poured with the second phase concrete 11 after the first phase concrete 2.

[0031] In summary: first, a bent frame and formwork are set up in the flow channel 1 of the tubular unit. Then, the first-phase concrete 2 is poured, and the first anchor 6 is pre-embedded in the side of the first-phase concrete 2. After the first-phase concrete 2 reaches the curing period, the frame foundation 7 is hoisted into the machine pit, and pairs of wedge plates 5 are placed on each pre-embedded foundation plate 4. The wedge plates 5 are used to adjust the elevation of the frame foundation 7 and the horizontality of the upper flange surface.

[0032] Then connect the hook end of the second anchor 9 to the first anchor 6 embedded in the first-phase concrete 2, and adjust the length of each tensioner 8 to accurately position the frame foundation 7;

[0033] After the frame foundation 7 is adjusted into place, the water sealing cover plate body 10 is hoisted into place and combined with the frame foundation 7 with connecting bolts. After the water sealing cover plate body 10 and the frame foundation 7 are all adjusted into place to meet the requirements, the second phase concrete 11 is poured together with the support 3 on the downstream side pipe seat.

[0034] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water sealing cover plate foundation structure for a tubular unit, comprising a tubular unit flow channel (1) and a first-stage concrete (2), characterized in that: A tubular support upper support (3) is provided inside the cross-flow unit flow passage (1), the first-phase concrete (2) is cast and arranged on the cross-flow unit flow passage (1), a pre-buried foundation plate (4) is provided on the first-phase concrete (2), a pair of wedge plates (5) are provided on the pre-buried foundation plate (4), a first anchor (6) is provided on the side wall of the first-phase concrete (2), a frame foundation (7) is provided inside the first-phase concrete (2), a tensioner (8) is provided on the frame foundation (7), a second anchor (9) is fixedly provided at one end of the tensioner (8) away from the frame foundation (7), a hook end of the second anchor (9) is connected to the first anchor (6), a water sealing cover plate body (10) is provided on the frame foundation (7), and a second-phase concrete (11) is cast on the frame foundation (7) after the first-phase concrete (2).

2. The water sealing cover plate foundation structure of a tubular unit according to claim 1, characterized in that: The first-stage concrete (2) includes an upstream side and left and right sides.

3. The water sealing cover plate foundation structure of a tubular unit according to claim 1, characterized in that: The first-phase concrete (2) is used to support and level the water-sealing cover plate body (10) and the frame foundation (7) through the pre-buried foundation plate (4).

4. The water sealing cover plate foundation structure of a tubular unit according to claim 1, characterized in that: The frame foundation (7) is used to adjust the height of the frame foundation (7) through the wedge plate (5).

5. The water sealing cover plate foundation structure of a tubular unit according to claim 1, characterized in that: A drainage pipe (71) for drainage is provided on the frame foundation (7).

6. The water sealing cover plate foundation structure of a tubular unit according to claim 5, characterized in that: Two O-rings (72) are provided on the frame foundation (7), and the O-rings (72) are provided between the water sealing cover plate body (10) and the frame foundation (7), and the water sealing cover plate body (10) is provided with a plurality of leak detection holes (12) between the two O-rings (72).

7. The water sealing cover plate foundation structure of a tubular unit according to claim 1, characterized in that: The water sealing cover plate body (10) is connected to the frame foundation (7) via connecting bolts.

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