Steel structure surge chamber mounting structure

Abstract

A steel structure surge chamber installation structure comprises a surge chamber and a pressure pipeline, the surge chamber and the pressure pipeline are communicated through a connecting pipeline, the connecting pipeline comprises a first connecting section and a second connecting section, one end of the first connecting section and one end of the second connecting section are connected with the surge chamber and the pressure pipeline respectively, and the other ends of the first connecting section and the second connecting section are connected through a corrugated pipe. An elastic material is further arranged on the outer wall of the connecting pipeline and surrounds the corrugated pipe; concrete layers are arranged on the outer walls of the pressure regulating chamber, the pressure pipeline and the connecting pipeline. The corrugated pipe is arranged on the connecting pipeline, the elastic material is arranged on the outer wall of the corrugated pipe, and the concrete layers are arranged on the outer walls of the surge chamber, the pressure pipeline and the connecting pipeline, so that the influence of the low-temperature environment on the surge chamber, the pressure pipeline and the connecting pipeline is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of surge chambers in hydropower stations, in particular to an installation structure of a steel structure surge chamber. Background Art

[0002] A hydropower station project is located in Aksu area, where the temperature is relatively low in winter, with the historical extreme minimum temperature as low as -27.4 degrees Celsius. The impact of temperature needs to be considered in the installation and connection of the surge chamber and pressure steel pipe.

[0003] Chinese patent document CN211285530U, published (announcement) date: 2020.08.18, discloses a surge chamber arrangement structure, including a surge chamber and a water delivery system, the surge chamber is an air cushion surge chamber, the bottom of the surge chamber is connected to the water delivery system through a connecting pipe, the surge chamber includes a circular steel pipe, and the two ends of the circular steel pipe are fixedly connected to the steel head through a conical steel pipe to form an air chamber with a closed structure; the end of the conical steel pipe connected to the circular steel pipe is the large diameter end, and the end connected to the steel head is the small diameter end; the bottom of the circular steel pipe is connected to the water delivery system through a connecting pipe. Its feature is that when the terrain along the water delivery system is incomplete or the buried depth is shallow, the utility model can also be implemented in the form of an air cushion surge chamber to save the investment in the water diversion project along the line; its shortcoming is that the document does not consider the impact of the low temperature environment on the surge chamber, pressure pipeline and connecting pipeline. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, to provide a steel structure pressure regulating chamber installation structure, to reduce the influence of low temperature environment on the pressure regulating chamber, pressure pipeline and connecting pipeline.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a steel structure pressure regulating chamber installation structure, including a pressure regulating chamber and a pressure pipeline, the pressure regulating chamber and the pressure pipeline are connected through a connecting pipeline, the connecting pipeline includes a first connecting section and a second connecting section, one end of the first connecting section and the second connecting section are respectively connected to the pressure regulating chamber and the pressure pipeline, and the other ends are connected to each other through a bellows, the outer wall of the connecting pipeline is also provided with an elastic material, and the elastic material surrounds the bellows; the outer walls of the pressure regulating chamber, the pressure pipeline and the connecting pipeline are provided with a concrete layer.

[0006] The pressure regulating chamber is in the shape of a spindle with small diameters at both ends and a large diameter in the middle.

[0007] The pressure regulating chamber is an air cushion type pressure regulating chamber.

[0008] An elastic pad is installed outside the connecting pipe and at one end of the elastic material, and the elastic pad separates the concrete layer.

[0009] The pressure regulating chamber is located above the side of the pressure pipe, one end of the first connecting section is longitudinally connected to the bottom of the pressure regulating chamber, and the other end is transversely connected to the bellows, and both ends of the second connecting section are transversely connected to the bellows and the pressure pipe respectively.

[0010] The elastic material is asphalt or a rubber pad adapted to the corrugated pipe.

[0011] The pressure regulating chamber, pressure pipeline and connecting pipeline are buried below the ground.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model reduces the influence of low temperature environment on the pressure regulating chamber, the pressure pipeline and the connecting pipeline by arranging a bellows on the connecting pipeline, arranging elastic material on the outer wall of the bellows, and arranging a concrete layer on the outer wall of the pressure regulating chamber, the pressure pipeline and the connecting pipeline.

[0014] 2. The utility model installs an elastic pad on the outside of the connecting pipe and at one end of the elastic material. The elastic pad separates the concrete layer. When the concrete layer expands and contracts due to heat, the gap is adjusted through the elastic pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model from top view.

[0017] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0018] Figure 3 for Figure 1 Schematic diagram of the BB section structure.

[0019] Figure 4 for Figure 2 Schematic diagram of the CC cross-section structure.

[0020] In the figure: a pressure regulating chamber 10, a pressure pipe 20, a connecting pipe 30, a first connecting section 31, a second connecting section 32, a bellows 33, an elastic material 34, an elastic pad 35, and a concrete layer 40. DETAILED DESCRIPTION

[0021] See also Figure 1-4A steel structure pressure regulating chamber installation structure includes a pressure regulating chamber 10 and a pressure pipeline 20, the pressure regulating chamber 10 and the pressure pipeline 20 are connected through a connecting pipeline 30, the connecting pipeline 30 includes a first connecting section 31 and a second connecting section 32, one end of the first connecting section 31 and the second connecting section 32 are respectively connected to the pressure regulating chamber 10 and the pressure pipeline 20, and the other end is connected to each other through a bellows 33, and the outer wall of the connecting pipeline 30 is also provided with an elastic material 34, and the elastic material 34 surrounds the bellows 33; the outer walls of the pressure regulating chamber 10, the pressure pipeline 20 and the connecting pipeline 30 are provided with a concrete layer 40. By providing the bellows 33 on the connecting pipeline 30, and providing the elastic material 34 on the outer wall of the bellows 33, and also providing the concrete layer 40 on the outer walls of the pressure regulating chamber 10, the pressure pipeline 20 and the connecting pipeline 30, the influence of the low temperature environment on the pressure regulating chamber, the pressure pipeline and the connecting pipeline is reduced.

[0022] Specifically, the surge chamber 10 is made of 600MPa high-strength steel, the surge chamber 10 is covered with reinforced concrete with a thickness of 1.5m, and the bottom is 2.0m thick. The connecting pipeline 30 steel pipe is made of Q345R steel, and the steel pipe is covered with reinforced concrete with a thickness of 1.5m.

[0023] The bellows 33 adopts a bellows expansion joint. During installation, the first connecting section 31 and the second connecting section 32 can be welded to both ends of the bellows expansion joint, or can be connected by a flange plus bolts.

[0024] In one implementation, see Figure 1 The pressure regulating chamber 10 is spindle-shaped with small diameters at both ends and a large diameter in the middle.

[0025] Of course, the pressure regulating chamber 10 may also be other structures, such as a capsule shape.

[0026] Specifically, the pressure regulating chamber 10 is an air cushion type pressure regulating chamber.

[0027] See also Figure 2 An elastic pad 35 is installed outside the connecting pipe 30 and at one end of the elastic material 34. The elastic pad 35 separates the concrete layer 40. When the concrete layer 40 expands and contracts due to heat, the gap is adjusted through the elastic pad 35. The elastic pad 35 can be a rubber pad or a closed-cell foam board.

[0028] In one implementation, see Figure 1-3 The pressure regulating chamber 10 is located above the side of the pressure pipe 20. One end of the first connecting section 31 is longitudinally connected to the bottom of the pressure regulating chamber 10, and the other end is transversely connected to the bellows 33. The two ends of the second connecting section 32 are transversely connected to the bellows 33 and the pressure pipe 20. The pressure regulating chamber 10 is located above the side of the pressure pipe 20 to facilitate layered excavation construction. Figure 3, reducing the interference between the construction of the pressure regulating chamber 10 and the pressure pipeline 20.

[0029] In a preferred solution, the elastic material 34 is asphalt or a rubber pad adapted to the corrugated pipe 33. By providing the elastic material 34, the corrugated pipe 33 has a space for expansion and contraction. Specifically, the corrugated pipe 33 is surrounded by the concrete layer 40.

[0030] See also Figure 2 , 3 The pressure regulating chamber 10, the pressure pipe 20 and the connecting pipe 30 are buried below the ground, further reducing the impact of the project environment and winter freezing on the operation of the water supply system of the power station. Specifically, the backfill material is gravel soil.

Claims

1. A steel structure pressure regulating chamber installation structure, comprising a pressure regulating chamber (10) and a pressure pipeline (20), wherein the pressure regulating chamber (10) and the pressure pipeline (20) are connected via a connecting pipeline (30), characterized in that: The connecting pipe (30) comprises a first connecting section (31) and a second connecting section (32); one end of the first connecting section (31) and the second connecting section (32) are respectively connected to the pressure regulating chamber (10) and the pressure pipe (20); the other ends are connected to each other via a bellows (33); an outer wall of the connecting pipe (30) is further provided with an elastic material (34), and the elastic material (34) surrounds the bellows (33); and the outer walls of the pressure regulating chamber (10), the pressure pipe (20) and the connecting pipe (30) are provided with a concrete layer (40).

2. A steel structure surge chamber installation structure according to claim 1, characterized in that: The pressure regulating chamber (10) is in the shape of a spindle with small diameters at both ends and a large diameter in the middle.

3. A steel structure surge chamber installation structure according to claim 1 or 2, characterized in that: The pressure regulating chamber (10) is an air cushion type pressure regulating chamber.

4. The steel structure surge chamber installation structure according to claim 1, characterized in that: An elastic pad (35) is installed outside the connecting pipe (30) and at one end of the elastic material (34), and the elastic pad (35) separates the concrete layer (40).

5. The steel structure surge chamber installation structure according to claim 1, characterized in that: The pressure regulating chamber (10) is located above and to the side of the pressure pipe (20); one end of the first connecting section (31) is longitudinally connected to the bottom of the pressure regulating chamber (10), and the other end is transversely connected to the bellows (33); and both ends of the second connecting section (32) are transversely connected to the bellows (33) and the pressure pipe (20), respectively.

6. The steel structure surge chamber installation structure according to claim 1, characterized in that: The elastic material (34) is asphalt or a rubber pad that is compatible with the corrugated pipe (33).

7. The steel structure surge chamber installation structure according to claim 1, characterized in that: The pressure regulating chamber (10), the pressure pipeline (20) and the connecting pipeline (30) are buried below the ground.

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