Hydropower station pressure steel pipe roundness adjusting and stiffening ring installing device

Abstract

The utility model discloses a hydropower station pressure steel pipe roundness adjusting and stiffening ring mounting device which comprises a roundness adjusting part and a stiffening part. The roundness adjusting part comprises a jacking oil cylinder arranged on the ground, a transverse supporting rod horizontally facing one side is fixed to the top of the jacking oil cylinder, a fixed inner supporting rod is arranged at the tail end of the transverse supporting rod, and a telescopic pipe sleeve is further fixed to the tail end of the fixed inner supporting rod; the device further comprises a dome adjusting supporting oil cylinder. And the movable base is arranged on the ground. According to the device, the hoisting and turning-over times in the roundness adjusting procedure are effectively reduced, the occupation of hoisting equipment is reduced, meanwhile, the manufacturing speed of the pressure steel pipe is increased, and the construction period is effectively shortened.

Description

Technical Field

[0001] The utility model relates to the field of pressure steel pipe processing devices, in particular to a pressure steel pipe rounding and stiffening ring installation device for a hydropower station. Background Art

[0002] The penstock manufacturing unit of a hydropower station is generally made of two tiles (half a circle) that are closed into a full circle in the manufacturing plant and then flipped over for longitudinal seam welding. After the initial welding is completed, the penstock needs to be flipped over and changed positions multiple times to adjust the ovality of the pipe, install the internal support, install the stiffening ring, and perform the subsequent longitudinal seam welding process. The entire process requires repeated adjustment of the penstock position and multiple flipping of the penstock, which requires a long time to occupy the lifting equipment, greatly slowing down the production speed of the penstock and lengthening the construction period. At the same time, in the prior art, during the installation of the stiffening ring of the penstock, the stiffening ring and the penstock are generally supported by a top support device, which cannot ensure that the gap between the stiffening ring and the penstock meets the specification requirements, thereby affecting the welding quality of the stiffening ring.

[0003] Therefore, a hydropower station penstock rounding and stiffening ring installation device is proposed to solve the above technical problems. Utility Model Content

[0004] The technical problem solved by the utility model is that in the prior art, the longitudinal seam welding process of the pressure steel pipe and the stiffening ring installation process require multiple flipping and work station conversions, which require the lifting equipment to be occupied for a long time, and the prior art cannot ensure that the gap between the stiffening ring and the pressure steel pipe meets the specification requirements, thereby affecting the welding quality.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is a hydropower station penstock rounding and stiffening ring installation device, including a rounding part for rounding and a stiffening part for installing a stiffening ring;

[0006] The rounding part includes a lifting cylinder arranged on the ground, a horizontal cross brace rod facing one side is fixed on the top of the lifting cylinder, two groups of fixed inner support groups are arranged axially on the cross brace rod, the fixed inner support group includes a plurality of fixed inner support rods arranged radially along the cross brace rod, and a telescopic pipe sleeve is fixed to the end of the fixed inner support rod; it also includes a rounding top support cylinder group arranged between the two groups of fixed inner support groups, the rounding top support cylinder group includes a plurality of rounding top support cylinders uniformly fixed radially along the cross brace rod; it also includes a fixed base with rollers, the fixed base is fixed to the ground on one side of the cross brace rod, and the pressure steel pipe is rotatably placed on the rollers;

[0007] The stiffening part includes a movable base arranged next to the fixed base, and the movable base is provided with a clamping cylinder arranged obliquely toward the outer wall of the pressure steel pipe; it also includes a transverse through hole arranged on the fixed base, and a mounting frame is arranged in the transverse through hole, and the mounting frame is U-shaped with an opening toward one side of the pressure steel pipe, and a clamping rod for clamping the inner wall of the pressure steel pipe is provided on each side of the mounting frame, and the two clamping rods are arranged facing each other.

[0008] Particularly, the fixed base comprises a base plate, and a roller is respectively provided at four corners of the base plate.

[0009] In particular, a protective sleeve with a top opening is provided on the outside of the jacking cylinder, and a lifting column that can move up and down is provided in the opening of the protective sleeve. The lower surface of the lifting column is fixedly connected to the piston rod of the jacking cylinder, and the upper surface of the lifting column is fixedly connected to the cross brace rod.

[0010] Particularly, the two ends of the cross brace extend toward the two sides of the jacking cylinder, and both ends of the cross brace are provided with a fixed inner support group and a dome-adjustable top support cylinder group; a stiffening part is respectively provided on the left and right sides of the jacking cylinder.

[0011] In particular, the mounting frame includes a main rod horizontally passing through a transverse through hole, one end of the main rod is radially fixedly connected to a first connecting rod, the end of the first connecting rod is fixedly connected to a clamping rod, and the other end of the main rod is provided with a threaded connection hole in the same direction as the first connecting rod; it also includes a second connecting rod with a threaded section, one end of the second connecting rod is screwed into the threaded connection hole through the threaded section, and the other end is also fixed with a clamping rod.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model device realizes the lifting and lowering of the cross brace rod through the jacking cylinder, thereby effectively adjusting the position of the fixed inner support group and the rounding top support cylinder group in the pressure steel pipe, effectively reducing the number of hoisting and turning in the rounding process, reducing the occupation of hoisting equipment, and also speeding up the pressure steel pipe production speed, effectively shortening the construction period. At the same time, the installation frame is used to cooperate with the clamping rod to tighten the pressure steel pipe, so that the clamping cylinder can firmly press the stiffening ring against the outer wall of the pressure steel pipe, and can also effectively reduce the gap width between the stiffening ring and the pressure steel pipe, maintain the tight connection between the pressure steel pipe and the stiffening ring, and ensure the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the device of the utility model.

[0014] Figure 2 It is a side structural schematic diagram of the device of the utility model.

[0015] Figure 3 Schematic diagram of the stiffening structure.

[0016] Figure 4 A schematic diagram of the structure of the installation frame.

[0017] The meanings of the numbers in the figure are: lifting cylinder-1; cross support rod-2; fixed inner support rod-3; dome-adjusting top support cylinder-4; base plate-5; roller-6; movable base-7; clamping cylinder-8; installation frame-9; clamping rod-10; protective sleeve-11; lifting column-12; main rod-13; connecting rod-14; threaded connecting hole-15; stiffening ring-16. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0019] like Figure 1 and Figure 2 As shown, a penstock rounding and stiffening ring installation device for a hydropower station comprises a rounding part for rounding and a stiffening part for installing a stiffening ring 16;

[0020] The rounding part includes a lifting cylinder 1 arranged on the ground, a horizontal cross brace 2 facing one side is fixed on the top of the lifting cylinder 1, two groups of fixed inner support groups are arranged axially on the cross brace 2, the fixed inner support groups include a plurality of fixed inner support rods 3 arranged radially along the cross brace 2, and telescopic sleeves are also fixed to the ends of the fixed inner support rods 3; it also includes a rounding top support cylinder group arranged between the two groups of fixed inner support groups, the rounding top support cylinder group includes a plurality of rounding top support cylinders 4 uniformly fixed radially along the cross brace; it also includes a fixed base with a roller 6, the fixed base is fixed to the ground on one side of the cross brace 2, and the pressure steel pipe is rotatably placed on the roller 6;

[0021] The stiffening part includes a mobile base arranged next to the fixed base, and the mobile base is provided with a clamping cylinder 8 arranged obliquely toward the outer wall of the pressure steel pipe; it also includes a transverse through hole arranged on the mobile base, and a mounting frame 9 is arranged in the transverse through hole. The mounting frame 9 is U-shaped with an opening toward one side of the pressure steel pipe, and a clamping rod 10 for clamping the inner wall of the pressure steel pipe is provided on each side of the mounting frame 9, and the two clamping rods 10 are arranged facing each other.

[0022] During actual use of the present invention, after the preliminary welding and fixing of the longitudinal seam of the pressure steel pipe is completed, the telescopic sleeve at the end of the fixed inner support rod 3 is retracted, and then the pressure steel pipe is directly hoisted through the fixed inner support rod 3 of the device by using a gantry crane, and is hoisted into the projection range of the transverse support rod 2, and is placed on the roller 6 of the fixed base, and the dome-adjusting top support cylinder 4 is started, and the ovality of the pressure steel pipe is adjusted 360° by the dome-adjusting top support cylinder 4, and then the fixed inner support rod 3 is cooperated with the telescopic sleeve to support the pressure steel pipe that meets the ovality, and finally the ovality of the pressure steel pipe is tested again. For the installation of the stiffening ring 16, firstly, the stiffening ring 16 is hoisted and fixed to the wall of the pressure steel pipe, and the roller 6 is driven by the driving motor to rotate so as to rotate the pressure steel pipe, and the stiffening ring 16 is clamped in sections by the clamping cylinder 8. During the clamping process, the outer wall of the pressure steel pipe and the stiffening ring 16 are ensured to be tightly connected by the installation frame 9 and the clamping rod 10, so as to reduce the gap between the pressure steel pipe and the stiffening ring 16, and then preliminary welding reinforcement is performed, and the stiffening ring 16 butt joint is welded, and finally, the telescopic sleeve is shortened and the pressure steel pipe is rotated, so as to transfer the pressure steel pipe to the stiffening ring 16 welding station for subsequent welding and fixing. For a pressure steel pipe with multiple stiffening rings 16, a cross plate can also be set at the piston end of the clamping cylinder 8, and the clamping operation of multiple stiffening rings 16 can be performed at one time through the cross plate, so as to improve work efficiency.

[0023] As a preferred embodiment, the fixed base comprises a base plate 5 , and a roller 6 is provided at each of the four corners of the base plate 5 .

[0024] In this embodiment, a structure of a base plate 5 is provided. In this embodiment, four rollers 6 are arranged on the base plate 5, and the four rollers are arranged in a square shape as a whole.

[0025] As a preferred embodiment, the outside of the jacking cylinder 1 is also covered with a protective sleeve 11 with a top opening, and a lifting column 12 that can move up and down is provided in the opening of the protective sleeve 11. The lower surface of the lifting column 12 is fixedly connected to the piston rod of the jacking cylinder 1, and the upper surface of the lifting column 12 is fixedly connected to the cross brace rod 2.

[0026] In this embodiment, the purpose of providing the protective sleeve 11 is to ensure the stability of the cross brace 2 during the lifting process, to prevent the external environment from affecting the jacking cylinder 1 during construction, causing deflection or tipping, causing the pressure steel pipe to slip, and causing safety hazards.

[0027] As a preferred embodiment, both ends of the cross brace rod 2 extend toward both sides of the jacking cylinder 1, and both ends of the cross brace rod are provided with a fixed inner support group and a dome-adjustable top support cylinder group; a stiffening part is respectively provided on the left and right sides of the jacking cylinder 1.

[0028] In this embodiment, by providing a stiffening portion on each side of the top support cylinder 1, and cooperating with the fixed inner support group and the rounding top support cylinder group provided at both ends, the welding and rounding process of two groups of pressure steel pipe sections can be carried out at one time, which greatly shortens the construction period.

[0029] As a preferred embodiment, the mounting frame 9 includes a main rod 13 horizontally passing through a transverse through hole, one end of the main rod 13 is radially fixedly connected to a first connecting rod 14, the end of the first connecting rod 14 is fixedly connected to a clamping rod 10, and the other end of the main rod 13 is provided with a threaded connection hole 15 in the same direction as the first connecting rod 14; it also includes a second connecting rod with a threaded section, one end of the second connecting rod is screwed into the threaded connection hole 15 through the threaded section, and the other end is also fixed with a clamping rod 10.

[0030] In this embodiment, if Figure 3 and Figure 4 As shown, the installation frame 9 is set as a detachable structure, which can ensure that the lifting and lifting process of the pressure steel pipe can be carried out smoothly, and avoid the problem of the pressure steel pipe bumping due to the installation frame 9. Specifically, when the pressure steel pipe needs to be lifted in, first rotate the connecting rod 14 with a threaded section to remove it from the main rod 13, and then pull the main rod 13 to the other end, so that the clamping rod 10 on the other side can avoid the range of the pressure steel pipe, which is convenient for lifting the pressure steel pipe. After lifting, perform the above steps in reverse to complete the installation of the installation frame 9, thereby ensuring that the clamping rods 10 on both sides can effectively clamp the inner wall of the pressure steel pipe.

[0031] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0032] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A device for adjusting the roundness of a penstock and installing a stiffening ring for a hydropower station, characterized in that: It comprises a rounding part for adjusting the roundness and a stiffening part for installing a stiffening ring (16); The rounding part comprises a lifting cylinder (1) arranged on the ground, a horizontal support rod (2) facing one side is fixed on the top of the lifting cylinder (1), two groups of fixed inner support groups are arranged axially on the cross support rod (2), the fixed inner support group comprises a plurality of fixed inner support rods (3) arranged radially along the cross support rod (2), and a telescopic pipe sleeve is fixed at the end of the fixed inner support rod (3); it also comprises a rounding top support cylinder group arranged between the two groups of fixed inner support groups, the rounding top support cylinder group comprises a plurality of rounding top support cylinders (4) uniformly fixed radially along the cross support rod; it also comprises a fixed base with a roller (6), the fixed base is fixed to the ground on one side of the cross support rod (2), and the pressure steel pipe is rotatably placed on the roller (6); The stiffening part comprises a movable base (7) arranged beside the fixed base, the movable base (7) being provided with a clamping oil cylinder (8) arranged obliquely toward the outer wall of the pressure steel pipe; and further comprises a transverse through hole arranged on the movable base (7), a mounting frame (9) being arranged in the transverse through hole, the mounting frame (9) being U-shaped with an opening toward one side of the pressure steel pipe, and a clamping rod (10) for clamping the inner wall of the pressure steel pipe being provided on each side of the mounting frame (9), the two clamping rods (10) being arranged facing each other.

2. A hydropower station penstock rounding and stiffening ring installation device as claimed in claim 1, characterized in that: The fixed base comprises a base plate (5), and a roller (6) is provided at each of the four corners of the base plate (5).

3. A hydropower station penstock rounding and stiffening ring installation device as claimed in claim 1, characterized in that: The outside of the lifting cylinder (1) is also provided with a protective sleeve (11) with a top opening, and a lifting column (12) that can move up and down is provided in the opening of the protective sleeve (11), the lower surface of the lifting column (12) is fixedly connected to the piston rod of the lifting cylinder (1), and the upper surface of the lifting column (12) is fixedly connected to the cross brace (2).

4. A hydropower station penstock rounding and stiffening ring installation device as claimed in claim 1, characterized in that: The two ends of the cross brace (2) extend toward the two sides of the jacking cylinder (1), and both ends of the cross brace are provided with a fixed inner support group and a dome-adjustable top support cylinder group; a stiffening portion is provided on the left and right sides of the jacking cylinder (1), respectively.

5. A hydropower station penstock rounding and stiffening ring installation device as claimed in claim 1, characterized in that: The mounting frame (9) comprises a main rod (13) horizontally penetrating the transverse through hole, one end of the main rod (13) being fixedly connected to a first connecting rod (14) in a radial direction, the end of the first connecting rod (14) being fixedly connected to a clamping rod (10), and the other end of the main rod (13) being provided with a threaded connecting hole (15) in the same direction as the first connecting rod (14); and further comprising a second connecting rod with a threaded section, one end of the second connecting rod being screwed into the threaded connecting hole (15) through the threaded section, and the other end of the second connecting rod also being fixed to a clamping rod (10).

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