Swing-type casing hanger

Abstract

The application discloses a swing type casing support, which comprises a frame body composed of four L-shaped steel plates, a top frame arranged at the top of the frame body and swing connected with the frame body, and a base arranged at the bottom end position of the frame body and swing connected with the frame body, wherein the top end surface of the base is fixed with a plurality of L-shaped plates which are located outside the frame body, a bolt is penetrated between the L-shaped plates and the frame body, one end of the bolt is clamped to the outside of the L-shaped plate, the other end of the bolt is sleeved with a nut and clamped to the inside surface of the frame body, the nut is in plane fitting state with the inside surface of the frame body, and the one end of the bolt is also in fitting state with the outside surface of the L-shaped plate. In the application, the casing support is changed from a fixed support to a movable support, so that the support can swing back and forth in the radial direction. The vertical shaft, the horizontal section and the casing are combined into a Z-shaped structure, so that the balance of the overall structure is ensured and the defects in the existing structure are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of hydropower station accessories, specifically relating to a swing-type sleeve support. Background Technology

[0002] In hydropower stations with significant elevation differences, both the switchyards on the left and right banks are located underground. Two 550kV GIL (Gas Injection Line) shafts are installed in the underground main transformer tunnels on both banks, leading the 550kV GIL from the GIS (Gas Injection System) room in the main transformer tunnel to the surface outgoing line yard. The overall orientation of the shafts on both banks is roughly the same. Due to the large elevation difference and the needs of the hub layout, each GIL shaft is divided into two vertical sections: a lower outgoing line tunnel, a lower shaft, an upper outgoing line tunnel, and an upper shaft. The elevation difference of the upper shaft is approximately 250m, and the elevation difference of the lower shaft is approximately 225m.

[0003] Because the vertical shaft of a hydropower station with a large height difference adopts a bottom fixed support structure, the deflection of the entire vertical shaft needs to be absorbed by the angle compensation corrugated pipe of the top horizontal section. The angle compensation corrugated pipe in the horizontal direction can only absorb the expansion and contraction of the vertical shaft section by deflection angle, and cannot absorb the expansion and contraction of the horizontal section itself.

[0004] Traditional GILs have a fixed support at the end of the horizontal section. The elongation deformation of the GIL in the direction of the casing support will be transmitted to the middle of the horizontal section, and the deflection deformation generated in the direction of the vertical shaft will also be transmitted to the middle of the horizontal section. Ultimately, it will act on the weakest part of the angle-compensated bellows, causing the angle-compensated bellows to become unstable. Summary of the Invention

[0005] The purpose of this invention is to provide a swing-type sleeve support to solve the problem mentioned in the background art that the traditional GIL has a fixed support at the end of the horizontal section, which ultimately acts on the angle-compensated bellows where the stiffness is weakest, causing the angle-compensated bellows to become unstable.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a swing-type sleeve support, the sleeve support comprising:

[0007] The frame is composed of four L-shaped steel plates;

[0008] The top frame is set at the top of the frame and is sway-connected to the frame.

[0009] The base is located at the bottom of the frame and is sway-connected to the frame.

[0010] Preferably, the top surface of the base is fixed with multiple L-shaped plates, which are located on the outer side of the frame. A bolt passes through the L-shaped plate and the frame, with one end of the bolt being secured to the outside of the L-shaped plate and the other end fitted with a nut and secured to the inner side of the frame, thereby connecting the frame and the L-shaped plate. The nut is in planar contact with the inner side of the frame, and one end of the bolt is also in contact with the outer side of the L-shaped plate. The bolt here serves to connect the L-shaped plate and the frame and ensures that the frame can swing and rotate around the bolt on the inner side of the L-shaped plate.

[0011] Preferably, a rubber sheet is fixed to the bottom inner side of the L-shaped plate by bolts, and a groove for placing the rubber sheet is reserved on the outer side of the bottom end of the frame. The contact between the rubber sheet and the frame increases the damping of the connection between the L-shaped plate and the frame, thereby reducing the swing speed while ensuring the swing of the frame. A gap d is left between the top surface of the frame and the base. Therefore, when the bottom corner of the frame contacts the top surface of the base during the rotation of the frame, the swing of the frame will be restricted, thereby limiting the swing of the frame within a specified range.

[0012] Preferably, connecting plates are welded at the four corners of the top frame. The bottom end of the connecting plate is attached to and extends to the outer side of the frame. The connecting plate is also connected to the frame by bolts and nuts. When the frame swings, the frame will swing around the bolts that pass through the connecting plate. At this time, the top frame will only change in height and will not swing with the swing of the frame.

[0013] Preferably, a middle fixing frame is installed on the inner side of the frame, and a top fixing plate is installed on the top surface of the top frame. A placement groove is formed on the inner side of the base, and a horizontal pipe is installed in the placement groove. A vertical pipe is installed from the middle fixing frame to the top fixing plate, and the vertical pipe is connected to the horizontal pipe.

[0014] Preferably, the frame has symmetrical arc grooves at both ends, and the bolts on the L-shaped plate and the connecting plate are all connected through the arc grooves. The arc grooves can further limit the swing angle of the frame.

[0015] Preferably, reinforcing plates are fixed to both the inner and outer surfaces of the steel plates on both sides, and the reinforcing plates on the inner and outer surfaces are arranged in a cross pattern to strengthen the frame.

[0016] Preferably, an adjustment ring is provided inside the middle fixed frame, and both ends of the adjustment ring extend to the outside of the middle fixed frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Through the design of this invention, the casing support is changed from a fixed support to a movable support, allowing the support to swing back and forth radially. This design combines the vertical shaft, horizontal section, and casing into a Z-shaped structure, ensuring the balance of the overall structure and improving the shortcomings of the existing structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged view of region A in the middle;

[0021] Figure 3 This is a front view of the bottom of the frame of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention in a swinging state;

[0023] Figure 5 This is a top view showing the connection between the adjusting ring and the middle fixed frame of the present invention.

[0024] In the picture:

[0025] 100. Frame; 100a. Arc groove; 101. Reinforcing plate; 102. Top frame; 102a. Top fixing plate; 103. Middle fixing frame; 104. Connecting plate; 105. Rubber sheet; 106. Adjusting ring;

[0026] 200. Base; 201. L-shaped plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 5 The present invention provides a technical solution: a swing-type sleeve support, the sleeve support comprising:

[0029] The frame is 100mm long and consists of four L-shaped steel plates.

[0030] The top frame 102 is set on the top of the frame 100 and is sway-connected to the frame 100;

[0031] The base 200 is located at the bottom of the frame 100 and is sway-connected to the frame 100.

[0032] In this embodiment, preferably, a plurality of L-shaped plates 201 are fixed on the top surface of the base 200, and the L-shaped plates 201 are located on the outside of the frame 100. A bolt passes through the L-shaped plate 201 and the frame 100. One end of the bolt is locked to the outside of the L-shaped plate 201, and the other end is fitted with a nut and locked to the inner side of the frame 100, thereby realizing the connection between the frame 100 and the L-shaped plate 201. The nut is in a planar fit with the inner side of the frame 100, and one end of the bolt is also in a fit with the outer side of the L-shaped plate 201. The bolt here serves to connect the L-shaped plate 201 and the frame 100, and can ensure that the frame 100 can swing and rotate around the bolt on the inner side of the L-shaped plate 201.

[0033] In this embodiment, preferably, a rubber sheet 105 is also fixed to the bottom of the inner side of the L-shaped plate 201 by bolts. A groove for placing the rubber sheet 105 is reserved on the outer side of the bottom end of the frame 100. By having the rubber sheet 105 contact the frame 100, the damping of the connection between the L-shaped plate 201 and the frame 100 can be increased. While ensuring the swing of the frame 100, the swing speed is reduced. A gap d is left between the frame 100 and the top surface of the base 200. Therefore, when the bottom corner of the frame 100 contacts the top surface of the base 200 during the rotation of the frame 100, the swing of the frame 100 will be restricted, thereby restricting the swing of the frame 100 within a specified range.

[0034] In this embodiment, preferably, connecting plates 104 are welded at the four corners of the top frame 102. The bottom end of the connecting plate 104 is attached to and extends to the outer side of the frame 100. The connecting plate 104 and the frame 100 are also connected by bolts and nuts. When the frame 100 swings, the frame 100 will swing around the bolts that pass through the connecting plate 104. At this time, the top frame 102 will only change in height and will not swing with the swing of the frame 100.

[0035] In this embodiment, preferably, a middle fixed frame 103 is installed on the inner side of the frame 100, and a top fixed plate 102a is installed on the top surface of the top frame 102. A placement groove is formed on the inner side of the base 200, and a horizontal pipe is installed in the placement groove. A vertical pipe is installed from the middle fixed frame 103 to the top fixed plate 102a. The vertical pipe is connected to the horizontal pipe. In practical applications, the deflection of the vertical shaft is absorbed by the angle compensation corrugated pipe of the top horizontal section. The angle compensation corrugated pipe in the horizontal direction absorbs the expansion and contraction of the vertical shaft section by deflection angle. The expansion and contraction of the horizontal section itself can be transmitted to the horizontal pipe. The horizontal pipe drives the entire frame 100 to swing to absorb the expansion and contraction of the corrugated pipe and avoid the instability of the angle compensation corrugated pipe.

[0036] In this embodiment, preferably, arc grooves 100a are symmetrically provided at both ends of the frame 100. The bolts on the L-shaped plate 201 and the connecting plate 104 are all connected through the arc grooves 100a. By setting the arc grooves 100a, the swing angle of the frame 100 can be further restricted.

[0037] In this embodiment, preferably, reinforcing plates 101 are fixed on both the inner and outer surfaces of the steel plates on both sides, and the reinforcing plates 101 on the inner and outer surfaces are arranged in a cross shape to strengthen the frame 100.

[0038] In this embodiment, preferably, an adjusting ring 106 is provided inside the middle fixing frame 103. Both ends of the adjusting ring 106 extend to the outside of the middle fixing frame 103. During the installation of vertical pipes, the ends of the adjusting ring 106 can be pulled outwards from the middle fixing frame 103 and fixed. The fixing method can be to use bolts to pass through the adjusting ring 106 and the frame 100, thereby achieving tight fit between the adjusting ring 106 and the pipe and increasing installation stability.

[0039] Although embodiments of the invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A swing-type sleeve support, characterized in that: The sleeve support includes: The frame (100) is composed of four L-shaped steel plates; The top frame (102) is set on the top of the frame (100) and is sway-connected to the frame (100); The base (200) is located at the bottom end of the frame (100) and is sway-connected to the frame (100); The top surface of the base (200) is fixed with a plurality of L-shaped plates (201), which are located on the outside of the frame (100); a bolt passes through the L-shaped plate (201) and the frame (100), one end of the bolt is locked to the outside of the L-shaped plate (201), and the other end is fitted with a nut and locked to the inner side of the frame (100), wherein the nut is in a planar fit with the inner side of the frame (100), and one end of the bolt is also in a fit with the outer side of the L-shaped plate (201); The bottom of the inner side of the L-shaped plate (201) is also fixed with a rubber sheet (105) by bolts. The bottom outer side of the frame (100) is reserved with a groove for placing the rubber sheet (105). A gap d is left between the top surface of the frame (100) and the top surface of the base (200). A middle fixing frame (103) is installed on the inner side of the frame (100), and a top fixing plate (102a) is installed on the top surface of the top frame (102). A placement groove is formed on the inner side of the base (200), and a horizontal pipe is installed in the placement groove. A vertical pipe is installed from the middle fixing frame (103) to the top fixing plate (102a), and the vertical pipe is connected to the horizontal pipe.

2. The swing-type sleeve support according to claim 1, characterized in that: Connecting plates (104) are welded at the four corners of the top frame (102). The bottom end of the connecting plate (104) is attached to and extends to the outer side of the frame (100). The connecting plate (104) and the frame (100) are also connected by bolts and nuts.

3. The swing-type sleeve support according to claim 1, characterized in that: The frame (100) has symmetrical arc grooves (100a) at both ends, and the bolts on the L-shaped plate (201) and the connecting plate (104) are all connected through the arc grooves (100a).

4. The swing-type sleeve support according to claim 3, characterized in that: Reinforcing plates (101) are fixed on both the inner and outer sides of the steel plates on both sides, and the reinforcing plates (101) on the inner and outer sides are arranged in a cross shape.

5. The swing-type sleeve support according to claim 1, characterized in that: An adjustment ring (106) is provided inside the middle fixed frame (103), and both ends of the adjustment ring (106) extend to the outside of the middle fixed frame (103).

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