Stable and adjustable speed regulator segmented closing stroke valve switching support suitable for hydroelectric generating set

Abstract

A stable and adjustable speed regulator segmented closing stroke valve switching support suitable for a hydroelectric generating set comprises a guide rail, a sliding block, a support body and a toothed plate. The sliding block is in sliding fit with the guide rail. The toothed plate is located in the guide rail. The support is horizontally and movably connected with one side of the sliding block. Teeth on the sliding block are meshed with teeth on the toothed plate; the sliding block is limited by the toothed plate and the stop pin when sliding to a set position; the sliding block slides along the guide rail, when the sliding block reaches a set point position, the stop pin penetrates through the toothed plate and the guide rail to be locked and limited, then the horizontal distance between the support and the sliding block is adjusted through the connecting piece between the support and the sliding block, flexible adjustment of the switching support of the segmented closing stroke valve is achieved, stability is good, and positioning is accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary parts of hydropower station units, and relates to a switching bracket for a speed governor segmented closing stroke valve which is stable and adjustable for a hydropower unit. Background Art

[0002] The governor segment closing stroke valve switching bracket is located below the relay. Its function is to switch the segment closing stroke valve to control the segment closing main valve on the main operating oil pipeline when the unit is shut down urgently, and to throttle the return oil of the relay to achieve the segment closing of the unit. It is an important component that directly affects the accuracy of the segment closing inflection point of the unit.

[0003] The existing switching bracket uses steel plates, angle irons, etc. as the main structure, uses kidney holes as the adjustment structure, and is fastened by bolts, which is not convenient for flexible adjustment of the segmented closing stroke valve. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a stable and adjustable governor segmented closing stroke valve switching bracket suitable for a hydropower unit, so as to realize flexible adjustment of the segmented closing stroke valve switching bracket, have good stability and precise positioning.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units, which includes a guide rail, a slider, a bracket and a tooth plate; the slider slides with the guide rail; the bracket is horizontally movably connected to one side of the slider; the teeth on the slider and the tooth plate are meshed with each other; when the slider slides to the set position, it is locked and limited by the tooth plate and the stop pin.

[0006] The guide rail is a double-groove guide rail, and the slider is slidably matched with one of the groove bodies of the double-groove guide rail; the tooth plate is located in the other groove body of the double-groove guide rail, and the groove body is provided with through holes arranged in a module along the axial direction.

[0007] The sliding block is an inverted U-shaped groove structure, and a rack is arranged on one side of the outer wall of the groove body to mesh with a toothed plate.

[0008] The bracket is a horizontal frame plate connected by two horizontal rods and two oblique rods.

[0009] A connecting piece is arranged at one end of the bracket, one end of a screw of the connecting piece is fixedly connected to the slider, and an adjusting nut and a locking nut arranged at both ends of the screw are connected to the bracket.

[0010] The tooth plate is a slat, the teeth on one side of the slat mesh with the rack on the side of the slider, and the other side of the slat contacts the inner side of the guide rail; the tooth plate is provided with limit holes arranged in a module along the axial direction, and the stop pin passes through the limit hole.

[0011] A cotter pin is arranged at the end of the stop pin.

[0012] The main beneficial effects of the utility model are:

[0013] The slider slides along the guide rail. When it reaches the set point, the tooth plate is placed in the double-layer guide rail to engage with the slider. The stop pin passes through the tooth plate and the guide rail to lock the limit. Then the horizontal distance between the bracket and the slider is adjusted through the connecting piece between the bracket and the slider to achieve flexible adjustment.

[0014] The slide block slides along one of the grooves of the double-groove guide rail, and when the slide block slides, the bracket is driven to move synchronously.

[0015] The bracket is composed of a horizontal frame plate connected by two horizontal rods and two oblique rods, and has high structural strength and good stability.

[0016] Rotate the adjusting nut and locking nut to adjust the horizontal distance between the bracket and the slider.

[0017] Since one side of the tooth plate contacts the inner side of the guide rail, the teeth on the other side of the tooth plate mesh with the rack on the slider, limiting the radial movement of the tooth plate and the slider on the guide rail.

[0018] When the slider slides to the set position, the stop pin passes through the limit hole on the tooth plate and the through hole on the guide rail to limit the slider's axial movement along the guide rail. A split pin is set on the end of the stop pin after it passes through the guide rail to prevent the stop pin from exiting abnormally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] In the figure: guide rail 1; slider 2; bracket 3; adjustment nut 31; locking nut 32; tooth plate 4; stop pin 41. DETAILED DESCRIPTION

[0022] like Figure 1 In the invention, a stable and adjustable governor segmented closing stroke valve switching bracket for a hydropower unit is disclosed, which comprises a guide rail 1, a slider 2, a bracket 3 and a tooth plate 4; the slider 2 is slidably matched with the guide rail 1, and the tooth plate 4 is located in the guide rail 1; the bracket 3 is horizontally movably connected with one side of the slider 2; the teeth on the slider 2 and the tooth plate 4 are meshed with each other; when the slider 2 slides to the set position, it is locked by the tooth plate 4 and the stop pin 41. The slider 2 slides along the guide rail 1, and when it reaches the set point, the stop pin 41 passes through the tooth plate 4 and the guide rail 1 to lock the limit, and then the horizontal distance between the bracket 3 and the slider 2 is adjusted by the connecting piece between the bracket 3 and the slider 2, so as to realize flexible adjustment.

[0023] In a preferred embodiment, the guide rail 1 is a double-groove guide rail, the slider 2 is slidably matched with one of the grooves of the double-groove guide rail; the tooth plate 4 is located in the other groove of the double-groove guide rail, and the groove is provided with through holes arranged in a module along the axial direction. When in use, the slider 2 slides along one of the grooves of the double-groove guide rail, and the slider 2 slides to drive the bracket 3 to move synchronously.

[0024] In the preferred solution, the slider 2 is an inverted U-shaped groove structure, and a rack is arranged on one side of the outer wall of the groove body to mesh with the tooth plate 4. When in use, after the slider 2 is adjusted in position, the tooth plate 4 is placed in the double groove guide rail and meshed with the slider 2.

[0025] In a preferred solution, the bracket 3 is a horizontal frame plate connected by two horizontal rods and two oblique rods. When manufacturing, the bracket 3 composed of a horizontal frame plate connected by two horizontal rods and two oblique rods has high structural strength and good stability.

[0026] In a preferred solution, a connector is provided at one end of the bracket 3, one end of the screw of the connector is fixedly connected to the slider 2, and the adjusting nut 31 and the locking nut 32 provided at both ends of the screw are connected to the bracket 3. During manufacturing, the horizontal rod body of the bracket 3 is made of angle steel, a connecting plate is provided at one end, the screw passes through the connecting plate and is connected to the slider 2, and the adjusting nut 31 and the locking nut 32 are respectively located on both sides of the connecting plate.

[0027] Preferably, the horizontal distance between the bracket 3 and the slider 2 is adjusted by rotating the adjusting nut 31 and the locking nut 32 .

[0028] In a preferred embodiment, the tooth plate 4 is a strip, the teeth on one side of the strip mesh with the rack on the side of the slider 2, and the other side of the strip contacts the inner side of the guide rail 1; the tooth plate 4 is provided with limit holes arranged in a module along the axial direction, and the stop pin 41 passes through the limit holes. When in use, since one side of the tooth plate 4 contacts the inner side of the guide rail 1, the teeth on the other side of the tooth plate 4 mesh with the rack on the slider 2, the radial movement of the slider 2 on the guide rail 1 is limited.

[0029] In a preferred solution, a split pin is provided at the end of the stop pin 41. When in use, when the slider 2 slides to the set position, the stop pin 41 passes through the limit hole on the tooth plate 4 and the through hole on the guide rail 1 to limit the axial movement of the slider 2 along the guide rail 1. A split pin is provided at the end of the stop pin 41 after passing through the guide rail 1 to prevent the stop pin 41 from exiting abnormally.

[0030] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units, characterized by: It comprises a guide rail (1), a slider (2), a bracket (3) and a tooth plate (4); the slider (2) and the guide rail (1) are slidably matched; the bracket (3) is horizontally movably connected to one side of the slider (2); the teeth on the slider (2) and the tooth plate (4) are meshed with each other; when the slider (2) slides to a set position, it is locked and limited by the tooth plate (4) and the stop pin (41).

2. The stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units according to claim 1 is characterized by: The guide rail (1) is a double-groove guide rail, and the slider (2) is slidably matched with one of the groove bodies of the double-groove guide rail; the tooth plate (4) is located in the other groove body of the double-groove guide rail, and through holes arranged in a module are arranged in the axial direction of the groove body.

3. The stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units according to claim 1 is characterized by: The slide block (2) is an inverted U-shaped groove structure, and a rack is arranged on one side of the outer wall of the groove body to mesh with the toothed plate (4).

4. The stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units according to claim 1 is characterized by: The bracket (3) is a horizontal frame plate connected by two horizontal rods and two oblique rods.

5. The stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units according to claim 4 is characterized in that: A connecting piece is provided at one end of the bracket (3); one end of a screw of the connecting piece is fixedly connected to the slider (2); and an adjusting nut (31) and a locking nut (32) are provided at both ends of the screw to connect the bracket (3).

6. The stable and adjustable governor segmented closing stroke valve switching bracket suitable for hydropower units according to claim 1 is characterized by: The tooth plate (4) is a slat, the teeth on one side of the slat mesh with the rack on the side of the slider (2), and the other side of the slat contacts the inner side of the guide rail (1); the tooth plate (4) is provided with limit holes arranged in a module along the axial direction, and the stop pin (41) passes through the limit hole.

7. The stable and adjustable governor segmented closing stroke valve switching bracket suitable for a hydropower unit according to claim 6 is characterized by: A cotter pin is provided at the end of the stop pin (41).

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