Guide vane drawing tool for tubular unit

Abstract

The utility model discloses a guide vane drawing tool for a through-flow unit, and relates to the technical field of through-flow units. The guide vane drawing tool for the through-flow unit comprises a supporting plate, a guide pull rod connected to the center position of the supporting plate in a sliding mode, a plurality of supporting legs fixed to the bottom of the supporting plate and evenly distributed around the guide pull rod in an array mode, and adjusting screws connected to the supporting legs in a threaded mode and perpendicularly intersect with the supporting legs. The adjusting screws all face the guide pull rod. The center of the supporting plate is rotationally connected with a shaft sleeve, internal threads are arranged in the shaft sleeve, external threads matched with the internal threads are arranged on the outer side of the guide pull rod, and the guide pull rod is in threaded connection in the shaft sleeve. In the guide vane drawing process, the position of the guide pull rod can be adjusted to ensure that the guide pull rod is always in the center position. The design ensures that the guide vane can be smoothly and stably drawn out of the unit.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular units, in particular to a guide vane extraction tool for tubular units. Background Art

[0002] The design and adjustment of guide vanes are important aspects of optimizing the performance of tubular hydroelectric generator sets. During operation, the guide vanes can control the speed and flow of water entering the turbine by adjusting their position, thereby achieving precise control of the unit's output power. The adjustment of guide vanes is usually completed by mechanical or hydraulic systems. The mechanical system usually includes components such as gears, connecting rods, and adjustment rods, and the guide vane position is adjusted manually or automatically. The hydraulic system uses hydraulic cylinders and hydraulic control units to achieve precise adjustment of the guide vanes, which can achieve faster and more precise adjustment. The adjustment of guide vanes is closely related to the load regulation of the turbine. When the load demand increases, the guide vanes will open to increase the speed and flow of water entering the turbine, thereby increasing the output power; conversely, when the load demand decreases, the guide vanes will close to reduce the speed and flow of water entering the turbine to maintain the proper operating state. In addition to load regulation, guide vanes can also be used to regulate the start-up process of the turbine. At startup, the guide vanes are adjusted to a more open position to ensure that enough water flows into the turbine to reach the speed required for normal operation.

[0003] At present, in the process of withdrawing the guide vanes of a cross-flow unit, the guide pull rod often deviates from the center position, resulting in the phenomenon of getting stuck or holding the force during the process of withdrawing the guide vanes. For example, in the invention patent with patent number CN202310720756.2, the movable guide vanes of the anti-collision hydropower unit are recorded, including a blade mechanism, including a guide vane assembly, a shaft rod inserted at the axis of both ends of the guide vane assembly, and a plug-in assembly for connecting the shaft rod and the guide vane assembly, wherein the guide vane assembly includes blades, and connecting holes are opened on both sides of the blades and corresponding to the position of the shaft rod. In the structure of comparative document 1, there is no special guide vane withdrawal device, and relying on manual withdrawal of the guide vanes will cause the phenomenon of getting stuck or holding the force. Utility Model Content

[0004] The utility model aims to provide a guide vane extraction tool for a tubular unit, which can solve the problem of getting stuck or being stuck in the process of extracting the guide vanes.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a guide vane extraction tool for a cross-flow unit, comprising: a support plate, a guide rod slidably connected to the center position of the support plate, a plurality of support legs fixed to the bottom of the support plate and evenly distributed in an array around the guide rod, and adjustment screws threadedly connected to the support legs and perpendicularly intersecting the support legs, wherein the adjustment screws are all facing the guide rod.

[0006] Preferably, the support plate is centrally rotatably connected with a shaft sleeve, the interior of the shaft sleeve is provided with an internal thread, the exterior of the guide rod is provided with an external thread matching the internal thread, and the guide rod is threadedly connected in the shaft sleeve.

[0007] Preferably, a handle cap is provided on the top of the sleeve and is located on the top of the support plate, and the cross-section of the sleeve is T-shaped.

[0008] Preferably, the supporting leg is L-shaped, and is provided with a fixing hole for fixedly mounting on the unit.

[0009] Preferably, the adjustment screws on all the support legs are in the same horizontal plane.

[0010] Preferably, the number of the supporting legs is three to six.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The guide vane extraction tool of the crossflow unit can effectively avoid the occurrence of jamming or stagnation during the guide vane extraction process. By turning the adjustment screw, the offset guide rod can be returned to the correct position, thereby indirectly adjusting the guide vane shaft and the position of the guide vane to ensure smooth extraction of the guide vane. The design of this mechanism makes the guide vane extraction process smoother and the operation more stable, greatly improving work efficiency and safety.

[0013] (2) The guide vane extraction tool of the crossflow unit can ensure that the guide rod is always in the center position during the guide vane extraction process. This design not only ensures that the guide vane can be extracted smoothly and stably, but also improves the operability of the tool and can effectively protect the components of the unit from accidental damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an axonometric drawing of the utility model;

[0015] Figure 2 It is an axonometric cross-sectional view of the utility model;

[0016] Figure 3 It is a schematic diagram of the cooperation between the adjusting screw and the guide vane sleeve in the utility model.

[0017] In the figure: support plate 1, guide rod 2, external thread 2a, support leg 3, fixing hole 3a, adjustment screw 4, shaft sleeve 5, internal thread 5a, handle cap 6. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a guide vane extraction tool for a cross-flow unit, comprising: a support plate 1, a guide rod 2 is slidably connected to the center of the support plate 1, and its function is to extract the guide vanes, and a plurality of support legs 3 are fixed to the bottom of the support plate 1, and these support legs are evenly distributed around the guide rod 2, playing the role of supporting and balancing the entire tool. An adjustment screw 4 is threadedly connected to each support leg 3, and these adjustment screws are perpendicular to the support legs, and these adjustment screws 4 are all facing the guide rod 2. This set of tools is exquisitely designed and reasonably structured, which not only improves the efficiency of maintenance work, but also ensures the safe and stable operation of the unit. Through this tool, the unit maintenance personnel can more conveniently perform the operation and maintenance of the guide vane extraction, providing a reliable guarantee for the long-term operation of the unit.

[0020] Furthermore, a shaft sleeve 5 is rotatably connected to the center of the support plate 1, an internal thread 5a is provided inside the shaft sleeve 5, an external thread 2a matching the internal thread 5a is provided outside the guide rod 2, the guide rod 2 is threadedly connected in the shaft sleeve 5, and a handle cap 6 located at the top of the support plate 1 is provided on the top of the shaft sleeve 5, and the cross-section of the shaft sleeve 5 is T-shaped.

[0021] Furthermore, the support leg 3 is L-shaped, and is provided with a fixing hole 3a for fixing on the unit. The adjustment screws 4 on all the support legs 3 are in the same horizontal plane, and the number of the support legs 3 is three to six.

[0022] Working principle: First install the device around the guide vane sleeve on the unit, then fix the device as a whole on the unit casing through the support legs 3, then connect the guide rod 2 with the guide vane shaft inside the guide vane sleeve, specifically by threading or bolting, then turn the adjustment screw 4 to make it against the outside of the guide vane sleeve, for details, please refer to Figure 3 , and then rotate the shaft sleeve 5 to drive the guide pull rod 2 to move upward to extract the guide vane. If the guide pull rod 2 deviates during the process of extracting the guide vane, then adjust the overall position of the device by turning the adjusting screw 4, and drive the guide pull rod 2 to return to the center through the overall movement of the device, so that the guide vane can be smoothly extracted, avoiding the phenomenon of sticking or holding in the process of extracting the guide vane.

[0023] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A guide vane extraction tool for a tubular unit, characterized in that: include: A support plate (1), a guide rod (2) slidably connected to the center of the support plate (1), a plurality of support legs (3) fixed to the bottom of the support plate (1) and evenly distributed in an array around the guide rod (2), and adjustment screws (4) threadedly connected to the support legs (3) and perpendicularly intersecting the support legs (3), wherein the adjustment screws (4) are all facing the guide rod (2).

2. The guide vane extraction tool for a tubular unit according to claim 1, characterized in that: The support plate (1) is centrally rotatably connected to a shaft sleeve (5), the shaft sleeve (5) is provided with an internal thread (5a) and the guide rod (2) is provided with an external thread (2a) matching the internal thread (5a) on its outer side, and the guide rod (2) is threadedly connected to the shaft sleeve (5).

3. The guide vane extraction tool for a tubular unit according to claim 2, characterized in that: The top of the shaft sleeve (5) is provided with a handle cap (6) located on the top of the support plate (1); the cross section of the shaft sleeve (5) is T-shaped.

4. The guide vane extraction tool for a tubular unit according to claim 3, characterized in that: The support leg (3) is L-shaped and is provided with a fixing hole (3a) for fixing on the unit.

5. The guide vane extraction tool for a tubular unit according to claim 4, characterized in that: The adjustment screws (4) on all the supporting legs (3) are in the same horizontal plane.

6. The guide vane extraction tool for a tubular unit according to claim 5, characterized in that: The number of the supporting legs (3) is three to six.

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