Water turbine guide vane resetting tool and using method

Abstract

The invention discloses a water turbine guide vane reset tool and a using method, and belongs to the technical field of water turbines, the reset tool comprises a connecting plate, a screw rod, a pin bolt and a locking nut, the connecting plate is provided with a bolt hole, the pin bolt is sleeved with a gasket, the pin bolt penetrates through the bolt hole and is fixed to the connecting plate through the locking nut and the gasket, and the screw rod is connected with the pin bolt. The screw is vertically connected to the pin bolt, a first knuckle bearing, a first nut, a second knuckle bearing and a second nut are arranged on the screw, the screw is fixed to a guide vane arm of a guide vane through the first knuckle bearing, the first nut, the second knuckle bearing and the second nut, and the guide vane arm is located between the first knuckle bearing and the second knuckle bearing. And a scale is arranged on the connecting plate. The relative position between the guide vane arm and the connecting plate is adjusted by screwing and unscrewing the nuts on the two sides of the guide vane arm, and therefore the effect of accurately resetting the guide vane is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of water turbines, and in particular to a water turbine guide vane resetting tool and a use method thereof. Background Art

[0002] At present, the protection devices of the guide vane transmission mechanism of the turbine include the guide vane friction device and the spring link. For the unit using the friction device as the guide vane protection device, when the guide vane is blocked by foreign matter, it will cause the guide vane arm and the connecting plate to slip and misalign. After removing the foreign matter, the guide vane needs to be reset.

[0003] The traditional method of using a hoist to adjust the guide vane position is often unable to achieve fine-tuning, causing the guide vane to repeatedly wander around and adjust in the correct position, which is time-consuming and labor-intensive, and the results are not ideal. The adjusted guide vane is often in the wrong placement angle position, causing the guide vane's rotation angle to be inconsistent with the other guide vanes.

[0004] A Chinese patent document with publication number CN214870233U and publication date November 26, 2021 discloses a tool for removing and installing a movable guide vane pin shaft of a water turbine, characterized in that: the tool for removing and installing a movable guide vane pin shaft of a water turbine comprises a cylindrical column, a support plate, a bearing seat, an adjusting nut, an adjusting screw, and a rolling bearing; a support plate is installed on the top of the cylindrical column, a mounting hole is opened in the middle of the support plate, the bearing seat is installed on the support plate, and a rolling bearing is installed inside, which is concentric with the mounting hole, an adjusting nut is installed on the adjusting screw, and the adjusting screw is installed on the support plate through the rolling bearing and the mounting hole, and the adjusting nut is above the rolling bearing.

[0005] The tool disclosed in the patent document for removing and installing the movable guide vane pin shaft of a turbine adopts the combination of adjusting nut and adjusting screw thread, and can adjust the adjusting screw to move vertically, drive the guide vane pin to move vertically, so as to achieve the purpose of removing and installing the guide vane pin. It has a reasonable structure, simple manufacture, flexible and easy to use, good use effect, and greatly improves the efficiency of installing and removing the guide vane pin. However, it is not suitable for resetting the guide vane, and it is difficult to achieve the effect of accurately resetting the guide vane. Summary of the invention

[0006] In order to overcome the defects of the above-mentioned prior art, the present invention provides a turbine guide vane resetting tool and a method of use. The present invention adjusts the relative position between the guide vane arm and the connecting plate by tightening and loosening the nuts on both sides of the guide vane arm, thereby achieving the effect of precise resetting of the guide vane.

[0007] The present invention is achieved through the following technical solutions: A turbine guide vane resetting tool, characterized in that it includes a connecting plate, a screw rod, a pin bolt and a locking nut, wherein a bolt hole is opened on the connecting plate, a washer is sleeved on the pin bolt, the pin bolt passes through the bolt hole and is fixed to the connecting plate through the locking nut and the washer, the screw rod is vertically connected to the pin bolt, a first joint bearing, a first nut, a second joint bearing and a second nut are arranged on the screw rod, the screw rod is fixed to the guide vane arm of the guide vane through the first joint bearing, the first nut, the second joint bearing and the second nut, the guide vane arm is located between the first joint bearing and the second joint bearing, and a ruler is arranged on the connecting plate.

[0008] A screw hole for connecting a screw rod is formed at the lower part of the pin bolt.

[0009] The pin bolt is provided with a first clamping plate and a second clamping plate, wherein the first clamping plate is located on one side of the pin bolt, and the second clamping plate is located on the other side of the pin bolt.

[0010] The first clamping plate is provided with a first central hole, and the diameter of the first central hole is matched with the diameter of the screw.

[0011] The second clamping plate is provided with a second center hole, and the diameter of the second center hole matches the diameter of the screw.

[0012] The pin bolt is clamped on the screw rod by a first clamping plate and a second clamping plate.

[0013] There are two first nuts, which are overlapped and arranged on the screw rod.

[0014] There are two second nuts, which are overlapped and arranged on the screw rod.

[0015] The first nut is away from one side of the connecting plate, and the second nut is close to one side of the connecting plate.

[0016] A method for using a turbine guide vane resetting tool, characterized in that it comprises the following steps: a. Pull the guide vane to the target position through the hoist. If the guide vane arm of the guide vane is in the closing direction, loosen the second nut and the second joint bearing on the side close to the connecting plate; if the guide vane arm is in the opening direction, loosen the first nut and the first joint bearing on the side away from the connecting plate; b. Install the pin bolt, lock nut and washer onto the connecting plate, pass the screw rod through the screw rod hole at the bottom of the pin bolt, and clamp the pin bolt by the first clamping plate and the second clamping plate; c. If the guide vane arm is in the closing direction, tighten the first nut on the side away from the connecting plate. If the guide vane arm is in the opening direction, tighten the second nut on the side close to the connecting plate to make the guide vane arm close to the target position. When the ruler is inserted into the guide vane arm, the guide vane is reset.

[0017] The beneficial effects of the present invention are mainly manifested in the following aspects: 1. According to the present invention, a bolt hole is formed on the connecting plate, a washer is sleeved on the pin bolt, the pin bolt passes through the bolt hole and is fixed to the connecting plate through a locking nut and a washer, a screw rod is vertically connected to the pin bolt, a first joint bearing, a first nut, a second joint bearing and a second nut are arranged on the screw rod, the screw rod is fixed to the guide vane arm of the guide vane through the first joint bearing, the first nut, the second joint bearing and the second nut, the guide vane arm is located between the first joint bearing and the second joint bearing, a ruler is arranged on the connecting plate, compared with the prior art, the relative position between the guide vane arm and the connecting plate is adjusted by tightening and loosening the nuts on both sides of the guide vane arm, thereby achieving the effect of accurate resetting of the guide vane.

[0018] 2. The present invention can achieve fine adjustment of the guide vane placement angle by simply adjusting the first nut or the second nut, thereby solving the problem that the traditional hoist adjustment cannot achieve fine adjustment.

[0019] 3. The reset tool of the present invention is easy to use, saves time and effort in operation, and can avoid the disadvantages caused by inconsistent guide vane placement angles through the reset tool, thereby improving product quality.

[0020] 4. The overall structure of the reset tool of the present invention is simple, which can effectively reduce the manufacturing cost.

[0021] 5. The present invention uses a hoist to pull the guide vane to a position close to the target position. If the guide vane arm of the guide vane is in the closing direction, the second nut and the second joint bearing close to the connecting plate are loosened; if the guide vane arm is in the opening direction, the first nut and the first joint bearing away from the connecting plate are loosened; the pin bolt, the locking nut and the washer are installed on the connecting plate, the screw rod is passed through the screw rod hole at the lower part of the pin bolt, and the pin bolt is clamped by the first clamping plate and the second clamping plate; if the guide vane arm is in the closing direction, the first nut away from the connecting plate is tightened, and if the guide vane arm is in the opening direction, the second nut close to the connecting plate is tightened to make the guide vane arm close to the target position. When the ruler is inserted into the guide vane arm, the guide vane is reset. Compared with the prior art, the entire guide vane reset process is simple to operate and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementations, wherein: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the guide vane resetting of the present invention; Markings in the figure: 1, connecting plate, 2, screw, 3, pin bolt, 4, locking nut, 5, washer, 6, first joint bearing, 7, first nut, 8, second joint bearing, 9, second nut, 10, guide vane arm, 11, ruler, 12, first clamping plate, 13, second clamping plate. DETAILED DESCRIPTION

[0023] Example 1 See also Figure 1 and Figure 2 A turbine guide vane resetting tool comprises a connecting plate 1, a screw rod 2, a pin bolt 3 and a locking nut 4, wherein a bolt hole is opened on the connecting plate 1, a washer 5 is sleeved on the pin bolt 3, the pin bolt 3 passes through the bolt hole and is fixed to the connecting plate 1 through the locking nut 4 and the washer 5, the screw rod 2 is vertically connected to the pin bolt 3, a first joint bearing 6, a first nut 7, a second joint bearing 8 and a second nut 9 are arranged on the screw rod 2, the screw rod 2 is fixed to the guide vane arm 10 of the guide vane through the first joint bearing 6, the first nut 7, the second joint bearing 8 and the second nut 9, the guide vane arm 10 is located between the first joint bearing 6 and the second joint bearing 8, and a scale 11 is arranged on the connecting plate 1.

[0024] This embodiment is the most basic implementation method. A bolt hole is opened on the connecting plate 1. A washer 5 is sleeved on the pin bolt 3. The pin bolt 3 passes through the bolt hole and is fixed to the connecting plate 1 through a locking nut 4 and a washer 5. The screw rod 2 is vertically connected to the pin bolt 3. A first joint bearing 6, a first nut 7, a second joint bearing 8 and a second nut 9 are provided on the screw rod 2. The screw rod 2 is fixed to the guide vane arm 10 of the guide vane through the first joint bearing 6, the first nut 7, the second joint bearing 8 and the second nut 9. The guide vane arm 10 is located between the first joint bearing 6 and the second joint bearing 8. A scale 11 is provided on the connecting plate 1. Compared with the prior art, the relative position between the guide vane arm 10 and the connecting plate 1 is adjusted by tightening and loosening the nuts on both sides of the guide vane arm 10, thereby achieving the effect of precise resetting of the guide vane.

[0025] Example 2 See also Figure 1 and Figure 2A turbine guide vane resetting tool comprises a connecting plate 1, a screw rod 2, a pin bolt 3 and a locking nut 4, wherein a bolt hole is opened on the connecting plate 1, a washer 5 is sleeved on the pin bolt 3, the pin bolt 3 passes through the bolt hole and is fixed to the connecting plate 1 through the locking nut 4 and the washer 5, the screw rod 2 is vertically connected to the pin bolt 3, a first joint bearing 6, a first nut 7, a second joint bearing 8 and a second nut 9 are arranged on the screw rod 2, the screw rod 2 is fixed to the guide vane arm 10 of the guide vane through the first joint bearing 6, the first nut 7, the second joint bearing 8 and the second nut 9, the guide vane arm 10 is located between the first joint bearing 6 and the second joint bearing 8, and a scale 11 is arranged on the connecting plate 1.

[0026] Preferably, a screw hole for connecting the screw rod 2 is opened at the lower part of the pin bolt 3 .

[0027] The pin bolt 3 is provided with a first clamping plate 12 and a second clamping plate 13 . The first clamping plate 12 is located on one side of the pin bolt 3 , and the second clamping plate 13 is located on the other side of the pin bolt 3 .

[0028] This embodiment is a preferred implementation mode. By simply adjusting the first nut 7 or the second nut 9, the guide vane placement angle can be finely adjusted, which solves the problem that the traditional hoist adjustment cannot be finely adjusted.

[0029] Example 3 See also Figure 1 and Figure 2 A turbine guide vane resetting tool comprises a connecting plate 1, a screw rod 2, a pin bolt 3 and a locking nut 4, wherein a bolt hole is opened on the connecting plate 1, a washer 5 is sleeved on the pin bolt 3, the pin bolt 3 passes through the bolt hole and is fixed to the connecting plate 1 through the locking nut 4 and the washer 5, the screw rod 2 is vertically connected to the pin bolt 3, a first joint bearing 6, a first nut 7, a second joint bearing 8 and a second nut 9 are arranged on the screw rod 2, the screw rod 2 is fixed to the guide vane arm 10 of the guide vane through the first joint bearing 6, the first nut 7, the second joint bearing 8 and the second nut 9, the guide vane arm 10 is located between the first joint bearing 6 and the second joint bearing 8, and a scale 11 is arranged on the connecting plate 1.

[0030] A screw hole for connecting the screw rod 2 is formed at the lower part of the pin bolt 3 .

[0031] The pin bolt 3 is provided with a first clamping plate 12 and a second clamping plate 13 . The first clamping plate 12 is located on one side of the pin bolt 3 , and the second clamping plate 13 is located on the other side of the pin bolt 3 .

[0032] The first clamping plate 12 is provided with a first central hole, and the diameter of the first central hole matches the diameter of the screw rod 2 .

[0033] The second clamping plate 13 is provided with a second central hole, and the diameter of the second central hole matches the diameter of the screw rod 2 .

[0034] This embodiment is another preferred implementation method. The reset tool is easy to use and saves time and effort to operate. The reset tool can avoid the disadvantages caused by inconsistent guide vane placement angles, thereby improving product quality.

[0035] Example 4 See also Figure 1 and Figure 2 A turbine guide vane resetting tool comprises a connecting plate 1, a screw rod 2, a pin bolt 3 and a locking nut 4, wherein a bolt hole is opened on the connecting plate 1, a washer 5 is sleeved on the pin bolt 3, the pin bolt 3 passes through the bolt hole and is fixed to the connecting plate 1 through the locking nut 4 and the washer 5, the screw rod 2 is vertically connected to the pin bolt 3, a first joint bearing 6, a first nut 7, a second joint bearing 8 and a second nut 9 are arranged on the screw rod 2, the screw rod 2 is fixed to the guide vane arm 10 of the guide vane through the first joint bearing 6, the first nut 7, the second joint bearing 8 and the second nut 9, the guide vane arm 10 is located between the first joint bearing 6 and the second joint bearing 8, and a scale 11 is arranged on the connecting plate 1.

[0036] A screw hole for connecting the screw rod 2 is formed at the lower part of the pin bolt 3 .

[0037] The pin bolt 3 is provided with a first clamping plate 12 and a second clamping plate 13 . The first clamping plate 12 is located on one side of the pin bolt 3 , and the second clamping plate 13 is located on the other side of the pin bolt 3 .

[0038] Further preferably, a first center hole is formed on the first clamping plate 12 , and the diameter of the first center hole matches the diameter of the screw rod 2 .

[0039] The second clamping plate 13 is provided with a second central hole, and the diameter of the second central hole matches the diameter of the screw rod 2 .

[0040] The pin bolt 3 is clamped on the threaded rod 2 by a first clamping plate 12 and a second clamping plate 13 .

[0041] There are two first nuts 7 , and the two first nuts 7 are overlapped and arranged on the screw rod 2 .

[0042] There are two second nuts 9 , which are overlapped and arranged on the screw rod 2 .

[0043] The first nut 7 is away from one side of the connecting plate 1 , and the second nut 9 is close to one side of the connecting plate 1 .

[0044] This embodiment is another preferred implementation mode. The overall structure of the resetting tool is simple and can effectively reduce the manufacturing cost.

[0045] Example 5 See also Figure 1 and Figure 2 , a method for using a turbine guide vane resetting tool, comprising the following steps: a. Pull the guide vane to a position close to the target position by means of a hoist. If the guide vane arm 10 of the guide vane is in the closing direction, loosen the second nut 9 and the second joint bearing 8 on the side close to the connecting plate 1; if the guide vane arm 10 is in the opening direction, loosen the first nut 7 and the first joint bearing 6 on the side away from the connecting plate 1; b. Install the pin bolt 3, the lock nut 4 and the washer 5 onto the connecting plate 1, so that the screw rod 2 passes through the screw rod hole at the lower part of the pin bolt 3, and clamp the pin bolt 3 by the first clamping plate 12 and the second clamping plate 13; c. If the guide vane arm 10 is in the closing direction, tighten the first nut 7 on the side away from the connecting plate 1. If the guide vane arm 10 is in the opening direction, tighten the second nut 9 on the side close to the connecting plate 1 to make the guide vane arm 10 close to the target position. When the ruler 11 is inserted into the guide vane arm 10, the guide vane is reset.

[0046] This embodiment is the best implementation method. The guide vane is pulled to a position close to the target position by a hoist. If the guide vane arm 10 of the guide vane is in the closing direction, the second nut 9 and the second joint bearing 8 close to the side of the connecting plate 1 are loosened; if the guide vane arm 10 is in the opening direction, the first nut 7 and the first joint bearing 6 away from the side of the connecting plate 1 are loosened; the pin bolt 3, the locking nut 4 and the washer 5 are installed on the connecting plate 1, so that the screw 2 is passed through the screw hole at the lower part of the pin bolt 3, and the pin bolt 3 is clamped by the first clamping plate 12 and the second clamping plate 13; if the guide vane arm 10 is in the closing direction, the first nut 7 away from the side of the connecting plate 1 is tightened, and if the guide vane arm 10 is in the opening direction, the second nut 9 close to the side of the connecting plate 1 is tightened to make the guide vane arm 10 close to the target position. When the ruler 11 is inserted into the guide vane arm 10, the guide vane is reset. Compared with the prior art, the entire guide vane reset process is simple to operate and has good applicability.

[0047] The basic principles of the present invention are as follows: The pin bolt 3 is clamped on the screw rod 2 by using the first clamping plate 12 and the second clamping plate 13. The screw rod 2 is fixed on the guide vane arm 10 of the guide vane through the first spherical bearing 6, the first nut 7, the second spherical bearing 8 and the second nut 9. The guide vane arm 10 and the connecting plate 1 are connected by using the screw rod 2. The angle between the guide vane arm 10 and the connecting plate 1 is fine-tuned by using the first nut 7 and the second nut 9 on the screw 2, so that the guide vane arm 10 is continuously approached to the target position. The reset result is judged by using the ruler 11. When the ruler 11 is inserted into the small holes of the connecting plate 1 and the guide vane arm 10, the guide vane is reset successfully.

Claims

1. A turbine guide vane resetting tool, characterized in that: The invention comprises a connecting plate (1), a screw rod (2), a pin bolt (3) and a locking nut (4); the connecting plate (1) is provided with a bolt hole; the pin bolt (3) is sleeved with a washer (5); the pin bolt (3) passes through the bolt hole and is fixed to the connecting plate (1) through the locking nut (4) and the washer (5); the screw rod (2) is vertically connected to the pin bolt (3); a first joint bearing (6), a first nut (7), a second joint bearing (8) and a second nut (9) are provided on the screw rod (2); the screw rod (2) is fixed to a guide vane arm (10) of the guide vane through the first joint bearing (6), the first nut (7), the second joint bearing (8) and the second nut (9); the guide vane arm (10) is located between the first joint bearing (6) and the second joint bearing (8); and a scale (11) is provided on the connecting plate (1).

2. A turbine guide vane resetting tool according to claim 1, characterized in that: A screw hole for connecting the screw rod (2) is formed at the lower part of the pin bolt (3).

3. A turbine guide vane resetting tool according to claim 1, characterized in that: The pin bolt (3) is provided with a first clamping plate (12) and a second clamping plate (13), wherein the first clamping plate (12) is located on one side of the pin bolt (3), and the second clamping plate (13) is located on the other side of the pin bolt (3).

4. A turbine guide vane resetting tool according to claim 3, characterized in that: The first clamping plate (12) is provided with a first central hole, and the diameter of the first central hole is adapted to the diameter of the screw rod (2).

5. A turbine guide vane resetting tool according to claim 3, characterized in that: The second clamping plate (13) is provided with a second central hole, and the diameter of the second central hole is matched to the diameter of the screw rod (2).

6. A turbine guide vane resetting tool according to claim 3, characterized in that: The pin bolt (3) is clamped on the screw rod (2) by means of a first clamping plate (12) and a second clamping plate (13).

7. A turbine guide vane resetting tool according to claim 1, characterized in that: There are two first nuts (7), and the two first nuts (7) are arranged overlappingly on the screw rod (2).

8. A turbine guide vane resetting tool according to claim 1, characterized in that: There are two second nuts (9), and the two second nuts (9) are arranged overlappingly on the screw rod (2).

9. A turbine guide vane resetting tool according to claim 1, characterized in that: The first nut (7) is located away from one side of the connecting plate (1), and the second nut (9) is located close to one side of the connecting plate (1).

10. A method for using a turbine guide vane resetting tool, characterized in that: The following steps are involved: a. Pull the guide vane to a position close to the target position by means of a hoist. If the guide vane arm (10) of the guide vane is in the closing direction, loosen the second nut (9) and the second joint bearing (8) on the side close to the connecting plate (1); if the guide vane arm (10) is in the opening direction, loosen the first nut (7) and the first joint bearing (6) on the side away from the connecting plate (1); b. Install the pin bolt (3), the lock nut (4) and the washer (5) onto the connecting plate (1), insert the screw rod (2) into the screw rod hole at the bottom of the pin bolt (3), and clamp the pin bolt (3) by means of the first clamping plate (12) and the second clamping plate (13); c. If the guide vane arm (10) is in the closing direction, tighten the first nut (7) on the side away from the connecting plate (1); if the guide vane arm (10) is in the opening direction, tighten the second nut (9) on the side close to the connecting plate (1) to bring the guide vane arm (10) close to the target position. When the scale (11) is inserted into the guide vane arm (10), the guide vane is reset.

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