Clearance measuring tool for speed measuring probe of fluted disc of water-turbine generator set

Abstract

The utility model relates to the technical field of water-turbine generator set fluted disc speed measurement, in particular to a water-turbine generator set fluted disc speed measurement probe gap measuring tool, which comprises a generator shell, a fluted disc arranged in the generator shell, and a speed measurement probe positioned in the generator shell and used for testing the rotating speed of the fluted disc, the speed measuring probe is located on the right side of the fluted disc, a detection rod is fixed to the right side surface of the speed measuring probe, a distance measuring instrument used for measuring the distance between the fluted disc and the speed measuring probe is arranged on the right side of the fluted disc, and a distance measuring rod is fixed to the right side surface of the distance measuring instrument. According to the utility model, the distance between the speed measuring probe and the fluted disc can be detected by arranging the detection rod, the speed measuring probe, the distance measuring rod and the distance measuring instrument, and the speed measuring probe and the distance measuring instrument can be moved by arranging the adjusting mechanism, so that the distance between the speed measuring probe and the fluted disc can be adjusted as required.

Description

Technical Field

[0001] The utility model relates to the technical field of gear disc speed measurement of a hydro-generator set, in particular to a gear disc speed measurement probe gap measurement tool for a hydro-generator set. Background Art

[0002] The unit speed signal is the most important electrical signal of a hydroelectric generator. The stability of the speed signal measurement is crucial to the safe operation of the unit. The gear speed measuring device is the main measurement method for the speed of a hydroelectric generator unit and is widely used in hydropower plants.

[0003] A sprocket speed probe is often used in the process of detecting the sprocket speed. When using the sprocket speed probe, a distance measuring tool is often required to measure the distance between the sprocket speed probe and the sprocket. However, most distance measuring tools on the market are fixedly installed and the sprocket speed probe cannot be moved. Therefore, the distance between the sprocket speed probe and the sprocket cannot be adjusted according to speed measurement needs. Utility Model Content

[0004] The purpose of the present utility model is to provide a gear disc speed probe gap measuring tool for a hydro-turbine generator set, so as to solve the problem raised in the above background technology that most distance measuring tools on the market are fixedly installed, the gear disc speed probe cannot be moved, and the distance between the gear disc speed probe and the gear disc cannot be adjusted according to the speed measurement needs.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A tool for measuring the clearance of a gear disc speed probe of a hydro-turbine generator set, comprising a generator housing, a gear disc mounted inside the generator housing, and a speed probe located inside the generator housing and used to test the rotational speed of the gear disc, wherein the speed probe is located on the right side of the gear disc, a detection rod is fixed to the right surface of the speed probe, a distance meter is provided on the right side of the gear disc for measuring the distance between the gear disc and the speed probe, and a distance measuring rod is fixed to the right surface of the distance meter, and further comprising:

[0007] The adjusting mechanism is arranged on the right inner wall of the generator housing, for adjusting the distance between the speed measuring probe and the gear disc, and the adjusting mechanism includes a vertical plate fixed on the right inner wall of the generator housing and in an L-shape, a roller rotatably connected to the end of the vertical plate of the vertical plate, a rotating column coaxially fixed on the right surface of the roller and rotatably connected to the right inner wall of the gear disc, a cylindrical cam coaxially fixed on the circumferential outer wall of the roller, a moving block slidably connected to the top surface of the horizontal plate end of the vertical plate, a moving rod fixed on the front surface of the moving block, two gears located inside the generator housing and used to drive the rotating column to rotate, a motor installed on the right inner wall of the generator housing and used to drive the two gears to rotate, the two gears meshing with each other, the circumferential outer wall of the cylindrical cam is provided with a spiral sliding groove, the top surface of the moving block is fixed with a sliding column slidably connected to the sliding groove on the outer wall of the cylindrical cam, and the detection rod and the ranging rod are both fixed on the left outer wall of the moving rod.

[0008] As a preferred embodiment, the adjustment mechanism further includes a rotating shaft coaxially connected to the motor output shaft, and the two gears are coaxially fixed on the rotating shaft and the circumferential outer wall of the rotating column respectively.

[0009] As a preferred embodiment, a guide groove is provided on the top surface of the vertical plate and the horizontal plate end, and a guide block is fixed on the bottom surface of the moving block and is slidably connected to the guide groove on the top surface of the vertical plate and the horizontal plate end.

[0010] As a preferred embodiment, the speed measuring probe corresponds to the position of the gear disc and is adapted to the size, the rangefinder corresponds to the position of the gear disc and is adapted to the size, and the left surface of the ranging end of the rangefinder and the right surface of the speed measuring probe are located on the same plane.

[0011] As a preferred embodiment, the vertical plate and the gear disc do not contact each other, and the gear disc and the generator housing do not contact each other.

[0012] As a preferred embodiment, the adjustment mechanism further includes a protection box fixed on the right inner wall of the generator housing, the motor is located inside the protection box, and the rotating shaft passes through the left outer wall of the protection box.

[0013] As a preferred embodiment, the longitudinal cross-sectional shape of the guide groove on the top surface of the vertical plate and the horizontal plate end is convex, and the shape of the guide block is convex to match the shape of the guide groove on the top surface of the vertical plate and the horizontal plate end.

[0014] As a preferred embodiment, the distance between the protection box and the rotating column is 2-7 cm, and the distance between the protection box and the gear on the same side is 3-8 cm.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model can detect the distance between the speed measuring probe and the gear disc by providing a detection rod, a speed measuring probe, a distance measuring rod and a distance meter, and can move the speed measuring probe and the distance meter by providing an adjustment mechanism, thereby adjusting the distance between the speed measuring probe and the gear disc as needed;

[0017] 2. The utility model provides a guide groove on the top surface of the vertical plate and the horizontal plate end, and a guide block is fixed on the bottom surface of the movable block and is slidably connected to the guide groove on the top surface of the vertical plate and the horizontal plate end, which can guide the movement of the movable block, thereby guiding the movement of the movable rod, and further guiding the movement of the speed measuring probe and the rangefinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0020] Figure 3 It is a partial exploded view of the present utility model;

[0021] Figure 4 Schematic diagram of the overall structure of the adjustment mechanism in the present utility model;

[0022] Figure 5 This is one of the partial exploded views of the adjustment mechanism in the present utility model;

[0023] Figure 6 This is the second partial exploded view of the adjustment mechanism in the present utility model.

[0024] The meaning of each number in the figure is:

[0025] 1. Generator housing; 2. Gear disc; 3. Detection rod; 4. Speed measuring probe; 5. Distance measuring rod; 6. Distance meter; 7. Adjustment mechanism; 71. Vertical plate; 72. Roller; 73. Rotating column; 74. Cylindrical cam; 75. Moving block; 76. Moving rod; 77. Sliding column; 78. Guide block; 79. Gear; 710. Motor; 711. Rotating shaft; 712. Protective box. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1-6 The utility model provides a technical solution: a gear disc speed probe gap measuring tool for a hydro-turbine generator set, comprising a generator housing 1, a gear disc 2 installed inside the generator housing 1, a speed probe 4 located inside the generator housing 1 and used to test the rotational speed of the gear disc 2, the speed probe 4 being located on the right side of the gear disc 2, a detection rod 3 being fixed to the right surface of the speed probe 4, a distance meter 6 being provided on the right side of the gear disc 2 for measuring the distance between the gear disc 2 and the speed probe 4, a distance measuring rod 5 being fixed to the right surface of the distance meter 6, and further comprising:

[0028] The adjusting mechanism 7 is arranged on the right inner wall of the generator housing 1 and is used to adjust the distance between the speed measuring probe 4 and the gear disc 2. The adjusting mechanism 7 includes an L-shaped vertical plate 71 fixed on the right inner wall of the generator housing 1, a roller 72 rotatably connected to the vertical plate end of the vertical plate 71, a rotating column 73 coaxially fixed to the right surface of the rotating roller 72 and rotatably connected to the right inner wall of the gear disc 2, a cylindrical cam 74 coaxially fixed to the circumferential outer wall of the rotating roller 72, a moving block 75 slidably connected to the top surface of the horizontal plate end of the vertical plate 71, a moving rod 76 fixed to the front surface of the moving block 75, two gears 79 located inside the generator housing 1 and used to drive the rotating column 73 to rotate, and a rotating column 73 installed on the generator housing 1. The motor 710 is on the right inner wall of the shell 1 and is used to drive the two gears 79 to rotate. The two gears 79 are meshed with each other. A spiral groove is provided on the circumferential outer wall of the cylindrical cam 74. A sliding column 77 is fixed on the top surface of the moving block 75, which is slidably connected to the groove on the outer wall of the cylindrical cam 74. The detection rod 3 and the distance measuring rod 5 are both fixed on the left outer wall of the moving rod 76. By arranging the detection rod 3, the speed measuring probe 4, the distance measuring rod 5 and the distance meter 6, the distance between the speed measuring probe 4 and the toothed disc 2 can be detected, and the speed measuring probe 4 and the distance meter 6 can be moved by setting the adjustment mechanism 7, and the distance between the speed measuring probe 4 and the toothed disc 2 can be adjusted as needed.

[0029] In this embodiment, the adjustment mechanism 7 also includes a rotating shaft 711 coaxially connected to the output shaft of the motor 710, and two gears 79 are coaxially fixed on the rotating shaft 711 and the circumferential outer wall of the rotating column 73, respectively, which can smoothly drive the two gears 79 to rotate, and then smoothly drive the cylindrical cam 74 to rotate.

[0030] In addition, a guide groove is provided on the top surface of the horizontal plate end of the vertical plate 71, and a guide block 78 is fixed on the bottom surface of the moving block 75, which is slidably connected to the guide groove on the top surface of the horizontal plate end of the vertical plate 71. It can guide the movement of the moving block 75, thereby guiding the movement of the moving rod 76, and further guiding the movement of the speed measuring probe 4 and the rangefinder 6.

[0031] Furthermore, the speed probe 4 corresponds to the position of the sprocket 2 and the size is adapted to it, the rangefinder 6 corresponds to the position of the sprocket 2 and the size is adapted to it, and the left surface of the measuring end of the rangefinder 6 and the right surface of the speed probe 4 are located on the same plane, so the distance between the speed probe 4 and the sprocket 2 can be smoothly detected.

[0032] Specifically, the vertical plate 71 and the gear disc 2 do not contact each other, and the gear disc 2 and the generator housing 1 do not contact each other, so that the gear disc 2 can operate normally.

[0033] It is worth noting that the adjustment mechanism 7 also includes a protective box 712 fixed on the right inner wall of the generator housing 1. The motor 710 is located inside the protective box 712, and the rotating shaft 711 passes through the left outer wall of the protective box 712, which can protect the motor 710 and thus extend the service life of the motor 710.

[0034] It is worth noting that the longitudinal cross-sectional shape of the guide groove on the top surface of the horizontal plate end of the vertical plate 71 is convex, and the shape of the guide block 78 is convex to match the shape of the guide groove on the top surface of the horizontal plate end of the vertical plate 71, which can make the connection between the guide block 78 and the guide groove on the top surface of the horizontal plate end of the vertical plate 71 tighter, and indirectly make the speed measuring probe 4 and the rangefinder 6 more stable during movement.

[0035] It is worth emphasizing that the distance between the protective box 712 and the rotating column 73 is 2-7 cm, and the distance between the protective box 712 and the gear 79 on the same side is 3-8 cm. In this article, the distance between the protective box 712 and the rotating column 73 is preferably 5 cm, and the distance between the protective box 712 and the gear 79 on the same side is preferably 6 cm, so that the rotation of the rotating column 73 and the two gears 79 is not hindered.

[0036] Finally, it should be noted that the speed probe 4, rangefinder 6, motor 710 and other components involved in the present invention are all universal standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted controllers and power supplies, are connected through wires. The specific connection means should refer to the working principle of the present invention. The electrical connection between each electrical component is completed in a sequential working order, and the detailed connection means are all well-known technologies in the art.

[0037] In the specific use of this embodiment, when it is necessary to adjust the distance between the speed measuring probe 4 and the toothed disc 2, the motor 710 and the distance meter 6 are first started by the external PLC. The output shaft of the motor 710 rotates to drive the rotating shaft 711 connected thereto coaxially to rotate. The rotating shaft 711 rotates to drive the same-side gear 79 coaxially fixed thereto to rotate. The rotation of the gear 79 drives another gear 79 meshing therewith to rotate. The rotation of the other gear 79 drives the rotating column 73 coaxially fixed thereto to rotate. The rotation of the rotating column 73 drives the rotating roller 72 coaxially fixed thereto to rotate. The rotation of the rotating roller 72 drives the cylindrical cam 74 coaxially fixed thereto to rotate. The rotation of the cylindrical cam 74 drives the outer wall thereof The slide groove on it rotates, and the cylindrical cam 74 rotates to drive the slide column 77 which is slidably connected to the slide groove on its outer wall to move. The slide column 77 moves under the guidance of the moving block 75, the guide block 78 and the guide groove on the top surface of the horizontal plate end of the vertical plate 71. The movement of the moving block 75 drives the moving rod 76 fixed thereto to move, and the movement of the moving rod 76 drives the detection rod 3 and the distance measuring rod 5 fixed thereto to move. When the rangefinder 6 measures that the distance between it and the toothed disc 2 is appropriate, the rangefinder 6 and the motor 710 are turned off through the external PLC, thereby completing the adjustment work. It should be added that the distance between the speed probe 4 and the toothed disc 2 is equal to the difference between the value measured by the rangefinder 6 and the length of the speed probe 4.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear disc speed probe gap measuring tool for a hydro-turbine generator set, comprising a generator housing (1), a gear disc (2) installed inside the generator housing (1), and a speed probe (4) located inside the generator housing (1) and used to test the rotational speed of the gear disc (2), characterized in that: The speed measuring probe (4) is located on the right side of the toothed disc (2), a detection rod (3) is fixed on the right side surface of the speed measuring probe (4), a distance meter (6) for measuring the distance between the toothed disc (2) and the speed measuring probe (4) is provided on the right side of the toothed disc (2), a distance measuring rod (5) is fixed on the right side surface of the distance meter (6), and further comprises: An adjusting mechanism (7) is provided on the right inner wall of the generator housing (1) and is used to adjust the distance between the speed measuring probe (4) and the gear disc (2). The adjusting mechanism (7) comprises an L-shaped vertical plate (71) fixed on the right inner wall of the generator housing (1), a roller (72) rotatably connected to the vertical plate end of the vertical plate (71), a rotating column (73) coaxially fixed to the right surface of the roller (72) and rotatably connected to the right inner wall of the gear disc (2), a cylindrical cam (74) coaxially fixed to the circumferential outer wall of the roller (72), a moving block (75) slidably connected to the top surface of the horizontal plate end of the vertical plate (71), and a rotating column (73) fixed to the moving block. (75) a moving rod (76) on the front surface, two gears (79) located inside the generator housing (1) and used to drive the rotating column (73) to rotate, and a motor (710) installed on the right inner wall of the generator housing (1) and used to drive the two gears (79) to rotate, the two gears (79) being meshed with each other, a spiral groove being provided on the circumferential outer wall of the cylindrical cam (74), a sliding column (77) being slidably connected to the groove on the outer wall of the cylindrical cam (74) being fixed on the top surface of the moving block (75), and the detecting rod (3) and the ranging rod (5) being fixed on the left outer wall of the moving rod (76).

2. The hydraulic generator gear disc speed probe gap measuring tool according to claim 1 is characterized by: The regulating mechanism (7) further comprises a rotating shaft (711) coaxially connected to the output shaft of the motor (710), and the two gears (79) are coaxially fixed on the rotating shaft (711) and the circumferential outer wall of the rotating column (73).

3. The hydraulic generator gear speed probe gap measuring tool according to claim 1, characterized in that: A guide groove is provided on the top surface of the horizontal plate end of the vertical plate (71), and a guide block (78) is fixed on the bottom surface of the moving block (75) and is slidably connected to the guide groove on the top surface of the horizontal plate end of the vertical plate (71).

4. The hydraulic generator gear speed probe gap measuring tool according to claim 1, characterized in that: The speed measuring probe (4) corresponds to the position of the toothed disc (2) and is adapted in size, the distance meter (6) corresponds to the position of the toothed disc (2) and is adapted in size, and the left side surface of the distance measuring end of the distance meter (6) and the right side surface of the speed measuring probe (4) are located on the same plane.

5. The hydraulic generator gear speed probe gap measuring tool according to claim 1, characterized in that: The vertical plate (71) and the gear disc (2) do not contact each other, and the gear disc (2) and the generator housing (1) do not contact each other.

6. The hydraulic generator gear speed probe gap measuring tool according to claim 2, characterized in that: The regulating mechanism (7) further comprises a protection box (712) fixed on the right inner wall of the generator housing (1); the motor (710) is located inside the protection box (712); and the rotating shaft (711) passes through the left outer wall of the protection box (712).

7. The hydraulic generator gear speed probe gap measuring tool according to claim 3, characterized in that: The longitudinal cross-sectional shape of the guide groove on the top surface of the horizontal plate end of the vertical plate (71) is convex, and the shape of the guide block (78) is convex to match the shape of the guide groove on the top surface of the horizontal plate end of the vertical plate (71).

8. The hydraulic generator gear speed probe gap measuring tool according to claim 6, characterized in that: The distance between the protection box (712) and the rotating column (73) is 2-7 cm, and the distance between the protection box (712) and the gear (79) on the same side is 3-8 cm.

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