Magnetoelectric speed measurement sensor of water turbine

Abstract

The utility model discloses a water turbine magnetoelectric velocity measurement sensor, which comprises a mounting rack, a mounting seat, a driving piece, a mounting plate and a probe, one end of the mounting rack is arranged on a pit lining, the mounting seat is arranged at one end of the mounting rack far away from the pit lining, the mounting plate is a curved plate, and the mounting seat is provided with a guide rail matched with the arc-shaped side edge of the mounting plate. The arc-shaped side edge of the mounting plate is slidably connected with the guide rail; the multiple probes are arranged on the inner side of the mounting plate at equal intervals along the same horizontal height, and the driving piece is arranged on the mounting base, is in driving connection with the mounting plate and is used for moving the mounting plate along the guide rail. According to the magnetoelectric speed measurement sensor of the water turbine, the speed measurement head can be conveniently moved in the horizontal direction according to speed measurement requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water turbine maintenance technical field, especially relate to a water turbine magnetoelectric speed sensor. BACKGROUND

[0002] The large shaft of the water turbine is provided with a gear disc, a plurality of speed measurement probes for detecting the protrusions on the gear disc are arranged around the gear disc, the existing speed measurement probes are generally fixedly arranged and cannot be moved in the horizontal direction according to the speed measurement requirements; the distance between the speed measurement probes and the protrusions needs to be rechecked after the water turbine is maintained to ensure that the distance meets the design requirements, and the shutdown position of the gear disc is not fixed, so sometimes the speed measurement probes cannot be accurately aligned with the positions of the protrusions, and it is inconvenient to recheck the distance. CONTENT

[0003] In order to solve the above problems existing in the prior art, the utility model aims at providing a water turbine magnetoelectric speed sensor which facilitates the movement of the speed measurement probes in the horizontal direction according to the speed measurement requirements.

[0004] The utility model adopts the technical scheme that:

[0005] A water turbine magnetoelectric speed sensor, comprising a mounting frame, a mounting seat, a driving member, a mounting plate and probes, one end of the mounting frame is arranged on the pit liner, the mounting seat is arranged at the end of the mounting frame away from the pit liner, the mounting plate is a curved plate, the mounting seat is provided with a guide rail matched with the arc-shaped side edge of the mounting plate, and the arc-shaped side edge of the mounting plate is slidably connected with the guide rail; the probes are arranged on the inner side of the mounting plate at the same horizontal height at equal intervals, the driving member is arranged on the mounting seat and drivingly connected with the mounting plate to move the mounting plate along the guide rail.

[0006] As a preferred scheme of the utility model, the mounting seat comprises a bottom plate and a side plate, the side plate is vertically arranged on one side of the bottom plate and connected with the mounting frame, and the guide rail is arranged on the bottom plate.

[0007] As a preferred scheme of the utility model, the convex surface of the mounting plate is opposite to the side plate, the driving member comprises a motor and a driving wheel arranged on the shaft of the motor, the motor is arranged on the side plate, and the convex surface of the mounting plate is provided with a driving strip matched with the movement of the driving wheel.

[0008] As a preferred scheme of the utility model, the driving wheel is a gear, and the driving strip is an arc-shaped rack meshing with the gear.

[0009] As a preferred scheme of the utility model, the mounting frame comprises a connecting plate, a first connecting rod and a second connecting rod, the connecting plate is vertically arranged on the pit liner, the two ends of the first connecting rod are respectively connected with the side plate and the connecting plate perpendicularly, the two ends of the second connecting rod are respectively connected with the side plate and the connecting plate, and the second connecting rod is obliquely arranged at the bottom of the first connecting rod.

[0010] As a preferred scheme of the utility model, a plurality of reinforcing rods are arranged between the first connecting rod and the second connecting rod.

[0011] As a preferred scheme of the utility model, the bottom plate is in a fan shape, and the side plate is arranged on the longer curved edge of the bottom plate.

[0012] The utility model has the advantages of:

[0013] 1. The mounting frame stably supports the mounting seat, the driving member, the mounting plate and the probe on the mounting seat, and the probe for speed measurement is stably mounted around the tooth disc of the water turbine, when the distance between the probe and the convex teeth of the tooth disc is checked after the water turbine is maintained, if the probe is not aligned with the convex teeth of the tooth disc, the position of the probe can be adjusted to be aligned with the convex teeth of the tooth disc by driving the mounting plate to move along the guide rail by the driving member.

[0014] 2. The fan-shaped bottom plate of the mounting seat is arranged at the edge close to the large shaft of the water turbine.

[0015] 3. The gear engages with the arc-shaped rack, so that the mounting plate is not easy to slip and is conveniently and stably moved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a sectional view of the utility model;

[0017] Fig. 2 is a top view of the mounting seat.

[0018] In the drawing: 11-connection plate; 12-first connecting rod; 13-second connecting rod; 14-reinforcing rod; 20-machine pit lining; 30-mounting seat; 31-bottom plate; 32-side plate; 33-guide rail; 40-mounting plate; 41-driving strip; 50-probe; 61-motor; 62-driving wheel. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0021] like Figs. 1-2 As shown, a turbine magnetoelectric speed sensor includes a mounting frame, a mounting base 30, a driving component, a mounting plate 40, and a probe 50. The mounting frame includes a connecting plate 11, a first connecting rod 12, and a second connecting rod 13. The connecting plate 11 is vertically mounted on the lining 20 of the turbine pit.

[0022] The mounting base 30 includes a base plate 31 and a side plate 32. The side plate 32 is vertically disposed on one side of the base plate 31 and connected to the end of the mounting frame away from the machine pit lining 20. The two ends of the first connecting rod 12 are vertically connected to the side plate 32 and the connecting plate 11, respectively. The two ends of the second connecting rod 13 are connected to the side plate 32 and the connecting plate 11, respectively, and are inclined at the bottom of the first connecting rod 12.

[0023] The mounting plate 40 is a curved plate, and the base plate 31 is provided with a guide rail 33 that matches the arc-shaped side of the mounting plate 40. The arc-shaped side of the mounting plate 40 is slidably connected to the guide rail 33.

[0024] The probe 50 is a magnetoelectric speed sensor probe 50 and there are multiple probes. The multiple magnetoelectric speed sensor probes 50 are equally spaced and arranged at the same horizontal height on the inner side of the mounting plate 40. This spacing allows all probes 50 to be aligned with the protruding teeth.

[0025] The convex surface of the mounting plate 40 is opposite to the side plate 32. The driving component includes a motor 61 and a drive wheel 62 mounted on the shaft of the motor 61. The motor 61 is mounted on the side plate 32. The convex surface of the mounting plate 40 is provided with a drive bar 41 that conforms to the movement of the drive wheel 62. The rotation of the drive wheel 62 can drive the drive bar 41 to move, which is used to move the mounting plate 40 along the guide rail 33.

[0026] The working principle of the above technical solution is as follows:

[0027] The mounting frame is installed on the liner 20 in the pit through the connecting plate 11, i.e. the outer edge of the gear disc of the large shaft of the water turbine, the first connecting rod 12 and the second connecting rod 13 are used to connect the mounting seat 30, the second connecting rod 13 is obliquely matched with the first connecting rod 12 to play a role of stable support, the mounting seat 30 is used to support the driving member, the mounting plate 40 and the probe 50, when the probe 50 is not aligned with the convex teeth of the gear disc after the water turbine is maintained and rechecked, the motor 61 can be started to drive the driving wheel 62 to rotate, the driving wheel 62 drives the driving strip 41 to realize the movement of the mounting plate 40 along the guide rail 33, so that the position of the probe 50 on the mounting plate 40 is adjusted to be aligned with the convex teeth of the gear disc.

[0028] In another embodiment, the driving wheel 62 can be selected as a gear, and the driving strip 41 is selected as an arc-shaped rack of the gear. The gear meshing the arc-shaped rack is not easy to slip, and the mounting plate 40 is conveniently and stably moved.

[0029] In another embodiment, as shown in Fig. 1 , a plurality of reinforcing rods 14 are arranged between the first connecting rod 12 and the second connecting rod 13. The reinforcing rods 14 play a role of reinforcing the mounting frame.

[0030] In another embodiment, as shown in Fig. 2 , the bottom plate 31 is in a fan shape, and the side plate 32 is arranged on the longer curved edge of the bottom plate 31. The fan-shaped bottom plate 31 of the mounting seat 30 facilitates the arrangement close to the edge of the large shaft of the water turbine.

[0031] The utility model is not limited to the above-mentioned optional implementation, and anyone can derive other various forms of products under the inspiration of the utility model, but no matter any change in shape or structure, any technical scheme falling within the scope defined by the claims of the utility model falls within the protection scope of the utility model.

Claims

1. A magnetoelectric speed sensor for a water turbine, characterized in that, The device includes a mounting bracket, a mounting base (30), a driving component, a mounting plate (40), and probes (50). One end of the mounting bracket is located on the lining (20) of the machine pit. The mounting base (30) is located at the end of the mounting bracket away from the lining (20). The mounting plate (40) is a curved plate. The mounting base (30) is provided with a guide rail (33) that matches the arc-shaped side of the mounting plate (40). The arc-shaped side of the mounting plate (40) is slidably connected to the guide rail (33). The probes (50) include multiple probes, which are equally spaced and located at the same horizontal height on the inner side of the mounting plate (40). The driving component is located on the mounting base (30) and drives the mounting plate (40) to move the mounting plate (40) along the guide rail (33).

2. The turbine magnetoelectric speed sensor according to claim 1, characterized in that, The mounting base (30) includes a base plate (31) and a side plate (32). The side plate (32) is vertically disposed on one side of the base plate (31) and connected to the mounting bracket. The guide rail (33) is disposed on the base plate (31).

3. The turbine magnetoelectric speed sensor according to claim 2, characterized in that, The convex surface of the mounting plate (40) is opposite to the side plate (32). The driving component includes a motor (61) and a drive wheel (62) mounted on the shaft of the motor (61). The motor (61) is mounted on the side plate (32). The convex surface of the mounting plate (40) is provided with a drive bar (41) that conforms to the movement of the drive wheel (62).

4. The turbine magnetoelectric speed sensor according to claim 3, characterized in that, The drive wheel (62) is a gear, and the drive rack (41) is an arc-shaped rack of meshing gears.

5. A hydro-turbine magneto-electric speed sensor according to claim 2, characterized in that, The mounting bracket includes a connecting plate (11), a first connecting rod (12), and a second connecting rod (13). The connecting plate (11) is vertically mounted on the lining (20) of the machine pit. The two ends of the first connecting rod (12) are vertically connected to the side plate (32) and the connecting plate (11), respectively. The two ends of the second connecting rod (13) are connected to the side plate (32) and the connecting plate (11), respectively, and are inclined at the bottom of the first connecting rod (12).

6. The turbine magnetoelectric speed sensor according to claim 5, characterized in that, Multiple reinforcing rods (14) are provided between the first connecting rod (12) and the second connecting rod (13).

7. A hydro-turbine magneto-electric speed sensor according to claim 2, characterized in that, The base plate (31) is fan-shaped, and the side plate (32) is located on the longer curved side of the base plate (31).

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