Mechanical structure for measuring operation angle of deflector of impact model water turbine

Abstract

The utility model belongs to the technical field of water turbine deflectors, and particularly relates to a mechanical structure for measuring the operation angle of an impact model water turbine deflector. According to the technical scheme, the mechanical structure for measuring the operation angle of the deflector of the impact model water turbine comprises an end cover, the deflector and an angular displacement sensor, a fixing pin is connected between the end cover and the deflector, and a fine pin is connected between the deflector and the fixing pin; the fixing pin is connected with a parallel line jackscrew coupling; the parallel line jackscrew coupling is connected with a measuring shaft of the angular displacement sensor; an angular displacement sensor fixing block is fixed on the end cover, and the body of the angular displacement sensor is fixed on the angular displacement sensor fixing block. The utility model provides a mechanical structure for measuring the operation angle of a deflector of an impact model water turbine.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water turbine deflector, especially relates to a kind of measurement mechanical structure of operating angle of impact type model water turbine deflector. BACKGROUND

[0002] As shown in Figure 2 The measurement structure of the operating angle of the deflector of the existing impact type water turbine model device is that the deflector is connected with the end cover through a fixed pin, and the deflector can rotate with the fixed pin around the center line of the fixed pin as a rotating shaft. The fixed pin is connected with the screw rod in a square hole pin mode, and a hole matched with the measuring shaft of the angular displacement sensor is formed in the upper part of the screw rod. When the deflector rotates, the fixed pin rotates together, and the fixed pin and the screw rod rotate as a whole to drive the measuring shaft below the angular displacement sensor to rotate, so as to measure the angle. The measuring shaft of the angular displacement sensor can rotate around its body, and the body is fixed with the upper cover plate of the model device above the deflector.

[0003] The disadvantage is that the rotating angle of the deflector deviates from the rotating angle of the fixed pin because the deflector and the fixed pin are not rigidly connected. Secondly, during the operation of the deflector, the rotating shaft around the center line of the fixed pin and the fixed shaft of the angular displacement sensor above are different because of installation and processing deviation. Because the connection between them is not soft, there is a certain deviation between the measuring angle of the angular displacement sensor and the rotating angle of the fixed pin below after a long time of operation, and the different operation of the measuring shaft of the angular displacement sensor and its body is easy to damage the angular displacement sensor. In addition, because the body of the angular displacement sensor is fixed on the upper cover plate above the model device, the connecting rod is too long, and it is difficult to ensure the concentricity of the fixed pin below and the measuring shaft of the angular displacement sensor above on the basis of processing error, so the measuring angle of the angular displacement sensor will also be deviated. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a kind of measurement mechanical structure of operating angle of impact type model water turbine deflector.

[0005] The technical scheme adopted by the utility model is:

[0006] A kind of measurement mechanical structure of operating angle of impact type model water turbine deflector, including end cover, deflector and angular displacement sensor, fixed pin is connected between end cover and deflector, and thin pin is connected between deflector and fixed pin;Parallel line top screw coupling is connected on the fixed pin, and the measuring shaft of the angular displacement sensor is connected with the parallel line top screw coupling;Angular displacement sensor fixing block is fixed on the end cover, and the body of the angular displacement sensor is fixed on the angular displacement sensor fixing block.

[0007] The fixed pin passes through the fixed pin hole on the end cover and the pin hole on the deflector, so that the deflector can rotate around the fixed pin as the center axis. Then the deflector is connected with the fixed pin again through a thin pin. In this case, due to the existence of the thin pin, the fixed pin and the deflector are connected as a rigid body, and the rotation angle of the fixed pin is consistent with the rotation angle of the deflector.

[0008] The rotation angle of the fixed pin is measured by connecting a parallel line top pin coupling with the measuring shaft of the angle displacement sensor. The function of the parallel line coupling is to avoid the rotation axis of the body of the angle displacement sensor from being different from the rotation axis of the fixed pin below during installation, and to play a role of a buffer soft connection, so as to protect the angle displacement sensor from being damaged.

[0009] The body of the angle displacement sensor is fixed on the angle displacement sensor fixing block through several screws. The angle displacement sensor fixing block is fixed on the end cover of the nozzle through threads. The angle displacement sensor is fixed on the end cover through the angle displacement sensor fixing block, instead of being fixed on the rest of the device (such as the upper cover plate), so that the initial concentricity and position degree of the angle displacement sensor and the fixed pin below during installation can be ensured by controlling the machining size of the angle displacement sensor fixing block.

[0010] As a preferred scheme of the utility model, the thin pin is perpendicular to the fixed pin.

[0011] As a preferred scheme of the utility model, one end of the deflector is provided with a driving end, and the driving end is provided with a driving connection hole for connecting a driving device.

[0012] As a preferred scheme of the utility model, the side surface of the end cover is provided with a connecting lug, and the fixed pin is connected between the connecting lug of the end cover and the deflector.

[0013] As a preferred scheme of the utility model, the connecting lug of the end cover and the deflector are both provided with pin holes, and the fixed pin passes through the pin holes of the connecting lug and the deflector.

[0014] As a preferred scheme of the utility model, the end cover is connected with the nozzle body through a flange.

[0015] As a preferred scheme of the utility model, one end of the angle displacement sensor fixing block is fixed on the flange of the end cover.

[0016] As a preferred scheme of the utility model, the body of the angle displacement sensor is fixed on the angle displacement sensor fixing block through screws.

[0017] As a preferred scheme of the utility model, the angle displacement sensor fixing block is fixed on the end cover of the nozzle through screws.

[0018] The utility model discloses the beneficial effect is:

[0019] 1. The utility model discloses the fixed pin is connected to become a whole with the thin pin and the deflector, and the rotation angle of deflector is same with the rotation angle of fixed pin, and the angle deviation of sliding cannot appear.

[0020] 2. The utility model discloses the fixed pin and angle displacement sensor are connected with parallel line shaft coupling and are connected softly, and do not need to worry about the destruction of sensor because the angle displacement sensor measuring shaft and the lower fixed pin measuring shaft run eccentric.

[0021] 3. The utility model discloses the angle displacement sensor is fixed on the end cover through the angle displacement sensor fixed block, and is not fixed in the rest of device (such as the upper cover plate), can guarantee the initial concentricity of angle displacement sensor and the fixed pin below and the requirement of position degree through the processing size control of fixed block. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of the utility model discloses;

[0023] Figure 2 It is the structure schematic diagram of the running angle measurement structure of prior deflector.

[0024] In the drawing, 1 is end cover, 2 is deflector, 3 is angle displacement sensor, 4 is fixed pin, 5 is thin pin, 6 is parallel line top silk shaft coupling, 7 is angle displacement sensor fixed block. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents the selected embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the protection of the utility model. It should be noted that the embodiments in the utility model and the features in the embodiment can be combined with each other without conflict.

[0027] As Figure 1The measuring mechanism for the operating angle of the deflector of the impulse model water turbine in the embodiment is shown in the figure, and comprises an end cover 1, a deflector 2 and an angular displacement sensor 3. A fixed pin 4 is connected between the end cover 1 and the deflector 2. A thin pin 5 is connected between the deflector 2 and the fixed pin 4. A parallel line top screw coupling 6 is connected to the fixed pin 4. The parallel line top screw coupling 6 is connected to the measuring shaft of the angular displacement sensor 3. An angular displacement sensor fixing block 7 is fixed to the end cover 1. The body of the angular displacement sensor 3 is fixed to the angular displacement sensor fixing block 7.

[0028] The fixed pin 4 passes through the fixed pin hole in the end cover 1 and the pin hole in the deflector 2, so that the deflector 2 can rotate around the fixed pin 4 as the center axis. Then the deflector 2 is connected to the fixed pin 4 again through a thin pin 5. In this case, the fixed pin 4 and the deflector 2 are connected as a rigid body due to the presence of the thin pin 5. The rotation angle of the fixed pin 4 is consistent with the operating angle of the deflector 2.

[0029] The rotation angle of the fixed pin 4 is measured by connecting a parallel line top screw coupling 6 to the measuring shaft of the angular displacement sensor 3. The function of the parallel line coupling is to avoid the rotation axis of the body of the angular displacement sensor 3 from being different from the rotation axis of the fixed pin 4 below during installation, so as to play a role of a soft connection buffer and protect the angular displacement sensor 3 from being damaged.

[0030] The body of the angular displacement sensor 3 is fixed to the angular displacement sensor fixing block 7 through several screws. The angular displacement sensor fixing block 7 is fixed to the end cover 1 of the nozzle through threads. The angular displacement sensor 3 is fixed to the end cover 1 through the angular displacement sensor fixing block 7, instead of being fixed to the rest of the device (such as the upper cover plate), so that the initial concentricity and position degree requirements of the angular displacement sensor 3 and the fixed pin 4 below during installation can be ensured by controlling the machining size of the angular displacement sensor fixing block 7.

[0031] The thin pin 5 is perpendicular to the fixed pin 4.

[0032] One end of the deflector 2 is provided with a driving end, and the driving end is provided with a driving connection hole for connecting a driving device.

[0033] The side surface of the end cover 1 is provided with a connecting lug, and the fixed pin 4 is connected between the connecting lug of the end cover 1 and the deflector 2.

[0034] Pin holes are arranged on the connecting lug of the end cover 1 and the deflector 2, and the fixed pin 4 passes through the pin holes of the connecting lug and the deflector 2.

[0035] The end cover 1 is connected to the nozzle body through a flange.

[0036] One end of the angular displacement sensor fixing block 7 is fixed to the flange of the end cover 1.

[0037] The body of the angular displacement sensor 3 is fixed on the angular displacement sensor fixing block 7 by a screw.

[0038] The angular displacement sensor fixing block 7 is fixed on the end cover 1 of the nozzle by a screw.

[0039] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, any technical scheme falling into the scope defined by the utility model claim falls within the protection scope of the utility model.

Claims

1. A mechanical structure for measuring the operating angle of a deflector in an impact-type model water turbine, characterized in that: The device includes an end cap (1), a deflector (2), and an angular displacement sensor (3). A fixing pin (4) connects the end cap (1) and the deflector (2), and a fine pin (5) connects the deflector (2) and the fixing pin (4). A parallel line set screw coupling (6) is connected to the fixing pin (4), and the parallel line set screw coupling (6) is connected to the measuring shaft of the angular displacement sensor (3). An angular displacement sensor fixing block (7) is fixed on the end cap (1), and the body of the angular displacement sensor (3) is fixed on the angular displacement sensor fixing block (7).

2. The mechanical structure for measuring the operating angle of the deflector of an impact-type model water turbine according to claim 1, characterized in that: The fine pin (5) is perpendicular to the fixed pin (4).

3. The mechanical structure for measuring the operating angle of the deflector of an impact-type model water turbine according to claim 1, characterized in that: One end of the deflector (2) is provided with a drive end, and the drive end is provided with a drive connection hole for connecting a drive device.

4. The mechanical structure for measuring the operating angle of the deflector of an impact-type model water turbine according to claim 1, characterized in that: The end cap (1) is provided with a connecting lug on its side, and a fixing pin (4) is connected between the connecting lug of the end cap (1) and the deflector (2).

5. The mechanical structure for measuring the operating angle of an impact-type model turbine deflector according to claim 4, characterized in that: The end cap (1) and the deflector (2) are both provided with pin holes, and the fixing pin (4) passes through the pin hole of the connecting ear and the pin hole of the deflector (2).

6. The mechanical structure for measuring the operating angle of the deflector of an impact-type model water turbine according to claim 1, characterized in that: The end cap (1) is connected to the nozzle body via a flange.

7. The mechanical structure for measuring the operating angle of an impact-type model turbine deflector according to claim 6, characterized in that: One end of the angular displacement sensor fixing block (7) is fixed to the flange of the end cover (1).

8. The mechanical structure for measuring the operating angle of the deflector of an impact-type model water turbine according to claim 1, characterized in that: The body of the angular displacement sensor (3) is fixed to the angular displacement sensor fixing block (7) by screws.

9. The mechanical structure for measuring the operating angle of the deflector of an impact-type model water turbine according to claim 1, characterized in that: The angular displacement sensor fixing block (7) is fixed to the end cap (1) of the nozzle by screws.

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