Generator set transmission structure fatigue damage on-line monitoring device

Abstract

The utility model discloses a generator set transmission structure fatigue damage on-line monitoring device which comprises a transmission shaft, a base is arranged at the bottom of the transmission shaft, a first arc-shaped plate is arranged below the transmission shaft, the first arc-shaped plate is fixedly connected with the base, a second arc-shaped plate is arranged above the transmission shaft, and the second arc-shaped plate is fixedly connected with the base. The second arc-shaped plate is fixedly connected with the first arc-shaped plate, convex blocks are arranged on the outer walls of the first arc-shaped plate and the second arc-shaped plate at equal intervals, and first measuring holes are formed in the convex blocks located above and below the transmission shaft. The utility model relates to the technical field of wind driven generator operation monitoring, and solves the problems that in the prior art, fatigue damage of a transmission structure of a wind driven generator always depends on regular manual inspection or off-line analysis, so that the fatigue damage of the transmission structure of a generator set cannot be found and processed in time; the maintenance cost and the operation risk of the wind driven generator are increased, and the consumed manpower is large.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind driven generator operation monitoring technical field, concretely is a kind of fatigue damage on-line monitoring device of generator set transmission structure. BACKGROUND

[0002] Wind driven generator is a kind of device using wind energy to generate electricity, is widely applied and developed in global scope, through the rotation of wind wheel, utilize transmission structure to drive generator to work, wind energy is converted into electric energy, and is delivered to grid, provides clean, renewable energy for thousands of households, and its transmission structure's fatigue damage directly influences the stable operation and life of unit.In prior art, the fatigue damage of wind driven generator transmission structure often relies on periodic manual inspection or offline analysis, so that the fatigue damage of generator set transmission structure cannot be found and handled in time, increase the maintenance cost and operation risk of wind driven generator, and consume more manpower. SUMMARY

[0003] In view of the deficiencies of prior art, the utility model provides a kind of fatigue damage on-line monitoring device of generator set transmission structure, solve the fatigue damage of wind driven generator transmission structure in prior art often relies on periodic manual inspection or offline analysis, so that the fatigue damage of generator set transmission structure cannot be found and handled in time, increase the maintenance cost and operation risk of wind driven generator, and consume more manpower big problem.

[0004] To achieve the above object, the utility model is realized by the following technical scheme: a kind of fatigue damage on-line monitoring device of generator set transmission structure, including transmission shaft, the bottom of the transmission shaft is provided with base, the first arc plate is arranged below the transmission shaft, the first arc plate is fixedly connected with base, the second arc plate is arranged above the transmission shaft, the second arc plate is fixedly connected with first arc plate, the outer wall of the first arc plate and second arc plate is equidistantly provided with lug, the inside of the lug located above and below transmission shaft is all provided with first measuring hole, the inside of the lug located on the two sides of first measuring hole is all provided with second measuring hole, the lug located above and below transmission shaft is all installed with laser ranging sensor, the sensing end of the laser ranging sensor is correspondingly arranged with first measuring hole, the lug located on the two sides of laser ranging sensor is all installed with eddy current sensor, the eddy current sensor is correspondingly arranged with second measuring hole, the side of base is installed with controller, the top of the controller is provided with signal transmission module, the laser ranging sensor, eddy current sensor and signal transmission module are electrically connected with controller.

[0005] Preferably, the top of the base is fixedly connected with first side plates on both sides, the first side plates are fixedly connected with the first arc-shaped plates, the second arc-shaped plates are fixedly connected with second side plates on both sides, the first arc-shaped plates and the second arc-shaped plates are provided with fixed plates on both sides, and the fixed plates located on the first arc-shaped plates are fixedly connected with the fixed plates located on the second arc-shaped plates through first fixing bolts.

[0006] Preferably, the first side plates and the second side plates are provided with plastic cover plates on both sides, and the plastic cover plates are fixedly connected with the first side plates and the second side plates through second fixing bolts.

[0007] Preferably, the outer wall of the base is equidistantly provided with fixing holes.

[0008] Preferably, the first side plates are equidistantly provided with reinforcing plates on the sides away from each other, and the reinforcing plates are fixedly connected with the base and the first side plates, respectively.

[0009] The utility model provides a kind of fatigue damage on-line monitoring device of generator set transmission structure.It has the following beneficial effects: the fatigue damage on-line monitoring device of generator set transmission structure, through the cooperation between base, first arc-shaped plate, second arc-shaped plate, lug, first measuring hole, second measuring hole, laser ranging sensor, eddy current sensor, controller and signal transmission module, by first arc-shaped plate and second arc-shaped plate are encircled in the outside of transmission shaft, and multiple laser ranging sensors and eddy current sensors are fixed with lug, can be sensed by laser ranging sensor and eddy current sensor to the displacement, vibration, rotational speed etc of transmission shaft Multiple parameters, and sensing signal is transmitted to controller in real time, and controller is uploaded to monitoring network by signal transmission module with relevant data, it is convenient for staff to analyze relevant data by remote monitoring network, can real-time monitor the operating state of wind driven generator transmission structure, and the fatigue damage situation of generator set transmission structure is promptly discovered and disposed, so it helps to improve the maintenance convenience and operating safety of wind driven generator, and can reduce manpower.

[0010] Through the cooperation between base, first arc-shaped plate, second arc-shaped plate, first side plate, second side plate, fixed plate and first fixing bolt, the fixation between first arc-shaped plate and second arc-shaped plate is realized, and the structural strength of first arc-shaped plate and second arc-shaped plate can be improved by first side plate and second side plate, while providing protection on the side of each sensor, which can avoid damage to monitoring sensor caused by accidental bumping, so that the service life of monitoring sensor can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a structural schematic diagram of the utility model;

[0012] Fig. 2It is the appearance schematic view of the protruding block, the first side plate and the plastic cover plate in the utility model.

[0013] Fig. 3 It is the appearance sectional view of the base, the first arc-shaped plate and the second arc-shaped plate in the utility model.

[0014] In the figure: 1, transmission shaft; 2, base; 3, first arc-shaped plate; 4, second arc-shaped plate; 5, protruding block; 6, first measuring hole; 7, second measuring hole; 8, laser ranging sensor; 9, eddy current sensor; 10, controller; 11, signal transmission module; 12, first side plate; 13, second side plate; 14, fixed plate; 15, first fixed bolt; 16, plastic cover plate; 17, second fixed bolt; 18, fixed hole; 19, reinforcing plate. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0016] In the prior art, the fatigue damage of the transmission structure of the wind driven generator often depends on periodic manual inspection or offline analysis, so that the fatigue damage of the transmission structure of the generator set cannot be found and handled in time, the maintenance cost and operation risk of the wind driven generator are increased, and a lot of manpower is consumed.

[0017] Therefore, the utility model provides a kind of generator set transmission structure fatigue damage on-line monitoring device, through the cooperation between base, first arc-shaped plate, second arc-shaped plate, protruding block, first measuring hole, second measuring hole, laser ranging sensor, eddy current sensor, controller and signal transmission module, by first arc-shaped plate and second arc-shaped plate are encircled in the outside of transmission shaft, and multiple laser ranging sensor and eddy current sensor are fixed with protruding block, the displacement, vibration, rotational speed and other parameters of transmission shaft are sensed by laser ranging sensor and eddy current sensor, and sensing signal is transmitted to controller in real time, controller is uploaded to monitoring network by signal transmission module with relevant data, it is convenient for staff to analyze relevant data by remote monitoring network, the running state of the transmission structure of wind driven generator is monitored in real time, the fatigue damage of the transmission structure of generator set is found and handled in time, the maintenance convenience and operation safety of wind driven generator are improved, and manpower is reduced.

[0018] Through the person skilled in the art, all electrical components in the case are connected to the power supply through the wire, and the appropriate controller and encoder should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should be referred to the working principle of the above-mentioned working principle, the working order of each electrical component is completed, and the detailed connection means is the prior art. The working principle and process are mainly introduced below, and the electrical control is not described.

[0019] By Figs. 1-3 It can be known that the fatigue damage on-line monitoring device of the generator set transmission structure comprises a transmission shaft 1, the transmission shaft 1 is a key component of the generator set transmission structure, is used for transmitting power and bearing torque, the bottom of the transmission shaft 1 is provided with a base 2, the base 2 is fixed to the mounting surface below the transmission shaft 1, is used for fixing and supporting the monitoring device, the lower portion of the transmission shaft 1 is provided with a first arc-shaped plate 3, the first arc-shaped plate 3 is fixedly connected with the base 2, the upper portion of the transmission shaft 1 is provided with a second arc-shaped plate 4, the second arc-shaped plate 4 is fixedly connected with the first arc-shaped plate 3, the outer walls of the first arc-shaped plate 3 and the second arc-shaped plate 4 are equidistantly provided with protrusions 5, the interiors of the protrusions 5 located above and below the transmission shaft 1 are both provided with first measuring holes 6, the interiors of the protrusions 5 located on both sides of the first measuring holes 6 are both provided with second measuring holes 7, the protrusions 5 located above and below the transmission shaft 1 are both installed with laser ranging sensors 8, the sensing ends of the laser ranging sensors 8 are correspondingly arranged with the first measuring holes 6, the protrusions 5 located on both sides of the laser ranging sensors 8 are both installed with eddy current sensors 9, the eddy current sensors 9 are correspondingly arranged with the second measuring holes 7, one side of the base 2 is installed with a controller 10, the top of the controller 10 is provided with a signal transmission module 11, the laser ranging sensors 8, the eddy current sensors 9 and the signal transmission module 11 are all electrically connected with the controller 10;

[0020] In the implementation process, it is worth pointing out that the transmission shaft 1 is a key component of the generator set transmission structure, used to transmit power and withstand torque, the base 2 is fixed to the mounting surface below the transmission shaft 1, used to fix and support the monitoring device, through the cooperation between the base 2, the first arc-shaped plate 3 and the second arc-shaped plate 4, by fixing the first arc-shaped plate 3 and the second arc-shaped plate 4, the first arc-shaped plate 3 and the second arc-shaped plate 4 form a ring around the transmission shaft 1, and the center of the ring formed by the first arc-shaped plate 3 and the second arc-shaped plate 4 is consistent with the axis of the transmission shaft 1, through the cooperation between the first arc-shaped plate 3, the second arc-shaped plate 4, the protrusion 5, the first measuring hole 6, the second measuring hole 7, the laser ranging sensor 8 and the eddy current sensor 9, by fixing the laser ranging sensor 8 and the eddy current sensor 9 with the protrusion 5, the laser ranging sensor 8 and the eddy current sensor 9 can monitor the working state of the transmission shaft 1 through the first measuring hole 6 and the second measuring hole 7, through the cooperation between the base 2, the first arc-shaped plate 3, the second arc-shaped plate 4, the protrusion 5, the first measuring hole 6, the second measuring hole 7, the laser ranging sensor 8, the eddy current sensor 9, the controller 10 and the signal transmission module 11, by fixing the first arc-shaped plate 3 and the second arc-shaped plate 4 on the outside of the transmission shaft 1, and fixing multiple laser ranging sensors 8 and eddy current sensors 9 with the protrusion 5, through the laser ranging sensor 8 and the eddy current sensor 9 to sense multiple parameters such as displacement, vibration and speed of the transmission shaft 1, and transmit the sensing signals to the controller 10 in real time, the controller 10 uploads the related data to the monitoring network through the signal transmission module 11, so that the staff can analyze the related data through the remote monitoring network, monitor the running state of the wind driven generator transmission structure in real time, discover and handle the fatigue damage of the generator set transmission structure in time, improve the maintenance convenience and operation safety of the wind driven generator, and reduce the labor, wherein the specific models of the laser ranging sensor 8, the eddy current sensor 9, the controller 10 and the signal transmission module 11 are not limited, as long as they meet the use requirements;

[0021] It can be understood that the number and distribution of the laser ranging sensor 8 and the eddy current sensor 9 can be set according to actual needs, which can meet the monitoring requirements of the transmission structure;

[0022] Further, the top of the base 2 is fixedly connected with a first side plate 12 on both sides, the first side plate 12 is fixedly connected with the first arc-shaped plate 3, the second arc-shaped plate 4 is fixedly connected with a second side plate 13 on both sides, the first arc-shaped plate 3 and the second arc-shaped plate 4 are provided with a fixed plate 14 on both sides, the fixed plate 14 located on the first arc-shaped plate 3 is fixedly connected with the fixed plate 14 located on the second arc-shaped plate 4 through a first fixing bolt 15;

[0023] In the specific implementation process, it is particularly worth pointing out that the first arc-shaped plate 3 is supported and fixed on the top of the base 2 through the cooperation between the base 2, the first arc-shaped plate 3 and the first side plate 12, the connection and fixation between the first arc-shaped plate 3 and the second arc-shaped plate 4 are realized through the cooperation between the first arc-shaped plate 3, the second arc-shaped plate 4, the fixed plate 14 and the first fixed bolt 15, the fixation of the first arc-shaped plate 3 and the second arc-shaped plate 4 is realized through the cooperation between the base 2, the first arc-shaped plate 3, the second arc-shaped plate 4, the first side plate 12, the second side plate 13, the fixed plate 14 and the first fixed bolt 15, and the structural strength of the first arc-shaped plate 3 and the second arc-shaped plate 4 is improved through the first side plate 12 and the second side plate 13, and at the same time, the protection of the side of each sensor is provided to avoid damage to the monitoring sensor caused by accidental knocking and improve the service life of the monitoring sensor;

[0024] Further, the two sides of the first side plate 12 and the second side plate 13 are provided with plastic cover plates 16, and the plastic cover plates 16 are fixedly connected with the first side plate 12 and the second side plate 13 through the second fixed bolts 17;

[0025] In the specific implementation process, it is particularly worth pointing out that the two half ring plates are spliced through the cooperation between the first side plate 12, the second side plate 13, the plastic cover plate 16 and the second fixed bolt 17, and the space between the transmission shaft 1 and the first arc-shaped plate 3 and the second arc-shaped plate 4 is covered by the second fixed bolt 17 fixed to the two sides of the first side plate 12 and the second side plate 13, so as to prevent the entry of dust or sundries and avoid affecting the sensing accuracy of the sensor;

[0026] Further, the outer wall of the base 2 is provided with fixed holes 18 equidistantly, and the fixed holes 18 are used for fixing the base 2 with the mounting surface below the transmission shaft 1;

[0027] In the specific implementation process, it is particularly worth pointing out that the fixed holes 18 are used for fixing the base 2 with the mounting surface below the transmission shaft 1;

[0028] Further, the first side plate 12 is provided with reinforcing plates 19 equidistantly away from each other, and the reinforcing plates 19 are used for improving the structural stability between the base 2 and the first side plate 12, and the reinforcing plates 19 are fixedly connected with the base 2 and the first side plate 12 respectively;

[0029] In the specific implementation process, it is particularly worth pointing out that the reinforcing plates 19 are used for improving the structural stability between the base 2 and the first side plate 12.

[0030] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connecting" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the above terms in the present application can be understood according to the specific meaning of the above terms by the person skilled in the art according to the specific circumstances.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An on-line monitoring device for fatigue damage of a power unit transmission structure, comprising a transmission shaft (1), characterized in that: The bottom of the transmission shaft (1) is provided with a base (2), the lower part of the transmission shaft (1) is provided with a first arc-shaped plate (3), the first arc-shaped plate (3) is fixedly connected with the base (2), the upper part of the transmission shaft (1) is provided with a second arc-shaped plate (4), the second arc-shaped plate (4) is fixedly connected with the first arc-shaped plate (3), the outer walls of the first arc-shaped plate (3) and the second arc-shaped plate (4) are equidistantly provided with protrusions (5), the interiors of the protrusions (5) located above and below the transmission shaft (1) are both provided with first measuring holes (6), the interiors of the protrusions (5) located on both sides of the first measuring holes (6) are both provided with second measuring holes (7), the protrusions (5) located above and below the transmission shaft (1) are both installed with laser ranging sensors (8), the sensing ends of the laser ranging sensors (8) are correspondingly provided with the first measuring holes (6), the protrusions (5) located on both sides of the laser ranging sensors (8) are both installed with eddy current sensors (9), the eddy current sensors (9) are correspondingly provided with the second measuring holes (7), one side of the base (2) is installed with a controller (10), the top of the controller (10) is provided with a signal transmission module (11), the laser ranging sensors (8), the eddy current sensors (9) and the signal transmission module (11) are all electrically connected with the controller (10).

2. The online monitoring device for fatigue damage of a generator set transmission structure according to claim 1, characterized in that: The top of the base (2) is fixedly connected with first side plates (12) on both sides, the first side plates (12) are fixedly connected with the first arc-shaped plate (3), both sides of the second arc-shaped plate (4) are fixedly connected with second side plates (13), both sides of the first arc-shaped plate (3) and the second arc-shaped plate (4) are provided with fixed plates (14), the fixed plates (14) located on the first arc-shaped plate (3) are fixedly connected with the fixed plates (14) located on the second arc-shaped plate (4) through first fixed bolts (15).

3. The online monitoring device for fatigue damage of a generator set transmission structure according to claim 2, characterized in that: Both sides of the first side plates (12) and the second side plates (13) are provided with plastic cover plates (16), the plastic cover plates (16) are fixedly connected with the first side plates (12) and the second side plates (13) through second fixed bolts (17).

4. The online monitoring device for fatigue damage of a generator set transmission structure according to claim 1, characterized in that: The outer wall of the base (2) is equidistantly provided with fixed holes (18).

5. The fatigue damage on-line monitoring device for the transmission structure of a generator set according to claim 2, characterized in that: The sides of the first side plates (12) away from each other are equidistantly provided with reinforcing plates (19), the reinforcing plates (19) are fixedly connected with the base (2) and the first side plates (12) respectively.

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