CN210166112U - Fatigue testing machine for generator stator insulation water conduit - Google Patents
Fatigue testing machine for generator stator insulation water conduit Download PDFInfo
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- CN210166112U CN210166112U CN201921101548.XU CN201921101548U CN210166112U CN 210166112 U CN210166112 U CN 210166112U CN 201921101548 U CN201921101548 U CN 201921101548U CN 210166112 U CN210166112 U CN 210166112U
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- fatigue testing
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Abstract
The application relates to the technical field of fatigue test equipment, and discloses a fatigue test machine for an insulating water conduit of a generator stator, which comprises a mechanical transmission part and an electrical control part, wherein the mechanical transmission part comprises a motor, a speed reducer, an eccentric shaft, a connecting rod, a vibration bracket, a fixed bracket and horizontal guide mechanisms, and the horizontal guide mechanisms are in two groups; the electric control part comprises a frequency converter, a temperature controller, a heating plate, a PLC and a relay. This application utilizes the actual operational environment of fatigue test simulation insulating leading pipe and realizes carrying out fatigue test's purpose to it, and then obtains the quality index of product through the fatigue performance that detects insulating leading pipe, thereby avoids using unqualified product to cause the pipeline seepage, finally leads to the generator to be burnt out.
Description
Technical Field
The utility model relates to a fatigue test equipment technical field, concretely relates to fatigue test machine for generator stator insulation leading pipe.
Background
The insulating water conduit used on the stator of the generator has good insulating property, temperature resistance and aging resistance, and the polytetrafluoroethylene has excellent chemical stability, aging resistance and electrical insulating property, so that the polytetrafluoroethylene is widely used for manufacturing the insulating water conduit of the stator of the generator. In the actual operation of the generator, cooling water is introduced into the stator coil by virtue of the insulating water conduit and is used for cooling the coil, so that the long-time normal operation of the generator is ensured, but in the operation process of the generator, any temperature change can cause the insulating water conduit to generate telescopic deformation, and the insulating water conduit can also bear the vibration load caused by the operation of the generator, so that the periodic load is generated, the loading frequency of the generator can be increased by hundreds of millions within the service life of the water conduit, the fatigue damage of the pipeline is easily caused, the problems of fatigue cracks and the like can occur for the pipeline with poor fatigue performance, the pipeline leakage is caused, the maintenance cost is increased, and in the serious case, the generator can be burnt out. Therefore, it is necessary to perform a fatigue test on the insulated water conduit in order to actually check the fatigue resistance of the insulated water conduit, and meanwhile, the fatigue life is also an important index for checking the quality of the insulated water conduit product, however, no fatigue test equipment specially aiming at the insulated water conduit of the generator stator exists in the market at present.
Disclosure of Invention
In order to overcome the problem and the defect that exist among the above-mentioned prior art, the utility model aims at providing a simple structure for detect generator stator's insulating leading water pipe fatigue performance's fatigue testing machine.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a fatigue testing machine for an insulating water conduit of a generator stator comprises a mechanical transmission part and an electrical control part, wherein the mechanical transmission part comprises a motor, a speed reducer, an eccentric shaft, a connecting rod, a vibration bracket, a fixed bracket and horizontal guide mechanisms, and the horizontal guide mechanisms are of two groups; the electric control part comprises a frequency converter, a temperature controller, a heating plate, a relay and a PLC control system.
Preferably, the motor is connected with the speed reducer, one end of the eccentric shaft is connected with an output shaft of the speed reducer, the other end of the eccentric shaft is connected with the connecting rod, the other end of the connecting rod is connected with the vibration support, and the two ends of the vibration support are connected with the horizontal guide mechanism.
Preferably, the horizontal guide mechanism comprises a linear guide rail and a sliding block, the sliding block is arranged on the linear guide rail in a sliding mode, and the other end of the sliding block is connected with the vibration support.
Preferably, the linear guide rail is fixed in the box body through a vertical plate.
Preferably, the motor is connected with the speed reducer through a coupling.
Preferably, the electrical control part further comprises a pulse detection part, and the pulse detection part comprises a high-speed pulse sensor arranged on the vertical plate and a pulse generation fluted disc arranged on the coupler.
Preferably, the electrical control portion further comprises an alarm.
Preferably, the mechanical transmission part is arranged in the box body, and the electrical control part is arranged in the electrical cabinet.
Preferably, the heating plate and the pulse detection part are arranged in the box body.
Preferably, the motor is a variable frequency motor.
The beneficial effect of this application:
(1) this application utilizes the actual operational environment of fatigue test simulation insulating leading pipe and realizes carrying out fatigue test's purpose to it, and then obtains the quality index of product through the fatigue performance that detects insulating leading pipe, thereby avoids using unqualified product to cause the pipeline seepage, finally leads to the generator to be burnt out.
(2) In this application, the both ends of vibration support are connected with the slider, and slider and linear guide form the guide rail pair, both play the effect of direction and play the effect of support again to the reciprocating linear motion of vibration support.
(3) In this application, the motor passes through shaft coupling and retarder connection, prevents to throw off between motor and the retarder to play an overload protection's effect.
(4) In this application, be provided with high-speed pulse sensor and pulse generation fluted disc on riser and the shaft coupling respectively, detect the rotational speed of motor through cooperation between them, make it remain throughout in the within range that the experiment required, avoid the rotational speed too big or undersize.
(5) In this application, the electrical control part has still included the alarm, when the inside high temperature of testing machine, in time sends the alarm sound and is used for reminding operating personnel, prevents to lead to equipment to fall or the experiment failure because of the temperature out of control.
Drawings
The foregoing and following detailed description of the invention will be apparent when read in conjunction with the following drawings, in which:
FIG. 1 is a schematic front view of the present application;
FIG. 2 is a schematic top view of the present application;
FIG. 3 is a left side view schematic diagram of the case of the present application;
FIG. 4 is a schematic view of a retarder according to the present application;
fig. 5 is an electrical control schematic diagram of the present application.
In the drawings:
1. a motor; 2. a speed reducer; 3. an eccentric shaft; 4. a connecting rod; 5. a vibration bracket; 6. fixing a bracket; 7. a horizontal guide mechanism; 8. a frequency converter; 9. a temperature controller; 10. heating plates; 11. a vertical plate; 12. a coupling; 13. a pulse detection section; 14. an alarm; 15. a box body; 16. an electrical cabinet; 17. an insulated water conduit to be tested; 71. a linear guide rail; 72. a slider; 131. a high-speed pulse sensor; 132. a pulse generating toothed disc.
Detailed Description
The technical solution for achieving the objectives of the present invention will be further described by using several specific examples, and it should be noted that the technical solution claimed in the present invention includes, but is not limited to, the following examples.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment discloses a fatigue testing machine for an insulated water conduit of a generator stator, which comprises a mechanical transmission part and an electrical control part, wherein the mechanical transmission part comprises a motor 1, a speed reducer 2, an eccentric shaft 3, a connecting rod 4, a vibration bracket 5, a fixed bracket 6 and horizontal guide mechanisms 7, and the horizontal guide mechanisms 7 are in two sets; the electric control part comprises a frequency converter 8, a temperature controller 9, a heating plate 10, a relay and a PLC control system.
The motor 1 is connected with the speed reducer 2, one end of the eccentric shaft 3 is connected with an output shaft of the speed reducer 2, the other end of the eccentric shaft is connected with the connecting rod 4, the other end of the connecting rod 4 is connected with the vibration support 5, and two ends of the vibration support 5 are connected with the horizontal guide mechanism 7.
The horizontal guide mechanism 7 comprises a linear guide rail 71 and a sliding block 72, the sliding block 72 is arranged on the linear guide rail 71 in a sliding mode, and the other end of the sliding block 72 is connected with the vibration support 5.
The linear guide 71 is fixed in the box body 15 through a vertical plate 11.
In this embodiment, fatigue testing machine realizes carrying out fatigue test's purpose to it through the actual operational environment of simulation insulating leading water pipe, and then obtains the relevant quality index of product through the fatigue performance that detects insulating leading water pipe, thereby avoids using unqualified product to cause the pipeline seepage, finally leads to the generator to be burnt out. Specifically, the both ends of the insulating leading water pipe that awaits measuring are passed through the frock and are clamped respectively on vibration support and fixed bolster, low-speed driving motor, the motor drives the reduction gear and rotates, and then it is rotatory to drive the eccentric shaft, the eccentric shaft drives the connecting rod motion again, the one end and the vibration leg joint of connecting rod, finally be reciprocal linear motion by connecting rod drive vibration support on horizontal guiding mechanism and realize the fatigue vibration test to insulating leading water pipe, experimental vibration range is realized through changing the eccentric shaft, when the eccentric amount of eccentric shaft is different, the testing machine is also different to the amplitude of the insulating leading water pipe that awaits measuring. In the test process, the temperature of the insulated water conduit is simulated by adopting an electric heating mode, a special electric heating plate is customized, the temperature is controlled by adopting a temperature controller PID, an external execution element is heated by adopting a solid-state relay, and the temperature error can be effectively controlled within the range of 10 ℃; further, the frequency converter is used for controlling stepless speed regulation of the motor, so that the requirement of vibration frequency required by a test is met; furthermore, the slide block and the linear guide rail form a guide rail pair, two ends of the vibration support are connected with the slide block, and the vibration support makes reciprocating linear motion on the horizontal guide mechanism, so that the horizontal guide mechanism plays a role in guiding and supporting the reciprocating linear motion of the vibration support; furthermore, a special counting and timing module is selected, and the vibration times of the testing machine are displayed by numbers through related proportional conversion. This application except the fatigue test who is used as generator insulation leading water pipe, can also realize the fatigue test of different pipelines through changing different frocks.
Example 2
The embodiment discloses a fatigue testing machine for an insulating water conduit of a generator stator, which comprises a mechanical transmission part and an electrical control part, wherein the mechanical transmission part comprises a motor 1, a speed reducer 2, an eccentric shaft 3, a connecting rod 4, a vibration bracket 5, a fixed bracket 6 and horizontal guide mechanisms 7, and the horizontal guide mechanisms 7 are of two groups; the electric control part comprises a frequency converter 8, a temperature controller 9, a heating plate 10, a relay and a PLC control system.
The motor 1 is connected with the speed reducer 2, one end of the eccentric shaft 3 is connected with an output shaft of the speed reducer 2, the other end of the eccentric shaft is connected with the connecting rod 4, the other end of the connecting rod 4 is connected with the vibration support 5, and two ends of the vibration support 5 are connected with the horizontal guide mechanism 7.
The horizontal guide mechanism 7 comprises a linear guide rail 71 and a sliding block 72, the sliding block 72 is arranged on the linear guide rail 71 in a sliding mode, and the other end of the sliding block 72 is connected with the vibration support 5.
The linear guide 71 is fixed on the base through the vertical plate 11.
The motor 1 is connected with the speed reducer 2 through a coupling 12.
The electric control part also comprises a pulse detection part 13, and the pulse detection part 13 comprises a high-speed pulse sensor 131 arranged on the vertical plate 11 and a pulse generation fluted disc 132 arranged on the coupler 12.
The electrical control portion also includes an alarm 14.
The mechanical transmission part is arranged in the box body 15, and the electrical control part is arranged in the electrical cabinet 16.
The heating plate 10 and the pulse detecting part 15 are disposed in the cabinet 16.
The motor 1 is a variable frequency motor.
In the embodiment, the motor is a variable frequency motor and is connected with the speed reducer through the coupler, so that the motor and the speed reducer are prevented from being separated, and an overload protection effect is also realized; the electric control part further comprises a pulse detection part, wherein the pulse detection part comprises a high-speed pulse sensor arranged on the vertical plate and a pulse generation fluted disc arranged on the coupler, the pulse generation fluted disc is sleeved on the periphery of the coupler, and the high-speed pulse sensor is correspondingly arranged on the vertical plate; furthermore, the electrical control part also comprises an alarm, when the internal temperature of the testing machine is overhigh, an alarm sound is sent out in time to remind an operator, and the testing machine is prevented from being damaged or failed in the experiment due to the out-of-control temperature; further, mechanical transmission part in this application sets up in the box, the electrical control part sets up in the regulator cubicle, whole electrical control part is controlled by PLC control system, hot plate and pulse detection part in the electrical control part set up in the box, the box adopts shaped steel and steel sheet to make up the welding, the postweld annealing response that disappears, then spraying anti-rust primer, the side door on regulator cubicle both sides can be dismantled, be provided with the fan of taking the dust cover on the side door, the fan blows off the wind outside the regulator cubicle, the front end of regulator cubicle is provided with operating panel, the last button that is provided with of operating panel, parts such as display screen and pilot lamp.
In the application, the type of a frequency converter is VFD6800G1R5/G1R5-T4, the type of a temperature control meter is OHR-A300D-15-K4/1/P (24)/-A, the type of an alarm is ND16-22FS, the type of a temperature sensor is PT100, the types of relays are JZX-22F/4Z and CDG1-1DA/40A respectively, the type of a high-speed pulse sensor is SJM12-30N1, and the type of a pulse generation fluted disc is PL-I-100-2.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (10)
1. The utility model provides a fatigue test machine for insulating leading water pipe of generator stator which characterized in that: the device comprises a mechanical transmission part and an electrical control part, wherein the mechanical transmission part comprises a motor (1), a speed reducer (2), an eccentric shaft (3), a connecting rod (4), a vibration bracket (5), a fixed bracket (6) and horizontal guide mechanisms (7), and the horizontal guide mechanisms (7) are of two groups; the electric control part comprises a frequency converter (8), a temperature controller (9), a heating plate (10), a relay and a PLC control system.
2. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 1, is characterized in that: the motor (1) is connected with the speed reducer (2), one end of the eccentric shaft (3) is connected with an output shaft of the speed reducer (2), the other end of the eccentric shaft is connected with the connecting rod (4), the other end of the connecting rod (4) is connected with the vibration support (5), and two ends of the vibration support (5) are further connected with the horizontal guide mechanism (7).
3. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 2, is characterized in that: the horizontal guide mechanism (7) comprises a linear guide rail (71) and a sliding block (72), the sliding block (72) is arranged on the linear guide rail (71) in a sliding mode, and the other end of the sliding block (72) is connected with the vibration support (5).
4. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 3, is characterized in that: the linear guide rail (71) is fixed in the box body (15) through a vertical plate (11).
5. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 4, is characterized in that: the motor (1) is connected with the speed reducer (2) through a coupler (12).
6. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 5, is characterized in that: the electric control part also comprises a pulse detection part (13), and the pulse detection part (13) comprises a high-speed pulse sensor (131) arranged on the vertical plate (11) and a pulse generation fluted disc (132) arranged on the coupler (12).
7. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 1, is characterized in that: the electrical control portion further comprises an alarm (14).
8. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 1, is characterized in that: the mechanical transmission part is arranged in the box body (15), and the electrical control part is arranged in the electrical cabinet (16).
9. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 8, is characterized in that: the heating plate (10) and the pulse detection part (13) are arranged in the box body (15).
10. The fatigue testing machine for the insulated water conduit of the generator stator according to claim 1, is characterized in that: the motor (1) is a variable frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921101548.XU CN210166112U (en) | 2019-07-15 | 2019-07-15 | Fatigue testing machine for generator stator insulation water conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921101548.XU CN210166112U (en) | 2019-07-15 | 2019-07-15 | Fatigue testing machine for generator stator insulation water conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210166112U true CN210166112U (en) | 2020-03-20 |
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ID=69795282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921101548.XU Active CN210166112U (en) | 2019-07-15 | 2019-07-15 | Fatigue testing machine for generator stator insulation water conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210166112U (en) |
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2019
- 2019-07-15 CN CN201921101548.XU patent/CN210166112U/en active Active
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