CN202648934U - Water turbine generator set machinery over-speed device verification platform - Google Patents
Water turbine generator set machinery over-speed device verification platform Download PDFInfo
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- CN202648934U CN202648934U CN2012202746963U CN201220274696U CN202648934U CN 202648934 U CN202648934 U CN 202648934U CN 2012202746963 U CN2012202746963 U CN 2012202746963U CN 201220274696 U CN201220274696 U CN 201220274696U CN 202648934 U CN202648934 U CN 202648934U
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Abstract
The utility model relates to a water turbine generator set and aims to provide a water turbine generator set machinery over-speed device verification platform which can completely simulate operation conditions of a large shaft of a water turbine generator set. A machinery over-speed device is mounted on the platform, so a measuring method is visual, and credibility of a verification result is improved. A structure of the water turbine generator set machinery over-speed device verification platform comprises a platform base, a speed change motor, a rotation shaft and a rotation disc, wherein a bottom end of the rotation shaft is connected with a rotary encoder, the rotation disc is fixed at an upper end of the rotation shaft through a shaft sleeve, the rotation disc is mounted with the machinery over-speed device to be verified, a contact arm and a stroke switch are mounted on the platform foundation at an outer side of the rotation disc, and the contact arm is pulled to move by a spring, can rotate along a contact arm shaft, can constantly keep stability at a normal state and at a motion position and presses the stroke switch to correspondingly be in a press-in state and a pop-out state respectively. The water turbine generator set machinery over-speed device verification platform employs a complete simulation test to obtain an accurate and visual verification result and can display a rotation speed value and a motion rotation speed value of the machinery over-speed device on a display screen in real time; the method is visual; the verification result can be directly obtained; and operation is simple.
Description
Technical field
The utility model relates to the hydraulic generator unit, relates in particular to a kind of hydraulic generator unit machinery overdrive verification platform.
Background technology
Hydraulic generator unit machinery overdrive is widely used in the hydropower unit, it is the important device that ensures unit safety operation, at present, verification machinery overdrive method is computing method, be the pulling force N during the protruding distance L of centrifugal centering block in the measurement mechanical overdrive, calculate the working value of overrunning of mechanical overdrive by N.Adopt computing method measurement mechanical overdrive process complicated, not directly perceived, and the factors such as vibration in the mechanical motion, throw that reckon without are on the impact of mechanical overdrive action accuracy, measurement result has larger error.
The utility model content
Above-mentioned shortcoming for existing method of calibration, the utility model provides a kind of hydraulic generator unit machinery overdrive verification platform, this platform is the operating condition of Simulated Water turbine generator group macro-axis fully, it is directly perceived that mechanical overdrive is installed on the platform measuring method, increases the check results confidence level.
In order to address the above problem, the utility model is achieved through the following technical solutions:
Hydraulic generator unit machinery overdrive verification platform of the present utility model, comprise platform base, change speed motor, rotating shaft and rotating disk, the bottom of described rotating shaft is connected with rotary encoder, be fixed with gearing in the rotating shaft, change speed motor drives rotating shaft by gearing and rotates, described rotating disk is fixed on the upper end of rotating shaft by axle sleeve, described rotating disk is equipped with mechanical overdrive to be verified, platform base in the rotating disk outside is equipped with contact arm and travel switch, this contact arm is spurred and can be rotated along the contact arm axle by spring, all can keep stable in normality and operating position, the travel switch of its compressing respectively correspondence is pressed into and ejects two states.
Further, also comprise a TT﹠C system, described TT﹠C system comprises two single-chip microcomputers, speed regulator and display screen, after the circuit board button sets the magnetic pole logarithm, the first single-chip microcomputer is used for the automatically rotating speed of control rotating disk, second singlechip is used for measuring the rotary encoder pulse, rotation counting value and rotating speed percent value are also showing screen display, when reaching the state of overrunning of design, machinery overdrive action triggers contact arm also drives the travel switch action, travel switch is exported an external interrupt signal to second singlechip, the numerical value of second singlechip record travel switch action also will move tachometer value and percent value thereof and show with flashing mode on display screen, send buzzing and report to the police, automatically cut off simultaneously the change speed motor power supply.
Further, described second singlechip is core controller, utilize interior rotary encoder of counter records unit interval to send umber of pulse, calculating is tried to achieve interior tachometer value of unit interval and is presented at display screen, second singlechip external interrupt mouth monitoring platform contact arm action situation, when contact arm moves, second singlechip record overrun working value and buzzing warning, flickering display.
Further, the built-in normally closed contact of travel switch and a normal opened contact, normally closed contact is connected serially to contactor field coil loop, normal opened contact is connected serially to single-chip microcomputer external interrupt loop, after mechanical overdrive action, contactor disconnects motor power, single-chip microcomputer record tachometer value.
Further, the rotating disk of described platform base is installed balancing weight, and balancing weight is consistent with the weight of mechanical overdrive.
Further, described rotating shaft is provided with bearing seat, is provided with thrust bearing and transverse bearing in the bearing seat, and the relative position that thrust bearing is positioned at transverse bearing can exchange according to actual conditions.
Further, described platform base adopts stainless steel structure.
Further, described gearing comprises chain pitch wheel, and change speed motor is connected with chain pitch wheel by driving chain.
Compared with prior art, the beneficial effects of the utility model are: the verification of the utility model hydraulic generator unit machinery overdrive, complete Simulated Water turbine generator group macro-axis operating condition, TT﹠C system can show real-time rotate speed value and percent value thereof, after the action of overrunning, can show overrun action tachometer value and percent value thereof, report to the police with flicker and buzzing mode simultaneously.
The utility model is simple in structure, easy for installation, and two bearings of rotating shaft do not need to adjust concentricity, and rotating shaft and motor do not need to adjust concentricity yet, and the rotating disk project organization is so that rotating disk has preferably extendability.Duplex bearing is used in rotating shaft, is respectively thrust bearing and transverse bearing, has effectively controlled the throw of rotating, and has born simultaneously the weight of rotating part.Rotating disk is fixed on the rotating shaft upper end, by the protective baffle plate protection, can look at checking procedure straight, has effectively protected again verification safety.Bearing seat adopts one with the Vehicle Processing mode, guarantees the concentricity of two bearings.Use axle sleeve to be connected with rotating shaft topmost, rotating disk and axle sleeve are fixed.Platform base is installed contact arm in the rotating disk outside, and this contact arm is spurred by spring, all can keep stable in normality and operating position, and the travel switch of its compressing respectively correspondence is pressed into and ejects two states.
TT﹠C system of the present utility model, second singlechip is core controller, utilizes interior rotary encoder of counter records unit interval to send umber of pulse, calculates and tries to achieve interior tachometer value of unit interval and be presented at display screen.Single-chip microcomputer external interrupt mouth monitoring platform contact arm action situation, when contact arm move, single-chip microcomputer recorded overrun working value and buzzing warning, flickering display.The built-in normally closed contact of travel switch and a normal opened contact, normally closed contact is connected serially to contactor field coil loop, and normal opened contact is connected serially to single-chip microcomputer external interrupt loop, after mechanical overdrive action, contactor disconnects motor power, single-chip microcomputer record tachometer value.
The utility model adopts and entirely intends true test, and check results accurately, intuitively; Real-time rotate speed value and mechanical overdrive action tachometer value can be presented on the display screen, method is directly perceived, and check results directly reads, and is simple to operate.
Description of drawings
Fig. 1 is the structural representation of the utility model hydraulic generator unit machinery overdrive verification platform;
Fig. 2 is the wiring layout of contact arm structure;
Fig. 3 is the theory diagram of the utility model hydraulic generator unit machinery overdrive verification platform.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As depicted in figs. 1 and 2, a kind of hydraulic generator unit machinery overdrive verification platform, comprise platform base 1, change speed motor 2, rotating shaft 3 and rotating disk 4, the bottom of described rotating shaft 3 is connected with rotary encoder 5, be fixed with chain pitch wheel 6 in the rotating shaft 3, change speed motor 2 is connected with chain pitch wheel 6 by driving chain 7, described rotating disk 4 is fixed on the upper end of rotating shaft 3 by axle sleeve 8, mechanical overdrive 9 to be verified is installed on the rotating disk 4, platform base in rotating disk 4 outsides is equipped with contact arm 10 and travel switch 11, this contact arm 10 is spurred by spring 12 and can rotate along contact arm axle 13, all can keep stable in normality and operating position, the travel switch of its compressing respectively correspondence is pressed into and ejects two states.
As shown in Figure 3, also comprise a TT﹠C system, TT﹠C system comprises single-chip microcomputer, speed regulator and display screen, after setting the magnetic pole logarithm, the first Automatic control of single chip microcomputer speed regulator changes the rotating speed of rotating disk, the second singlechip circuit board is measured the rotary encoder pulse, rotation counting value and rotating speed percent value are also showing screen display, when reaching design when overrunning state, machinery overdrive action triggers contact arm drives the travel switch action, travel switch 11 is exported an external interrupt signal to single-chip microcomputer, single-chip microcomputer operation of recording value also will be moved tachometer value and percent value thereof and show with flashing mode on display screen, send buzzing and report to the police, automatically cut off simultaneously the change speed motor power supply.
Second singlechip is core controller, utilize interior rotary encoder of counter records unit interval to send umber of pulse, calculating is tried to achieve interior tachometer value of unit interval and is presented at display screen, single-chip microcomputer external interrupt mouth monitoring platform contact arm action situation, when contact arm moves, single-chip microcomputer record overrun working value and buzzing warning, flickering display.The built-in normally closed contact of travel switch and a normal opened contact, normally closed contact is connected serially to contactor field coil loop, and normal opened contact is connected serially to single-chip microcomputer external interrupt loop, after mechanical overdrive action, contactor disconnects motor power, single-chip microcomputer record tachometer value.
The rotating disk 4 of platform base is installed balancing weight 14, and balancing weight 14 is consistent with the weight of mechanical overdrive 9.
Rotating shaft 3 is provided with bearing seat 15, is provided with thrust bearing 16 and transverse bearing 17 in the bearing seat 15, and thrust bearing 16 can exchange according to actual conditions with the relative position of transverse bearing 17.
Platform base 1 adopts stainless steel structure.
The verification of the utility model hydraulic generator unit machinery overdrive, complete Simulated Water turbine generator group macro-axis operating condition, TT﹠C system can show real-time rotate speed value and percent value thereof, after the action of overrunning, can show overrun action tachometer value and percent value thereof, report to the police with flicker and buzzing mode simultaneously.Have button on the single chip circuit plate, the generator magnetic pole logarithm can be set as required and automatically calculate hydraulic generator unit rated speed, be used for showing the rotating speed percent value.
The utility model is simple in structure, easy for installation.Two bearings of rotating shaft do not need to adjust concentricity, and rotating shaft and motor do not need to adjust concentricity yet, and the rotating disk project organization is so that rotating disk has preferably extendability.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (8)
1. hydraulic generator unit machinery overdrive verification platform, it is characterized in that: comprise platform base, change speed motor, rotating shaft and rotating disk, the bottom of described rotating shaft is connected with rotary encoder, be fixed with gearing in the rotating shaft, change speed motor drives rotating shaft by gearing and rotates, described rotating disk is fixed on the upper end of rotating shaft by axle sleeve, described rotating disk is equipped with mechanical overdrive to be verified, platform base in the rotating disk outside is equipped with contact arm and travel switch, this contact arm is spurred and can be rotated along the contact arm axle by spring, all can keep stable in normality and operating position, the travel switch of its compressing respectively correspondence is pressed into and ejects two states.
2. hydraulic generator unit according to claim 1 machinery overdrive verification platform, it is characterized in that: also comprise a TT﹠C system, described TT﹠C system comprises two single-chip microcomputers, speed regulator and display screen, after the circuit board button sets the magnetic pole logarithm, the first single-chip microcomputer is used for the automatically rotating speed of control rotating disk, second singlechip is used for measuring the rotary encoder pulse, rotation counting value and rotating speed percent value are also showing screen display, when reaching the state of overrunning of design, machinery overdrive action triggers contact arm also drives the travel switch action, travel switch is exported an external interrupt signal to second singlechip, the numerical value of second singlechip record travel switch action also will move tachometer value and percent value thereof and show with flashing mode on display screen, send buzzing and report to the police, automatically cut off simultaneously the change speed motor power supply.
3. hydraulic generator unit according to claim 2 machinery overdrive verification platform, it is characterized in that: described second singlechip is core controller, utilize interior rotary encoder of counter records unit interval to send umber of pulse, calculating is tried to achieve interior tachometer value of unit interval and is presented at display screen, second singlechip external interrupt mouth monitoring platform contact arm action situation, when contact arm moves, second singlechip record overrun working value and buzzing warning, flickering display.
4. hydraulic generator unit according to claim 1 and 2 machinery overdrive verification platform, it is characterized in that: the built-in normally closed contact of travel switch and a normal opened contact, normally closed contact is connected serially to contactor field coil loop, normal opened contact is connected serially to single-chip microcomputer external interrupt loop, after mechanical overdrive action, contactor disconnects motor power, single-chip microcomputer record tachometer value.
5. hydraulic generator unit according to claim 1 machinery overdrive verification platform, it is characterized in that: the rotating disk of described platform base is installed balancing weight, and balancing weight is consistent with the weight of mechanical overdrive.
6. hydraulic generator unit according to claim 1 machinery overdrive verification platform, it is characterized in that: described rotating shaft is provided with bearing seat, be provided with thrust bearing and transverse bearing in the bearing seat, the relative position that thrust bearing is positioned at transverse bearing can exchange according to actual conditions.
7. hydraulic generator unit machinery overdrive verification platform according to claim 5 is characterized in that: described platform base employing stainless steel structure.
8. hydraulic generator unit according to claim 1 machinery overdrive verification platform, it is characterized in that: described gearing comprises chain pitch wheel, change speed motor is connected with chain pitch wheel by driving chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202746963U CN202648934U (en) | 2012-06-12 | 2012-06-12 | Water turbine generator set machinery over-speed device verification platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202746963U CN202648934U (en) | 2012-06-12 | 2012-06-12 | Water turbine generator set machinery over-speed device verification platform |
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| Publication Number | Publication Date |
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| CN202648934U true CN202648934U (en) | 2013-01-02 |
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| CN2012202746963U Expired - Fee Related CN202648934U (en) | 2012-06-12 | 2012-06-12 | Water turbine generator set machinery over-speed device verification platform |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196664A (en) * | 2013-03-22 | 2013-07-10 | 四川中鼎自动控制有限公司 | Hydraulic power plant mechanical hydraulic pressure over-speed protection device simulation test platform and test method |
| CN105181323A (en) * | 2015-10-12 | 2015-12-23 | 哈尔滨电机厂有限责任公司 | Experimental method for simulating maximum number of start and stop times borne by magnet yoke magnetic pole of hydraulic generator |
| CN106887703A (en) * | 2017-03-23 | 2017-06-23 | 合肥开泰机电科技有限公司 | A kind of 5 meters of antenna rotating platforms |
| CN107192543A (en) * | 2017-05-24 | 2017-09-22 | 苏州瑞美科材料科技有限公司 | A kind of rotary test device |
-
2012
- 2012-06-12 CN CN2012202746963U patent/CN202648934U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196664A (en) * | 2013-03-22 | 2013-07-10 | 四川中鼎自动控制有限公司 | Hydraulic power plant mechanical hydraulic pressure over-speed protection device simulation test platform and test method |
| CN103196664B (en) * | 2013-03-22 | 2015-06-10 | 四川中鼎自动控制有限公司 | Hydraulic power plant mechanical hydraulic pressure over-speed protection device simulation test platform and test method |
| CN105181323A (en) * | 2015-10-12 | 2015-12-23 | 哈尔滨电机厂有限责任公司 | Experimental method for simulating maximum number of start and stop times borne by magnet yoke magnetic pole of hydraulic generator |
| CN106887703A (en) * | 2017-03-23 | 2017-06-23 | 合肥开泰机电科技有限公司 | A kind of 5 meters of antenna rotating platforms |
| CN107192543A (en) * | 2017-05-24 | 2017-09-22 | 苏州瑞美科材料科技有限公司 | A kind of rotary test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |