CN210834178U - Creep monitoring and alarming device for hydroelectric generating set - Google Patents
Creep monitoring and alarming device for hydroelectric generating set Download PDFInfo
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- CN210834178U CN210834178U CN201921891909.5U CN201921891909U CN210834178U CN 210834178 U CN210834178 U CN 210834178U CN 201921891909 U CN201921891909 U CN 201921891909U CN 210834178 U CN210834178 U CN 210834178U
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Abstract
The utility model discloses a creep monitoring and alarming device of a hydroelectric generating set, which comprises a supporting plate, a measuring plate, a cylinder I, a displacement meter and a plc control system; the measuring plate is positioned in the middle of the supporting plate and can slide along the central axis of the supporting plate; the air cylinder I is positioned on one side of the measuring plate and is fixedly arranged on the supporting plate, and a clamping groove is formed in the position, corresponding to the air cylinder I, of the measuring plate; the displacement meter comprises an inductor and an induction sheet, the induction sheet is arranged on one side of the measuring plate, and the inductor corresponds to the induction sheet and is fixedly arranged on the supporting plate; the supporting device is characterized in that supporting legs are arranged on two sides of one end of the supporting plate respectively and hinged to the supporting plate, an air cylinder II is arranged below the other end of the supporting plate, and the top of a push rod of the air cylinder II is fixedly connected with the supporting plate. The utility model discloses the water turbine axle of detectable equidimension not, simple structure easily installs, and it is high to detect the precision.
Description
Technical Field
The utility model relates to a hydroelectric set wriggling monitoring alarm device belongs to hydroelectric set measuring device technical field.
Background
Under the hydraulic turbine unit shut down quiescent condition, ball valve and stator have closed completely in theory, and the rotor stops on certain position, actually because there is the error in the machining precision and the installation of ball valve and stator, ball valve and stator can make hydraulic turbine unit have the leakage, and then lead to the hydraulic turbine to take place the wriggling phenomenon. If the shunt running of the unit cannot be captured in time and braking measures are taken, the unit can inevitably rotate at a low speed for a long time to burn out bearing bushes, so that the safe and normal operation of the unit is influenced.
Traditional pneumatic drive wriggling monitoring devices, the installation is complicated, has the risk scheduling problem that gas leakage, hairpin etc. arouse wriggling monitoring devices to destroy, and the maintenance work volume is big moreover. The traditional non-contact wriggling monitoring device coats black and white stripes on a fluted disc, when a unit wriggles, a photoelectric sensor measures the rotation angle of a large shaft by monitoring how many black and white stripes rotate, the method has low precision and poor manufacturability, and the photoelectric sensor needs to be maintained frequently. On the other hand, holes are punched on the steel strip and are monitored by the eddy current sensor, the method also has higher requirement on the machining precision of the holes on the steel strip, and the eddy current sensor is easily interfered by surrounding electromagnetic signals to avoid action. When the large shaft of the water turbine is small, the fluted disc arranged on the large shaft and the steel belt clasped on the large shaft are also small. In this case, a lot of black and white channels or holes are processed on the small fluted disc and the small steel belt, which is difficult to process and expensive.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough of existence among the prior art, provide an installation simple, detect the precision high, difficult hairpin and adapt to multiple hydraulic generator's wriggling monitoring devices.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a creep monitoring and alarming device of a hydroelectric generating set comprises a supporting plate, a measuring plate, a cylinder I, a displacement meter and a plc control system; the measuring plate is positioned in the middle of the supporting plate and can slide along the central axis of the supporting plate; the cylinder I is positioned on one side of the measuring plate and is fixedly installed on the supporting plate, a clamping groove is formed in the position, corresponding to the cylinder I, of the measuring plate, and when the hydroelectric generating set creep monitoring alarm device is turned off, a push rod of the cylinder I extends into the clamping groove to fix the measuring plate; the displacement meter comprises an inductor and an induction sheet, the induction sheet is arranged on one side of the measuring plate, and the inductor corresponds to the induction sheet and is fixedly arranged on the supporting plate; two sides of one end of the supporting plate are respectively provided with a supporting leg, an air cylinder II is arranged below the other end of the supporting plate, the supporting legs are hinged with the supporting plate, and the top of a push rod of the air cylinder II is fixedly connected with the supporting plate; two ends of one side of the measuring plate are respectively provided with a spring, and the springs are obliquely and fixedly connected between the supporting plate and the measuring plate; and the cylinder I, the cylinder II and the inductor are respectively connected with a plc control system through leads.
Further optimizing, hydroelectric set wriggling monitoring alarm device still includes the friction cover, the fixed cover of friction cover is on hydroelectric set's motor shaft. The friction sleeve can protect the motor shaft to wear when contacting with the measured value on the one hand, and the friction sleeve can increase and measure the frictional force of board simultaneously, improves the measurement sensitivity who measures the board.
Further preferably, the supporting plate is provided with a plurality of sliding rails, and the bottom of the measuring plate is provided with sliding rail grooves corresponding to the sliding rails one to one. Through the cooperation of slide rail and slide rail groove, the measuring board that can make slides according to the fixed track, does not take place lateral shifting, guarantees not to appear the error among the monitoring process.
Further preferably, a groove is formed in the middle of the supporting plate, and the measuring plate is partially embedded into the groove. The groove can fix the measuring plate, so that the measuring plate cannot be separated and deviate from a sliding track, and the monitoring accuracy is influenced.
Further preferably, the bottom surface of the groove is provided with a plurality of slide rails, and the bottom of the measuring plate is provided with slide rail grooves corresponding to the slide rails one to one.
The working principle of the creep monitoring and alarming device of the hydroelectric generating set is as follows:
the creep monitoring and alarming device of the water turbine generator set is arranged at the lower position of a motor shaft, and a supporting leg and an air cylinder II are fixed at the same time; before monitoring, a push rod of the air cylinder I extends into the clamping groove, and the measuring plate is fixed so as not to slide; during monitoring, firstly, a starting signal is input into a plc control system, then the plc control system starts an air cylinder II to move one end of a measuring plate upwards, and the other end of the measuring plate rotates around a supporting leg, so that the measuring plate is attached to a motor shaft, then the plc control system starts an air cylinder I to withdraw a push rod of the air cylinder I from a clamping groove, the measuring plate is loosened, when the motor shaft wriggles, the measuring plate can be driven to slide on a supporting plate to generate displacement, at the moment, a sensor of a displacement meter detects the displacement of an induction piece and sends a signal to the plc control system, and when the displacement of the displacement measuring plate exceeds a preset value, the plc control system sends a prompt alarm; after the monitoring, to plc control system input closing signal, plc control system actuating cylinder II descends the push rod of cylinder II and will measure the board and draw to initial position, at the in-process that descends, measures the board and resets under the effect of spring, after measuring the board and replying original position, plc control system actuating cylinder I will measure the board fixedly in stretching into the draw-in groove with the push rod of cylinder I.
Compared with the prior art, the technical scheme has the following beneficial effects:
the utility model discloses a will measure board and motor shaft contact, if the motor shaft takes place the wriggling and just can drive and measure the board and move, and then monitor the removal of measuring the board through the displacement meter, can monitor the wriggling of motor shaft in time and send out the suggestion alarm, moreover the utility model discloses a monitoring precision is high, and the reaction is sensitive, adopts friction cover contact measuring board can effectively avoid measuring board and motor shaft not synchronous motion because of friction is not enough simultaneously, from influencing the accuracy of monitoring; the utility model discloses simple structure, installation and easy maintenance can also be suitable for the motor shaft of equidimension not.
Drawings
Fig. 1 is a schematic structural view of the creep monitoring and alarming device of the hydroelectric generating set in this embodiment 1.
Fig. 2 is a schematic sectional structure view of the monitoring and alarming device for the creep of the hydroelectric generating set in this embodiment 1.
Fig. 3 is a schematic side view of the monitoring and alarming device for the creep of the hydroelectric generating set in this embodiment 1.
Fig. 4 is a schematic structural view of the creep monitoring and alarming device of the hydroelectric generating set in this embodiment 2.
Fig. 5 is a schematic structural view of the creep monitoring and alarming device of the hydroelectric generating set in this embodiment 3.
Reference numerals: 1-motor shaft, 2-supporting plate, 3-measuring plate, 4-cylinder I, 5-inductor, 6-cylinder II, 7-spring, 8-induction sheet, 9-plc control system, 10-supporting leg, 11-friction sleeve and 12-sliding rail.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited to the examples. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.
Example 1:
a creep monitoring and alarming device of a hydroelectric generating set comprises a supporting plate 2, a measuring plate 3, a cylinder I4, a displacement meter and a plc control system 9; a groove is formed in the middle of the supporting plate 2, and the measuring plate 3 is partially embedded into the groove; two sliding rails 12 are arranged on the bottom surface of the groove, sliding rail grooves corresponding to the sliding rails 12 one by one are formed in the bottom of the measuring plate 3, and the measuring plate 3 can slide along the central axis of the supporting plate 2; the cylinder I4 is positioned on one side of the measuring plate 3 and is fixedly installed on the supporting plate 2, a clamping groove is formed in the position, corresponding to the cylinder I4, of the measuring plate 3, and when the creep monitoring alarm device of the water-turbine generator set is turned off, a push rod of the cylinder I4 extends into the clamping groove to fix the measuring plate 3; the displacement meter comprises an inductor 5 and an induction sheet 8, the induction sheet 8 is arranged on one side of the measuring plate 3, and the inductor 5 corresponds to the induction sheet 8 and is fixedly arranged on the supporting plate 2; two sides of one end of the supporting plate 2 are respectively provided with a supporting leg 10, an air cylinder II 6 is arranged below the other end of the supporting plate 2, the supporting legs 10 are hinged with the supporting plate 2, and the top of a push rod of the air cylinder II 6 is fixedly connected with the supporting plate 2; two ends of one side of the measuring plate 3 are respectively provided with a spring 7, and the springs 7 are obliquely and fixedly connected between the supporting plate 2 and the measuring plate 3; the cylinder I4, the cylinder II 6 and the inductor 5 are respectively connected with a plc control system 9 through leads; the creep monitoring and alarming device of the water turbine generator set further comprises a friction sleeve 11, and the friction sleeve 11 is fixedly sleeved on a motor shaft 1 of the water turbine generator set.
The working principle of the peristaltic monitoring and alarming device of the hydroelectric generating set is as follows:
the creep monitoring and alarming device of the water turbine generator set is arranged at the lower position of a motor shaft 1, and a supporting leg 10 and an air cylinder II 6 are fixed at the same time; before monitoring, a push rod of the air cylinder I4 extends into the clamping groove, and the measuring plate 3 is fixed and cannot slide; during monitoring, firstly, a starting signal is input into a plc control system 9, then the plc control system 9 starts an air cylinder II 6 to move one end of a measuring plate 3 upwards, meanwhile, the other end of the measuring plate 3 rotates around a supporting leg 10, so that the measuring plate 3 is tightly attached to a motor shaft 1, then the plc control system 9 starts an air cylinder I4 to withdraw a push rod of the air cylinder I4 from a clamping groove, the measuring plate 3 is loosened, when the motor shaft 1 creeps, the measuring plate 3 can be driven to slide in a groove of a supporting plate 2 to generate displacement, at the moment, an inductor 5 of a displacement meter detects the displacement of an induction sheet 8 and sends a signal to the plc control system 9, and when the displacement of the position measuring plate 3 exceeds a preset value, the plc control system 9 sends a prompt alarm; after the monitoring, to plc control system 9 input closing signal, plc control system 9 starts II 6 of cylinder and descends the push rod of II 6 of cylinder and will measure board 3 and draw to initial position, at the in-process that descends, measures board 3 and resets under the effect of spring 7, after measuring board 3 and replying original position, plc control system 9 starts I4 of cylinder and stretches into the draw-in groove with the push rod of I4 of cylinder and in will measuring board 3 fixed.
Example 2:
a creep monitoring and alarming device of a hydroelectric generating set comprises a supporting plate 2, a measuring plate 3, a cylinder I4, a displacement meter and a plc control system 9; a sliding rail 12 is arranged in the middle of the supporting plate 2, sliding rail grooves corresponding to the sliding rails 12 one by one are formed in the bottom of the measuring plate 3, and the measuring plate 3 can slide along the central axis of the supporting plate 2; the cylinder I4 is positioned on one side of the measuring plate 3 and is fixedly installed on the supporting plate 2, a clamping groove is formed in the position, corresponding to the cylinder I4, of the measuring plate 3, and when the creep monitoring alarm device of the water-turbine generator set is turned off, a push rod of the cylinder I4 extends into the clamping groove to fix the measuring plate 3; the displacement meter comprises an inductor 5 and an induction sheet 8, the induction sheet 8 is arranged on one side of the measuring plate 3, and the inductor 5 corresponds to the induction sheet 8 and is fixedly arranged on the supporting plate 2; two sides of one end of the supporting plate 2 are respectively provided with a supporting leg 10, an air cylinder II 6 is arranged below the other end of the supporting plate 2, the supporting legs 10 are hinged with the supporting plate 2, and the top of a push rod of the air cylinder II 6 is fixedly connected with the supporting plate 2; two ends of one side of the measuring plate 3 are respectively provided with a spring 7, and the springs 7 are obliquely and fixedly connected between the supporting plate 2 and the measuring plate 3; the cylinder I4, the cylinder II 6 and the inductor 5 are respectively connected with a plc control system 9 through leads; the creep monitoring and alarming device of the water turbine generator set further comprises a friction sleeve 11, and the friction sleeve 11 is fixedly sleeved on a motor shaft 1 of the water turbine generator set.
The working principle of the peristaltic monitoring and alarming device of the hydroelectric generating set is as follows:
the creep monitoring and alarming device of the water turbine generator set is arranged at the lower position of a motor shaft 1, and a supporting leg 10 and an air cylinder II 6 are fixed at the same time; before monitoring, a push rod of the air cylinder I4 extends into the clamping groove, and the measuring plate 3 is fixed and cannot slide; during monitoring, firstly, a starting signal is input into a plc control system 9, then the plc control system 9 starts an air cylinder II 6 to move one end of a measuring plate 3 upwards, meanwhile, the other end of the measuring plate 3 rotates around a supporting leg 10, so that the measuring plate 3 is tightly attached to a motor shaft 1, then the plc control system 9 starts an air cylinder I4 to withdraw a push rod of the air cylinder I4 from a clamping groove, the measuring plate 3 is loosened, when the motor shaft 1 creeps, the measuring plate 3 can be driven to slide on the supporting plate 2 to generate displacement, at the moment, an inductor 5 of a displacement meter detects the displacement of an induction sheet 8 and sends a signal to the plc control system 9, and when the displacement of the position measuring plate 3 exceeds a preset value, the plc control system 9 sends a prompt alarm; after the monitoring, to plc control system 9 input closing signal, plc control system 9 starts II 6 of cylinder and descends the push rod of II 6 of cylinder and will measure board 3 and draw to initial position, at the in-process that descends, measures board 3 and resets under the effect of spring 7, after measuring board 3 and replying original position, plc control system 9 starts I4 of cylinder and stretches into the draw-in groove with the push rod of I4 of cylinder and in will measuring board 3 fixed.
Example 3:
a creep monitoring and alarming device of a hydroelectric generating set comprises a supporting plate 2, a measuring plate 3, a cylinder I4, a displacement meter and a plc control system 9; a groove is formed in the middle of the supporting plate 2, the measuring plate 3 is partially embedded into the groove, and the measuring plate 3 can slide along the central axis of the supporting plate 2; the cylinder I4 is positioned on one side of the measuring plate 3 and is fixedly installed on the supporting plate 2, a clamping groove is formed in the position, corresponding to the cylinder I4, of the measuring plate 3, and when the creep monitoring alarm device of the water-turbine generator set is turned off, a push rod of the cylinder I4 extends into the clamping groove to fix the measuring plate 3; the displacement meter comprises an inductor 5 and an induction sheet 8, the induction sheet 8 is arranged on one side of the measuring plate 3, and the inductor 5 corresponds to the induction sheet 8 and is fixedly arranged on the supporting plate 2; two sides of one end of the supporting plate 2 are respectively provided with a supporting leg 10, an air cylinder II 6 is arranged below the other end of the supporting plate 2, the supporting legs 10 are hinged with the supporting plate 2, and the top of a push rod of the air cylinder II 6 is fixedly connected with the supporting plate 2; two ends of one side of the measuring plate 3 are respectively provided with a spring 7, and the springs 7 are obliquely and fixedly connected between the supporting plate 2 and the measuring plate 3; and the air cylinder I4, the air cylinder II 6 and the inductor 5 are respectively connected with a plc control system 9 through leads.
The working principle of the peristaltic monitoring and alarming device of the hydroelectric generating set is as follows:
the creep monitoring and alarming device of the water turbine generator set is arranged at the lower position of a motor shaft 1, and a supporting leg 10 and an air cylinder II 6 are fixed at the same time; before monitoring, a push rod of the air cylinder I4 extends into the clamping groove, and the measuring plate 3 is fixed and cannot slide; during monitoring, firstly, a starting signal is input into a plc control system 9, then the plc control system 9 starts an air cylinder II 6 to move one end of a measuring plate 3 upwards, meanwhile, the other end of the measuring plate 3 rotates around a supporting leg 10, so that the measuring plate 3 is tightly attached to a motor shaft 1, then the plc control system 9 starts an air cylinder I4 to withdraw a push rod of the air cylinder I4 from a clamping groove, the measuring plate 3 is loosened, when the motor shaft 1 creeps, the measuring plate 3 can be driven to slide in a groove of a supporting plate 2 to generate displacement, at the moment, an inductor 5 of a displacement meter detects the displacement of an induction sheet 8 and sends a signal to the plc control system 9, and when the displacement of the position measuring plate 3 exceeds a preset value, the plc control system 9 sends a prompt alarm; after the monitoring, to plc control system 9 input closing signal, plc control system 9 starts II 6 of cylinder and descends the push rod of II 6 of cylinder and will measure board 3 and draw to initial position, at the in-process that descends, measures board 3 and resets under the effect of spring 7, after measuring board 3 and replying original position, plc control system 9 starts I4 of cylinder and stretches into the draw-in groove with the push rod of I4 of cylinder and in will measuring board 3 fixed.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (5)
1. The utility model provides a hydroelectric set wriggling monitoring alarm device which characterized in that: comprises a supporting plate (2), a measuring plate (3), a cylinder I (4), a displacement meter and a plc control system (9); the measuring plate (3) is positioned in the middle of the supporting plate (2) and can slide along the central axis of the supporting plate (2); the cylinder I (4) is located on one side of the measuring plate (3) and is fixedly installed on the supporting plate (2), a clamping groove is formed in the position, corresponding to the cylinder I (4), of the measuring plate (3), and when the water-turbine generator set creep monitoring alarm device is turned off, a push rod of the cylinder I (4) extends into the clamping groove to fix the measuring plate (3); the displacement meter comprises an inductor (5) and an induction sheet (8), the induction sheet (8) is arranged on one side of the measuring plate (3), and the inductor (5) corresponds to the induction sheet (8) and is fixedly arranged on the supporting plate (2); two supporting feet (10) are respectively arranged on two sides of one end of the supporting plate (2), an air cylinder II (6) is arranged below the other end of the supporting plate (2), the supporting feet (10) are hinged to the supporting plate (2), and the top of a push rod of the air cylinder II (6) is fixedly connected with the supporting plate (2); two ends of one side of the measuring plate (3) are respectively provided with a spring (7), and the springs (7) are obliquely and fixedly connected between the supporting plate (2) and the measuring plate (3); and the cylinder I (4), the cylinder II (6) and the inductor (5) are respectively connected with a plc control system (9) through leads.
2. The monitoring and alarming device for the peristalsis of the hydroelectric generating set according to claim 1, characterized in that: the creep monitoring and alarming device of the water turbine generator set further comprises a friction sleeve (11), and the friction sleeve (11) is fixedly sleeved on a motor shaft (1) of the water turbine generator set.
3. The creep monitoring and alarming device of the hydroelectric generating set according to claim 1 or 2, characterized in that: the device is characterized in that a plurality of sliding rails (12) are arranged on the supporting plate (2), and sliding rail grooves which correspond to the sliding rails (12) one to one are formed in the bottom of the measuring plate (3).
4. The creep monitoring and alarming device of the hydroelectric generating set according to claim 1 or 2, characterized in that: the middle part of the supporting plate (2) is provided with a groove, and the measuring plate (3) is partially embedded into the groove.
5. The monitoring and alarming device for the peristalsis of the hydroelectric generating set according to claim 4, characterized in that: the bottom surface of the groove is provided with a plurality of sliding rails (12), and the bottom of the measuring plate (3) is provided with sliding rail grooves which correspond to the sliding rails (12) one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921891909.5U CN210834178U (en) | 2019-11-05 | 2019-11-05 | Creep monitoring and alarming device for hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921891909.5U CN210834178U (en) | 2019-11-05 | 2019-11-05 | Creep monitoring and alarming device for hydroelectric generating set |
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| Publication Number | Publication Date |
|---|---|
| CN210834178U true CN210834178U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921891909.5U Active CN210834178U (en) | 2019-11-05 | 2019-11-05 | Creep monitoring and alarming device for hydroelectric generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689288A (en) * | 2022-03-09 | 2022-07-01 | 中国长江电力股份有限公司 | System and method for monitoring and measuring creep of hydraulic generator by using image |
-
2019
- 2019-11-05 CN CN201921891909.5U patent/CN210834178U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689288A (en) * | 2022-03-09 | 2022-07-01 | 中国长江电力股份有限公司 | System and method for monitoring and measuring creep of hydraulic generator by using image |
| CN114689288B (en) * | 2022-03-09 | 2023-06-13 | 中国长江电力股份有限公司 | System and method for measuring peristaltic movement of hydraulic generator by utilizing image monitoring |
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