CN201740038U - Chain industrial boiler fire grate speed regulator dynamic real time torque detection protection device - Google Patents
Chain industrial boiler fire grate speed regulator dynamic real time torque detection protection device Download PDFInfo
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- CN201740038U CN201740038U CN2010202311816U CN201020231181U CN201740038U CN 201740038 U CN201740038 U CN 201740038U CN 2010202311816 U CN2010202311816 U CN 2010202311816U CN 201020231181 U CN201020231181 U CN 201020231181U CN 201740038 U CN201740038 U CN 201740038U
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- fire grate
- grate speed
- dynamic real
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Abstract
The utility model relates to a chain industrial boiler fire grate speed regulator dynamic real time torque detection protection device comprising a moment sensor and an observe and control circuit. When the speed regulator is detected, the angle signal can be used to show the torque size by the moment sensor, thereby a sector blade is disposed on each of the main shaft and driven shaft of the speed regulator, and the two sector blades are mechanically designed to be parallel to each other and have the same axes, in addition, the two shafts are connected together by a spring. When the moment exists on a transmission shaft, the two blades have an angular displacement, and the size of the angular displacement can reflect the size of the moment. By detecting the rotating status of shaft of the fire grate speed regulator through an infrared receiving tube and an infrared light-emitting diode disposed on two sides of the sector blades, the operation data can be detected and protected in real time, the circuit can be observed, controlled and analyzed. By using the utility model, the data can be accurately protected, the grave accidents can be prevented, the losses of faults caused by overload can be reduced, the operation can be simplified, and the operation efficiency of system can be improved.
Description
Technical field
The utility model belongs to Industrial Boiler safeguard protection field, relates to a kind of speed regulator protective device, especially a kind of dynamic real-time torque detection protective device that is applicable to chain industry boiler fire grate speed regulator.
Background technology
At present; domestic protection to chain industry boiler fire grate speed regulator has only two kinds of safeguard measures; these only two kinds of safeguard measures all are confined to adopt the method for mechanical protection; specific as follows: 1) pin key Protection Code: as also to be the main at present a kind of method that adopts; when the torque on the speed regulator power transmission shaft surpasses the shear strength of pin key; connection pin key between driving shaft and the driven shaft is cut off, thereby cuts off driving-chain.
2) stepped tooth clutch Protection Code: throw-out-of clutch when the torque on the speed regulator power transmission shaft surpasses the adhesion of stepped tooth clutch, cut off driving-chain.
More than two kinds of safeguard measures can only play a protective role, the test less than any data.And the torque settings error is bigger, and safety coefficient is relatively low.
The utility model content
The purpose of this utility model is to overcome and detects the not real-time data that detect of protective device in the above-mentioned prior art; error is bigger; shortcomings such as salvo is single; provide a kind of chain industry boiler fire grate speed regulator dynamic real-time torque to detect protective device, this device is a kind of intelligent detection, protective device, can detect service data in real time; save historical data; and analyze according to detecting data, take the corresponding protection measure, it can improve the safe operation coefficient of boiler plant greatly.
The purpose of this utility model solves by the following technical programs: this chain industry boiler fire grate speed regulator dynamic real-time torque detects protective device, comprise torque sensor and telemetry circuit, it is characterized in that: described torque sensor comprises that sensor mechanical part and sensor circuit partly form, described sensor mechanical part comprises driving shaft and driven shaft, described driving shaft and driven shaft coaxial and the two between be connected with elastic parts, on the two adjacent axle heads of described driving shaft and driven shaft a slice sector is installed respectively, these two sectors are parallel to each other and concentric is formed the sector group; Described sensor circuit partly comprises infrared receiving tube and infrarede emitting diode, the relative respectively both sides of being located at described sector group with infrarede emitting diode of infrared receiving tube; The colelctor electrode of described infrared receiving tube is connected with power supply by resistance, the grounded emitter of infrared receiving tube, and the colelctor electrode of infrared receiving tube is connected with telemetry circuit as the output of torque sensor; The input of described infrarede emitting diode is connected on the power supply by resistance; Described telemetry circuit is the control core with the microprocessor.
Above-mentioned elastic parts is that two ends are connected to the spring on driving shaft and the driven shaft.
Above-mentioned telemetry circuit comprises microprocessor module and the dtc signal input circuit that is connected with this microprocessor module, output control module, human-computer interface module, calendar clock module, memory module, alarm module and communication module; The input of described dtc signal input circuit is connected with the output of torque sensor; The driving shaft of described torque sensor is installed in the rotating shaft of fire grate speed regulator.
Above-mentioned dtc signal input circuit comprises first and second reverse Schmidt trigger, input resistance and electric capacity, and the described first and second reverse Schmidt triggers are connected mutually; The input of the first reverse Schmidt trigger is connected with an end of electric capacity and input resistance respectively, the other end ground connection of described electric capacity, and the other end of described input resistance is connected to the torque signals output of torque sensor; The output of the other first and second reverse Schmidt triggers is connected respectively on the microprocessor module.
Above-mentioned output control module is a relay.
Above-mentioned telemetry circuit also is included as the power module of each module for power supply.
Above-mentioned human-computer interface module comprises display module and Keysheet module, and described display module is a LCD.
Above-mentioned microprocessor module is AT89S52.
Above-mentioned calendar clock module is PCF8563; Described memory module is X25045.
When the utility model detected speed regulator, the size of torque embodied with angle signal, promptly respectively adorned a sector on the driving shaft of speed regulator and driven shaft, made this two parallel, concentrics of sector in Machine Design.Two between centers adopt spring part to connect.When having moment to produce on the power transmission shaft, two blades just produce angular displacement, and the size of angular displacement has also just reflected the size of moment.Infrared receiving tube by being in sector group both sides and infrarede emitting diode are measured the axle rotary state of fire grate speed regulator; it detects protection by detecting service data in real time; and telemetry circuit is analyzed; can protect accurately in real time; avoid the appearance of major accident, reduce the loss of breaking down and bringing because of overload.Also removed maintenance procedures such as changing pin in the additive method (as the pin key Protection Code) simultaneously from, handled easily has improved the operational efficiency of system.
Description of drawings
Fig. 1 is a telemetry circuit block diagram of the present utility model; Fig. 2 is the utility model sensor mechanical part structural representation; Fig. 3 is the side view of Fig. 2; Fig. 4 is a circuit connection diagram of the present utility model.
Wherein: 1 is microprocessor module; 2 is the calendar clock module; 3 is memory module; 4 is alarm module; 5 is communication module; 6 is display module; 7 is Keysheet module; 8 is the dtc signal input circuit; 9 is output control module; 10 is the sensor circuit part; 11 is power module; 12 is driving shaft; 13 is driven shaft; 14 is sector; 15 is elastic parts.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail: chain industry boiler fire grate speed regulator dynamic real-time torque of the present utility model detects protective device; comprise torque sensor and telemetry circuit, wherein torque sensor comprises sensor mechanical part and sensor circuit part 10 compositions.Referring to Fig. 2 and Fig. 3, the sensor mechanical part comprises driving shaft 12 and driven shaft 13, driving shaft 12 and driven shaft 13 coaxial and the two between be connected with elastic parts 15, on the two adjacent axle heads of driving shaft 12 and driven shaft 13 a slice sector 14 is installed respectively, these two sectors 14 are parallel to each other and concentric is formed the sector group.Referring to Fig. 4, sensor circuit part 10 comprises infrared receiving tube Q1 and infrarede emitting diode D4, the relative respectively both sides of being located at described sector group with infrarede emitting diode D4 of infrared receiving tube Q1; The colelctor electrode of infrared receiving tube Q1 is connected with power supply by resistance, the grounded emitter of infrared receiving tube Q1, and the colelctor electrode of infrared receiving tube Q1 is connected with telemetry circuit as the output of torque sensor; The input of infrarede emitting diode D4 is connected on the power supply by resistance.Elastic parts 15 can adopt two ends to be connected to spring on driving shaft and the driven shaft in the utility model.
Referring to Fig. 1 and Fig. 4, telemetry circuit of the present utility model is the control core with the microprocessor.This telemetry circuit comprises microprocessor module 1 and the dtc signal input circuit 8 that is connected with this microprocessor module 1, output control module 9, human-computer interface module, calendar clock module 2, memory module 3, alarm module 4 and communication module 5.This telemetry circuit also is included as the power module 11 of each module for power supply in addition.The input of dtc signal input circuit 8 is connected with the output of torque sensor; The driving shaft 12 of torque sensor is installed in the rotating shaft of fire grate speed regulator.Described dtc signal input circuit 8 comprises that first and second reverse Schmidt trigger U6D, U6E, input resistance R8 and capacitor C 17, the first and second reverse Schmidt trigger U6D, U6E connect mutually; The input of the first reverse Schmidt trigger U6D is connected with the end of capacitor C 17 and input resistance R8 respectively, the other end ground connection of capacitor C 17, and the other end of input resistance R8 is connected to the torque signals output of torque sensor; The output of other first and second reverse Schmidt trigger U6D, U6E is connected respectively on the microprocessor module 1.
Above-described output control module 9 can be selected a relay, and this relay is connected on the power circuit of fire grate speed regulator and protects speed regulator with the break-make power supply.Above human-computer interface module comprises display module 6 and Keysheet module 7, and wherein display module is a LCD.
In preferred version of the present utility model, described microprocessor module 1 is selected AT89S52.Described calendar clock module 2 is selected PCF8563; Described memory module 3 is selected X25045.
Below introduce operation principle of the present utility model in detail: the utility model mainly is made up of moment detection part (torque sensor) and telemetry circuit two large divisions.Torque sensor is made of driving shaft and driven shaft and the elastic parts that connects the two, in the power transmission shaft operation process, the size decision driving shaft of driving torque and the size of the relative angular displacement that driven shaft produces can detect the size of transmitting moment of torsion by the measured angular displacement.The size of torque (angular displacement) is the signal of telecommunication by conversion of photoelectric sensor; delivering to telemetry circuit detects, calculates, judges; when torque surpasses setting value; analyze according to the expectant control strategy; the output control signal; cut off motor power and warning, with protection boiler grate and speed regulator.
The generation of angular displacement is by a sector being installed respectively on the driven shaft of initiatively advocating peace, being made this two parallel, concentrics of sector in Machine Design.When having moment to produce on the power transmission shaft, two blades just produce angular displacement, and the size of angular displacement has also just reflected the size of moment.
Telemetry circuit of the present utility model has following function: 1) Presentation Function system energising back is under the situation of on-keyboard input, digital screen (LCDs) directly shows moment, unit is N/m, also can show history demonstration, Adjustment System clock by keyboard operation.
2) in protection over time limit and warning function speed regulator when running, is if moment exceeds and then carries out display alarm and audible alarm in limited time immediately.Exceed the upper limit 10% and begin the timing of transfiniting, implement the shutdown protection when timing surpasses setting value.Timing and protection are according to the inverse time lag rule, and promptly the big more continuous working period of overload is short more.As: operation protection in 40 minutes when moment exceeds 10%, moment exceeds operation in 20% o'clock protection in 30 minutes, and moment exceeds operation in 30% o'clock protection in 20 minutes, and moment exceeds operation in 40% o'clock protection in 10 minutes, and moment exceeds at 50% o'clock and protects immediately.When transfiniting timing moment of resistance fluctuation during this period of time, it (10% is the timing standard to transfinite promptly that timing is carried out according to the method for the proportion weighted that transfinites, if transfinite 40% o'clock then timing multiply by 4,3 mode timing is multiply by in 30% timing if transfinite), transfinite timing not then moment values return to the timer zero clearing of then transfiniting in the normal range (NR).
3) moment and time hold function transfinite and implement the shutdown protection when timing reaches setting value during stoppage protection, and the instantaneous moment values before shutting down and the time of generation are preserved, so that do accident analysis, the record content comprises date, time, torque value.Can show 10 failure loggings that inquiry system is preserved recently.
4) can execute by executing key behind the enforcement function system-down, the compulsory execution time is by default.
5) to the time and query function check and correction calendar clock, inquiry shutdown protection record.
The utility model adopts photoelectric device to measure the torque of speed regulator.When speed regulator rotates, sector 14 periodically passes through between infrared tube (infrared receiving tube Q1 and infrarede emitting diode D4), block infrared light, produce square-wave signal simultaneously at the colelctor electrode C of infrared receiving tube Q1 point place, MCU produced and interrupts 0 when the following jumping edge of square wave took place, go up jumping along producing of square wave interrupts 1, and the time difference by calculating two interruptions and the dutycycle of square-wave cycle can obtain whole fan-shaped angle.The angle that measures deducts composed view and has just obtained angular displacement, and the moment coefficient that angle is multiply by in angular displacement has more just obtained torque.The reverse Schmidt trigger of U6D, U6E has been signal shaping effect and the state that changes interrupt signal in the circuit of Fig. 4, so that all can produce interruption at the rising edge and the trailing edge of square-wave signal.
Because above torque sensor output signal is a square wave, dutycycle is represented the moment size.Because the torque sensor structural relation, the relation between dutycycle and moment is slightly non-linear, and internal system has been carried out linear compensation.Speed regulator is in real work, and its rotating speed is adjusted (artificial or automatic) through regular meeting.Because torque sensor is loaded on the turning cylinder, then its output signal square-wave cycle also changes thereupon, and the interference of site environment, thereby influences the accuracy of torgue measurement.Therefore, in the software design, added the glide filter program, to improve the accuracy of detection of system.
Claims (9)
1. a chain industry boiler fire grate speed regulator dynamic real-time torque detects protective device, comprise torque sensor and telemetry circuit, it is characterized in that: described torque sensor comprises sensor mechanical part and sensor circuit part (10) composition, described sensor mechanical part comprises driving shaft (12) and driven shaft (13), described driving shaft (12) and driven shaft (13) coaxial and the two between be connected with elastic parts (15), on the two adjacent axle heads of described driving shaft (12) and driven shaft (13) a slice sector (14) is installed respectively, these two sectors (14) are parallel to each other and concentric is formed the sector group; Described sensor circuit part (10) comprises infrared receiving tube (Q1) and infrarede emitting diode (D4), the relative respectively both sides of being located at described sector group with infrarede emitting diode (D4) of infrared receiving tube (Q1); The colelctor electrode of described infrared receiving tube (Q1) is connected with power supply by resistance, the grounded emitter of infrared receiving tube (Q1), and the colelctor electrode of infrared receiving tube (Q1) is connected with telemetry circuit as the output of torque sensor; The input of described infrarede emitting diode (D4) is connected on the power supply by resistance; Described telemetry circuit is the control core with the microprocessor.
2. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 1 detects protective device, and it is characterized in that: described elastic parts (15) is that two ends are connected to the spring on driving shaft and the driven shaft.
3. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 1 detects protective device, and it is characterized in that: described telemetry circuit comprises microprocessor module (1) and the dtc signal input circuit (8) that is connected with this microprocessor module (1), output control module (9), human-computer interface module, calendar clock module (2), memory module (3), alarm module (4) and communication module (5); The input of described dtc signal input circuit (8) is connected with the output of torque sensor; The driving shaft of described torque sensor (12) is installed in the rotating shaft of fire grate speed regulator.
4. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 3 detects protective device, it is characterized in that: described dtc signal input circuit (8) comprises first and second reverse Schmidt trigger (U6D, U6E), input resistance (R8) and electric capacity (C17), and the described first and second reverse Schmidt triggers (U6D, U6E) are series connection mutually; The input of the first reverse Schmidt trigger (U6D) is connected with the end of electric capacity (C17) with input resistance (R8) respectively, the other end ground connection of described electric capacity (C17), the other end of described input resistance (R8) is connected to the torque signals output of torque sensor; The output of the other first and second reverse Schmidt triggers (U6D, U6E) is connected respectively on the microprocessor module (1).
5. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 3 detects protective device, and it is characterized in that: described output control module (9) is a relay.
6. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 3 detects protective device, and it is characterized in that: described telemetry circuit also is included as the power module (11) of each module for power supply.
7. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 3 detects protective device, and it is characterized in that: described human-computer interface module comprises display module (6) and Keysheet module (7), and described display module is a LCD.
8. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 3 detects protective device, and it is characterized in that: described microprocessor module (1) is AT89S52.
9. chain industry boiler fire grate speed regulator dynamic real-time torque according to claim 3 detects protective device, and it is characterized in that: described calendar clock module (2) is PCF8563; Described memory module (3) is X25045.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202311816U CN201740038U (en) | 2010-06-21 | 2010-06-21 | Chain industrial boiler fire grate speed regulator dynamic real time torque detection protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202311816U CN201740038U (en) | 2010-06-21 | 2010-06-21 | Chain industrial boiler fire grate speed regulator dynamic real time torque detection protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740038U true CN201740038U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202311816U Expired - Fee Related CN201740038U (en) | 2010-06-21 | 2010-06-21 | Chain industrial boiler fire grate speed regulator dynamic real time torque detection protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201740038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322994A (en) * | 2011-05-30 | 2012-01-18 | 西安交大思源科技股份有限公司 | Torque measuring method for fire grate reducer |
| CN104995495A (en) * | 2013-03-12 | 2015-10-21 | 史赛克公司 | Sensor assembly and method for measuring forces and torques |
-
2010
- 2010-06-21 CN CN2010202311816U patent/CN201740038U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322994A (en) * | 2011-05-30 | 2012-01-18 | 西安交大思源科技股份有限公司 | Torque measuring method for fire grate reducer |
| CN104995495A (en) * | 2013-03-12 | 2015-10-21 | 史赛克公司 | Sensor assembly and method for measuring forces and torques |
| US10048145B2 (en) | 2013-03-12 | 2018-08-14 | Stryker Corporation | Sensor assembly and method for measuring forces and torques |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20110621 |