CN109269389A - Unit brake is displaced automatic checkout system and brake control method - Google Patents
Unit brake is displaced automatic checkout system and brake control method Download PDFInfo
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- CN109269389A CN109269389A CN201811069773.XA CN201811069773A CN109269389A CN 109269389 A CN109269389 A CN 109269389A CN 201811069773 A CN201811069773 A CN 201811069773A CN 109269389 A CN109269389 A CN 109269389A
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- generating set
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a kind of unit brakes to be displaced automatic checkout system, including programmable logic controller (PLC) and multiple brake displacement detecting sensors, each brake displacement detecting sensor includes sensor housing, housing bottom seal cover board, stroke lever, magnet ring, reset spring, brake releasing position Hall sensor, brake position Hall sensor and coder module, the brake releasing position Hall sensor of each brake displacement detecting sensor and the signal output end of brake position Hall sensor are separately connected the corresponding brake of hydroelectric generating set opening and closing signal input terminal of programmable logic controller (PLC), the signal end of the coder module of each brake displacement detecting sensor is separately connected programmable logic controller (PLC) corresponding brake of hydroelectric generating set displacement signal end.The present invention can be in the environment of high temperature high magnetic, the position of the fast and reliable various large-sized water turbine generator brakes of induction.
Description
Technical field
The present invention relates to power stations to control equipment technical field, is displaced automatic detection system in particular to a kind of unit brake
System and brake control method.
Background technique
The working environment of Large Hydroelectric Set brake is extremely complex, electromagnetic field is larger, operating temperature is higher, brake
Process can also generate larger dust and grunge pollution.
The detection of unit brake position is mainly used for the position (brake jacks up or release) of correct response brake, thus
When avoiding the generating set in the case where brake jacks up from being switched on, and ensuring compressor emergency shutdown, unit automatic control flow chart is normal
It executes.
The braking system of unit is usually circumferentially uniform on the brake disc of turbine-generator units by 10~12 brakes
Distribution composition (ultra-large type Hydropower Plant is more).The detection of each brake position, currently, domestic major hydropower producer institute is only
Traditional, existing Automation Elements can be used, the mode generallyd use is to switch and examine by upper and lower two mechanical strokes
It surveys.
Brake epicoele or cavity of resorption are inflated, after bleeding in conventional mechanical stroke switch detection, drive stroke lever
It acts, the baffle welded on stroke lever judges brake position by contacting travel switch.In order to ensure safety, 10 (or
12) the jack-up position contact of brake passes through hardwire and connects, and any one brake is jacked up then to send to monitoring system and be made
Dynamic device jacks up signal, and the releasing position contact of 10 (or 12) brakes is concatenated by hardwire, it is necessary to which each brake is equal
Release just sends releasing position signal to monitoring system.
Puzzlement power station many years former brake position monitoring the problem of include:
1, baffle falls off, and risk is larger, and since mechanical stroke switch necessarily requires stress to contact, and it is necessary to contact dynamics
Reaching certain value could act, more demanding to stroke lever baffle welding position, if welding position is excessively close, will lead to contact stress
Larger, there is the risk that falls off in baffle；If welding position is too far, travel switch akinesia.Row after being operated every time due to brake
Journey is not necessarily consistent, to ensure that travel switch can act, generally baffle can be welded on closer location, so what baffle fell off
Risk is larger.
2, travel switch can not position, and directly concatenated or and picked to monitoring by hardwire since actuator travel is switched
System, the integrality that monitoring system can only detect 10 (or 12) brakes is to jack up or discharging, and can not be differentiated every
The position of a brake.When there are abnormal conditions, operation maintenance personnel, which has to enter into lower wind-tunnel and checks one by one, just can determine that failure system
Dynamic device, large labor intensity, danger coefficient is high, and working efficiency is extremely low.
Summary of the invention
Present invention aim to provide a kind of unit brake displacement automatic checkout system and brake control method, this
Reliability with higher is invented, can be in the environment of high temperature high magnetic, the large-sized water turbine of induction various specifications that can be fast and reliable
The position of generator brake.
In order to achieve this, unit brake designed by the present invention is displaced automatic checkout system, it is characterised in that: it is wrapped
Include programmable logic controller (PLC) and multiple brake displacement detecting sensors, wherein each brake displacement detecting sensor is equal
Including sensor housing, housing bottom seal cover board, stroke lever, magnet ring, reset spring, brake releasing position hall sensing
Device, brake position Hall sensor and coder module, wherein stroke chamber, sensor shell are equipped in sensor shell body
The top of body is equipped with the through-hole being connected to stroke chamber, and the bottom end of stroke lever passes through through-hole and, the bottom of stroke lever intracavitary positioned at stroke
Magnet ring is installed in portion side, and housing bottom seal cover board is mounted on the bottom of sensor housing and lives stroke chamber lid, reset spring
Bottom end connect housing bottom seal cover board, the bottom end of stroke lever is withstood on the top of reset spring, the sensor housing it is outer
Side offers two sensor being parallel to each other installation slideways along the length direction of sensor housing, and two sensor installations are slided
Brake releasing position Hall sensor and brake position Hall sensor, the magnet ring fortune of stroke lever are installed respectively on road
Phase can be triggered when moving the corresponding position of brake releasing position Hall sensor or brake position Hall sensor
The brake releasing position Hall sensor or brake position Hall sensor answered, sensor housing are equipped with encoder
Module offers gear chamber in sensor shell body, and the encoder gear of coder module is located in gear cavity room, stroke lever position
It is equipped with and the matched rack gear of encoder gear in the intracavitary part of stroke；
The sensor housing of each brake displacement detecting sensor is fixed on the bottom of corresponding brake of hydroelectric generating set
On seat, the top of the stroke lever of each brake displacement detecting sensor is used to directly withstand the system of brake of hydroelectric generating set
Motion block；
The brake releasing position Hall sensor of each brake displacement detecting sensor and brake position are suddenly
You are separately connected the corresponding brake of hydroelectric generating set opening and closing signal of programmable logic controller (PLC) by the signal output end of sensor
The signal communication end of input terminal, the coder module of each brake displacement detecting sensor is successively accessed hand in hand by putting in order
The corresponding brake of hydroelectric generating set displacement signal communication of (one of the connection types of 485 buses) programmable logic controller (PLC)
End.
The present invention designs reliability with higher using Hall effect principle, can be in the environment of high temperature high magnetic, can be fast
The position of the large-sized water turbine generator brake of fast reliable induction various specifications.Can stable operation for a long time, and install,
Wiring, easy to adjust, visual strong applicability, operation and maintenance are simple, can be greatly reduced operation maintenance personnel's security risk and
Labor intensity.
A kind of unit brake displacement automatic testing method of above system, it includes the following steps:
Step 1: each brake of hydroelectric generating set on hydrogenerator is in turbine-generator units remote control terminal
Control under the braking release that synchronizes or brake；
Step 2: the brake releasing position Hall sensor of each brake of hydroelectric generating set is respectively induced corresponding water
The brake of turbine generator group brake discharges signal in place, and signal is sent to programmable logic in place by brake release
The brake position Hall sensor of controller, each brake of hydroelectric generating set is respectively induced corresponding hydrogenerator
The brake signal in place of group brake, and signal is sent to programmable logic controller (PLC) in place by the brake；
Meanwhile the brake block of the coder module induction brake of hydroelectric generating set of each brake of hydroelectric generating set
Real-time stroke signal, and the real-time stroke signal of the brake block is sent to programmable logic controller (PLC)；
Step 3: signal makes the following judgment programmable logic controller (PLC) based on the received:
When the brake releasing position Hall sensor output brake release signal in place of brake of hydroelectric generating set,
Or brake of hydroelectric generating set coder module output the real-time stroke signal of brake block be brake block full stroke 0~
When 5%, it is judged as current brake of hydroelectric generating set release；
When the brake position Hall sensor output brake brake signal in place of brake of hydroelectric generating set,
And the real-time stroke signal of brake block of the coder module output of brake of hydroelectric generating set is brake block full stroke
When 100%, it is judged as current brake of hydroelectric generating set brake；
The working state signal of each brake of hydroelectric generating set is transferred to hydraulic generator by programmable logic controller (PLC)
Set remote controlling terminal；
Step 4: signal makes the following judgment turbine-generator units remote control terminal based on the received:
When all release of the working condition of all brake of hydroelectric generating set, then confirm that turbine-generator units are
Brake release state then confirms turbine-generator units when the working condition for having a brake of hydroelectric generating set is brake
For braking brake state.
Turbine-generator units remote control terminal and programmable logic controller (PLC), which are displaced multiple brakes, in the present invention examines
The signal for surveying sensor output carries out comprehensive descision as above, can more fully understand the braking of turbine power generator brake
Situation prevents the generation of turbine power generator brake brake condition monitoring mistake, while each brake displacement inspection in the present invention
The dual judgement that sensor uses extreme position and stroke lever shift length is surveyed, turbine power generator brake is further improved
The accuracy of brake condition induction.
Detailed description of the invention
Fig. 1 is the positive structure diagram of brake displacement detecting sensor in the present invention；
Fig. 2 is the side structure schematic view of brake displacement detecting sensor in the present invention；
Fig. 3 is the schematic cross-sectional view of brake displacement detecting sensor in the present invention；
Fig. 4 is the positive structure diagram of coder module in the present invention；
Fig. 5 is the schematic cross-sectional view of coder module in the present invention；
Fig. 6 is the usage state diagram of brake displacement detecting sensor in the present invention；
Fig. 7 is electric control part structural block diagram of the invention.
Wherein, 1-brake displacement detecting sensor, 1.1-sensor housings, 1.2-housing bottom seal cover boards,
1.3-stroke levers, 1.4-magnet rings, 1.5-reset springs, 1.6-brake releasing position Hall sensors, 1.7-brakes
Normal danger Hall sensor, 1.8-coder modules, 1.9-stroke chambers, 1.10-through-holes, the installation of 1.11-sensors are slided
Road, 1.12-gear chambers, 1.13-encoder gears, 1.14-rack gears, 1.15-encoder housings, 1.16-rotation connection
Axis, 1.17-non-contact type rotary encoders, 1.18-rotation bipolar magnets, 1.19-bearings, 1.20-dust-proof seal rings,
1.21-sensor packaging type mounting brackets, 2-programmable logic controller (PLC)s, 3-turbine-generator units remote control terminals,
4-brake of hydroelectric generating set, 4.1-pedestals, 4.2-brake block, 5-support bars.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
A kind of unit brake displacement automatic checkout system as shown in Fig. 1~7, it includes programmable logic controller (PLC) 2
With multiple brake displacement detecting sensors 1 (generally 10 or 12), wherein each brake displacement detecting sensor 1
It include sensor housing 1.1, housing bottom seal cover board 1.2, stroke lever 1.3, magnet ring 1.4, reset spring 1.5, brake
Releasing position Hall sensor 1.6, brake position Hall sensor 1.7 and coder module 1.8, wherein sensor
Stroke chamber 1.9 is equipped in shell 1.1, the top of sensor housing 1.1 is equipped with the through-hole 1.10 being connected to stroke chamber 1.9, stroke
The bottom end of bar 1.3 passes through through-hole 1.10 and is located in stroke chamber 1.9, and the bottom sides of stroke lever 1.3 install magnet ring 1.4, shell
Sealed bottom cover board 1.2 is mounted on the bottom of sensor housing 1.1 and stroke chamber 1.9 is covered (housing bottom seal cover board 1.2
Edge and stroke chamber are equipped with sealing ring between 1.9 inside), the bottom end of reset spring 1.5 connects housing bottom seal cover board 1.2,
The bottom end of stroke lever 1.3 is withstood on the top of reset spring 1.5, and the lateral surface of the sensor housing 1.1 is along sensor housing 1.1
Length direction offer two sensors being parallel to each other installation slideways 1.11, on two sensors installation slideways 1.11 respectively
(brake releasing position is suddenly for installation brake releasing position Hall sensor 1.6 and brake position Hall sensor 1.7
The installation site of that sensor 1.6 and brake position Hall sensor 1.7 can carry out micro- on sensor installation slideway
Adjust, and be fixed in scheduled position), the magnet ring 1.4 of stroke lever 1.3 moves to brake releasing position Hall sensor
1.6 or brake position Hall sensor 1.7 corresponding position when can trigger corresponding brake releasing position Hall
Sensor 1.6 or brake position Hall sensor 1.7, sensor housing 1.1 are equipped with coder module 1.8, sensing
Gear chamber 1.12 is offered in device shell 1.1, the encoder gear 1.13 of coder module 1.8 is located at gear chamber 1.12
Interior, stroke lever 1.3 is located at the part in stroke chamber 1.9 and is equipped with and the matched rack gear 1.14 of encoder gear 1.13, the rack gear
1.14 are processed by the mechanical manufacturing technology of high-precision low-speed wire cutting wire cutting；
The sensor housing 1.1 of each brake displacement detecting sensor 1 is fixed on corresponding brake of hydroelectric generating set 4
Pedestal 4.1 on, the top of the stroke lever 1.3 of each brake displacement detecting sensor 1 is used to directly withstand by support bar 5
The brake block 4.2 of brake of hydroelectric generating set 4；
The brake releasing position Hall sensor 1.6 of each brake displacement detecting sensor 1 and brake position
The signal output end for setting Hall sensor 1.7 is separately connected the corresponding brake of hydroelectric generating set of programmable logic controller (PLC) 2
Opening and closing signal input terminal, the signal communication end of the coder module 1.8 of each brake displacement detecting sensor 1 is by putting in order
The corresponding brake of hydroelectric generating set displacement signal communication ends of programmable logic controller (PLC) 2 are successively accessed hand in hand.
In above-mentioned technical proposal, it further includes turbine-generator units remote control terminal 3, the programmable logic controller (PLC)
2 each brake of hydroelectric generating set release signal output end and each brake of hydroelectric generating set brake signal output end
It is separately connected the correspondence brake of hydroelectric generating set status signal feedback end of turbine-generator units remote control terminal 3.
In above-mentioned technical proposal, the coder module 1.8 includes encoder housing 1.15, encoder gear 1.13, rotation
Turn shaft coupling 1.16, non-contact type rotary encoder 1.17 and rotation bipolar magnet 1.18, wherein encoder housing 1.15 is mounted on
On sensor housing 1.1, encoder gear 1.13, the other end installation of rotation shaft coupling 1.16 are installed in one end of rotation shaft coupling 1.16
Bipolar magnet 1.18 is rotated, the non-contact type rotary encoder 1.17 is mounted in encoder housing 1.15 and bipolar with rotating
Magnet 1.18 matches, and rotation shaft coupling 1.16 is mounted in encoder housing 1.15 by bearing 1.19 (high-speed micro bearing),
Encoder gear 1.13 is located in gear chamber 1.12, and the signal communication end of non-contact type rotary encoder 1.17 is for output pair
Answer brake of hydroelectric generating set displacement data.Non-contact type rotary encoder 1.17 is by non-contact type rotary encoder 1.17
With rotation bipolar magnet 1.18 angle information, with 12 absolute value gray code data formats and 6 mode bits of chip.
I.e. 18 bit length data modes are encoded.Pass through MODBUS RTU between coder module 1.8 and programmable logic controller (PLC) 2
Communication protocol is transmitted, and data realize data via half-duplex RS -485/RS-422 transceiver and two-channel digital isolator
Transmission.
In above-mentioned technical proposal, dust-proof seal ring 1.20 is equipped between the through-hole 1.10 and stroke lever 1.3, it is described dust-proof
Sealing ring 1.20 is fixed on 1.10 inner wall of through-hole.
In above-mentioned technical proposal, it further includes sensor packaging type mounting bracket 1.21, the sensor packaging type installation
The bottom end of bracket 1.21 is fixedly connected with the pedestal 4.1 of corresponding brake of hydroelectric generating set 4, and sensor housing 1.1 is mounted on biography
In sensor packaging type mounting bracket 1.21, sensor housing 1.1 has 20mm's in 1.21 side of sensor packaging type mounting bracket
Fluctuation range, and can be fixed in due course in the moving range.The design can be such that brake displacement detecting sensor 1 adapts to
The brake of hydroelectric generating set 4 of various gauge sizes.
In above-mentioned technical proposal, the top of the stroke lever 1.3 is hemispherical measuring head.Hemispherical measuring head and measured object
Body point contact, can eliminate the influence of lateral force, only receive the effect of axial force.
In above-mentioned technical proposal, the programmable logic controller (PLC) or brake of the programmable logic controller (PLC) 2 are displaced inspection
Survey the fault-signal input signal end of sensor failure signals output end connection turbine-generator units remote control terminal 3.
In above-mentioned technical proposal, each brake displacement detecting sensor 1 is not necessarily to artificial check for zero, is pacified for the first time with system
Displacement discharges extreme position value and braking brake pole respectively as the initial brake of brake of hydroelectric generating set 4 after dress is normal
Extreme position value, initial full stroke value of their initial difference as brake displacement detecting sensor 1.Measured value and initial system
The difference of dynamic release extreme position value as brake displacement detecting sensor 1 displacement and shown.
In above-mentioned technical proposal, this system can measure the abrasion loss of brake, it is assumed that initial full stroke is X0mm, actual measurement
Full stroke is X1mm, ideally brake wear amount △ X=X1-X0.Program calculates the full row after each brake jacks up
Journey calculates abrasion loss, and stores, shows the abrasion loss, can check abrasion condition by tendency chart.
In addition, in order to analyze the abrasion condition of each brake displacement detecting sensor 1, system records each brake position
The brake to brake at first in 1 action process of detection sensor is moved, each brake displacement detecting sensor 1 is counted and jacks up at first
Number, a reference data as brake friction situation analysis.
In above-mentioned technical proposal, brake releasing position Hall sensor 1.6 installs slideway in one, left side sensor
Installation site on 1.11 corresponds to the releasing position of the brake block of turbine-generator units, brake position Hall sensor
1.7 installation site on the right on sensor installation slideway 1.11 corresponds to the normal danger of the brake block of turbine-generator units
(can also according to the actual situation, self-defining).
A kind of unit brake displacement automatic testing method of above system, it includes the following steps:
Step 1: each brake of hydroelectric generating set 4 on hydrogenerator is in turbine-generator units remote control terminal
The braking release synchronized under 3 control or brake；
Step 2: the brake releasing position Hall sensor 1.6 of each brake of hydroelectric generating set 4 is respectively induced pair
The brake of brake of hydroelectric generating set 4 is answered to discharge signal in place, and signal is sent to and can compile in place by brake release
Journey logic controller 2, the brake position Hall sensor 1.7 of each brake of hydroelectric generating set 4 are respectively induced pair
The brake of brake of hydroelectric generating set 4 signal in place is answered, and signal is sent to and can compile in place by the brake
Journey logic controller 2；
Meanwhile the coder module 1.8 of each brake of hydroelectric generating set 4 incudes brake of hydroelectric generating set 4
The real-time stroke signal of brake block, and the real-time stroke signal of the brake block is sent to programmable logic controller (PLC) 2；
Step 3: signal makes the following judgment programmable logic controller (PLC) 2 based on the received:
When 1.6 output brake of brake releasing position Hall sensor of brake of hydroelectric generating set 4 discharges in place
The real-time stroke signal of brake block of the coder module 1.8 of signal or brake of hydroelectric generating set 4 output is that brake block expires row
Journey 0~5% when, be judged as the release of current brake of hydroelectric generating set 4 (if only Hall switching element signal, may
Occur, not completely in place due to stroke, Hall element is obstructed, then can not judge, whether brake discharges, mechanism Auto Power On
Process not can be carried out)；
When 1.7 output brake of brake position Hall sensor of brake of hydroelectric generating set 4 brakes in place
Signal, and the real-time stroke signal of brake block that the coder module 1.8 of brake of hydroelectric generating set 4 exports is full for brake block
Stroke 100% when, be judged as the brake of current brake of hydroelectric generating set 4 (providing criterion to brake)；
The working state signal of each brake of hydroelectric generating set 4 is transferred to water wheels hair by programmable logic controller (PLC) 2
Motor group remote control terminal 3；
Step 4: signal makes the following judgment turbine-generator units remote control terminal 3 based on the received:
When all release of the working condition of all brake of hydroelectric generating set 4, then turbine-generator units are confirmed
Hydrogenerator is then confirmed when the working condition for having a brake of hydroelectric generating set 4 is brake for brake release state
Group is braking brake state；
Step 5, turbine-generator units remote control terminal 3 receives the working condition of each brake of hydroelectric generating set 4
Signal and corresponding brake of hydroelectric generating set number information, when there are the working condition of brake of hydroelectric generating set 4 with
When the control command that turbine-generator units remote control terminal 3 issues in step 1 is inconsistent, then brake of hydroelectric generating set 4
There are failure risk, turbine-generator units remote control terminal 3 is by inquiring corresponding brake of hydroelectric generating set number letter
Breath determines that there are the brake of hydroelectric generating set 4 of failure risk.
In the step 3 of above-mentioned technical proposal, programmable logic controller (PLC) 2 monitors each each brake displacement detecting sensing
The displacement data range of 1 output signal of device, when there are the displacement numbers of some 1 output signal of brake displacement detecting sensor
When according to range not within the scope of the displacement data of preset normal operation of sensor, programmable logic controller (PLC) 2 is sent out to water wheels
Motor group remote control terminal 3 sends the signal of 1 failure of brake displacement detecting sensor, meanwhile, if there is programmable
The system failure inside logic controller 2, programmable logic controller (PLC) 2 are also sent to turbine-generator units remote control terminal 3
The signal of programmable logic controller (PLC) failure.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of unit brake is displaced automatic checkout system, it is characterised in that: it includes programmable logic controller (PLC) (2) and more
A brake displacement detecting sensor (1), wherein each brake displacement detecting sensor (1) includes sensor housing
(1.1), housing bottom seal cover board (1.2), stroke lever (1.3), magnet ring (1.4), reset spring (1.5), brake release position
Set Hall sensor (1.6), brake position Hall sensor (1.7) and coder module (1.8), wherein sensor
Stroke chamber (1.9) are equipped in shell (1.1), the top of sensor housing (1.1) is equipped with the through-hole being connected to stroke chamber (1.9)
(1.10), the bottom end of stroke lever (1.3) passes through through-hole (1.10) and is located in stroke chamber (1.9), the bottom side of stroke lever (1.3)
Magnet ring (1.4) are installed in face, and housing bottom seal cover board (1.2) is mounted on the bottom of sensor housing (1.1) and by stroke chamber
(1.9) it covers, the bottom end of reset spring (1.5) connects housing bottom seal cover board (1.2), the top top of reset spring (1.5)
The lateral surface of the firmly bottom end of stroke lever (1.3), the sensor housing (1.1) is opened along the length direction of sensor housing (1.1)
Slideway (1.11) are installed equipped with two sensors being parallel to each other, installation braking respectively on two sensor installations slideway (1.11)
Device releasing position Hall sensor (1.6) and brake position Hall sensor (1.7), the magnet ring of stroke lever (1.3)
(1.4) correspondence of brake releasing position Hall sensor (1.6) or brake position Hall sensor (1.7) is moved to
Corresponding brake releasing position Hall sensor (1.6) or brake position Hall sensor can be triggered when position
(1.7), sensor housing (1.1) is equipped with coder module (1.8), offers gear chamber in sensor housing (1.1)
(1.12), the encoder gear (1.13) of coder module (1.8) is located in gear chamber (1.12), and stroke lever (1.3) is located at
Part in stroke chamber (1.9) is equipped with and encoder gear (1.13) matched rack gear (1.14)；
The sensor housing (1.1) of each brake displacement detecting sensor (1) is fixed on corresponding brake of hydroelectric generating set
(4) on pedestal (4.1), the top of the stroke lever (1.3) of each brake displacement detecting sensor (1) is for directly withstanding water
The brake block (4.2) of turbine generator group brake (4)；
The brake releasing position Hall sensor (1.6) of each brake displacement detecting sensor (1) and brake position
The signal output end for setting Hall sensor (1.7) is separately connected the corresponding turbine-generator units system of programmable logic controller (PLC) (2)
Dynamic device opening and closing signal input terminal, the signal communication end of the coder module (1.8) of each brake displacement detecting sensor (1) is pressed
Put in order the successively corresponding brake of hydroelectric generating set displacement signal communication of access programmable logic controller (PLC) (2) hand in hand
End.
2. unit brake according to claim 1 is displaced automatic checkout system, it is characterised in that: it further includes water wheels hair
Motor group remote control terminal (3), each brake of hydroelectric generating set release signal of the programmable logic controller (PLC) (2)
Output end and each brake of hydroelectric generating set brake signal output end are separately connected turbine-generator units remote control terminal
(3) correspondence brake of hydroelectric generating set status signal feedback end.
3. unit brake according to claim 1 is displaced automatic checkout system, it is characterised in that: the coder module
It (1.8) include encoder housing (1.15), encoder gear (1.13), rotation shaft coupling (1.16), non-contact type rotary encoder
(1.17) and bipolar magnet (1.18) are rotated, wherein encoder housing (1.15) is mounted on sensor housing (1.1), rotation
Encoder gear (1.13) are installed in one end of shaft coupling (1.16), the other end installation rotation bipolar magnet of rotation shaft coupling (1.16)
(1.18), the non-contact type rotary encoder (1.17) be mounted in encoder housing (1.15) and with rotation bipolar magnet
(1.18) match, rotation shaft coupling (1.16) is mounted in encoder housing (1.15) by bearing (1.19), encoder gear
(1.13) it is located in gear chamber (1.12), the signal communication end of non-contact type rotary encoder (1.17) is corresponding for exporting
Brake of hydroelectric generating set displacement data.
4. unit brake according to claim 1 is displaced automatic checkout system, it is characterised in that: the through-hole (1.10)
Dust-proof seal ring (1.20) are equipped between stroke lever (1.3), the dust-proof seal ring (1.20) is fixed in through-hole (1.10)
On wall.
5. unit brake according to claim 1 is displaced automatic checkout system, it is characterised in that: it further includes sensor
The bottom end of packaging type mounting bracket (1.21), the sensor packaging type mounting bracket (1.21) is fixedly connected with corresponding hydraulic generator
The pedestal (4.1) of unit brake (4), sensor housing (1.1) are mounted in sensor packaging type mounting bracket (1.21), are passed
Sensor shell (1.1) has the fluctuation range of 20mm in sensor packaging type mounting bracket (1.21) side, and can be in the shifting
It is fixed in due course in dynamic range.
6. unit brake according to claim 1 is displaced automatic checkout system, it is characterised in that: the stroke lever
(1.3) top is hemispherical measuring head.
7. unit brake according to claim 2 is displaced automatic checkout system, it is characterised in that: the programmable logic
The programmable logic controller (PLC) or brake displacement detecting sensor fault-signal communication ends of controller (2) connect hydrogenerator
The fault-signal communication ends of group remote control terminal (3).
8. a kind of unit brake of system described in claim 1 is displaced automatic testing method, which is characterized in that it includes as follows
Step:
Step 1: each brake of hydroelectric generating set (4) on hydrogenerator is in turbine-generator units remote control terminal
(3) the braking release synchronized under control or brake；
Step 2: the brake releasing position Hall sensor (1.6) of each brake of hydroelectric generating set (4) is respectively induced pair
The brake of brake of hydroelectric generating set (4) is answered to discharge signal in place, and be sent to can for signal in place by brake release
Programmed logic controller (2), the brake position Hall sensor (1.7) point of each brake of hydroelectric generating set (4)
The brake of brake of hydroelectric generating set (4) signal in place Gan Ying not corresponded to, and by brake signal in place
It is sent to programmable logic controller (PLC) (2)；
Meanwhile the coder module (1.8) of each brake of hydroelectric generating set (4) incudes brake of hydroelectric generating set (4)
The real-time stroke signal of brake block, and the real-time stroke signal of the brake block is sent to programmable logic controller (PLC) (2)；
Step 3: signal makes the following judgment programmable logic controller (PLC) (2) based on the received:
When brake releasing position Hall sensor (1.6) output brake of brake of hydroelectric generating set (4) discharges in place
The real-time stroke signal of brake block of the coder module (1.8) of signal or brake of hydroelectric generating set (4) output is brake block
Full stroke 0~5% when, be judged as current brake of hydroelectric generating set (4) discharge；
When brake position Hall sensor (1.7) output brake of brake of hydroelectric generating set (4) brakes in place
Signal, and the real-time stroke signal of brake block of coder module (1.8) output of brake of hydroelectric generating set (4) is braking
Block full stroke 100% when, be judged as current brake of hydroelectric generating set (4) brake；
The working state signal of each brake of hydroelectric generating set (4) is transferred to water wheels hair by programmable logic controller (PLC) (2)
Motor group remote control terminal (3)；
Step 4: signal makes the following judgment turbine-generator units remote control terminal (3) based on the received:
When all release of the working condition of all brake of hydroelectric generating set (4), then confirm that turbine-generator units are
Brake release state then confirms hydrogenerator when the working condition for having a brake of hydroelectric generating set (4) is brake
Group is braking brake state.
9. unit brake according to claim 8 is displaced automatic testing method, it is characterised in that: after the step 4 also
Including step 5, turbine-generator units remote control terminal (3) receives the working condition of each brake of hydroelectric generating set (4)
Signal and corresponding brake of hydroelectric generating set number information, when there are the working conditions of brake of hydroelectric generating set (4)
When inconsistent with the control command of turbine-generator units remote control terminal (3) sending in step 1, then turbine-generator units are braked
There are failure risks for device (4), and turbine-generator units remote control terminal (3) is by inquiring corresponding brake of hydroelectric generating set
Number information determines that there are the brake of hydroelectric generating set of failure risk (4).
10. unit brake according to claim 8 is displaced automatic testing method, it is characterised in that: in the step 3,
Programmable logic controller (PLC) (2) monitors the displacement data model of each each brake displacement detecting sensor (1) output signal
It encloses, when there are the displacement data ranges of some brake displacement detecting sensor (1) output signal not in preset sensor
When within the scope of the displacement data of normal work, programmable logic controller (PLC) (2) is to turbine-generator units remote control terminal (3)
The signal of brake displacement detecting sensor (1) failure is sent, meanwhile, it is internal if there is programmable logic controller (PLC) (2)
The system failure, programmable logic controller (PLC) (2) also to turbine-generator units remote control terminal (3) send programmable logic control
The signal of device failure processed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112550323A (en) * | 2020-11-27 | 2021-03-26 | 株洲旭阳机电科技开发有限公司 | Intelligent railway wagon system |
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| US20130218517A1 (en) * | 2012-02-16 | 2013-08-22 | Infineon Technologies Ag | Rotation Angle Sensor for Absolute Rotation Angle Determination Even Upon Multiple Revolutions |
| CN204381074U (en) * | 2014-12-19 | 2015-06-10 | 本钢板材股份有限公司 | A kind of rolling mill screwdown position sensor |
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