CN208671908U - Brake of hydroelectric generating set is displaced automatic detection sensor - Google Patents
Brake of hydroelectric generating set is displaced automatic detection sensor Download PDFInfo
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- CN208671908U CN208671908U CN201821502410.6U CN201821502410U CN208671908U CN 208671908 U CN208671908 U CN 208671908U CN 201821502410 U CN201821502410 U CN 201821502410U CN 208671908 U CN208671908 U CN 208671908U
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- brake
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- generating set
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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 utility model discloses a kind of brake of hydroelectric generating set to be displaced automatic detection sensor, stroke chamber is equipped in sensor shell body, the top of sensor housing is equipped with the through-hole being connected to stroke chamber, the bottom end of stroke lever is across through-hole and intracavitary positioned at stroke, the bottom of stroke lever is installed by magnet ring, the bottom end of reset spring connects housing bottom seal cover board, withstand the bottom end of stroke lever in the top of reset spring, the outside of sensor housing is equipped with two sensor being parallel to each other installation slideways, brake releasing position Hall sensor and brake position Hall sensor are installed respectively thereon, sensor housing is equipped with coder module, gear chamber is equipped in sensor shell body, encoder gear is located in gear cavity room, stroke lever side wall is equipped with and the matched rack gear of encoder gear.Using the dual judgement of extreme position and stroke lever shift length, the further accuracy for improving judgement when carrying out brake status judgement using the utility model.
Description
Technical field
The utility model relates to power stations to control equipment technical field, in particular to a kind of brake of hydroelectric generating set position
Move automatic detection sensor.
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 the position signal (brake or release) of correct response brake, to keep away
When exempting from generating set in the case where brake to be switched on, and ensuring compressor emergency shutdown, unit automatic control flow chart is normally held
Row.
The braking system of unit is usually uniformly distributed by 10~12 brakes and forms (ultra-large type Hydropower Plant is more).
It common design and uses at this stage, each brake position mainly passes through two mechanical strokes switch detections up and down.
After brake epicoele or cavity of resorption inflation, bleeding, stroke lever movement is driven, the baffle welded on stroke lever passes through
Contacting travel switchs to judge brake position.In order to ensure safety, brake (jack-up) position of 10 (or 12) brakes
By hardwire and connecing, any one brake jacks up then to be sent brake to monitoring system and jacks up signal contact, 10 (or 12
It is a) the releasing position contact of brake passes through hardwire and concatenates, it is necessary to and each brake discharges, and just releases to monitoring system transmission
Put position signal.
The problem of former brake position monitoring of puzzlement power station many years includes: that 1, the baffle risk that falls off is larger, due to tradition
Mechanical stroke switch necessarily requires stress to contact, and contact dynamics must reach certain value and could act, to stroke lever baffle
Welding position is more demanding, if welding position is excessively close, it is larger to will lead to contact stress, and baffle has the risk that falls off；If welding position
It sets too far, travel switch akinesia.Stroke is not necessarily consistent after being operated every time due to brake, to ensure that travel switch is active
Make, generally baffle can be welded on closer location, so the risk that baffle falls off is larger.2, travel switch can not position, by
In actuator travel switch directly concatenated by hardwire or and pick to monitoring system, monitoring system can only detect 10 (or
12) integrality of brake is can not to differentiate the position of each brake jacking up or discharging.When there are abnormal conditions
When, operation maintenance personnel, which has to enter into lower wind-tunnel and checks just one by one, can determine that failure brake, and large labor intensity, danger coefficient is high, and
And working efficiency is extremely low.
In addition, this mechanical stroke switch detection mode not only adjusts, installs and need the time long, and reliability is not yet
Height can only participate in logic control by the way of voting, if a no involution of switch of mechanical stroke switch, operation
Operator on duty must frequently enter wind-tunnel and go to agitate brake of hydroelectric generating set, to realize the involution of travel switch.
Utility model content
The purpose of this utility model seeks to provide a kind of brake displacement detecting sensor, which has preferable
Reliability, can be in the environment of high temperature high magnetic, stable operation for a long time, and mounting and adjusting is convenient, strong applicability.
In order to achieve this, brake of hydroelectric generating set designed by the utility model is displaced automatic detection sensor,
It is characterized by: it includes sensor housing, housing bottom seal cover board, stroke lever, magnet ring, reset spring, brake release
Position Hall sensor, brake position Hall sensor and coder module, wherein stroke is equipped in sensor shell body
Chamber, the top of sensor housing are equipped with the through-hole being connected to stroke chamber, and the bottom end of stroke lever is across through-hole and intracavitary positioned at stroke,
The bottom sides of stroke lever install magnet ring, and housing bottom seal cover board is mounted on the bottom of sensor housing and by stroke chamber lid
Firmly, the bottom end of reset spring connects housing bottom seal cover board, and the bottom end of stroke lever, the sensing are withstood in the top of reset spring
The lateral surface of device shell offers two sensor being parallel to each other installation slideways, two biographies along the length direction of sensor housing
Brake releasing position Hall sensor and brake position Hall sensor, stroke are installed respectively on sensor installation slideway
When the magnet ring of bar moves to the corresponding position of brake releasing position Hall sensor or brake position Hall sensor
Corresponding brake releasing position Hall sensor or brake position Hall sensor can be triggered, on sensor housing
Equipped with coder module, gear chamber is offered in sensor shell body, the encoder gear of coder module is located at gear chamber
Interior, stroke lever is located at the intracavitary part of stroke and is equipped with and the matched rack gear of encoder gear.
The utility model using Hall effect principle design have preferable reliability, can in the environment of high temperature high magnetic,
The position of the large-sized water turbine generator brake of induction various specifications that can be fast and reliable.Can stable operation for a long time, and
Installation, wiring, easy to adjust, visual strong applicability, operation and maintenance are simple, and operation maintenance personnel's safety wind can be greatly reduced
Danger and labor intensity.
The utility model is provided with brake releasing position Hall sensor, brake position Hall sensor simultaneously
And coder module, so that using extreme position and stroke lever when carrying out brake status judgement using the utility model
The dual judgement of shift length further improves the accuracy of turbine power generator brake brake condition induction.
Detailed description of the invention
Fig. 1 is the positive structure diagram of brake displacement detecting sensor in the utility model；
Fig. 2 is the side structure schematic view of brake displacement detecting sensor in the utility model；
Fig. 3 is the schematic cross-sectional view of brake displacement detecting sensor in the utility model；
Fig. 4 is the positive structure diagram of coder module in the utility model；
Fig. 5 is the schematic cross-sectional view of coder module in the utility model；
Fig. 6 is the usage state diagram of brake displacement detecting sensor in the utility model；
Fig. 7 is the electric control part structural block diagram of the utility model.
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-mounting frame for sensor, 2-programmable logic controller (PLC)s, 3-turbine-generator units remote control terminals, 4-water wheels
Generating set brake, 4.1-pedestals, 4.2-brake block, 5-support bars.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
A kind of brake of hydroelectric generating set displacement automatic detection sensor as shown in Fig. 1~7, it includes sensor shell
Body 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 pass
Sensor 1.6, brake position Hall sensor 1.7 and coder module 1.8, wherein row is equipped in sensor housing 1.1
Journey chamber 1.9, the top of sensor housing 1.1 are equipped with the through-hole 1.10 being connected to stroke chamber 1.9, and the bottom end of stroke lever 1.3 passes through
Through-hole 1.10 is simultaneously located in stroke chamber 1.9, and the bottom sides of stroke lever 1.3 install magnet ring 1.4, housing bottom seal cover board 1.2
It is mounted on the bottom of sensor housing 1.1 and stroke chamber 1.9 is covered into (1.2 edge of housing bottom seal cover board and stroke chamber 1.9
Sealing ring is equipped between inside), the bottom end of reset spring 1.5 connects housing bottom seal cover board 1.2, the top of reset spring 1.5
The bottom end of stroke lever 1.3 is withstood at end, and the lateral surface of the sensor housing 1.1 is opened up along the length direction of sensor housing 1.1
There are two sensor being parallel to each other installation slideways 1.11, brake release is installed respectively on two sensor installation slideways 1.11
Position Hall sensor 1.6 and (1.6 He of brake releasing position Hall sensor of brake position Hall sensor 1.7
The installation site of brake position Hall sensor 1.7 can be installed in sensor and is finely adjusted on slideway, and scheduled
Position is fixed), the magnet ring 1.4 of stroke lever 1.3 moves to brake releasing position Hall sensor 1.6 or brake
Corresponding brake releasing position Hall sensor 1.6 or braking can be triggered when the corresponding position of position Hall sensor 1.7
Device normal danger Hall sensor 1.7, sensor housing 1.1 are equipped with coder module 1.8, open up in sensor housing 1.1
There is gear chamber 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, which is equipped with, to be walked with the matched rack gear 1.14 of encoder gear 1.13, the rack gear 1.14 by high-precision low speed
The mechanical manufacturing technology processing of silk thread cutting.
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 communication ends of non-contact type rotary encoder 1.17 are for exporting corresponding water
Turbine generator group brake displacement data.Non-contact type rotary encoder 1.17 is by non-contact type rotary encoder 1.17 and revolves
Turn the angle information of bipolar magnet 1.18, with 12 absolute value gray code data formats and 6 mode bits of chip.I.e. 18
Bit length data mode is encoded.It is communicated between coder module 1.8 and programmable logic controller (PLC) 2 by MODBUS RTU
Agreement is transmitted, and data realize that data pass via half-duplex RS -485/RS-422 transceiver and two-channel digital isolator
It is defeated.
In above-mentioned technical proposal, brake releasing position Hall sensor 1.6 and brake position Hall are passed
The signal output end of sensor 1.7 is separately connected the corresponding brake of hydroelectric generating set opening and closing signal of programmable logic controller (PLC) 2
Input terminal, the communication ends of each coder module 1.8 are by the access (one of the connection types of 485 buses) hand in hand that puts in order successively
The brake of hydroelectric generating set displacement communication ends of programmable logic controller (PLC) 2.
In above-mentioned technical proposal, the installation site of brake releasing position Hall sensor 1.6 is released for induction brake
The extreme position put and (fallen).
Limit position of the installation site of brake position Hall sensor 1.7 for induction brake brake (jack-up)
It sets.Installation site of the brake releasing position Hall sensor 1.6 on the sensor installation slideway 1.11 of one, the left side corresponds to water
The releasing position of the brake block of turbine generator group, the sensor installation on the right of brake position Hall sensor 1.7
The normal danger that installation site on slideway 1.11 corresponds to the brake block of turbine-generator units (can also according to the actual situation, voluntarily
Definition).
Rack gear 1.14 on stroke lever 1.3 drives encoder gear 1.13 to rotate, and is coaxially connected with encoder gear 1.13
Rotation bipolar magnet 1.18 synchronize rotation, the position of stroke lever 1.3 and rotation bipolar magnet 1.18 are associated, rotation pair
The rotation angle of pole magnet 1.18 is realized by 1.17 real-time detection of non-contact type rotary encoder to brake actual displacement amount
Detection.
In above-mentioned technical proposal, the programmable logic controller (PLC) 2 is to brake releasing position Hall sensor 1.6, system
The signal that dynamic device normal danger Hall sensor 1.7 and coder module 1.8 transmit makes the following judgment:
When signal or coder module 1.8 are defeated in place for the release of 1.6 output brake of brake releasing position Hall sensor
When the real-time stroke signal of brake block out is the 0~5% of brake block full stroke, it is judged as current brake of hydroelectric generating set 4
Release；
When 1.7 output brake of brake position Hall sensor brake signal, and coder module 1.8 in place
When the real-time stroke signal of the brake block of output is the 100% of brake block full stroke, it is judged as current brake of hydroelectric generating set 4
Brake.
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 mounting frame for sensor 1.21, the bottom of the mounting frame for sensor 1.21
The pedestal 4.1 for being fixedly connected with corresponding brake of hydroelectric generating set 4 is held, sensor housing 1.1 is mounted on sensor installation
On bracket 1.21, sensor housing 1.1 has the fluctuation range of 20mm in 1.21 side of mounting frame for sensor, and can be at this
It is in due course fixed as needed in moving range.
In above-mentioned technical proposal, the top of the stroke lever 1.3 is hemispherical measuring head (with testee point contact, energy
The influence for eliminating lateral force, only receives the effect of axial force).
In above-mentioned technical proposal, the top of each sensor installation slideway 1.11 is equipped with positive stop strip, and positive stop strip can will be made
The installation site of dynamic device releasing position Hall sensor 1.6 or brake position Hall sensor 1.7 is limited in corresponding
Sensor is installed on slideway 1.11；
On the shell of brake releasing position Hall sensor 1.6 and brake position Hall sensor 1.7
Be threaded with positioning bolt, the head end of the positioning bolt directly withstands sensor installation slideway 1.11, positioning bolt with
Shell can be fixed on any predetermined position of sensor installation slideway 1.11 by positive stop strip cooperation.Carrying out brake releasing position
In the installation process of Hall sensor 1.6 and brake position Hall sensor 1.7, brake releasing position hall sensing
Device 1.6 and brake position Hall sensor 1.7 can be installed in corresponding sensor to be slided on slideway 1.11, is being reached
Behind designated mounting position, Hall sensor package can be fixed on sensing by screwed in place bolt, positioning bolt and positive stop strip cooperation
Device is installed on slideway 1.11, and the installation of Hall sensor is completed.
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.
When the utility model is used, the sensor housing 1.1 of each brake displacement detecting sensor 1 is fixed on corresponding water
On the pedestal 4.1 of turbine generator group brake 4, the top of the stroke lever 1.3 of each brake displacement detecting sensor 1 is for leading to
Cross the brake block 4.2 that support bar 5 directly withstands brake of hydroelectric generating set 4.
The course of work when the utility model is used 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, unit 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 step 3, programmable logic controller (PLC) 2 monitors the data that each each brake displacement detecting sensor 1 exports
Range, when the data area exported there are some brake displacement detecting sensor 1 is not in preset normal operation of sensor number
When according in range, programmable logic controller (PLC) 2 sends the brake displacement detecting to turbine-generator units remote control terminal 3 and passes
The signal of 1 failure of sensor, meanwhile, if there is the system failure inside programmable logic controller (PLC) 2, programmable logic controller (PLC)
2 also send the signal of programmable logic controller (PLC) failure to turbine-generator units remote control terminal 3.
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 (5)
1. a kind of brake of hydroelectric generating set is displaced automatic detection sensor, it is characterised in that: it 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), stroke lever (1.3) side wall
Equipped with encoder gear (1.13) matched rack gear (1.14).
2. brake of hydroelectric generating set according to claim 1 is displaced automatic detection sensor, it is characterised in that: described
Coder module (1.8) includes encoder housing (1.15), encoder gear (1.13), rotation 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 sensor housing
(1.1) on, encoder gear (1.13) are installed in one end of rotation shaft coupling (1.16), and the other end of rotation shaft coupling (1.16) installs rotation
Turn bipolar magnet (1.18), the non-contact type rotary encoder (1.17) be mounted in encoder housing (1.15) and with rotation
Bipolar magnet (1.18) matches, and rotation shaft coupling (1.16) is mounted in encoder housing (1.15) by bearing (1.19), compiles
Code device gear (1.13) is located in gear chamber (1.12), and the communication ends of non-contact type rotary encoder (1.17) are for output pair
Answer brake of hydroelectric generating set displacement data.
3. brake of hydroelectric generating set according to claim 1 is displaced automatic detection sensor, it is characterised in that: described
The signal output end of brake releasing position Hall sensor (1.6) and brake position Hall sensor (1.7) difference
Connect programmable logic controller (PLC) (2) corresponding brake of hydroelectric generating set opening and closing signal input terminal, each coder module
(1.8) communication ends successively access the brake of hydroelectric generating set position of programmable logic controller (PLC) (2) by putting in order hand in hand
Shifting amount communication ends.
4. brake of hydroelectric generating set according to claim 1 is displaced automatic detection sensor, it is characterised in that: described
Dust-proof seal ring (1.20) are equipped between through-hole (1.10) and stroke lever (1.3), the dust-proof seal ring (1.20) is fixed on logical
On hole (1.10) inner wall.
5. brake of hydroelectric generating set according to claim 1 is displaced automatic detection sensor, it is characterised in that: described
The top of stroke lever (1.3) is hemispherical measuring head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821502410.6U CN208671908U (en) | 2018-09-13 | 2018-09-13 | Brake of hydroelectric generating set is displaced automatic detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821502410.6U CN208671908U (en) | 2018-09-13 | 2018-09-13 | Brake of hydroelectric generating set is displaced automatic detection sensor |
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| Publication Number | Publication Date |
|---|---|
| CN208671908U true CN208671908U (en) | 2019-03-29 |
Family
ID=65842877
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821502410.6U Active CN208671908U (en) | 2018-09-13 | 2018-09-13 | Brake of hydroelectric generating set is displaced automatic detection sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514104A (en) * | 2019-08-16 | 2019-11-29 | 河南宝合元汽车配件有限公司 | A kind of magnetic railings ruler fixing bolt anti-drop device |
| CN111156879A (en) * | 2020-03-16 | 2020-05-15 | 江山跟政科技有限公司 | Rod end face blind hole depth detection device |
| CN112611346A (en) * | 2020-12-11 | 2021-04-06 | 广西电网有限责任公司桂林供电局 | Positioning special tool for energy storage shaft of Siemens mechanism |
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2018
- 2018-09-13 CN CN201821502410.6U patent/CN208671908U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514104A (en) * | 2019-08-16 | 2019-11-29 | 河南宝合元汽车配件有限公司 | A kind of magnetic railings ruler fixing bolt anti-drop device |
| CN111156879A (en) * | 2020-03-16 | 2020-05-15 | 江山跟政科技有限公司 | Rod end face blind hole depth detection device |
| CN112611346A (en) * | 2020-12-11 | 2021-04-06 | 广西电网有限责任公司桂林供电局 | Positioning special tool for energy storage shaft of Siemens mechanism |
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