CN114838922A - Power station flat gate state detection device - Google Patents
Power station flat gate state detection device Download PDFInfo
- Publication number
- CN114838922A CN114838922A CN202210355633.9A CN202210355633A CN114838922A CN 114838922 A CN114838922 A CN 114838922A CN 202210355633 A CN202210355633 A CN 202210355633A CN 114838922 A CN114838922 A CN 114838922A
- Authority
- CN
- China
- Prior art keywords
- gate
- flat gate
- state
- dam body
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/06—Barriers therefor construed for applying processing agents or for collecting pollutants, e.g. absorbent
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
- E02B7/34—Flash- boards for vertical-lift gates
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Barrages (AREA)
Abstract
The utility model provides a power station flat gate state detection device, dam body and flat gate including sliding contact, one side lateral wall of flat gate is equipped with vertical news-sending magnetic column along the vertical direction, the dam body lateral wall just is equipped with a plurality of micro-gap switches to news-sending magnetic column department, micro-gap switch is from last to distributing down, when flat gate falls down, thereby the magnetic force that news-sending magnetic column produced makes micro-gap switch action change on-off state, the micro-gap switch's that distributes down from last state can indicate flat gate current position. Through non-contact detection, the state of the flat gate is effectively displayed, and whether the flat gate is in a rising state or a falling state and the synchronism of the two sides can be judged.
Description
Technical Field
The invention relates to the technical field of flat gate control, in particular to a hydropower station flat gate state detection device.
Background
The flat gate is a water retaining facility commonly used in hydropower stations. The hydropower station is designed to have a multi-hole inflow according to each unit, 1 working gate is arranged at each hole opening, each working gate comprises a plurality of gates, and the gates are lifted by a gate machine at the top of the dam. The quantity of the large hydropower station working gates is large according to the number of the hydropower station installed capacity units, and the number of the large hydropower station working gates is not large. The gates are the same in size and can be used commonly.
At present, the use and transaction records of the gate are mainly completed by manual records. Because lifting and falling of the gate need participation of a plurality of people, the number of the gates is large, and part of the gates can fall below the water surface, so that the situation of inaccurate gate position recording can often occur after operation of last ten years, and inconvenience is brought to regular maintenance work of the gate.
For example, chinese patent document CN 208792266U describes a system for accurately controlling a flat gate, which accurately obtains position data of the gate by acquiring displacement data of the gate in real time through a pull rope displacement sensor, thereby avoiding the situation that the gate is pushed or closed incompletely, and realizing accurate control of the gate. But use stay cord sensor to receive mechanical failure's restriction and the influence of rivers impact, inside spring stress changes and leads to the precision to detract from or even damage, and the reliability can not be ensured, and the gate of dam is numerous, and very little fault rate also can lead to the gate control trouble of a relatively large amount.
Disclosure of Invention
The invention aims to provide a hydropower station flat gate state detection device which can automatically detect the state of a flat gate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a power station flat gate state detection device, dam body and flat gate including sliding contact, one side lateral wall of flat gate is equipped with vertical news-sending magnetic column along the vertical direction, the dam body lateral wall just is equipped with a plurality of micro-gap switches to news-sending magnetic column department, micro-gap switch is from last to distributing down, when flat gate falls down, thereby the magnetic force that news-sending magnetic column produced makes micro-gap switch action change on-off state, the micro-gap switch's that distributes down from last state can indicate flat gate current position.
In an optimal scheme, vertical signaling magnetic columns are arranged on the side walls of the two sides of the flat gate, a plurality of micro switches are arranged on the side walls of the two sides of the corresponding dam body, and the micro switches on the two sides are the same in number.
The dam body is provided with a plurality of flat gates, a local information processing device is arranged on the dam body beside each flat gate, the local information processing device is electrically connected with the micro switches on the side walls of the two sides of the dam body, the local information processing device is in communication connection with a remote centralized control center, and the local information processing device detects the states and the action time of the micro switches on the two sides and judges the current action state of the flat gates and the synchronism of the lifting of the two sides.
Vertical contact blocks are arranged on two sides of the flat gate, a plurality of rollers are arranged on the side surface of each contact block along the water flow direction along the vertical direction, a signaling block is arranged on the outer end surface of each contact block, and a signaling magnetic column is arranged on the side wall of each signaling block;
the dam body on be equipped with the spout, gyro wheel and spout lateral wall rolling contact, the spout outer end is equipped with the inductive switch groove, micro-gap switch installs along inductive switch groove lateral wall vertical direction, the signal transmission piece inlays in the inductive switch inslot.
The microswitch structure is as follows: the vacuum sealing tube comprises a static contact and a moving contact, wherein the moving contact is provided with a metal elastic sheet, when the vacuum sealing tube is not subjected to an external force, the metal elastic sheet is in a tilting state, the static contact is not in contact with the moving contact, when the metal elastic sheet is changed into a straight line with other parts of the moving contact under the action of a magnetic force, the static contact is in contact with the moving contact, and an insulating layer is arranged at the joint of the static contact and the moving contact and the end part of the vacuum sealing tube.
The front end of the flat gate opposite to the water flow direction is provided with a magnetic trash rack, the magnetic trash rack is arranged at two ends of a gap for placing the flat gate on the dam body, and the magnetic trash rack is a grid body made of magnetic materials.
The utility model provides a power station flat gate state detection device, including sliding contact's dam body and flat gate, one side lateral wall of flat gate is equipped with a plurality of passive RFID labels along the vertical direction, the position information that the label was pasted is stored to the passive RFID label, the dam body lateral wall is just being equipped with the RFID read write line to passive RFID label department top, thereby the RFID read write line is used for reading the information of passive RFID label and judges current flat gate state, judge through the different passive RFID label information of judging successively reading whether the flat gate is in ascending or descending state.
The side walls of the two sides of the flat gate are provided with a plurality of passive RFID tags, the number of the passive RFID tags is equal, and the side walls of the two sides of the corresponding dam body are respectively provided with an RFID reader-writer.
According to the hydropower station flat gate state detection device, the combination of the signaling magnetic column and the microswitch or the RFID reader-writer and the passive RFID tag is adopted, the state of the flat gate is effectively displayed through non-contact detection, and the rising state or the falling state and the synchronism of two sides of the flat gate can be judged.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a structural cross-sectional view of the present invention;
FIG. 3 is a structural cross-sectional view of a preferred embodiment of the present invention;
FIG. 4 is a sectional view of the microswitch;
FIG. 5 is a structural view of the flat gate;
FIG. 6 is a block diagram of a dam;
FIG. 7 is a schematic view of a magnetic trash rack;
FIG. 8 is a schematic diagram of a flat gate structure using the preferred RFID solution of the present invention;
fig. 9 is a schematic diagram of a dam structure adopting the preferred RFID scheme of the present invention.
Wherein: the device comprises a dam body 1, a sliding groove 11, an inductive switch groove 12, a flat gate 2, a contact block 21, a signaling block 22, a roller 3, a signaling magnetic column 4, a microswitch 5, a vacuum sealing pipe 51, a static contact 52, a movable contact 53, a lifting hanging ring 6, a local information processing device 7, a magnetic trash rack 8, a passive RFID tag 9 and an RFID reader-writer 10.
Detailed Description
As shown in fig. 1 and 2, a power station flat gate state detection device, dam body 1 and flat gate 2 including sliding contact, one side lateral wall of flat gate 2 is equipped with vertical signalling magnetic column 4 along the vertical direction, dam body 1 lateral wall is just being equipped with a plurality of micro-gap switches 5 to signalling magnetic column 4 department, micro-gap switches 5 distribute from last to bottom, when flat gate 2 fell down, thereby the magnetic force that signalling magnetic column 4 produced makes micro-gap switches 5 move and change the on-off state, the state of micro-gap switches 5 from last to distributing can show flat gate 2 current position.
The signaling magnetic column 4 and the micro switch 5 adopt non-contact signaling action, the micro switch is driven to act by the action of a magnetic field to change the state, and the micro switch are not mechanically connected, so the failure rate is low, the number of the micro switches 5 can be selected according to the detection precision of the state of the flat gate, and the number of the micro switches 5 can be properly increased or reduced.
Preferably, as shown in fig. 3, the two side walls of the flat gate 2 are provided with vertical signaling magnetic columns 4, and the two side walls of the corresponding dam body 1 are provided with a plurality of micro switches 5, and the number of the micro switches 5 on the two sides is the same.
Through all setting up signaling magnetic column 4 and micro-gap switch 5 at both sides lateral wall, can detect the both sides position of bulkhead gate 2 to prevent that bulkhead gate 2 from appearing the jamming phenomenon and leading to both sides action asynchronous, detect the synchronism in bulkhead gate both sides through the time sequence of the micro-gap switch 5's that detects both sides action.
As shown in fig. 1, a plurality of flat gates 2 are arranged on the dam body 1, a local information processing device 7 is arranged on the dam body 1 beside each flat gate 2, the local information processing device 7 is electrically connected with the micro switches 5 on the side walls of the two sides of the dam body 1, the local information processing device 7 is in communication connection with a remote centralized control center, and the local information processing device 7 detects the states and the operation time of the micro switches 5 on the two sides and judges the current operation state of the flat gates 2 and the synchronism of the lifting of the two sides.
As shown in fig. 5 and 6, vertical contact blocks 21 are arranged on two sides of the flat gate 2, a plurality of rollers 3 are arranged on the side surfaces of the contact blocks 21 along the water flow direction along the vertical direction, a signaling block 22 is arranged on the outer end surface of each contact block 21, and a signaling magnetic column 4 is arranged on the side wall of each signaling block 22;
The dam body 1 on be equipped with spout 11, gyro wheel 3 and 11 lateral walls rolling contact of spout, 11 outer ends in spout are equipped with inductive switch groove 12, micro-gap switch 5 installs along the 12 lateral walls vertical direction in inductive switch groove, signaling block 22 inlays in inductive switch groove 12.
The effect of rivers makes gyro wheel 3 and 11 lateral walls in close contact with of spout, and the setting up of gyro wheel 3 makes the frictional force between gate and the dam body littleer for the lift action is more smooth and easy.
As shown in fig. 4, the microswitch 5 has the following structure: the vacuum tube 51 is provided with a fixed contact 52 and a movable contact 53, the movable contact 53 is provided with a metal elastic sheet, when the vacuum tube 51 is free from external force, the metal elastic sheet is in a tilting state, the fixed contact 52 is not in contact with the movable contact 53, when the metal elastic sheet is changed into a straight line with other parts of the movable contact 53 under the action of magnetic force, the fixed contact 52 is in contact with the movable contact 53, and the joint of the fixed contact 52 and the movable contact 53 with the end part of the vacuum tube 51 is provided with an insulating layer.
The vacuum environment in the vacuum sealed tube 51 can reduce the influence of air heating or magnetism, so that the action of the movable contact 53 is more reliable, and the leading-out wires at the two ends of the vacuum sealed tube 51 are electrically connected with the local information processing device 7.
As shown in fig. 7, the flat gate 2 is provided with magnetic trash racks 8 at the front end opposite to the water flow direction, the magnetic trash racks 8 are installed at both ends of the gap of the dam 1 where the flat gate 2 is placed, and the magnetic trash racks 8 are made of magnetic materials.
Through the magnetic trash rack 8, the magnetic substances in the water flow can be filtered out firstly, and the influence on the magnetic field caused by the adhesion of the magnetic substances on the signaling magnetic column 4 is avoided.
As shown in fig. 8 and 9, a device for detecting the state of a sluice gate in a hydropower station comprises a dam body 1 and the sluice gate 2 which are in sliding contact, wherein a plurality of passive RFID tags 9 are arranged on the side wall of one side of the sluice gate 2 in the vertical direction, the passive RFID tags 9 store position information of the tags, an RFID reader-writer 10 is arranged on the side wall of the dam body 1, which is opposite to the top end of the passive RFID tags 9, the RFID reader-writer 10 is used for reading the information of the passive RFID tags 9 so as to judge the current state of the sluice gate 2, and the sluice gate 2 is judged to be in a rising state or a falling state by judging the successively read information of different passive RFID tags 9.
The RFID reader-writer 10 is in contactless connection with the passive RFID label 9, the structure is simple and reliable, and the position information carried by the passive RFID label 9 can be used for the RFID reader-writer 10 to judge the current gate position.
The side walls of the two sides of the flat gate 2 are provided with a plurality of passive RFID tags 9, the number of the passive RFID tags 9 is equal, and the side walls of the two sides of the corresponding dam body 1 are respectively provided with an RFID reader-writer 10.
Through all setting up RFID read write line 10 and passive RFID label 9 at both sides lateral wall, can detect the both sides position of bulkhead gate 2 to prevent that bulkhead gate 2 from appearing the jamming phenomenon and leading to both sides action asynchronous, detect the synchronism in bulkhead gate both sides through the time sequence of the passive RFID label 9 in both sides that detects.
Claims (8)
1. The utility model provides a power station flat gate state detection device, dam body (1) and flat gate (2) including sliding contact, a serial communication port, one side lateral wall of flat gate (2) is equipped with vertical signaling magnetic column (4) along the vertical direction, dam body (1) lateral wall just is equipped with a plurality of micro-gap switch (5) to signaling magnetic column (4) department, micro-gap switch (5) are from last to distributing down, when flat gate (2) fall down, the magnetic force that signaling magnetic column (4) produced makes micro-gap switch (5) action change on-off state, the current position of flat gate (2) can be represented to the state of micro-gap switch (5) from last to distributing down.
2. The device for detecting the state of the sluice gate of the hydropower station according to claim 1, wherein the two side walls of the sluice gate (2) are provided with vertical signaling magnetic columns (4), the two side walls of the corresponding dam body (1) are provided with a plurality of micro switches (5), and the number of the micro switches (5) at the two sides is the same.
3. The hydropower station flat gate state detection device according to claim 2, wherein a plurality of flat gates (2) are arranged on the dam body (1), a local information processing device (7) is arranged on the dam body (1) beside each flat gate (2), the local information processing device (7) is electrically connected with the micro switches (5) on the side walls of the two sides of the dam body (1), the local information processing device (7) is in communication connection with a remote centralized control center, and the local information processing device (7) detects the states and the action time of the micro switches (5) on the two sides and judges the current action state of the flat gates (2) and the synchronism of the lifting of the two sides.
4. The hydropower station flat gate state detection device according to claim 3, wherein vertical contact blocks (21) are arranged on two sides of the flat gate (2), a plurality of rollers (3) are arranged on the side surfaces of the contact blocks (21) along the water flow direction along the vertical direction, a signaling block (22) is arranged on the outer end surface of each contact block (21), and a signaling magnetic column (4) is arranged on the side wall of each signaling block (22);
the dam body (1) on be equipped with spout (11), gyro wheel (3) and spout (11) lateral wall rolling contact, spout (11) outer end is equipped with inductive switch groove (12), micro-gap switch (5) are installed along inductive switch groove (12) lateral wall vertical direction, signaling block (22) inlay in inductive switch groove (12).
5. The device for detecting the state of the sluice gate of the hydropower station according to claim 4, wherein the microswitch (5) is structured as follows: the vacuum sealing tube (51) comprises a static contact (52) and a moving contact (53), wherein the static contact (52) and the moving contact (53) are arranged in the vacuum sealing tube (51), a metal elastic sheet is arranged on the moving contact (53), when the metal elastic sheet is not influenced by external force, the metal elastic sheet is in a tilting state, the static contact (52) is not contacted with the moving contact (53), when the metal elastic sheet is changed into a straight line with other parts of the moving contact (53) under the action of magnetic force, the static contact (52) is contacted with the moving contact (53), and an insulating layer is arranged at the joint of the static contact (52) and the moving contact (53) and the end part of the vacuum sealing tube (51).
6. The device for detecting the state of the flat gate of the hydropower station according to claim 5, wherein the front end of the flat gate (2) opposite to the water flow direction is provided with a magnetic trash rack (8), the magnetic trash rack (8) is arranged at two ends of a gap on the dam body (1) for placing the flat gate (2), and the magnetic trash rack (8) is a grid body made of magnetic materials.
7. The utility model provides a power station plate gate state detection device, dam body (1) and plate gate (2) including sliding contact, a serial communication port, one side lateral wall of plate gate (2) is equipped with a plurality of passive RFID label (9) along the vertical direction, passive RFID label (9) storage has the positional information that the label was pasted, dam body (1) lateral wall just is equipped with RFID read write line (10) to passive RFID label (9) department top, thereby RFID read write line (10) are used for reading passive RFID label (9) information and judge current plate gate (2) state, judge through the different passive RFID label (9) information of judging successively reading whether plate gate (2) are in ascending or decline state.
8. The hydropower station flat gate state detection device according to claim 5, wherein the side walls of the flat gate (2) on both sides are provided with a plurality of passive RFID tags (9), the number of the passive RFID tags (9) is equal, and the corresponding dam body (1) is provided with an RFID reader-writer (10) on each side wall on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210355633.9A CN114838922A (en) | 2022-04-06 | 2022-04-06 | Power station flat gate state detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210355633.9A CN114838922A (en) | 2022-04-06 | 2022-04-06 | Power station flat gate state detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114838922A true CN114838922A (en) | 2022-08-02 |
Family
ID=82564289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210355633.9A Pending CN114838922A (en) | 2022-04-06 | 2022-04-06 | Power station flat gate state detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114838922A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085094U (en) * | 1990-08-14 | 1991-09-18 | 山西太原钢铁公司 | Position test switch with magnetic indication |
| JP2002333079A (en) * | 2001-05-09 | 2002-11-22 | Kubota Corp | Valve opening detecting device |
| CN104697482A (en) * | 2015-03-11 | 2015-06-10 | 武汉静磁栅机电制造有限公司 | Long-distance displacement detection device based on RFID (Radio Frequency Identification Devices) |
| CN105824258A (en) * | 2016-04-22 | 2016-08-03 | 徐州工程学院 | Intelligent gate opening degree measurement and control system |
| CN206554034U (en) * | 2017-03-02 | 2017-10-13 | 蚌埠学院 | A kind of water conservancy gate openness measuring device |
| CN208792266U (en) * | 2019-03-04 | 2019-04-26 | 大唐云南发电有限公司 | Bulkhgead gate accuracy-control system |
| CN210862722U (en) * | 2019-07-04 | 2020-06-26 | 河北昊宇水工机械工程有限公司 | Non-contact gate opening and attitude detection device |
| CN211141204U (en) * | 2019-09-13 | 2020-07-31 | 惠州学院 | Elevator well safety coefficient and use elevator system of this system |
| CN212303443U (en) * | 2020-07-08 | 2021-01-05 | 陕西新通宇彤智能科技有限公司 | Electromagnetic switch with position detection function |
| CN213301111U (en) * | 2020-11-10 | 2021-05-28 | 宁波弘泰水利信息科技有限公司 | Improved generation gate aperture collection system |
| CN214793274U (en) * | 2021-04-06 | 2021-11-19 | 四川华能宝兴河水电有限责任公司 | Hydropower station gate state on-line monitoring device |
| CN215598349U (en) * | 2021-05-30 | 2022-01-21 | 中国长江电力股份有限公司 | Quick opening measuring device for water inlet of giant hydroelectric generating set |
-
2022
- 2022-04-06 CN CN202210355633.9A patent/CN114838922A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085094U (en) * | 1990-08-14 | 1991-09-18 | 山西太原钢铁公司 | Position test switch with magnetic indication |
| JP2002333079A (en) * | 2001-05-09 | 2002-11-22 | Kubota Corp | Valve opening detecting device |
| CN104697482A (en) * | 2015-03-11 | 2015-06-10 | 武汉静磁栅机电制造有限公司 | Long-distance displacement detection device based on RFID (Radio Frequency Identification Devices) |
| CN105824258A (en) * | 2016-04-22 | 2016-08-03 | 徐州工程学院 | Intelligent gate opening degree measurement and control system |
| CN206554034U (en) * | 2017-03-02 | 2017-10-13 | 蚌埠学院 | A kind of water conservancy gate openness measuring device |
| CN208792266U (en) * | 2019-03-04 | 2019-04-26 | 大唐云南发电有限公司 | Bulkhgead gate accuracy-control system |
| CN210862722U (en) * | 2019-07-04 | 2020-06-26 | 河北昊宇水工机械工程有限公司 | Non-contact gate opening and attitude detection device |
| CN211141204U (en) * | 2019-09-13 | 2020-07-31 | 惠州学院 | Elevator well safety coefficient and use elevator system of this system |
| CN212303443U (en) * | 2020-07-08 | 2021-01-05 | 陕西新通宇彤智能科技有限公司 | Electromagnetic switch with position detection function |
| CN213301111U (en) * | 2020-11-10 | 2021-05-28 | 宁波弘泰水利信息科技有限公司 | Improved generation gate aperture collection system |
| CN214793274U (en) * | 2021-04-06 | 2021-11-19 | 四川华能宝兴河水电有限责任公司 | Hydropower station gate state on-line monitoring device |
| CN215598349U (en) * | 2021-05-30 | 2022-01-21 | 中国长江电力股份有限公司 | Quick opening measuring device for water inlet of giant hydroelectric generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203038124U (en) | Liquid level controller | |
| CN103216172A (en) | Self-learning method of anti-pinch parameters of electric car window | |
| CN114838922A (en) | Power station flat gate state detection device | |
| CN208282901U (en) | A kind of liquid level detecting device | |
| CN112411678A (en) | Sensing module for detecting leakage of tap water pipeline | |
| CN206603306U (en) | A kind of intelligent clothing streamline | |
| CN207344551U (en) | A kind of flow line production part rack and wall-hung boiler assembly station | |
| CN207147592U (en) | Automobile oil level sensor | |
| CN214278446U (en) | Magnetite prospecting instrument | |
| CN104239912A (en) | Financial self-service equipment card returning device and card returning method | |
| CN209524985U (en) | A kind of single switch two point form liquidometer | |
| CN1464291A (en) | Liquid level sensing device | |
| CN203100825U (en) | Sump water level measuring device for coal mine | |
| CN202885768U (en) | Magnetic grid detection device for synchronization of boarding-bridge elevating mechanism | |
| CN210401634U (en) | Fill diamagnetism ability detection device of IC-card for electric pile | |
| CN108033250B (en) | Conveying detection device for photovoltaic junction box | |
| CN220532272U (en) | Automatic GNG machine magnetic force breaks away from judgment mechanism | |
| CN104462618A (en) | Method and device for automatically recording hook numbers of high wire coil | |
| CN213847208U (en) | Controller with port protection function for Internet of things | |
| CN206221002U (en) | A kind of Multifunctional mining safety monitoring assembly | |
| CN212110191U (en) | Barreled water level detection device | |
| CN219039932U (en) | Stainless steel unit plate with cleaning function | |
| CN116295168B (en) | Bearing outer ring stop groove detection device for new energy automobile | |
| CN210721653U (en) | Automatic vending machine clout stock induction system | |
| CN218057170U (en) | Signal detection mechanism of silk spindle transfer chain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |