CN113112756A - Emergent early warning device of landslide of high accuracy - Google Patents

Emergent early warning device of landslide of high accuracy Download PDF

Info

Publication number
CN113112756A
CN113112756A CN202110255957.0A CN202110255957A CN113112756A CN 113112756 A CN113112756 A CN 113112756A CN 202110255957 A CN202110255957 A CN 202110255957A CN 113112756 A CN113112756 A CN 113112756A
Authority
CN
China
Prior art keywords
strip
cavity
partition
pull rope
partition sheet
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.)
Granted
Application number
CN202110255957.0A
Other languages
Chinese (zh)
Other versions
CN113112756B (en
Inventor
黄帅
黄明明
王安琪
杨飞华
郑永超
姜元俊
吕悦军
沙海军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou University
Institute of Mountain Hazards and Environment IMHE of CAS
Beijing Building Materials Academy of Sciences Research
National Institute of Natural Hazards
Original Assignee
Guizhou University
Institute of Mountain Hazards and Environment IMHE of CAS
Beijing Building Materials Academy of Sciences Research
National Institute of Natural Hazards
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guizhou University, Institute of Mountain Hazards and Environment IMHE of CAS, Beijing Building Materials Academy of Sciences Research, National Institute of Natural Hazards filed Critical Guizhou University
Priority to CN202110255957.0A priority Critical patent/CN113112756B/en
Publication of CN113112756A publication Critical patent/CN113112756A/en
Application granted granted Critical
Publication of CN113112756B publication Critical patent/CN113112756B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/10Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

The invention provides a high-precision landslide emergency early warning device which comprises a fixed disc, wherein an installation cavity and a contact cavity are arranged in the fixed disc, the fixed disk is horizontally arranged, one side of the fixed disk is provided with a fixed foot connected with the ground, the contact cavity is annular, the mounting cavity is positioned at the inner side of the contact cavity, the central axis of the contact cavity is horizontally arranged, the left side and the right side of the center of the contact cavity are respectively provided with a first partition sheet, the first partition sheets can partition the contact cavity on the two sides, the two first partition sheets are arranged at the same height, the left side and the right side of the center of the contact cavity are respectively provided with a second partition sheet, the second partition sheets can partition the contact cavity on the two sides, the two second partition sheets are arranged at the same height, and the second partition sheets are lower than the first partition sheets.

Description

Emergent early warning device of landslide of high accuracy
Technical Field
The invention relates to a high-precision landslide emergency early warning device.
Background
The existing landslide deep early warning generally detects displacement data of landslide through an inclinometer, the inclinometer monitors deep horizontal displacement of rock-soil body by measuring included angle variation between an axis of an inclinometer pipe and a plumb line, and then early warns the landslide, but the landslide forms more factors, the displacement data of the landslide is detected only through the inclinometer, and then the landslide is early warned, and the problem that early warning results are inaccurate due to single early warning factor exists.
Disclosure of Invention
Aiming at the problems pointed out in the background technology, the invention provides a high-precision landslide emergency early warning device.
The technical scheme of the invention is realized as follows:
a high-precision landslide emergency early warning device comprises a fixed disc, wherein an installation cavity and a contact cavity are arranged in the fixed disc, the fixed disc is horizontally arranged, and one side of the fixed disc is provided with a fixed foot connected with the ground;
the contact cavity is annular, the installation cavity is positioned at the inner side of the contact cavity, the central axis of the contact cavity is horizontally arranged, the left side and the right side of the center of the contact cavity are respectively provided with a first partition sheet, the first partition sheet can separate the contact cavities at the two sides of the contact cavity, the first partition sheets are arranged at equal height, the left side and the right side of the center of the contact cavity are respectively provided with a second partition sheet, the second partition sheets can separate the contact cavities at the two sides of the contact cavity, the second partition sheets are arranged at equal height, and the second partition sheets are lower than the first partition sheets;
the device is characterized by further comprising a first pull rope, wherein one end of the first pull rope extends into the contact cavity from the side wall of the fixed disk between the first partition sheet and the second partition sheet, one end of the first pull rope penetrates through the first partition sheet and extends into the contact cavity on the upper side of the first partition sheet, one end of the first pull rope is provided with a first pulling strip, and the other end of one end of the first pull rope is connected with a first inserting strip;
the device is characterized by further comprising a second pull rope, wherein one end of the second pull rope extends into the contact cavity from the side wall of the fixed disk on the lower side of the second partition sheet, one end of the second pull rope penetrates through the second partition sheet and extends into the contact cavity between the first partition sheet and the second partition sheet, one end of the second pull rope is provided with a second pulling strip, and the other end of the two ends of the second pull rope is connected with a second inserting strip;
the wireless sensor, the battery, the first electric contact strip and the second electric contact strip are arranged in the mounting cavity, the first electric contact strip and the second electric contact strip are both vertically arranged, one ends of the first electric contact strip and the second electric contact strip extend into the contact cavity, one ends of the first electric contact strip and the second electric contact strip extend to the position of the lower end of the contact cavity, the upper ends of the first electric contact strip and the second electric contact strip are located in the mounting cavity, and the first electric contact strip, the wireless sensor, the battery and the second electric contact strip are sequentially and electrically connected;
liquid mercury is contained in the contact cavity between the left partition sheet and the right partition sheet.
The invention is further arranged in such a way that a third partition piece is arranged between the first electric contact strip and the second electric contact strip in the contact cavity, and the invention further comprises a third pull rope, wherein one end of the third pull rope penetrates into the contact cavity from the side wall of the fixed disk between the third partition piece and the second partition piece, one end of the third pull rope penetrates into the other side of the third partition piece from one side of the third partition piece, one end of the third pull rope is provided with a third pulling strip, and the other end of the third pull rope is connected with a third inserting strip.
The invention is further provided that the first partition plate, the second partition plate and the third partition plate are made of thin films or tinfoil.
The invention is further provided that the first pull rope, the second pull rope and the third pull rope are all made of iron wires.
The invention is further provided that the lower end of the insertion rod is arranged in a conical shape.
The invention is further arranged in that the fixed disc is of a circular structure, the fixed disc is provided with breaking grooves, lugs are respectively fixed on the breaking grooves on the two sides of the fixed disc, the fixed lugs are provided with connecting holes, the connecting holes are connected with fastening screws, and the fastening screws are connected with fastening nuts.
By adopting the technical scheme, the invention has the beneficial effects that:
the landslide early warning device with low false alarm rate provided by the invention has the advantages that when liquid mercury flows to the lower side of the contact cavity and is in contact with the first electric contact strip and the second electric contact strip, the first electric contact strip and the second electric contact strip are electrically connected through the liquid mercury, so that a loop where a wireless sensor and a battery are located is conducted, the wireless sensor can send out an alarm signal, and when the liquid mercury flows downwards to the lower end of the contact cavity, the first partition sheet, the second partition sheet and the third partition sheet are damaged through the pull rope, so that the alarm can be given out only by the action of at least three pull ropes, and false alarms can be reduced. During the use, fixed disk and ground fixed connection, the other end of stay cord is drawn to the position of keeping away from the fixed disk to it is fixed with domatic grafting through grafting strip, when that region takes place the landslide domatic like this, will stimulate the stay cord in this region, and the stay cord is dragged, will destroy the partition piece through the strip that drags above that, and liquid mercury just can flow downwards like this.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a schematic structural view of a break groove formed on the fixed disk of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is described below with reference to fig. 1-4:
the utility model provides an emergent early warning device of landslide of high accuracy, includes fixed disk 1, fixed disk 1 in be equipped with installation cavity 2 and contact cavity 3, 1 level of fixed disk set up, one side of fixed disk 1 is equipped with fixed foot 4 of being connected with ground. The fixing feet 4 can be fixedly connected with the ground by means of a plug-in rod, a long screw and the like.
The contact cavity 3 is annular, the mounting cavity 2 is positioned on the inner side of the contact cavity 3, and the central axis of the contact cavity 3 is horizontally arranged.
The left side and the right side of the center of the contact cavity 3 are respectively provided with a first partition sheet 5, the first partition sheets 5 can separate the contact cavities 3 on the two sides, and the two first partition sheets 5 are arranged at equal height.
The left side and the right side of the center of the contact cavity 3 are respectively provided with a partition sheet II 6, the partition sheets II 6 can separate the contact cavities 3 on the two sides, the two partition sheets II 6 are arranged at equal height, and the partition sheets II 6 are lower than the partition sheets I5.
Still include stay cord one 7, the one end of stay cord one 7 stretch into contact cavity 3 from the lateral wall that cuts off fixed disk 1 between piece 5 and the partition piece two 6 in, the one end of stay cord one 7 is passed partition piece one 5 extend to contact cavity 3 of the upside of partition piece one 5 in, the one end of stay cord one 7 be equipped with and pull one 8, the other end of stay cord one 7 end be connected with grafting one 9.
Still include two 10 of stay cord, the one end of two 10 of stay cord stretch into contact chamber 3 from the lateral wall of the fixed disk 1 of two 6 downside of partition piece, the one end of two 10 of stay cord is passed two 6 of partition piece extend in partition piece one 5 and the contact chamber 3 between two 6 of partition piece, the one end of two 10 of stay cord be equipped with and pull two 11, the other end of two 10 ends of stay cord be connected with grafting two 12 of strip
The wireless sensor 13, the battery 14, the first electric contact strip 15 and the second electric contact strip 16 are arranged in the mounting cavity 2, the first electric contact strip 15 and the second electric contact strip 16 are both vertically arranged, one ends of the first electric contact strip 15 and the second electric contact strip 16 extend into the contact cavity 3, one ends of the first electric contact strip 15 and the second electric contact strip 16 extend to the lower end of the contact cavity 3, the upper ends of the first electric contact strip 15 and the second electric contact strip 16 are located in the mounting cavity 2, and the first electric contact strip 15, the wireless sensor 13, the battery 14 and the second electric contact strip are sequentially and electrically connected; liquid mercury is contained in the contact cavity 3 between the left partition sheet 5 and the right partition sheet 5.
Wherein, contact cavity 3 in be located and be equipped with partition piece three 17 between electric contact strip one 15 and the electric contact strip two 16, still include stay cord three 18, the one end of stay cord three 18 penetrates from the lateral wall of partition piece three 17 and partition fixed disk 1 between piece two 6 contact cavity 3 in, the one end of stay cord three 18 penetrates the opposite side of partition piece three 17 from one side of partition piece three 17, the one end of stay cord three 18 be equipped with and pull strip three 22, the other end of stay cord three 18 be connected with grafting strip three 19.
Wherein, the partition sheet I5, the partition sheet II 6 and the partition sheet III 17 are made of thin films or tinfoil.
The first pull rope 7, the second pull rope 10 and the third pull rope 18 are all made of iron wires.
Wherein, the lower end of the insertion rod 4 is arranged in a conical shape.
The fixed disk 1 is of a circular ring-shaped structure, broken grooves 31 are formed in the fixed disk 1, lugs 32 are fixed on the broken grooves 31 on the two sides of the fixed disk 1 respectively, connecting holes are formed in the fixed lugs 32, fastening screws 33 are connected to the connecting holes, and fastening nuts 34 are connected to the fastening screws 33. By adopting the technical scheme, the fixed disk 1 can also be sleeved on a trunk with proper thickness to fix the fixed disk on a tree.
By adopting the technical scheme, the invention has the beneficial effects that:
according to the landslide early warning device with the low false alarm rate, when liquid mercury flows to the lower side of the contact cavity 3 and is in contact with the first electric contact strip 15 and the second electric contact strip 16, the first electric contact strip 15 and the second electric contact strip 16 are electrically connected through the liquid mercury, so that a loop where the wireless sensor 13 and the battery 14 are located is conducted, the wireless sensor 13 can send out an alarm signal, and when the liquid mercury flows downwards to the lower end of the contact cavity 3, the first partition sheet 5, the second partition sheet 6 and the third partition sheet 17 are damaged through the pull ropes, so that the alarm can be given out only by the action of at least three pull ropes, and false alarms can be reduced. During the use, fixed disk 1 is connected with ground, and the other end of stay cord is pulled to the position of keeping away from fixed disk 1 to it is fixed with domatic grafting through grafting strip, when that region takes place the landslide like this, will stimulate the stay cord in this region, and the stay cord is dragged, will destroy the partition piece through the strip of dragging on it, and liquid mercury just can flow downwards like this.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (6)

1. The utility model provides an emergent early warning device of landslide of high accuracy which characterized in that: the fixing plate is horizontally arranged, and one side of the fixing plate is provided with fixing legs connected with the ground;
the contact cavity is annular, the installation cavity is positioned at the inner side of the contact cavity, the central axis of the contact cavity is horizontally arranged, the left side and the right side of the center of the contact cavity are respectively provided with a first partition sheet, the first partition sheet can separate the contact cavities at the two sides of the contact cavity, the first partition sheets are arranged at equal height, the left side and the right side of the center of the contact cavity are respectively provided with a second partition sheet, the second partition sheets can separate the contact cavities at the two sides of the contact cavity, the second partition sheets are arranged at equal height, and the second partition sheets are lower than the first partition sheets;
the device is characterized by further comprising a first pull rope, wherein one end of the first pull rope extends into the contact cavity from the side wall of the fixed disk between the first partition sheet and the second partition sheet, one end of the first pull rope penetrates through the first partition sheet and extends into the contact cavity on the upper side of the first partition sheet, one end of the first pull rope is provided with a first pulling strip, and the other end of one end of the first pull rope is connected with a first inserting strip;
the device is characterized by further comprising a second pull rope, wherein one end of the second pull rope extends into the contact cavity from the side wall of the fixed disk on the lower side of the second partition sheet, one end of the second pull rope penetrates through the second partition sheet and extends into the contact cavity between the first partition sheet and the second partition sheet, one end of the second pull rope is provided with a second pulling strip, and the other end of the two ends of the second pull rope is connected with a second inserting strip;
the wireless sensor, the battery, the first electric contact strip and the second electric contact strip are arranged in the mounting cavity, the first electric contact strip and the second electric contact strip are both vertically arranged, one ends of the first electric contact strip and the second electric contact strip extend into the contact cavity, one ends of the first electric contact strip and the second electric contact strip extend to the position of the lower end of the contact cavity, the upper ends of the first electric contact strip and the second electric contact strip are located in the mounting cavity, and the first electric contact strip, the wireless sensor, the battery and the second electric contact strip are sequentially and electrically connected;
liquid mercury is contained in the contact cavity between the left partition sheet and the right partition sheet.
2. The high-precision landslide emergency early warning device according to claim 1, wherein: contact cavity in lie in and be equipped with between electric contact strip one and the electric contact strip two and separate piece three, still include stay cord three, the one end of stay cord three penetrates from the lateral wall of separating piece three and separating the fixed disk between the piece two contact cavity in, the one end of stay cord three penetrates the opposite side of separating piece three from one side of separating piece three, the one end of stay cord three be equipped with and pull strip three, the other end of stay cord three be connected with grafting strip three.
3. The high-precision landslide emergency early warning device according to claim 1, wherein: the partition sheet I, the partition sheet II and the partition sheet III are made of films or tinfoil.
4. The high-precision landslide emergency early warning device according to claim 1, wherein: the first pull rope, the second pull rope and the third pull rope are all made of iron wires.
5. The high-precision landslide emergency early warning device according to claim 1, wherein: the lower end of the insertion rod is arranged in a conical shape.
6. The high-precision landslide emergency early warning device according to claim 1, wherein: the fixing disc is of a circular ring-shaped structure, broken grooves are formed in the fixing disc, lugs are fixed to the broken grooves on the two sides of the fixing disc respectively, connecting holes are formed in the fixing lugs, fastening screws are connected to the connecting holes, and fastening nuts are connected to the fastening screws.
CN202110255957.0A 2021-03-09 2021-03-09 Emergent early warning device of landslide of high accuracy Active CN113112756B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110255957.0A CN113112756B (en) 2021-03-09 2021-03-09 Emergent early warning device of landslide of high accuracy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110255957.0A CN113112756B (en) 2021-03-09 2021-03-09 Emergent early warning device of landslide of high accuracy

Publications (2)

Publication Number Publication Date
CN113112756A true CN113112756A (en) 2021-07-13
CN113112756B CN113112756B (en) 2023-02-17

Family

ID=76711593

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110255957.0A Active CN113112756B (en) 2021-03-09 2021-03-09 Emergent early warning device of landslide of high accuracy

Country Status (1)

Country Link
CN (1) CN113112756B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116778681A (en) * 2023-08-21 2023-09-19 乐山师范学院 Mountain tourist attraction disaster early warning method and equipment

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000149163A (en) * 1998-11-10 2000-05-30 Eight Consultants Co Ltd Landslide detection device
CN104037495A (en) * 2014-06-27 2014-09-10 重庆大学 L-shaped liquid metal antenna for landslide monitoring
CN104050782A (en) * 2014-06-18 2014-09-17 国网四川省电力公司成都市新都供电分公司 Landslide early warning device
CN206619257U (en) * 2017-03-15 2017-11-07 重庆长江勘测设计院有限公司 Simple landslide monitoring warning device
CN207425076U (en) * 2017-11-24 2018-05-29 深圳市广源达建筑工程有限公司 For the monitoring device of geological disaster
CN109056853A (en) * 2018-08-02 2018-12-21 中国地质大学(武汉) A kind of mechanism of telescopic measurement landslide big displacement
CN209591045U (en) * 2019-01-17 2019-11-05 彭成慧 A kind of mountain landslide supervision prior-warning device
CN110599743A (en) * 2019-10-09 2019-12-20 河南城建学院 Buried landslide early warning device
CN110796830A (en) * 2019-08-24 2020-02-14 深圳市正杰智能工程有限公司 River levee side slope landslide detection device
CN110926392A (en) * 2020-02-20 2020-03-27 杭州鲁尔物联科技有限公司 Landslide displacement monitoring system
CN211044489U (en) * 2019-12-19 2020-07-17 中国地震局地壳应力研究所 Landslide emergency early warning device based on artificial intelligence internet

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000149163A (en) * 1998-11-10 2000-05-30 Eight Consultants Co Ltd Landslide detection device
CN104050782A (en) * 2014-06-18 2014-09-17 国网四川省电力公司成都市新都供电分公司 Landslide early warning device
CN104037495A (en) * 2014-06-27 2014-09-10 重庆大学 L-shaped liquid metal antenna for landslide monitoring
CN206619257U (en) * 2017-03-15 2017-11-07 重庆长江勘测设计院有限公司 Simple landslide monitoring warning device
CN207425076U (en) * 2017-11-24 2018-05-29 深圳市广源达建筑工程有限公司 For the monitoring device of geological disaster
CN109056853A (en) * 2018-08-02 2018-12-21 中国地质大学(武汉) A kind of mechanism of telescopic measurement landslide big displacement
CN209591045U (en) * 2019-01-17 2019-11-05 彭成慧 A kind of mountain landslide supervision prior-warning device
CN110796830A (en) * 2019-08-24 2020-02-14 深圳市正杰智能工程有限公司 River levee side slope landslide detection device
CN110599743A (en) * 2019-10-09 2019-12-20 河南城建学院 Buried landslide early warning device
CN211044489U (en) * 2019-12-19 2020-07-17 中国地震局地壳应力研究所 Landslide emergency early warning device based on artificial intelligence internet
CN110926392A (en) * 2020-02-20 2020-03-27 杭州鲁尔物联科技有限公司 Landslide displacement monitoring system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
曹羽哲等: "韶关滑坡地成因机制分析及其工程治理", 《工程技术》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116778681A (en) * 2023-08-21 2023-09-19 乐山师范学院 Mountain tourist attraction disaster early warning method and equipment
CN116778681B (en) * 2023-08-21 2023-11-07 乐山师范学院 Mountain region tourist attraction calamity early warning equipment

Also Published As

Publication number Publication date
CN113112756B (en) 2023-02-17

Similar Documents

Publication Publication Date Title
US9123230B2 (en) Sewer backup alarm
CN113112756B (en) Emergent early warning device of landslide of high accuracy
CN202468258U (en) Improved water drainage pump control system
CN107265319A (en) A kind of level formula tower crane tower body perpendicularity warning device
CN210375331U (en) Reservoir water level overrun alarm device
CN215573218U (en) Novel low water level liquid level measuring device
CN108578964B (en) Long jump take-off point line-stepping foul detector
CN201141779Y (en) Water-level alarm
CN202600905U (en) Falling-into-water alarm positioning apparatus
CN214252958U (en) Monitoring device for electromechanical equipment
CN205209600U (en) Yellow phosphorus liquid level measurement device
GB2345138A (en) Overflow detector particularly for toilet cistern
CN212254269U (en) Reed pipe liquid level measurement device
CN212693022U (en) Multi-section water level simultaneous monitoring device
CN207141320U (en) A kind of simple ship position indicator
CN109556683A (en) A kind of water level alarm
CN220690218U (en) Water level monitoring alarm device
CN201840720U (en) Medical fluid infusion monitor device
CN211716267U (en) Pipeline structure is adopted in natural gas of intelligence
CN201025451Y (en) Water level annunciator
CN201190307Y (en) Pool with water level alarming
CN206680203U (en) A kind of dual anti-overflow device of water of Laboratory Pure Water machine water receiving
CN210295383U (en) Building intelligent alarm convenient to installation
CN216593659U (en) Automatic drainage alarm structure
CN216566883U (en) Submersible container alarm

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
GR01 Patent grant
GR01 Patent grant