CN107678069B - A kind of GIS device flange installation accurate positioning method and its alarming device used - Google Patents
A kind of GIS device flange installation accurate positioning method and its alarming device used Download PDFInfo
- Publication number
- CN107678069B CN107678069B CN201710648923.1A CN201710648923A CN107678069B CN 107678069 B CN107678069 B CN 107678069B CN 201710648923 A CN201710648923 A CN 201710648923A CN 107678069 B CN107678069 B CN 107678069B
- Authority
- CN
- China
- Prior art keywords
- signal
- flange
- receiver
- mounting hole
- signal receiver
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Manufacturing & Machinery (AREA)
- Emergency Alarm Devices (AREA)
- Audible And Visible Signals (AREA)
Abstract
The invention discloses a kind of GIS device flanges to install accurate positioning method, also disclose a kind of apply and the alarming device in GIS device flange installation accurate positioning method, the alarming device includes the signal projector and signal receiver of at least three groups pairings, signal projector and signal receiver are fixedly arranged on respectively on two flanges of docking and position corresponds, and each signal receiver is connected in a warning circuit.The configuration of the present invention is simple, it is easily achieved, it is cheap practical, it is easy to carry, flange installation condition information can be more intuitively obtained by means of the present invention, flange is more accurately held and sense of propriety is installed, it is ensured that flange can be installed accurately, make the intact docking of conducting rod, avoids aligning not accurate conducting rod damage because of flange, causes deficiencies in electrical conductivity or even influence the operation of GIS device.
Description
Technical field
The present invention relates to a kind of electric power system power transformation equipment installation method and its auxiliary devices used, more specifically, it
It is related to a kind of GIS device flange installation accurate positioning method and its using alarming device.
Background technique
GIS device, i.e. gas-insulated switch combined electrical apparatus, since occupied area is small, insulation performance is good, safe and reliable etc.
Advantage obtains popularization and use energetically in the power system in recent years.In its installation process, when being typically chosen factory according to
Every modularization transport, then each interval module is spliced at the scene, by the connection of external cylinder, internal conduction
Bar is also completed at the same time connection.Currently, loop wheel machine is mostly used substantially to align landing when in-site installation, then GIS is set with crowbar rotation
Standby each section of flange carries out coarse alignment, passes through two flange faces with long bolt or bolt and tentatively fixes, is further continued for finely tuning, then
Screw rod is tightened and completes splicing.During installing at the scene it has been observed that in the splicing of flange face, mostly completely not right
In the case that level is true, docking directly just is completed into the conducting rod insertion among GIS cavity after substantially positioning using long bolt, is had
When in the also slightly inclined situation of several positioning screws just directly carry out grafting, the installation method is relatively coarse, if two
Exist between conducting rod must angular deviation, the conducting rod that will lead to two section inner barrels generates radial stress, on the one hand
Meeting is impaired to the fingertip position of conducting rod, and the card slot for easily leading to fingertip spring is broken, may cause and forms particle electric discharge in cavity；
On the other hand, it will lead to the loosening of conducting rod connection if stress is excessive, when electric current is larger under operation conditions, will form very big
Electric power, cause conducting rod it is further loosening even be broken；Furthermore conducting rod bad connection directly results in conductive contact
It is bad, fever phenomenon can be formed when serious, influence the operation of equipment.
Summary of the invention
Existing GIS device flange installation method is relatively coarse, it is difficult to accurately conclude that whether accurate the flange face of docking is right
Position, it is difficult to ensure the intact docking of conducting rod, to overcome this defect, the present invention provides one kind, and Completion Techniques Lenzin can be assisted to determine
Position installation, and flange face dock completely laggard step card flange face whether exactitude position, it is ensured that the intact docking of conducting rod
The installation of GIS device flange is accurately positioned alarming device.
The technical scheme is that a kind of GIS device flange installs accurate positioning method, comprising the following steps:
A., the installation of GIS device flange is installed on the flange of GIS device and is accurately positioned alarming device, and connects the warning
Circuit, the alarming device include signal emission part and signal receiving part point, and signal emission part and signal receiving part point divide
On two flanges in docking；
B. carry out flanged joint, in turn, uniformly, screw to more rounds each flange bolt, flanged joint registration
When, signal emission part and signal receiving part point form signal path, and warning circuit issues the prompt of monitoring state qualification；
C. begin from generation pressure between flange bolt head and flange, it is ensured that the flange bolt of each round screws behaviour
The installation of GIS device flange is accurately positioned alarming device and all prompts installation process monitoring state qualification after work.
Adopting said method can resolve into the docking operation of flange several stages that can be monitored, and can grasp flange peace in time
The deviation state of dress process makes GIS device flange installation process be easy to rectify a deviation in time, so that it is guaranteed that the installation of GIS device flange
Precision.
A kind of alarming device applied in above-mentioned GIS device flange installation accurate positioning method, including at least three assemble
Pair signal projector and signal receiver, signal projector and signal receiver be fixedly arranged on two flanges of docking respectively and
Position corresponds, and each signal receiver is connected in a warning circuit.Letter is installed on the flange face of two flanges of docking
Number transmitter-receiver device, flange face alignment when, send alarm signal, in this way one side, reach in the docking of flange
More accurate positioning, auxiliary complete flange installation；On the other hand, whether accurate to flange face after two flange faces dock completely
Further verifying is realized in contraposition.3 points can determine a plane, setting at least three groups of signal projectors and signal receiver, Ke Yizhun
The really contraposition accuracy on reflection flange joint surface.Therefore, it is installed by this GIS device flange and is accurately positioned alarming device, it can be with
Flange installation condition information is more intuitively obtained, flange is more accurately held and sense of propriety is installed, it is ensured that flange can be installed accurately, make
The intact docking of conducting rod avoids conducting rod damage, causes deficiencies in electrical conductivity or even influences the operation of GIS device.
Preferably, the signal projector is optical transmitting set, optical transmitting set includes launcher shell, power supply, shine mould
Block and lens, power supply are fixedly arranged on rear end in launcher shell, and lens are fixedly arranged on launcher shell Inner Front End, and light emitting module is fixedly arranged on
Between power supply and lens.Optical transmitting set detects sensitive, precision height using light as the working media of control flange installation accuracy.Hair
Optical module generates the signal projector, is focused by eyeglass, in the end fire light beam of transmitter；Battery is mounted on transmitter
Tail portion, Convenient switch and dismounting.
Preferably, the signal receiver is optical receiver, including receiver casing, window and photo resistance are received,
It receives window and is set to receiver casing front end, photo resistance is set in receiver casing and, photo resistance coaxial with reception window
It is connected in the warning circuit.One aperture of optical receiver end receives the light beam from optical transmitting set, and light beam can be with
So that the resistance value of photo resistance is become smaller suddenly, warning circuit is made to obtain signal variable, and then warning circuit is made to start work.
Preferably, receiver casing rear end face is equipped with a pair of of patch jack, photo resistance both ends pass through conducting wire respectively
It is connect with two patch jacks.Patch jack uses for line between unlike signal receiver, convenient for quickly and easily by each letter
Number receiver connects to form warning circuit.
Preferably, being connected with buzzer in the warning circuit.Entire series loop conducting can be in warning circuit
It issues buzzer to beep, when operating personnel is absorbed in work, and eyes are had no time to attend to other things, operating personnel is reminded with voice signal
Flange has aligned accurately, and operating personnel is made to understand flange installation condition in time.
Preferably, being evenly equipped with signal device mounting hole on the joint surface of flange, signal projector or signal receiver are solid
It is scheduled in signal device mounting hole.Signal projector and signal receiver are evenly arranged on the joint surface of flange, can more fully be supervised
The engagement state of flange different location is surveyed, preferably reflects the integral installation situation of flange.
Preferably, signal projector protrudes from the joint surface of flange, signal receiver is hidden into signal device mounting hole,
Signal projector and the tapered fit structure of signal device mounting hole.Signal projector shape uses pyramidal structure, to adapt to
The signal device mounting hole of different-diameter size.Signal projector and the tapered fit structure of signal device mounting hole are convenient for method
Orchid signal projector during is oriented to by signal device mounting hole, makes the voluntarily centering of signal projector, signal receiver.
As an alternative, signal receiver protrudes from the joint surface of flange, and signal projector is hidden into signal device mounting hole,
Signal receiver and the tapered fit structure of signal device mounting hole.Signal receiver shape uses pyramidal structure, to adapt to
The signal device mounting hole of different-diameter size.Signal receiver and the tapered fit structure of signal device mounting hole are convenient for method
Orchid signal receiver during is oriented to by signal device mounting hole, makes the voluntarily centering of signal projector, signal receiver.
Preferably, the end of signal projector and signal receiver is equipped with miniature lever.Miniature lever is set convenient for signal hair
Plug when emitter and signal receiver are used when installing on flange at signal device mounting hole.
The beneficial effects of the present invention are:
The accuracy for promoting flange docking in GIS device flange installation process, improves the reliability of GIS device installation.It borrows
Flange installation condition information can more intuitively be obtained by helping the present invention, more accurately held flange and installed sense of propriety, it is ensured that flange
Can accurately install, make the intact docking of conducting rod, avoid aligning not accurate conducting rod damage because of flange, cause deficiencies in electrical conductivity or even
Influence the operation of GIS device.
It has the advantages of simple structure and easy realization, it is cheap practical, it is easy to carry.The present invention passes through signal projector and signal receiver
The flange of composition installs auxiliary monitoring device, and component is less and is easy to get, and structure is simple, light and handy, easy for installation, will not obviously increase
GIS device volume.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is distribution schematic diagram of the signal device mounting hole on flange in the present invention；
Fig. 3 is a kind of circuit diagram of warning circuit in the present invention；
Fig. 4 is the structural schematic diagram of receiver casing rear end face in the present invention.
In figure, 1- optical transmitting set, 2- optical receiver, 3- flange, 4- launcher shell, 5- power supply, 6- light emitting module, 7- is saturating
Mirror, 8- receiver casing, 9- reception window, 10- photo resistance, 11- buzzer, 12- signal device mounting hole, 13- wiring are inserted
Hole.
Specific embodiment
The invention will be further described for specific embodiment with reference to the accompanying drawing.
Embodiment 1:
A kind of GIS device flange installation accurate positioning method, comprising the following steps:
A., the installation of GIS device flange is installed on the flange of GIS device and is accurately positioned alarming device, and connects the warning
Circuit, the alarming device include signal emission part and signal receiving part point, and signal emission part and signal receiving part point divide
On two flanges in docking；
B. carry out flanged joint, in turn, uniformly, screw to more rounds each flange bolt, flanged joint registration
When, signal emission part and signal receiving part point form signal path, and warning circuit issues the prompt of monitoring state qualification；
C. begin from generation pressure between flange bolt head and flange, it is ensured that the flange bolt of each round screws behaviour
The installation of GIS device flange is accurately positioned alarming device and all prompts installation process monitoring state qualification after work.
As shown in Figures 1 to 4, a kind of GIS device flange installation applied to the above method is accurately positioned alarming device, packet
The signal projector and signal receiver of three groups of pairings are included, signal projector and signal receiver are fixedly arranged on two of docking respectively
On flange 3 and position corresponds, and each signal receiver is connected in a warning circuit.The signal projector is optical transmitting set
1, including power supply 5, light emitting module 6 and lens 7 that launcher shell 4, button cell are constituted, power supply 5 is fixedly arranged on launcher shell 4
Interior rear end, lens 7 are fixedly arranged on 4 Inner Front End of launcher shell, and light emitting module 6 is fixedly arranged between power supply 5 and lens 7.The signal
Receiver is optical receiver 2, including receiver casing 8, reception window 9 and photo resistance 10, receives window 9 and is set to outside receiver
8 front end of shell, photo resistance 10 is in receiver casing 8 and coaxial with reception window 9, and photo resistance 10 is connected to the police
Show in circuit.8 rear end face of receiver casing is equipped with a pair of of patch jack 13, and 10 both ends of photo resistance pass through conducting wire and two respectively
Patch jack 13 connects.Launcher shell 4, receiver casing 8 end be equipped with miniature lever.It is uniformly distributed on the joint surface of flange 3
There is signal device mounting hole 12, signal device mounting hole 12 is funnel-shaped and is distributed in the interval of 3 bolt connecting hole of flange, light
The launcher shell 4 of transmitter 1 is in truncated cone-shaped and protrudes from 3 joint surface of flange, and optical receiver 2 is then hidden into the flange 3 of docking
On joint surface in corresponding signal device mounting hole 12, launcher shell 4 and signal device mounting hole 12 constitute taper fit.Institute
Buzzer 11 is connected in the warning circuit stated, buzzer 11 is connected in the warning circuit with each photo resistance 10.
Flange installation process state can be monitored by installing accurate positioning alarming method for power using this GIS device flange, make GIS device
Flange installation process is easier to rectify a deviation in time, so that it is guaranteed that the installation accuracy of GIS device flange.It is set using the GIS for being equipped with of the invention
When standby progress flange installation, first optical transmitting set 1 is aligned one by one with the signal device mounting hole 12 on the flange 3 of docking, gradually
Two flanges 3 for matching engagement are drawn close, then put on flange bolt, are uniformly tightened one by one, at the end of installation, such as buzzer
11 continuously send out buzz, show that each group optical transmitting set 1, optical receiver 2 align accurately, optical path zero deflection, and signal transmitting receives
Normally, the warning circuit has formed access., whereas if buzzer 11 does not issue buzz or buzz at the end of installation
Off and on, then show that each group optical transmitting set 1, optical receiver 2 align inaccuracy, optical path has deviation, and signal transmitting receives not just
Often, the not formed access of the warning circuit or not formed stable access.
Embodiment 2:
Signal projector and signal receiver are four groups.The receiver casing 8 of optical receiver 2 is in truncated cone-shaped and protrudes from method
On blue 3 joint surfaces, optical transmitting set 1 is then hidden on 3 joint surface of flange of docking in corresponding signal device mounting hole 12, receiver
Shell 8 and signal device mounting hole 12 constitute taper fit.Remaining is the same as embodiment 1.
Claims (5)
1. a kind of GIS device flange installation is accurately positioned alarming device, it is characterized in that including the signal transmitting of at least three groups pairings
Device and signal receiver, signal projector and signal receiver be fixedly arranged on two flanges (3) of docking respectively and position one by one
Corresponding, each signal receiver is connected in a warning circuit, and signal device mounting hole is evenly equipped on the joint surface of flange (3), is believed
Number transmitter or signal receiver are fixed in signal device mounting hole, and signal projector protrudes from the joint surface of flange (3),
Signal receiver is hidden into signal device mounting hole, signal projector and the tapered fit structure of signal device mounting hole；Or signal
Receiver protrudes from the joint surface of flange (3), and signal projector is hidden into signal device mounting hole, signal receiver and signalling means
The tapered fit structure of part mounting hole, the signal receiver are optical receiver (2), including receiver casing (8), reception window
(9) and photo resistance (10), receiver casing (8) rear end face are equipped with a pair of of patch jack (13), photo resistance (10) both ends
It is connect respectively by conducting wire with two patch jacks (13).
2. GIS device flange installation according to claim 1 is accurately positioned alarming device, it is characterized in that the signal emits
Device is optical transmitting set (1), including launcher shell (4), power supply (5), light emitting module (6) and lens (7), power supply (5) are fixedly arranged on
Launcher shell (4) interior rear end, lens (7) are fixedly arranged on launcher shell (4) Inner Front End, and light emitting module (6) is fixedly arranged on power supply (5)
Between lens (7).
3. GIS device flange installation according to claim 1 is accurately positioned alarming device, it is characterized in that receiving window (9)
Set on receiver casing (8) front end, photo resistance (10) be set in receiver casing (8) and with receive window (9) coaxially, it is photosensitive
Resistance (10) is connected in the warning circuit.
4. GIS device flange installation according to claim 1 is accurately positioned alarming device, it is characterized in that the warning electricity
Buzzer (11) are connected in road.
5. GIS device flange installation according to any one of claim 1 to 4 is accurately positioned alarming device, it is characterized in that
The end of signal projector and signal receiver is equipped with miniature lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710648923.1A CN107678069B (en) | 2017-08-01 | 2017-08-01 | A kind of GIS device flange installation accurate positioning method and its alarming device used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710648923.1A CN107678069B (en) | 2017-08-01 | 2017-08-01 | A kind of GIS device flange installation accurate positioning method and its alarming device used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107678069A CN107678069A (en) | 2018-02-09 |
| CN107678069B true CN107678069B (en) | 2019-09-03 |
Family
ID=61134421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710648923.1A Active CN107678069B (en) | 2017-08-01 | 2017-08-01 | A kind of GIS device flange installation accurate positioning method and its alarming device used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107678069B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490500B (en) * | 2018-05-23 | 2020-05-15 | 湘电风能有限公司 | Bolt anti-falling device |
| CN108631201B (en) * | 2018-06-06 | 2023-06-16 | 中国三冶集团有限公司 | GIS flange butt joint omnibearing leading-in device and method |
| CN110779772B (en) * | 2019-10-10 | 2022-07-15 | 江苏泰斯特专业检测有限公司 | Soil underground water layered monitoring well system and well building method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5590474A (en) * | 1995-08-08 | 1997-01-07 | Newport News Shipbuilding And Dry Dock Company | Flange bolt hole alignment pin |
| CN101581798A (en) * | 2009-06-19 | 2009-11-18 | 宁波恒博通讯设备有限公司 | Method for producing infrared signal of sending terminal of infrared ray corresponding emission device |
| US7703215B1 (en) * | 2006-10-18 | 2010-04-27 | Alfredo Rangel Sanchez | Flange alignment tool |
| CN201645140U (en) * | 2010-03-30 | 2010-11-24 | 山西丰喜化工设备有限公司 | Laser alignment concentric device for upper flange and lower flange of pressure vessel |
| CN202639817U (en) * | 2012-04-27 | 2013-01-02 | 中交四航局第二工程有限公司 | Centering device for mounting of offshore wind turbine |
| CN202639818U (en) * | 2012-04-27 | 2013-01-02 | 武汉理工大学 | Large flange hole accurate alignment system based on laser positioning |
| CN103576696A (en) * | 2013-09-03 | 2014-02-12 | 重庆文理学院 | Laser line cross alignment control method for charging arm of electric vehicle |
| CN105618973A (en) * | 2016-03-22 | 2016-06-01 | 江龙船艇科技股份有限公司 | Spirit level for ship flange mounting and ship flange mounting process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207133942U (en) * | 2017-08-01 | 2018-03-23 | 国网浙江省电力公司嘉兴供电公司 | A kind of GIS device flange installation is accurately positioned alarming device |
-
2017
- 2017-08-01 CN CN201710648923.1A patent/CN107678069B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5590474A (en) * | 1995-08-08 | 1997-01-07 | Newport News Shipbuilding And Dry Dock Company | Flange bolt hole alignment pin |
| US7703215B1 (en) * | 2006-10-18 | 2010-04-27 | Alfredo Rangel Sanchez | Flange alignment tool |
| CN101581798A (en) * | 2009-06-19 | 2009-11-18 | 宁波恒博通讯设备有限公司 | Method for producing infrared signal of sending terminal of infrared ray corresponding emission device |
| CN201645140U (en) * | 2010-03-30 | 2010-11-24 | 山西丰喜化工设备有限公司 | Laser alignment concentric device for upper flange and lower flange of pressure vessel |
| CN202639817U (en) * | 2012-04-27 | 2013-01-02 | 中交四航局第二工程有限公司 | Centering device for mounting of offshore wind turbine |
| CN202639818U (en) * | 2012-04-27 | 2013-01-02 | 武汉理工大学 | Large flange hole accurate alignment system based on laser positioning |
| CN103576696A (en) * | 2013-09-03 | 2014-02-12 | 重庆文理学院 | Laser line cross alignment control method for charging arm of electric vehicle |
| CN105618973A (en) * | 2016-03-22 | 2016-06-01 | 江龙船艇科技股份有限公司 | Spirit level for ship flange mounting and ship flange mounting process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107678069A (en) | 2018-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107678069B (en) | A kind of GIS device flange installation accurate positioning method and its alarming device used | |
| US20100251857A1 (en) | Insulation stripping device comprising a contact sensor and adjustment means for an insulation stripping device | |
| US20190162788A1 (en) | Method and apparatus for monitoring status of relay | |
| AU2018222917A1 (en) | Alarm signal output apparatus, detection alarm device, and detection alarm platform system | |
| CN110011729B (en) | Interference detection method and device, storage medium and electronic device | |
| CN206195721U (en) | Photovoltaic connector testing arrangement | |
| CN207133942U (en) | A kind of GIS device flange installation is accurately positioned alarming device | |
| CN109263503A (en) | Charging pile with vehicle vehicle interconnecting function | |
| CN110824400B (en) | Remote monitoring system and method for lightning arrester discharge counter | |
| CN209650068U (en) | Charging pile with vehicle vehicle interconnecting function | |
| EP4382348A1 (en) | Electric vehicle charging socket and vehicle | |
| CN214375203U (en) | Wire test equipment and test device | |
| CN113589190B (en) | Detection alarm device of unmanned aerial vehicle group battery | |
| CN110988458B (en) | Energy consumption and energy efficiency analysis management platform based on Internet of things | |
| CN102803976A (en) | Power lead testing system and electronic tag | |
| CN211655569U (en) | Handheld intelligent electric line parameter inspection device and system | |
| CN209342041U (en) | Through-hole station detection device | |
| EP3490054A1 (en) | Alarm signal output apparatus, detection alarm device, and detection alarm platform system | |
| CN105758525B (en) | Hand-hold wireless infra red flame simulator and its control method | |
| CN213123240U (en) | Plant protection unmanned aerial vehicle fence test equipment | |
| CN217181153U (en) | Air switch's test equipment | |
| CN220934840U (en) | Insulating plug with fire extinguishing and temperature measuring functions | |
| CN214703886U (en) | Switch adjustment calibration tool | |
| CN217543949U (en) | Infrared optical fiber temperature-sensing fire detector of lithium ion battery box | |
| CN210323296U (en) | Storage battery inspection device |
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 |