CN217716909U - Bolt derotation monitoring device - Google Patents
Bolt derotation monitoring device Download PDFInfo
- Publication number
- CN217716909U CN217716909U CN202221805998.9U CN202221805998U CN217716909U CN 217716909 U CN217716909 U CN 217716909U CN 202221805998 U CN202221805998 U CN 202221805998U CN 217716909 U CN217716909 U CN 217716909U
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- angle
- magnetic core
- derotation
- 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
- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 6
- 239000000969 carrier Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 5
- 239000013598 vector Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 210000003811 finger Anatomy 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
Classifications
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a bolt derotation monitoring devices, include: a housing assembly at least partially coupled to the nut; the detection assembly is at least partially connected with the shell assembly and is also at least partially connected with the bolt; the sensor is qualified for next round of competitions, and sensor outgoing line is at least partly connected with the determine module. The detection assembly comprises a magnetic core and an electronic bin, the magnetic core and the electronic bin convert the relative state between the bolt and the nut into an electric signal, and the sensor outlet transmits detection data of the detection assembly to the server. Through the arrangement, the relative rotation angle of the bolt and the nut can be obtained according to the electric signals output by the magnetic core and the electronic bin, and real-time change of loosening of the bolt and the nut can be obtained according to data transmitted to the server.
Description
Technical Field
The utility model relates to a bolt pretightning force detects technical field, especially relates to a bolt derotation monitoring devices field.
Background
In recent years, the wind energy industry in China is rapidly developed, and the accumulated installed capacity of a wind driven generator is continuously broken through. However, megawatt wind generating sets are mostly arranged in mountainous areas, plains or on the sea, the working conditions are very bad, the workload of regular inspection and operation and maintenance is huge, the fault of a fan cannot be found in time, and the economic benefit of a wind power enterprise is seriously influenced. Especially, the wind generating set bolt appears damaging or cracked condition, has very big potential safety hazard, and the blade drops if light, and the fan falls down the tower if heavy, and the economic loss who causes is huge. Therefore, the method has the advantages that the bolts of the large-scale wind turbine generator are monitored in real time, the predictive maintenance is carried out, and the method has important significance for reducing the operation and maintenance cost of enterprises, enhancing the economic benefit and improving the safety.
When the bolt of the wind turbine generator is loosened, whether the bolt is loosened or not and the current pretightening force condition of the bolt are difficult to judge manually, and the bolt can only be tightened indiscriminately. At present, the traditional wind turbine generator set bolt pretightening force control method mainly depends on a torque method. However, the bolt is fastened by using a torque method under the influence of factors such as friction coefficient and the like which are difficult to control on site, the method has large error which can reach forty percent, the bolt pretightening force cannot be accurately controlled, and the bolt loosening condition cannot be monitored in real time.
The invention with patent publication No. CN109900466A discloses a bolt or nut looseness detection method and system. The patent defines a spin-independent vector irrelevant to the screwing-out angle of the bolt and/or the nut and a spin-related vector relevant to the screwing-out angle of the bolt and/or the nut, calculates the total screwing-out angle of the bolt and/or the nut in a detection time period by calculating an included angle between the spin-independent vector and the spin-related vector, and obtains a loosening detection result of the bolt and/or the nut according to the total screwing-out angle. However, the patent uses motion parameters such as linear acceleration, gravitational acceleration or geomagnetic parameters to obtain spin-independent vectors, and the measurement difficulty of the motion parameters is high and the measurement accuracy is difficult to guarantee. The measuring element is attached to the surface of the bolt and/or the nut and is easily damaged and failed by the influence of environmental factors.
Disclosure of Invention
In order to solve the defects of the prior art, the utility model provides a bolt derotation monitoring devices based on angular surveying.
In order to achieve the above object, the utility model adopts the following technical scheme:
a bolt derotation monitoring device comprising: a housing assembly at least partially connected to the nut; the detection assembly is at least partially connected with the shell assembly and is also at least partially connected with the bolt; the detection assembly comprises a magnetic core and an electronic bin, and the magnetic core and the electronic bin are used for detecting the relative state of the bolt and the nut; the bolt at least comprises a first state and a second state relative to the nut, when the bolt and the nut are screwed, the bolt and the nut are in the first state, and the relative rotation angle of the bolt and the nut is a first angle; when the nut and the bolt rotate relatively, the bolt and the nut are in a second state, and the rotation angle of the bolt and the nut is a second angle; if the difference between the second angle and the first angle is larger than or equal to 3 degrees, the bolt and the nut are in a loosening state.
Further, the magnetic core is arranged on the bolt, and the electronic cabin is arranged on the shell assembly.
Further, the magnetic core is connected with the bolt in an adhesive mode or in a magnetic attraction mode, and the electronic bin is connected with the shell component in an adhesive mode.
Further, the magnetic core is arranged on the shell assembly, and the electronic bin is arranged on the bolt.
Further, the magnetic core and the shell component are connected in an adhesion mode or in a magnetic attraction mode, and the electronic bin is connected with the bolt in an adhesion mode.
Further, if the difference between the second angle and the first angle is larger than or equal to 3 degrees and smaller than 10 degrees, the bolt and the nut are in a loosening early warning state.
Further, if the difference between the second angle and the first angle is larger than or equal to 10 degrees, the bolt and the nut are in a loosening alarm state.
Further, the housing assembly is at least partially sleeved over an outside edge of the nut.
Further, the shape of the cross-section of the housing assembly and the shape of the cross-section of the nut are substantially the same.
Further, the bolt derotation monitoring device further comprises a sensor outgoing line, and at least part of the sensor outgoing line is fixedly connected with the electronic bin.
The utility model provides a bolt derotation monitoring devices arouses the change of electric potential difference in the electronic storehouse through the relative motion of bolt and nut, converts the relative state of bolt and nut to the signal of telecommunication, can obtain the relative turned angle of bolt and nut according to the signal of telecommunication.
Drawings
Fig. 1 is the structure schematic diagram of the bolt derotation monitoring device of the utility model.
Fig. 2 isbase:Sub>A schematic sectional view along the directionbase:Sub>A-base:Sub>A of fig. 1 according to the present invention.
Fig. 3 is the schematic diagram of the bolt and nut looseness detection of the present invention.
Fig. 4 is a flow chart of the current carrier distribution rule in the electronic cabin of the present invention.
Fig. 5 is a flow chart of the working process of the novel bolt anti-rotation monitoring device.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
As shown in fig. 1 to 3, a bolt anti-rotation monitoring device 100 includes a housing assembly 11, a detection assembly 12, and a sensor outlet 13. The shell assembly 11 is at least partially connected with the nut, and the shell assembly 11 is used for supporting the detection assembly 12 and the sensor outlet 13, protecting the detection assembly 12 from being damaged by environmental factors, and prolonging the service life of the detection assembly 12. The detecting component 12 is at least partially connected with the housing component 11, the detecting component 12 is also at least partially connected with the bolt, and the detecting component 12 is used for detecting the relative state between the nut and the bolt. The sensor outlet 13 is at least partially connected to the detection assembly 12, and the sensor outlet 13 is used for supplying power to the detection assembly 12 and for transmitting measurement data of the detection assembly 12 to the server. Through the setting mode, the detection assembly 12 can monitor the relative state of the bolt and the nut in real time, meanwhile, a worker can check real-time measurement data transmitted to the server on line, and can obtain real-time changes of bolt looseness according to the measurement data in the server, so that the looseness condition of the bolt is evaluated completely and comprehensively, and the evaluation result can guide the worker to perform predictive maintenance.
Specifically, the housing assembly 11 is at least partially sleeved on the outer edge of the nut, the cross section of the housing assembly 11 has a shape substantially the same as that of the outer edge of the nut, and when the nut rotates relative to the bolt by a certain angle, the housing assembly 11 can rotate relative to the bolt by a corresponding angle along with the nut. The detection component 12 is at least partially fixedly connected with the shell component 11, the detection component 12 is also at least partially fixedly connected with the bolt, the detection component 12 can convert the relative rotation condition between the bolt and the nut into an electric signal, and the relative rotation angle of the bolt and the nut is obtained according to the electric signal, so that the relative rotation condition of the bolt and the nut is detected. The bolt relative to the nut at least comprises a first state and a second state, when the bolt and the nut are screwed tightly, the bolt and the nut are in the first state, and the relative rotation angle of the bolt and the nut is a first angle; when the nut and the bolt rotate relatively, the bolt and the nut are in a second state, and the relative rotation angle of the bolt and the nut is a second angle. If the difference between the second angle and the first angle is larger than or equal to 3 degrees, the bolt and the nut are in a loose state; if the bolt and the nut are in a loose state, the worker needs to restore the bolt and the nut to the first state. Further, if the difference between the second angle and the first angle is greater than or equal to 3 degrees and smaller than 10 degrees, the bolt and the nut are in a loosening early warning state, and if the bolt and the nut are in the loosening early warning state, a worker needs to restore the bolt and the nut to the first state as soon as possible; if the difference between the second angle and the first angle is larger than or equal to 10 degrees, the bolt and the nut are in a loosening alarm state, and if the bolt and the nut are in the loosening alarm state, the worker needs to immediately restore the bolt and the nut to the first state. At least part of the sensor outgoing line 13 is fixedly connected with the detection component 12, the sensor outgoing line 13 is used for providing power for the detection component 12, so that current P continuously passes through the detection component 12, and the sensor outgoing line 13 is also used for transmitting the measurement data of the detection component 12 to a server. Through the above setting mode, the relative state of detection component 12 can real-time supervision bolt and nut, and simultaneously, the staff can look over the real-time measurement data who transmits to the server on line, and according to the measured data in the server, the staff can obtain the not hard up real-time change of bolt to carry out complete, comprehensive aassessment to the not hard up condition of bolt, the evaluation result can guide the staff to carry out predictive maintenance.
In one implementation, sensing assembly 12 includes a magnetic core 121 and an electronics pocket 122. A magnetic core 121 is provided on the bolt, the magnetic core 121 being used to generate a magnetic field B. The electronic bin 122 is arranged on the housing assembly 11, at least part of the electronic bin 122 is connected with the sensor outlet 13, and the electronic bin 122 is used for converting the relative rotation of the bolt and the nut into an electric signal, obtaining the relative rotation angle of the bolt and the nut according to the electric signal, and transmitting the measurement data to the server through the sensor outlet 13.
Specifically, the magnetic core 121 is at least partially fixedly connected to the bolt, wherein the magnetic core 121 is connected to the bolt by adhesion or magnetic attraction, and the magnetic core 121 may be configured as a permanent magnet. The electronic chamber 122 is at least partially fixedly connected with the housing assembly 11, wherein the electronic chamber 122 is adhesively connected with the housing assembly 11, and at least a portion of the electronic chamber 122 is also fixedly connected with the sensor outlet 13. The sensor outlet 13 provides a power supply for the electronic chamber 122, so that a current P continuously flows through the electronic chamber 122. Magnetic field B is distributed around the magnetic core 121, and acts on the current carriers inside the electronic bin 122, and the current carriers are regularly distributed and generate potential difference inside the electronic bin 122. When the magnetic core 121 and the electron bin 122 rotate relatively, the acting force of the magnetic field B on the carriers changes, the distribution of the carriers inside the electron bin 122 changes accordingly, so that the potential difference inside the electron bin 122 changes, and the rotation angle of the magnetic core 121 relative to the electron bin 122 can be obtained according to the change of the potential difference. Wherein, the rotation angle of the magnetic core 121 relative to the electronic cabin 122 can be obtained by a calibration method.
In this implementation, the magnetic core 121 and the electronic bin 122 measure the rotation angle of the nut by using the hall effect, and for clearly explaining the technical solution of the present application, a front side, a rear side, a left side, a right side, an upper side, and a lower side are also defined as shown in fig. 3. Specifically, the magnetic core 121 is fixedly disposed on the bolt, and a magnetic field B is distributed around the magnetic core 121 and extends in the front-rear direction. The sensor outlet 13 is fixedly connected with at least part of the electronic bin 122, the sensor outlet 13 provides power for the electronic bin 122, so that current P passes through the electronic bin 122 and extends along the left and right directions. The direction of the magnetic field B is perpendicular to the direction of the current P, and the carriers in the electron chamber 122 are subjected to a lorentz force F perpendicular to the direction of the magnetic field B and the direction of the current P. The direction of the lorentz force F can be determined by the left-hand rule, specifically, the left palm is opened, the magnetic induction line passes through the palm center, the four fingers point to the positive charge movement direction, and the direction pointed by the thumb perpendicular to the four fingers is the direction of the lorentz force F, namely the lorentz force F extends along the up-down direction. Due to the action of the lorentz force F, the carriers in the electron chamber 122 drift, and positive charges and negative charges gradually gather toward the upper and lower planes perpendicular to the lorentz force F, thereby generating a potential difference on the upper and lower surfaces perpendicular to the lorentz force F. Due to the potential difference, the carriers form an electric force F between the upper and lower surfaces perpendicular to the lorentz force F. When the two forces of the electric field force F and the lorentz force F are balanced, namely, the electric field force F which is equal to the lorentz force F and opposite to the lorentz force F is formed between the upper surface and the lower surface which are vertical to the lorentz force F, the distribution of the carriers reaches a stable state, and the potential difference between the upper surface and the lower surface which are vertical to the lorentz force F also reaches the stable state. When the bolt becomes loose, the nut rotates a certain angle relative to the bolt, and the rotation of the nut relative to the bolt causes a corresponding angular relative rotation of the electronic compartment 122 and the magnetic core 121. The direction of the current P in the magnetic field B changes, so that the Lorentz force F borne by the carriers in the electronic bin 122 changes, the carriers in the electronic bin 122 are redistributed, a new electric field force F and the Lorentz force F are generated to achieve balance of the two forces, a new potential difference is generated, and the rotation angle of the nut can be obtained according to the change of the potential difference in the electronic bin 122.
As one implementation, the housing assembly 11 is provided with a mounting portion 111 and a fixing portion 112. The fixing portion 112 is at least partially connected to the nut, the fixing portion 112 is also at least partially connected to the mounting portion 111, and the fixing portion 112 is for transmitting the movement of the nut to the mounting portion 111 and for supporting the mounting portion 111. The mounting portion 111 is at least partially connected to the electronic chamber 122, and the mounting portion 111 is used for transmitting the movement of the fixing portion 112 to the electronic chamber 122 and supporting the electronic chamber 122.
Specifically, the fixing portion 112 is sleeved on the outer edge of the nut, and the fixing portion 112 and the mounting portion 111 are fixedly connected or integrally formed. The mounting portion 111 is at least partially fixedly connected to the electronic chamber 122. The cross-sectional shape of the fixing portion 112 is substantially the same as the shape of the outer edge of the nut. When the nut rotates a certain angle relative to the bolt, the nut can drive the fixing portion 112 to rotate a corresponding angle relative to the bolt. Because the electronic cabin 122 is at least partially fixedly connected with the mounting portion 111, the mounting portion 111 and the fixing portion 112 are fixedly connected or integrally formed, when the fixing portion 112 rotates, the fixing portion 112 can drive the mounting portion 111 to rotate simultaneously, and further drive the electronic cabin 122 to rotate simultaneously. That is, when the nut is rotated at a certain angle relative to the bolt, the electronic magazine 122 is rotated at a corresponding angle relative to the bolt. And because the magnetic core 121 is at least partially fixedly connected with the bolt, the electronic bin 122 rotates relative to the bolt by a corresponding angle at the same time as the electronic bin 122 rotates relative to the magnetic core 121. That is, when the nut is rotated by a certain angle with respect to the bolt, the electronic compartment 122 is also rotated by a corresponding angle with respect to the magnetic core 121. When the electronic bin 122 rotates relative to the magnetic core 121, the rotation angle of the electronic bin 122 relative to the magnetic core 121 can be obtained according to the change of the potential difference in the electronic bin 122, and the rotation angle is basically the same as the rotation angle of the nut relative to the bolt, so that the relative rotation condition of the nut and the bolt is obtained.
It should be noted that the electronic cabin 122 and the magnetic core 121 may be installed in different positions, that is, the magnetic core 121 is at least partially disposed on the housing assembly 11, the electronic cabin 122 is at least partially disposed on the bolt, the electronic cabin 122 is adhesively connected to the bolt, and the magnetic core 121 is adhesively connected to the housing assembly 11 or magnetically connected. The protective casing 1 can be directly sleeved on the outer edge of the nut, and can also be in a threaded connection, a buckle connection or a magnetic attraction connection mode. In addition, the electronic cabin 122 and the magnetic core 121 may be cylindrical or rectangular; the electronic cabin 122 may be disposed on the mounting portion 111, or may be disposed on the fixing portion 112; as long as bolt and nut take place when relative rotation, magnetic field B that magnetic core 121 produced is enough to influence the distribution condition of the inside carrier of electron storehouse 122, makes the inside carrier redistribution of electron storehouse 122 and produces the technical scheme of new potential difference, all is in the protection scope of the utility model.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A bolt derotation monitoring device, comprising:
a housing assembly at least partially coupled to the nut;
a detection assembly at least partially connected with the housing assembly, the detection assembly further at least partially connected with a bolt;
the detection assembly comprises a magnetic core and an electronic bin, and the magnetic core and the electronic bin are used for detecting the relative state of the bolt and the nut;
the bolt at least comprises a first state and a second state relative to the nut, when the bolt and the nut are screwed, the bolt and the nut are in the first state, and the relative rotation angle of the bolt and the nut is a first angle; when the nut and the bolt rotate relatively, the bolt and the nut are in the second state, and the relative rotation angle of the bolt and the nut is a second angle; and if the difference value between the second angle and the first angle is more than or equal to 3 degrees, the bolt and the nut are in a loose state.
2. The bolt whirl monitoring device of claim 1, wherein said magnetic core is disposed on said bolt and said electronics compartment is disposed on said housing assembly.
3. The bolt derotation monitoring device of claim 2 wherein the magnetic core is adhesively attached to the bolt or magnetically attached to the electronic cartridge and the housing assembly.
4. The bolt derotation monitoring device of claim 1 wherein said magnetic core is disposed on said housing assembly and said electronics bay is disposed on said bolt.
5. A bolt derotation monitoring device according to claim 4 wherein said magnetic core and said housing assembly are adhesively or magnetically attached and said electronics compartment and said bolt are adhesively attached.
6. The bolt derotation monitoring device of claim 1 wherein the bolt and the nut are in a loosening warning state if the difference between the second angle and the first angle is greater than or equal to 3 ° and less than 10 °.
7. The bolt derotation monitoring device of claim 1 wherein the bolt and the nut are in a loosening warning state if the difference between the second angle and the first angle is greater than or equal to 10 °.
8. The bolt derotation monitoring device of claim 1 wherein the housing assembly is at least partially sleeved on the outside edge of the nut.
9. The bolt whirl monitoring apparatus of claim 1, wherein a cross-sectional shape of said housing assembly and a cross-sectional shape of said nut are substantially the same.
10. The bolt derotation monitoring device of claim 1 further comprising a sensor outlet wire, at least a portion of said sensor outlet wire being fixedly connected to said electronics compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221805998.9U CN217716909U (en) | 2022-07-13 | 2022-07-13 | Bolt derotation monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221805998.9U CN217716909U (en) | 2022-07-13 | 2022-07-13 | Bolt derotation monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217716909U true CN217716909U (en) | 2022-11-01 |
Family
ID=83779157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221805998.9U Active CN217716909U (en) | 2022-07-13 | 2022-07-13 | Bolt derotation monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217716909U (en) |
-
2022
- 2022-07-13 CN CN202221805998.9U patent/CN217716909U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10401169B2 (en) | Enhanced power transmission tower condition monitoring system for overhead power systems | |
| CN110345019B (en) | Method and system for detecting health state of blade fastening bolt of wind driven generator | |
| US8511177B1 (en) | Blade condition monitoring system | |
| US20110285129A1 (en) | wind turbine and a method for monitoring a wind turbine | |
| CN102288281B (en) | On-line monitoring device and method for breeze vibration of high-tension line based on vibration generation | |
| EP2225810A1 (en) | Method for detection of charge originating from lightning | |
| US11448195B2 (en) | Sensor arrangement for a wind turbine | |
| CN111521316B (en) | Multi-gear vibrating wire type bolt state monitoring device and use and identification method thereof | |
| CN110320021A (en) | Contact net anchor section on-Line Monitor Device | |
| CN217716909U (en) | Bolt derotation monitoring device | |
| CN113482862B (en) | Wind turbine generator running state monitoring method and system | |
| CN110106800A (en) | High speed railway sound barrier health indicator administrative evaluation system and monitoring device | |
| CN112821558A (en) | Power transmission line deformation monitoring device, system and method based on IMU combined inertial navigation | |
| CN209340188U (en) | A kind of centrifugal fan sensory perceptual system | |
| CN215726687U (en) | Gas pipeline settlement and vibration speed monitoring device | |
| CN206919933U (en) | A kind of insulator chain pulling force and obliquity sensor integral structure part | |
| Yu et al. | Development of a detection system for the catenary vibration monitoring | |
| CN110160448A (en) | A kind of transmission line of electricity analog conducting wire icing on-line monitoring system | |
| CN109255932A (en) | A kind of inclination alarming device based on pressure | |
| CN113155017B (en) | Mountain area pipeline strain on-line monitoring system | |
| CN114577327A (en) | Bridge vibration monitoring devices based on electromagnetic conversion | |
| CN114166397A (en) | Cable integrated tension monitoring device and monitoring method | |
| KR101938817B1 (en) | Dock installed displacement measuring apparatus with independent power generation, realtime dock stability evaluation systen using the same and evaluation method thereof | |
| CN208818844U (en) | Bolt fracture monitoring device | |
| CN217179596U (en) | System capable of monitoring deformation of framework support and foundation of traction power transformation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231012 Address after: No. 702, Floor 7, Block C, Yile Office Building, No. 9, Cangshan Road, Xiaguan Town, Dali City, Dali Bai Autonomous Prefecture, 650000 Yunnan Province Patentee after: Guodian power Yunnan New Energy Development Co.,Ltd. Patentee after: ZHEJIANG CHTRICSAFEWAY NEW ENERGY TECHNOLOGY CO.,LTD. Patentee after: Yunnan Guodian Power Fumin Wind Power Development Co.,Ltd. Address before: No. 702, Floor 7, Block C, Yile Office Building, No. 9, Cangshan Road, Xiaguan Town, Dali City, Dali Bai Autonomous Prefecture, 650000 Yunnan Province Patentee before: Guodian power Yunnan New Energy Development Co.,Ltd. Patentee before: ZHEJIANG CHTRICSAFEWAY NEW ENERGY TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |