CN209783784U - Fiber grating tension sensor with over-range protection - Google Patents
Fiber grating tension sensor with over-range protection Download PDFInfo
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- CN209783784U CN209783784U CN201920575025.2U CN201920575025U CN209783784U CN 209783784 U CN209783784 U CN 209783784U CN 201920575025 U CN201920575025 U CN 201920575025U CN 209783784 U CN209783784 U CN 209783784U
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Abstract
The utility model discloses an optical fiber grating tension sensor with over-range protection, which comprises a sensor main body, a ball seat hanging ring and a sensor shell, wherein the hanging ring is arranged at the top of the sensor main body, the cavity inside the sensor main body and the ball seat hanging ring form a detection mechanism, and the detection mechanism downwards penetrates out of the bottom of the sensor main body; the detection mechanism comprises a connecting optical fiber, an optical fiber grating, a deformation force rod, a transmission optical fiber and a ball seat, wherein the lower end of the deformation force rod is provided with a ball body, the upper end of a ball seat suspension ring is provided with the ball seat, and the ball body is fastened in the ball seat; a stress pull ring is arranged at the lower end of the ball seat hanging ring; the fiber bragg gratings are symmetrically arranged on two sides of the deformation force rod, the upper ends of the two fiber bragg gratings are connected through connecting optical fibers, and the lower ends of the two fiber bragg gratings are respectively connected with transmission optical fibers. The utility model provides a measurement accuracy that current sensor exists low, tensile ability is weak, does not have safety protection's problem, has improved measurement accuracy than traditional force sensor, has enlarged range of application and fail safe nature.
Description
Technical Field
The utility model discloses a fiber grating force sensor, it is specific to relate to a fiber grating force sensor of overrange protection, mainly be used for transmission line wire icing monitoring.
Background
Generally, in south China, mountainous areas are mostly in the south China, and the climate is humid, so that a power transmission line is subjected to environmental loads, such as wind, rain, snow loads and the like, and particularly in winter, one side of a power transmission lead is covered with 6mm to 30mm of ice. The normal operation of the power system can be seriously influenced by the faults caused by the ice coating of the power transmission line, and the safety of the power system is seriously damaged. In 2008, in 1 month to 2 months, the northern Guangdong area of China suffers from a serious attack of low-temperature, rain, snow and ice weather. Accidents such as ice-flash tripping, pole tower collapse, conductor galloping, equipment damage and the like also occur in the power grid in a large-scale area. The massive damage of power transmission equipment indicates that the resistance of the power line tower in south China to long-time low-temperature, rain, snow and ice climate with a large range is seriously insufficient. Structural instability of the iron tower under the action of excessive ice-coating load is an important reason for a tower collapse accident in snow disaster in 08 years. Therefore, the on-line monitoring of the ice coating of the power transmission line is an effective method for ensuring the safe and reliable operation of power transmission equipment and reducing the loss caused by disasters. The existing optical fiber tension sensor capable of monitoring ice coating of the power transmission line generally has two defects: on one hand, the method meets the measurement range but does not meet the hardware bearing requirement specified by the national standard; on the other hand, the bearing requirement of the hardware fitting is met, but the design measurement range is too large, and most of the hardware fitting is not used actually, so that the sensor cannot achieve the measurement precision.
Therefore, an over-range protection fiber grating tension sensor which can meet the load bearing requirement of a power grid fitting, can accurately monitor the tension of a transmission conductor, has stable performance and reliable operation is necessary and is a key for solving the technical problems.
Disclosure of Invention
To a great deal of defect and not enough that exist among the above-mentioned background art, the utility model discloses improve and the innovation to this, aim at providing a modern design, simple structure can prevent effectively that transmission line icing is too heavy and arouse the wire to drop, also can eliminate the measuring error who is aroused by the temperature when avoiding great incident, the better temperature drift that has reduced fiber grating force sensor has also been overcome by the sensor that temperature variation arouses, measurement accuracy has been improved, measurement performance's stability and reliability.
In order to solve the above problems and achieve the above object, the present invention provides an optical fiber grating tension sensor with over-range protection, which is implemented by adopting the following design structure and the following technical solution:
Another object of the present invention is to enable remote real-time monitoring in harsh environments while providing significant improvements in measurement stability, sensitivity and accuracy.
As an improvement of the fiber grating tension sensor with the over-range protection function, the fiber grating tension sensor comprises a sensor main body (3), a ball seat hanging ring and a sensor shell (8), the hanging ring (1) is arranged at the top of the sensor main body (3), the inner part of the cavity of the sensor main body (3) and the ball seat hanging ring form a detection mechanism, and the detection mechanism downwards penetrates out of the bottom of the sensor main body (3); the detection mechanism comprises a connecting optical fiber (2), an optical fiber grating (4), a deformation force rod (5), a transmission optical fiber (10) and a ball seat (7), wherein the lower end of the deformation force rod (5) is provided with a ball body (12), the upper end of a ball seat hanging ring is provided with the ball seat (7) matched with the ball body (12), and the ball body (12) is fastened in the ball seat (7); a stressed pull ring (11) is arranged at the lower end of the ball seat hanging ring; the fiber gratings (4) are symmetrically arranged on two sides of the deformation force rod (5), the upper ends of the two fiber gratings (4) are connected through the connecting optical fiber (2), and the lower ends of the two fiber gratings (4) are respectively connected with the transmission optical fiber (10).
As the improvement of the utility model, the number of the hanging rings (1) is two, and the vertical line direction of the two hanging rings (1) is connected with the insulator; one of the fiber gratings arranged on the deformation force rod (5) is a double-sensitive grating (4a), and the double-sensitive grating (4a) is sensitive to temperature and tension; the other fiber grating is a single sensitive grating (4b), and the single sensitive grating (4b) is sensitive to temperature.
as the above further improvement of the present invention, the double sensitive grating (4a) and the single sensitive grating (4b) are all welded together by the coiled connecting fiber (2) in series and are led out by the transmission fiber (10).
as the utility model discloses foretell further improvement, sensor main part (3) are bottom open-ended frame type main part (9), and frame type main part (9) and ball seat (7) are arranged each other and are constituteed the overrange protection architecture, receive the ascending power of vertical side.
as the utility model discloses foretell further improvement again, deformation power pole (5) are formed by having elastic material preparation, and the stiff end of this deformation power pole (5) sets up to a whole with sensor main part (3).
As the above further improvement of the utility model, a moving part (6) is arranged between the ball body (12) and the ball seat (7), and the moving part (6) is a W-shaped spring piece or a spring.
As a still further improvement of the above structure of the present invention, the ball seat is in a C-shaped structure; the sensor housing (8) is a cylindrical member as a whole.
As the above mentioned further improvement of the utility model, the whole stressed pull ring (11) is a circular structure; the ball body (12) is arranged in the ball seat (7), and the ball body (12) is clamped and fixed through the moving part (6) to prevent falling off.
as the utility model discloses foretell still further improvement more again, all from interior to outer according to the preface spraying have injection moulding layer and antirust coat and warning layer on the surface of link (1) and sensor housing (8) and atress pull ring (11), scribble phosphor powder on the warning layer.
as a still further improvement of the utility model, a high molecular wear-resistant material is injected on the injection layer; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the warning layer is a yellow or black reflective warning tape or a reflective color film or reflective paint.
The working principle is as follows: the fiber grating tension sensor with the design structure and the over-range protection needs to be manufactured and installed for standby before being used.
during specific manufacturing, the fiber bragg grating tension sensor comprises a sensor main body (3), a ball seat hanging ring and a sensor shell (8). The hanging ring (1), the frame-shaped structure (9), the deformation force rod (5) and the sphere (12) on the sensor main body (3) are integrated. The sensor main body (3) is formed by processing cylindrical steel, wherein the two hanging rings (1) are formed by linear cutting and milling machine processing; the deformation force rod (5) and the sphere (12) are machined through a lathe; the frame structure (9) is machined by means of a milling machine. The ball seat hanging ring comprises a ball seat (7) and a stressed pull ring (11), the ball seat hanging ring is processed into a whole by a casting process, and the size of the ball seat (7) is matched with that of a ball body (12). The sensor shell (8) is formed by processing stainless steel pipes, and the inner diameter of the sensor shell is matched with the outer diameter of the sensor main body (3).
this kind of sensor that accomplishes according to above-mentioned processing preparation needs install it as reserve before using, during the installation, at first, sensor main part (3) are vertical to be placed, through frame type main part (9) breach position, in hanging into ball seat (7) with spheroid (12), a ball seat nature whereabouts segment under the action of gravity, leaves the moving part mounting hole, packs the moving part into the mounting hole, and chucking spheroid structure prevents that spheroid and ball seat from droing. A gap is left between the sphere (12) and the frame-shaped main body (9).
Then, the two sides of the deformation force rod (5) are pasted with the gratings to monitor the stress condition of the deformation force rod, the two gratings are coiled and welded together through the connecting optical fiber (2), one of the two gratings is a double-sensitive grating (4a), the two ends of the double-sensitive grating are pasted on the deformation force rod (5) through epoxy glue, and the double-sensitive grating and the deformation force rod (5) are stressed and deformed together; and the other fiber grating is a single sensitive grating (4b), one end of the single sensitive grating is fixed by epoxy glue, the double sensitive grating (4a) is sensitive to temperature and tension, the single sensitive grating (4b) is sensitive to temperature, the two gratings are respectively led out to the outer side of the sensor through a transmission fiber (10), and after the installation step is completed, a sensor shell (8) is sleeved outside the sensor main body to protect a detection mechanism in the sensor, so that the installation work of the whole sensor is completed, and the whole sensor is ready for use.
When the sensor is used, the weight of the insulator string of the transmission tower line is directly measured, the upper end of the sensor is connected with the cross arm of the transmission tower, and the lower end of the sensor is connected with the hanging ring of the insulator string.
When the sensor hanging ring is used, the sensor hanging ring (1) is hung on a cross arm of a power transmission tower through a plate (13) and a nut (14), and the stressed pull ring (11) is connected with an insulator string through an insulator hanging ring (15) and the nut. The fiber bragg grating tension sensor is designed with two running states.
the first one is under normal operating conditions, and the bearing part comprises deformation power pole (5), spheroid (12) and ball seat (7) structure inside the sensor, and deformation power pole (5) can bear the wire dead weight and generally cover ice thickness, and deformation power pole (5) both sides grating monitors its gravity condition.
in normal operation, the double sensitive grating (4a) and the single sensitive grating (4b) are under the same temperature condition, and the wavelength variation of the double sensitive grating (4a) is delta lambda1The wavelength variation of the single sensitive grating (4b) is delta lambda2the compensation coefficient of the double sensitive grating to the temperature is k1The compensation coefficient of the single sensitive grating to the temperature is k2Compensation coefficient K of sensor to temperatureT＝k2/k1。
then, the tension value measured by the fiber bragg grating tension sensor for monitoring the icing of the transmission line conductor is as follows:
F＝(Δλ1-Δλ2*KT)/K
Wherein K is the sensitivity coefficient of the sensor and the unit is nm/KN.
The second is when the abnormal conditions appears, sensor deformation force pole (5) are by the tensile deformation or when splitting, ball seat (7) can contact frame type main part (9), and the bearing part comprises frame type main part (9) and ball seat (7) structure, can effectively avoid transmission line icing overweight and arouse the sensor fracture, and lead to the wire to drop, avoids great incident, can realize through two bearing structure that the tensile accurate measurement of wire with provide the over-range protection.
Compared with the prior art, the utility model following beneficial effect has:
1. The utility model has simple installation mode and higher precision than the traditional tension sensor, and the sensor shell is connected outside the deformation force rod, so that the sensor is not easily interfered by strong electromagnetic environment around the transmission line, is corrosion-resistant and high temperature-resistant and can adapt to severe environment;
2. The utility model discloses a sensing grating contains two sensitive gratings and single sensitive grating, and two sensitive gratings are all sensitive to temperature and pulling force, and single sensitive grating only is sensitive to the temperature, and single sensitive grating is as the temperature compensation grating in the actual work, can compensate the pulling force sensing grating measuring error that arouses by temperature change, improves sensor measurement accuracy.
3. The utility model discloses an intermediate design has two bearing structure, and under normal operating conditions, the bearing part comprises the inside deformation power pole of sensor, spheroid and ball seat, and the deformation power pole can bear the wire dead weight and generally cover ice thickness, and deformation power pole both sides respectively paste and have a grating to monitor its gravity condition. When the icing load is too large, the sensor deformation force rod is pulled to deform or break, the ball seat part can contact the frame-shaped main body at the lower end of the sensor main body, the bearing part is changed into the frame-shaped main body and the ball seat structure of the sensor, the frame-shaped structure has large tensile capacity, the phenomenon that the transmission conductor is too heavy to be iced to cause the sensor to break to cause the conductor to fall off can be effectively prevented, and major safety accidents are avoided.
4. The sensing grating and the sensing grating of the utility model are in the same temperature condition, so that the single sensing grating can better compensate the temperature of the double sensing gratings, eliminate the measurement error caused by the temperature, better reduce the temperature drift of the fiber grating tension sensor, overcome the measurement deviation of the sensor caused by the temperature change, and improve the stability and the reliability of the measurement precision and the measurement performance;
5. The utility model discloses an outside scribbles can oneself luminous fluorescent material, can comparatively clearly mark the position of this sensor in the during operation of carrying out night or in the darkroom, can play the effect of safe suggestion effectively.
drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
FIG. 1 is a front view of the present invention;
Fig. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the whole structure of the ball seat suspension ring of the present invention;
FIG. 4 is a second schematic view of the overall structure of the ball seat suspension ring of the present invention;
FIG. 5 is a schematic view showing a usage state of the utility model;
Fig. 6 is a second schematic view of the utility model in use;
Wherein, the reference numbers in the figures: 1-hanging ring;
2-an optical fiber;
3-a sensor body;
4-fiber grating, 4 a-double sensitive grating, 4 b-single sensitive grating;
5, a force-changing rod;
6, a movable part;
7-ball seat;
8-a sensor housing;
9-frame-shaped main body;
10-a transmission fiber;
11-a stressed tab;
12-a sphere;
13-stainless steel sheet material;
14-a nut;
15-hanging ring of insulator;
16-transmission tower cross arm;
17-insulator string.
Detailed Description
The present invention will be described with reference to the following examples, but the present invention is not limited to the following embodiments.
the fiber bragg grating tension sensor with the over-range protection comprises a sensor body 3, a ball seat hanging ring and a sensor shell 8, wherein the top of the sensor body 3 is provided with the hanging ring 1, the inner part of a cavity of the sensor body 3 and the ball seat hanging ring form a detection mechanism, and the detection mechanism penetrates out of the bottom of the sensor body 3; the detection mechanism comprises a connecting optical fiber 2, an optical fiber grating 4, a deformation force rod 5, a transmission optical fiber 10 and a ball seat 7, wherein the lower end of the deformation force rod 5 is provided with a ball body 12, the upper end of a ball seat suspension loop is provided with the ball seat 7 matched with the ball body 12, and the ball body 12 is fastened in the ball seat 7; the lower end of the ball seat hanging ring is provided with a stressed pull ring 11; the fiber bragg gratings 4 are symmetrically arranged on two sides of the deformation force rod 5, the upper ends of the two fiber bragg gratings 4 are connected through the connecting optical fibers 2, and the lower ends of the two fiber bragg gratings 4 are respectively connected with the transmission optical fibers 10.
Furthermore, two hanging rings 1 are arranged, and the vertical line directions of the two hanging rings 1 are connected with the insulator; one of the fiber gratings arranged on the deformation force rod 5 is a double-sensitive grating 4a, and the double-sensitive grating 4a is sensitive to both temperature and tension; the other fiber grating is a single sensitive grating 4b, and the single sensitive grating 4b is sensitive to temperature.
specifically, the double sensitive grating 4a and the single sensitive grating 4b are connected in series and welded together through the coiled connecting optical fiber 2, and are led out by the transmission optical fiber 10.
further, sensor main part 3 is bottom open-ended frame type main part 9, and frame type main part 9 and ball seat 7 are collocated each other and are constituteed overrange protection architecture, receive the ascending power of vertical side the utility model discloses in, in vertical direction, ball seat 7 can not drop from frame type main part 9, and the size of ball seat 7 is greater than the opening size of frame type main part 9.
further, the deformation force rod 5 is made of an elastic material, and the fixed end of the deformation force rod 5 and the sensor body 3 are integrally formed.
Furthermore, a movable part 6 is arranged between the ball 12 and the ball seat 7, and the movable part 6 is a W-shaped spring leaf or spring.
Furthermore, the ball seat is in a C-shaped structure; the sensor housing 8 is a cylindrical member as a whole.
Further, the stressed pull ring 11 is of a circular structure as a whole; the ball 12 is disposed in the ball seat 7, and the ball 12 is clamped and fixed by the moving member 6 to prevent falling off.
Further, an injection molding layer, an anti-rust layer and a warning layer are sequentially sprayed on the outer surfaces of the hanging ring 1, the sensor shell 8 and the stressed pull ring 11 from inside to outside, and fluorescent powder is coated on the warning layer.
Specifically, a high-molecular wear-resistant material is injected on the injection molding layer; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the warning layer is a yellow or black reflective warning tape or a reflective color film or reflective paint.
To sum up, the utility model discloses more specific embodiment is:
The fiber grating tension sensor with the design structure and the over-range protection needs to be manufactured and installed for standby before being used.
During specific manufacturing, the fiber bragg grating tension sensor comprises a sensor main body 3, a ball seat hanging ring and a sensor shell 8. The hanging ring 1, the frame-shaped structure 9, the deformation force rod 5 and the sphere 12 on the sensor body 3 are integrated. The sensor main body 3 is formed by processing cylindrical steel, wherein two hanging rings 1 are formed by linear cutting and milling machine processing; the deformation force rod 5 and the ball body 12 are machined through a lathe; the frame structure 9 is machined by means of a milling machine. The ball seat hanging ring comprises a ball seat 7 and a stress pull ring 11 which are processed into a whole by casting technology, and the size of the ball seat 7 is matched with that of a ball body 12. The sensor housing 8 is formed by processing stainless steel pipes, and the inner diameter of the sensor housing is matched with the outer diameter of the sensor body 3.
This kind of sensor that accomplishes according to above-mentioned processing preparation needs install it as reserve before using, during the installation, at first, 3 vertical places of sensor main part, through 9 breach positions of frame type main part, hangs spheroid 12 into ball seat 7 in, a ball seat whereabouts segment naturally under the action of gravity leaves the moving part mounting hole, packs the moving part into the mounting hole, and chucking spheroid structure prevents that spheroid and ball seat from droing. A gap is left between the ball 12 and the frame-shaped body 9.
then, the two sides of the deformation force rod 5 are pasted with the gratings to monitor the stress condition of the deformation force rod, the two gratings are coiled and welded together through the connecting optical fiber 2, one of the two gratings is a double-sensitive grating 4a, the two ends of the double-sensitive grating are pasted on the deformation force rod 5 through epoxy glue, and the double-sensitive grating and the deformation force rod 5 are stressed and deformed together; and the other fiber grating is a single sensitive grating 4b, one end of the single sensitive grating is fixed by epoxy glue, the double sensitive grating 4a is sensitive to temperature and tension, the single sensitive grating 4b is sensitive to temperature, the two gratings are respectively led out to the outer side of the sensor through the transmission fiber 10, and after the installation step is completed, the sensor shell 8 is sleeved outside the sensor main body to protect the detection mechanism in the sensor, so that the installation work of the whole sensor is completed, and the whole sensor is ready for use.
When the sensor is used, the weight of the insulator string of the transmission tower line is directly measured, the upper end of the sensor is connected with the cross arm of the transmission tower, and the lower end of the sensor is connected with the hanging ring of the insulator string.
Specifically, when the sensor hanging ring is used, the sensor hanging ring 1 is hung on a cross arm of a power transmission tower through a plate 13 and a nut 14, and the stressed pull ring 11 is connected with an insulator string through an insulator hanging ring 15 and the nut. The fiber bragg grating tension sensor is designed with two running states.
The first one is under normal operating conditions, and the bearing part comprises the inside deformation power pole 5 of sensor, spheroid 12 and ball seat 7 structure, and deformation power pole 5 can bear the wire dead weight and general icing thickness, and 5 both sides gratings of deformation power pole monitor its gravity condition.
In normal operation, the double sensitive grating 4a and the single sensitive grating 4b are in the same temperature condition, and the wavelength variation of the double sensitive grating 4a is delta lambda1The variation of the wavelength of the single sensitive grating 4b is delta lambda2the compensation coefficient of the double sensitive grating to the temperature is k1The compensation coefficient of the single sensitive grating to the temperature is k2Compensation coefficient K of sensor to temperatureT＝k2/k1。
Then, the tension value measured by the fiber bragg grating tension sensor for monitoring the icing of the transmission line conductor is as follows:
F＝Δλ1-Δλ2*KT/K
wherein K is the sensitivity coefficient of the sensor and the unit is nm/KN.
the second is when the abnormal conditions appears, and sensor deformation force pole 5 is by the tensile deformation or when splitting, and ball seat 7 can contact frame type main part 9, and the bearing part is frame type main part 9 and ball seat 7 structure constitution, can effectively avoid transmission of electricity wire icing overweight and arouse the sensor fracture, and lead to the wire to drop, avoids great incident, can realize through two bearing structure the tensile accurate measurement of wire and provide the over-range protection.
Finally, although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes and modifications can be made thereto within the knowledge of those skilled in the art.
Claims (10)
1. The utility model provides a fiber grating tension sensor of over-range protection which characterized in that: the fiber bragg grating tension sensor comprises a sensor main body (3), a ball seat hanging ring and a sensor shell (8), wherein the hanging ring (1) is arranged at the top of the sensor main body (3), the intracavity part of the sensor main body (3) and the ball seat hanging ring form a detection mechanism, and the detection mechanism downwards penetrates out of the bottom of the sensor main body (3); the detection mechanism comprises a connecting optical fiber (2), an optical fiber grating (4), a deformation force rod (5), a transmission optical fiber (10) and a ball seat (7), wherein the lower end of the deformation force rod (5) is provided with a ball body (12), the upper end of a ball seat hanging ring is provided with the ball seat (7) matched with the ball body (12), and the ball body (12) is fastened in the ball seat (7); a stressed pull ring (11) is arranged at the lower end of the ball seat hanging ring; the fiber gratings (4) are symmetrically arranged on two sides of the deformation force rod (5), the upper ends of the two fiber gratings (4) are connected through the connecting optical fiber (2), and the lower ends of the two fiber gratings (4) are respectively connected with the transmission optical fiber (10).
2. The fiber grating tension sensor with over-range protection according to claim 1, wherein: the number of the hanging rings (1) is two, and the vertical line directions of the two hanging rings (1) are connected with the insulator; one of the fiber gratings arranged on the deformation force rod (5) is a double-sensitive grating (4a), and the double-sensitive grating (4a) is sensitive to temperature and tension; the other fiber grating is a single sensitive grating (4b), and the single sensitive grating (4b) is sensitive to temperature.
3. The fiber grating tension sensor with over-range protection according to claim 2, wherein: the double sensitive grating (4a) and the single sensitive grating (4b) are connected in series and welded together through a coiled connecting optical fiber (2), and are led out by a transmission optical fiber (10).
4. The fiber grating tension sensor with over-range protection according to claim 1, wherein: the sensor main body (3) is a frame-shaped main body (9) with an opening at the bottom, and the frame-shaped main body (9) and the ball seat (7) are mutually matched to form an over-range protection structure and are stressed by force in the vertical direction.
5. the fiber grating tension sensor with over-range protection according to claim 1, wherein: the deformation force rod (5) is made of elastic materials, and the fixed end of the deformation force rod (5) and the sensor main body (3) are arranged into a whole.
6. The fiber grating tension sensor with over-range protection according to claim 1, wherein: a moving part (6) is arranged between the ball body (12) and the ball seat (7), and the moving part (6) is a W-shaped spring piece or a spring.
7. the fiber grating tension sensor with over-range protection according to claim 1, wherein: the ball seat is of a C-shaped structure; the sensor housing (8) is a cylindrical member as a whole.
8. The fiber grating tension sensor with over-range protection according to claim 1, wherein: the whole stressed pull ring (11) is of a circular structure; the ball body (12) is arranged in the ball seat (7), and the ball body (12) is clamped and fixed through the moving part (6) to prevent falling off.
9. The fiber grating tension sensor with over-range protection according to claim 1, wherein: an injection molding layer, an anti-rust layer and a warning layer are sequentially sprayed on the outer surfaces of the hanging ring (1), the sensor shell (8) and the stressed pull ring (11) from inside to outside, and fluorescent powder is coated on the warning layer.
10. The fiber grating tension sensor with over-range protection according to claim 9, wherein: the injection layer is injected with a high polymer wear-resistant material; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the warning layer is a yellow or black reflective warning tape or a reflective color film or reflective paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575025.2U CN209783784U (en) | 2019-04-24 | 2019-04-24 | Fiber grating tension sensor with over-range protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575025.2U CN209783784U (en) | 2019-04-24 | 2019-04-24 | Fiber grating tension sensor with over-range protection |
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| CN209783784U true CN209783784U (en) | 2019-12-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340350A (en) * | 2021-06-07 | 2021-09-03 | 中国电力科学研究院有限公司 | Grating vector sensor, and device and method for monitoring ice-coated sag state of overhead line |
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2019
- 2019-04-24 CN CN201920575025.2U patent/CN209783784U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340350A (en) * | 2021-06-07 | 2021-09-03 | 中国电力科学研究院有限公司 | Grating vector sensor, and device and method for monitoring ice-coated sag state of overhead line |
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