CN112798139A - Hydroelectric set axle bush temperature detection optical fiber sensor - Google Patents
Hydroelectric set axle bush temperature detection optical fiber sensor Download PDFInfo
- Publication number
- CN112798139A CN112798139A CN202011549925.3A CN202011549925A CN112798139A CN 112798139 A CN112798139 A CN 112798139A CN 202011549925 A CN202011549925 A CN 202011549925A CN 112798139 A CN112798139 A CN 112798139A
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- Prior art keywords
- optical fiber
- fiber sensor
- sleeve
- bearing bush
- stainless steel
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 93
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000000523 sample Substances 0.000 claims description 47
- 229910052751 metal Inorganic materials 0.000 claims description 44
- 239000002184 metal Substances 0.000 claims description 44
- 229910001220 stainless steel Inorganic materials 0.000 claims description 44
- 239000010935 stainless steel Substances 0.000 claims description 44
- 230000001681 protective effect Effects 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 19
- 239000004809 Teflon Substances 0.000 claims description 16
- 229920006362 Teflon® Polymers 0.000 claims description 16
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000835 fiber Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a temperature detection optical fiber sensor for bearing bushes of a hydroelectric generating set, which comprises: the generator comprises a generator bearing bush and an optical fiber sensor; the surface of the generator bearing bush is provided with a mounting hole, and a mounting sleeve is fixedly mounted inside the mounting hole of the generator bearing bush. Compared with the traditional sensor, the optical fiber sensor for detecting the temperature of the motor bearing bush is easy to process and easy to install on site, has the advantages of electromagnetic interference resistance, intrinsic safety and high measurement precision due to the adoption of optical signal transmission, and can directly contact and measure the temperature of the bearing bush; according to the invention, through the design of the mounting sleeve, the spiral connector of the optical fiber sensor can be mounted through the mounting sleeve, the spiral connector can be mounted through the internal thread of the connecting sleeve in the mounting sleeve, the mounting sleeve mounted in the mounting hole of the generator bearing bush can facilitate the mounting of the optical fiber sensor, and the arrangement of the optical fiber sensor by workers is facilitated.
Description
Technical Field
The invention belongs to the technical field of bearing bush temperature detection sensors, and particularly relates to a bearing bush temperature detection optical fiber sensor of a hydroelectric generating set.
Background
The hydraulic generator is a generator which takes a hydraulic turbine as a prime mover to convert water energy into electric energy. When water flows through the water turbine, water energy is converted into mechanical energy, and a rotating shaft of the water turbine drives a rotor of the generator to convert the mechanical energy into electric energy for output. Is the main power equipment for generating electric energy in a hydropower station. The water turbine generator set is driven by the water turbine. Its rotor is short and thick, the time required for starting and grid-connection of the machine set is short, and its operation and scheduling are flexible, besides general power generation, it is specially suitable for peak-regulating machine set and accident standby machine set. The maximum capacity of the hydroelectric generating set reaches 80 ten thousand kilowatts. The rotational speed of the hydro-turbo generator set will determine the frequency of the alternating current generated, and to ensure that this frequency is stable, the rotational speed of the rotor must be stabilized. In order to stabilize the rotating speed, the rotating speed of a prime motor (a water turbine) can be controlled by adopting a closed-loop control mode, namely, a frequency signal of alternating current to be sent is sampled and fed back to a control system for controlling the opening and closing angle of a guide vane of the water turbine to control the output power of the water turbine, and the rotating speed of a generator can be stabilized by adopting a feedback control principle.
The generator of the large hydropower station is provided with an upper guide bearing bush, a thrust bearing bush and a lower guide bearing bush, the temperature of the bearing bush is kept within an allowable range when the hydroelectric generating set is in operation, the safe operation of the hydropower station is guaranteed, and the temperature of the bearing bush generally has no great change after the unit is installed and put into normal operation.
Traditional temperature detection all belongs to electric sensor, and the experience of operating throughout the year shows that electric sensor has certain drawback, detects the data inaccuracy, also brings certain potential safety hazard for the unit because electrified, for solving the current problem we propose a hydroelectric set axle bush temperature detection optical fiber sensor and solve the problem that exists among the prior art.
Disclosure of Invention
The invention aims to provide a bearing bush temperature detection optical fiber sensor of a hydroelectric generating set, which is different from an electric sensor in the prior art by the design of structures such as an optical fiber sensor probe, a transmission optical fiber and the like, and can protect internal sensor components by the protection components such as the optical fiber sensor probe with a protection component, the transmission optical fiber, a sensing probe protection cap, a stainless steel metal protective sleeve and the like; through the design of installation cover, can install fiber sensor's spiral connector through the installation cover, can carry out the screw thread installation to spiral connector through the inside adapter sleeve internal thread of installation cover, the installation cover of installation in the mounting hole through the generator axle bush can make things convenient for fiber sensor's installation to propose the problem among the prior art in solving above-mentioned background art.
In order to achieve the purpose, the invention adopts the following technical scheme: a hydroelectric set axle bush temperature detection optical fiber sensor includes:
the generator comprises a generator bearing bush and an optical fiber sensor;
the surface of the generator bearing bush is provided with a mounting hole, a mounting sleeve is fixedly mounted inside the mounting hole of the generator bearing bush, the mounting sleeve is provided with openings at two ends and comprises a flanging and an inner sleeve, and the optical fiber sensor is fixedly mounted in the mounting hole through the mounting sleeve;
optical fiber sensor includes optical fiber sensor probe, sensing probe helmet, stainless steel metal protective sleeve, transmission optic fibre, spiral connector, the flexible corrugated metal pipe of stainless steel and Teflon sheath, the one end at stainless steel metal protective sleeve is installed to spiral connector screw thread, the sensing probe helmet is installed to the other end screw thread of stainless steel metal protective sleeve, the inside embedding of stainless steel metal protective sleeve has transmission optic fibre, the one end of transmission optic fibre is connected with the optical fiber sensor probe, the other pot head of transmission optic fibre is equipped with the Teflon sheath, the outside pot head of Teflon sheath is equipped with the flexible corrugated metal pipe of stainless steel, the flexible corrugated metal pipe of stainless steel is connected in spiral connector, transmission optic fibre passes flexible corrugated metal pipe of stainless steel and Teflon sheath and extends to the outside, Teflon sheath, The transmission optical fiber is tightly combined and fixed with the stainless steel flexible metal corrugated pipe, and the sensing probe protective cap is sleeved on the optical fiber sensor probe;
the utility model discloses a generator bearing bush, including installation cover, spiral connector screw thread, the interior bottom of installation hole of generator bearing bush sets up to detect the binding face, the optical fiber sensor probe is laminated on detecting the binding face with the sensing probe helmet.
Preferably, the spiral connector is close to the optical fiber sensor probe and sets up connector external screw thread and connector internal thread, the one end of stainless steel metal protecting pipe is provided with the external screw thread and the other end is provided with the internal thread, the stainless steel metal protecting pipe passes through the external screw thread cooperation connector internal thread and installs on spiral connector.
Preferably, the sensing probe protective cap is provided with external threads and is arranged on the stainless steel metal protective sleeve through matching the internal threads of the stainless steel metal protective sleeve with the external threads.
Preferably, the optical fiber sensor probe is set as any one of a gallium arsenide optical fiber temperature sensor, a fluorescent optical fiber sensor and an optical fiber grating temperature sensor.
Preferably, a connecting sleeve internal thread is arranged on the inner side wall of the inner sleeve of the mounting sleeve, and the spiral connector is matched with the connecting sleeve internal thread of the mounting sleeve through the connector external thread.
Preferably, the bearing bush is provided with an internal thread hole, the flange of the mounting sleeve is provided with a thread through hole, and locking bolts are arranged in the internal thread hole and the thread through hole and fixedly mount the mounting sleeve in the mounting hole.
Preferably, the internal thread hole is provided with two sets of with the screw thread through-hole on the installation cover, and is two sets of the screw thread through-hole is first screw thread through-hole and second screw thread through-hole respectively, first screw thread through-hole, second screw thread through-hole are the setting of aliging with two sets of internal thread holes respectively.
Preferably, the installation sleeve is a high-temperature-resistant rubber installation sleeve, the side part of the installation sleeve is integrally formed with a first strip-shaped groove and a second strip-shaped groove which are symmetrically arranged, and the flange of the installation sleeve is fixedly connected with connecting columns which are symmetrically arranged.
The invention has the technical effects and advantages that: compared with the prior art, the invention provides an optical fiber sensor for detecting the temperature of a bearing bush of a hydroelectric generating set, which has the following advantages:
1. the invention is different from the electrical sensor in the prior art by the design of the structures such as the optical fiber sensor probe, the transmission optical fiber and the like, the protection components such as the optical fiber sensor probe with the protection component, the sensing probe protection cap, the stainless steel metal protective sleeve and the like can protect the internal sensor component, and the optical fiber sensor is easy to process and easy to install on site compared with the traditional sensor overall structure;
2. according to the invention, through the design of the mounting sleeve, the spiral connector of the optical fiber sensor can be mounted through the mounting sleeve, and the mounting of the optical fiber sensor can be facilitated through the mounting sleeve mounted in the mounting hole of the generator bearing bush.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a schematic structural diagram of a bearing bush of a generator according to the present invention;
FIG. 2 is a schematic structural view of an installation mode of the optical fiber sensor on a generator bearing bush according to the present invention;
FIG. 3 is a schematic view showing the internal cross-sectional structure of the optical fiber sensor according to the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 2 at A according to the present invention;
fig. 5 is a schematic structural view of the mounting sleeve of the present invention.
In the figure: 1. an optical fiber sensor probe; 2. a sensing probe protective cap; 3. stainless steel metal sheathing tubing; 4. a transmission optical fiber; 5. a screw connector; 51. connector external threads; 52. connector internal threads; 6. a stainless steel flexible metal bellows; 7. a Teflon sheath; 8. a generator bearing bush; 9. mounting holes; 10. an optical fiber sensor; 11. detecting the binding surface; 12. installing a sleeve; 121. flanging; 122. an inner sleeve; 123. connecting columns; 124. a first threaded through hole; 125. locking the bolt; 126. connecting sleeve internal threads; 127. a first bar-shaped groove; 128. a second strip groove; 129. a second threaded through hole; 13. and (4) an internal threaded hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a temperature detection optical fiber sensor for a bearing bush of a hydroelectric generating set, which is shown in figures 1-5 and comprises:
a generator bearing bush 8 and an optical fiber sensor 10;
the surface of the generator bearing bush 8 is provided with a mounting hole 9, a mounting sleeve 12 is fixedly mounted inside the mounting hole 9 of the generator bearing bush 8, the mounting sleeve 12 is provided with openings at two ends and comprises a flange 121 and an inner sleeve 122, and the optical fiber sensor 10 is fixedly mounted in the mounting hole 9 through the mounting sleeve 12;
the optical fiber sensor 10 comprises an optical fiber sensor probe 1, a sensing probe protective cap 2, a stainless steel metal protective sleeve 3, a transmission optical fiber 4, a spiral connector 5, a stainless steel flexible metal corrugated pipe 6 and a Teflon sheath 7, wherein the spiral connector 5 is installed at one end of the stainless steel metal protective sleeve 3 in a threaded manner, the sensing probe protective cap 2 is installed at the other end of the stainless steel metal protective sleeve 3 in a threaded manner, the transmission optical fiber 4 is embedded in the stainless steel metal protective sleeve 3, one end of the transmission optical fiber 4 is connected with the optical fiber sensor probe 1, the Teflon sheath 7 is sleeved at the other end of the transmission optical fiber 4, the stainless steel flexible metal corrugated pipe 6 is sleeved outside the Teflon sheath 7, the stainless steel flexible metal corrugated pipe 6 is connected with the spiral connector 5, the transmission optical fiber 4 penetrates through the stainless steel flexible metal corrugated pipe 6 and the Teflon sheath 7 to extend to the outside, the Teflon sheath 7, the transmission optical fiber 4 and the stainless steel flexible metal corrugated pipe 6 are tightly combined and fixed, and the sensing probe protective cap 2 is sleeved on the optical fiber sensor probe 1;
the spiral connector 5 is installed inside the installation sleeve 12 in a threaded mode, the inner bottom of the installation hole 9 of the generator bearing bush 8 is provided with a detection attachment surface 11, and the optical fiber sensor probe 1 and the sensing probe protective cap 2 are attached to the detection attachment surface 11; the spiral connector 5 is close to the optical fiber sensor probe 1 and is provided with connector external screw thread 51 and connector internal screw thread 52, and the one end of stainless steel metal protecting pipe 3 is provided with the external screw thread and the other end is provided with the internal screw thread, and stainless steel metal protecting pipe 3 passes through the external screw thread cooperation connector internal screw thread 52 and installs on spiral connector 5.
The sensing probe protective cap 2 is provided with external threads, and the sensing probe protective cap 2 is arranged on the stainless steel metal protective sleeve 3 by matching the external threads with the internal threads of the stainless steel metal protective sleeve 3; the optical fiber sensor probe 1 is set to be any one of a gallium arsenide optical fiber temperature sensor, a fluorescent optical fiber sensor and an optical fiber grating temperature sensor.
A connecting sleeve internal thread 126 is arranged on the inner side wall of the inner sleeve 122 of the mounting sleeve 12, and the screw connector 5 is in threaded fit with the connecting sleeve internal thread 126 of the mounting sleeve 12 through the connector external thread 51; the bearing bush 8 is provided with an internal thread hole 13, the flange 121 of the mounting sleeve 12 is provided with a thread through hole, the internal thread hole 13 and the thread through hole are provided with a locking bolt 125, and the locking bolt 125 fixedly mounts the mounting sleeve 12 in the mounting hole 9.
Two groups of threaded through holes are arranged on the internal threaded hole 13 and the mounting sleeve 12, the two groups of threaded through holes are respectively a first threaded through hole 124 and a second threaded through hole 129, and the first threaded through hole 124 and the second threaded through hole 129 are respectively aligned with the two groups of internal threaded holes 13; the mounting sleeve 12 is made of high-temperature-resistant rubber, a first strip-shaped groove 127 and a second strip-shaped groove 128 which are symmetrically arranged are integrally formed on the side of the mounting sleeve 12, and connecting columns 123 which are symmetrically arranged are fixedly connected to the flanging 121 of the mounting sleeve 12.
The working principle is as follows: the invention is different from the electrical sensor in the prior art by the structural design of the optical fiber sensor probe 1, the transmission optical fiber 4 and the like, the internal sensor components can be protected by the protection components such as the optical fiber sensor probe 1 with the protection component, the transmission optical fiber 4, the sensing probe protective cap 2, the stainless steel metal protective sleeve 3 and the like, and the optical fiber sensor is easy to process and easy to install on site compared with the traditional sensor overall structure as a motor bearing bush temperature detection sensor; according to the invention, through the design of the mounting sleeve 12, the spiral connector 5 of the optical fiber sensor 10 can be mounted through the mounting sleeve 12, the spiral connector 5 can be mounted through the internal thread 126 of the connecting sleeve in the mounting sleeve 12, and the mounting of the optical fiber sensor 10 can be facilitated through the mounting sleeve 12 mounted in the mounting hole 9 of the generator bearing bush 8.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a hydroelectric set axle bush temperature detection optical fiber sensor which characterized in that includes:
a generator bearing bush (8) and an optical fiber sensor (10);
the surface of the generator bearing bush (8) is provided with a mounting hole (9), a mounting sleeve (12) is fixedly mounted inside the mounting hole (9) of the generator bearing bush (8), the mounting sleeve (12) is provided with openings at two ends and comprises a flanging (121) and an inner sleeve (122), and the optical fiber sensor (10) is fixedly mounted in the mounting hole (9) through the mounting sleeve (12);
the optical fiber sensor (10) comprises an optical fiber sensor probe (1), a sensing probe protective cap (2), a stainless steel metal protective sleeve (3), transmission optical fibers (4), a spiral connector (5), a stainless steel flexible metal corrugated pipe (6) and a Teflon sheath (7), wherein the spiral connector (5) is installed at one end of the stainless steel metal protective sleeve (3) in a threaded manner, the sensing probe protective cap (2) is installed at the other end of the stainless steel metal protective sleeve (3) in a threaded manner, the transmission optical fibers (4) are embedded in the stainless steel metal protective sleeve (3), one end of the transmission optical fibers (4) is connected with the optical fiber sensor probe (1), the Teflon sheath (7) is sleeved at the other end of the transmission optical fibers (4), the stainless steel flexible metal corrugated pipe (6) is sleeved at the outer part of the Teflon sheath (7), the stainless steel flexible metal corrugated pipe (6) is connected to the spiral connector (5), the transmission optical fiber (4) penetrates through the stainless steel flexible metal corrugated pipe (6) and the Teflon sheath (7) to extend to the outside, the Teflon sheath (7), the transmission optical fiber (4) and the stainless steel flexible metal corrugated pipe (6) are tightly combined and fixed, and the sensing probe protective cap (2) is sleeved on the optical fiber sensor probe (1);
spiral connector (5) threaded mounting is inside installation cover (12), the interior bottom of mounting hole (9) of generator axle bush (8) sets up to detect binding face (11), optical fiber sensor probe (1) and sensing probe helmet (2) are laminated on detecting binding face (11).
2. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to claim 1, wherein: spiral connector (5) are close to optical fiber sensor probe (1) and set up connector external screw thread (51) and connector internal thread (52), the one end of stainless steel metal protecting pipe (3) is provided with the external screw thread and the other end is provided with the internal thread, stainless steel metal protecting pipe (3) are installed on spiral connector (5) through external screw-thread fit connector internal thread (52).
3. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to claim 2, wherein: the sensing probe protective cap is characterized in that external threads are arranged on the sensing probe protective cap (2), and the sensing probe protective cap (2) is arranged on the stainless steel metal protective sleeve (3) through the external threads matched with the internal threads of the stainless steel metal protective sleeve (3).
4. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to claim 1, wherein: the optical fiber sensor probe (1) is set to be any one of a gallium arsenide optical fiber temperature sensor, a fluorescent optical fiber sensor and an optical fiber grating temperature sensor.
5. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to claim 2, wherein: the inner side wall of the inner sleeve (122) of the mounting sleeve (12) is provided with a connecting sleeve internal thread (126), and the spiral connector (5) is in threaded fit with the connecting sleeve internal thread (126) of the mounting sleeve (12) through the connector external thread (51).
6. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to claim 1, wherein: the bearing bush (8) is provided with an internal threaded hole (13), the flange (121) of the mounting sleeve (12) is provided with a threaded through hole, locking bolts (125) are arranged in the internal threaded hole (13) and the threaded through hole, and the mounting sleeve (12) is fixedly mounted in the mounting hole (9) through the locking bolts (125).
7. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to claim 6, wherein: the threaded through holes in the internal thread holes (13) and the installation sleeve (12) are two sets of threaded through holes, the threaded through holes are respectively a first threaded through hole (124) and a second threaded through hole (129), and the first threaded through hole (124) and the second threaded through hole (129) are respectively aligned with the two sets of internal thread holes (13).
8. The hydroelectric generating set bearing bush temperature detection optical fiber sensor according to any one of claims 1 to 7, wherein: the mounting sleeve (12) is arranged as a high-temperature-resistant rubber mounting sleeve, a first strip-shaped groove (127) and a second strip-shaped groove (128) which are symmetrically arranged are integrally formed on the side portion of the mounting sleeve (12), and connecting columns (123) which are symmetrically arranged are fixedly connected to flanges (121) of the mounting sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549925.3A CN112798139A (en) | 2020-12-23 | 2020-12-23 | Hydroelectric set axle bush temperature detection optical fiber sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549925.3A CN112798139A (en) | 2020-12-23 | 2020-12-23 | Hydroelectric set axle bush temperature detection optical fiber sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112798139A true CN112798139A (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011549925.3A Pending CN112798139A (en) | 2020-12-23 | 2020-12-23 | Hydroelectric set axle bush temperature detection optical fiber sensor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560621A (en) * | 2013-11-25 | 2014-02-05 | 苏州贝得科技有限公司 | Assembly type sealing terminal assembly of closed type refrigeration motor temperature sensing element |
| CN110715753A (en) * | 2019-11-26 | 2020-01-21 | 大连三环复合材料技术开发股份有限公司 | Device and method for online monitoring of oil film temperature of composite material thrust bearing |
| CN210464597U (en) * | 2019-09-16 | 2020-05-05 | 长春华成中电科技有限公司 | Sensor installation fixed knot constructs |
| CN210893474U (en) * | 2019-11-26 | 2020-06-30 | 大连三环复合材料技术开发股份有限公司 | Device for online monitoring oil film temperature of composite material thrust bearing |
| CN211452630U (en) * | 2019-12-31 | 2020-09-08 | 福建船政交通职业学院 | Optical fiber temperature measuring probe fixing device applied to magnetic material |
| CN112051046A (en) * | 2020-09-07 | 2020-12-08 | 北京航空航天大学 | High-precision motor performance measuring device |
-
2020
- 2020-12-23 CN CN202011549925.3A patent/CN112798139A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560621A (en) * | 2013-11-25 | 2014-02-05 | 苏州贝得科技有限公司 | Assembly type sealing terminal assembly of closed type refrigeration motor temperature sensing element |
| CN210464597U (en) * | 2019-09-16 | 2020-05-05 | 长春华成中电科技有限公司 | Sensor installation fixed knot constructs |
| CN110715753A (en) * | 2019-11-26 | 2020-01-21 | 大连三环复合材料技术开发股份有限公司 | Device and method for online monitoring of oil film temperature of composite material thrust bearing |
| CN210893474U (en) * | 2019-11-26 | 2020-06-30 | 大连三环复合材料技术开发股份有限公司 | Device for online monitoring oil film temperature of composite material thrust bearing |
| CN211452630U (en) * | 2019-12-31 | 2020-09-08 | 福建船政交通职业学院 | Optical fiber temperature measuring probe fixing device applied to magnetic material |
| CN112051046A (en) * | 2020-09-07 | 2020-12-08 | 北京航空航天大学 | High-precision motor performance measuring device |
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Application publication date: 20210514 |
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