CN216433467U - Propeller deepwater online measuring device - Google Patents
Propeller deepwater online measuring device Download PDFInfo
- Publication number
- CN216433467U CN216433467U CN202123242939.3U CN202123242939U CN216433467U CN 216433467 U CN216433467 U CN 216433467U CN 202123242939 U CN202123242939 U CN 202123242939U CN 216433467 U CN216433467 U CN 216433467U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- hub cap
- cap tool
- measuring device
- propeller
- 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
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a screw deep water on-line measuring device relates to the technical field who is used for boats and ships or underwater vehicle screw deep water on-line measuring device that meets an emergency, including sensing optical fiber, data acquisition unit and hubcap frock, the hubcap frock be used for with the propeller hub fixed connection who is surveyed the screw, sensing optical fiber is used for pasting on the paddle of being surveyed the screw to obtain the structural strain information and the transmission signal of paddle, the data acquisition unit is installed in the hubcap frock, inside sensing optical fiber wears the wall and seals and introduce the hubcap frock, and be connected with the data acquisition unit, the data acquisition unit is used for sensing optical fiber signal's detection, processing and data storage. The utility model discloses a screw deep water on-line measuring device is based on OFDR distributing type fiber measurement technique, and it is capacious to measure, and the precision is high, lays simply, simple to operate, and application scope is wide, not only is applicable to the model test and measures, still can be used to the screw under boats and ships and the underwater vehicle navigation state and measure.
Description
Technical Field
The utility model relates to a propeller structure monitoring devices's technical field, more specifically say so and relate to a technical field who is used for boats and ships or underwater vehicle screw deep water to meet an emergency on-line measuring device.
Background
The propeller is an important part of a ship and an underwater vehicle, is used as the propeller of a propeller, and blades bear alternating force and moment in an uneven flow field, and can be collided or wound by foreign matters, so that the stress condition is complex and easy to damage, the strength monitoring of the underwater propeller is very necessary, and meanwhile, the underwater measurement data also provides important reference and verification basis for the design of the propeller.
The Chinese invention application with the application number of CN202011456804.4 discloses a marine propeller blade dynamic strain measuring device based on FBG, wherein the measuring device is characterized in that an FBG sensor is pasted on a blade, and then the FBG signal is led out of the water surface through an optical fiber slip ring and a bracket and then is accessed into an optical fiber demodulator for data acquisition and analysis.
However, the above measurement techniques have the following disadvantages: 1. by adopting the traditional resistance strain measurement, the underwater measurement cannot be carried out because the sensor is difficult to overcome the waterproof problem and the signal transmission problem that a plurality of cables are measured. 2. The FBG measurement scheme is adopted, the FBG sensors are optical fiber point sensors, each sensor needs to be protected after being welded when the group string is used, the process is complex, and the operation difficulty is high. In addition, limited by the demodulated light source, the sensor signal which can be demodulated by a single channel in engineering is generally about 8-10, so that the deployable measuring points are very limited, and in the blade strength analysis, the strain measurement theoretically needs more measuring points and the better. 3. The optical fiber slip ring is a rotating device in signal transmission, the using rotating speed is generally lower than 2000 rpm, and the requirement of measuring the working condition of the propeller at higher rotating speed cannot be met. In addition, the optical fiber slip ring is a non-watertight device, has low protection grade, and is only suitable for shallow water and short-time use. 4. Optical fiber signal lines in signal transmission are prevented from being wound by blades, a special support needs to be installed from the underwater to the water surface for traction, and the additionally installed support can influence a flow field, so that a measurement result is influenced. Meanwhile, the optical fiber slip ring stator mounted on the cabin below the bracket is always coaxial with the propeller, and the implementation difficulty is high. 5. The existing propeller underwater testing device is only suitable for open water test testing of a ship model pool and cannot meet the requirement of real ship deepwater measurement, and the depth of water of propellers of a real ship or an underwater vehicle generally exceeds 3 meters, even reaches hundreds of meters.
SUMMERY OF THE UTILITY MODEL
The utility model provides a screw deep water on-line measuring device has solved and has adopted among the prior art and paste the electronic strain gauge at the paddle to carry out the mode measurement of static loading on ground, perhaps carry out the problem that open water test leads to in ship model pond.
The technical scheme of the utility model is realized like this:
the utility model provides a screw deep water on-line measuring device, includes sensing optical fiber, data acquisition unit and spinner frock, the spinner frock is used for with the propeller hub fixed connection of survey screw, sensing optical fiber is used for pasting on the paddle of survey screw to obtain the structural strain information and the transmission signal of paddle, the data acquisition unit is installed in the spinner frock, and sensing optical fiber wears the wall and seals inside introducing the spinner frock to be connected with the data acquisition unit, the data acquisition unit is used for sensing optical fiber signal's detection, processing and data storage.
Furthermore, the data acquisition unit comprises a main control module, a power supply module and a signal demodulation module, wherein the main control module, the power supply module and the signal demodulation module are respectively installed in the hub cap tool, the power supply module is respectively and electrically connected with the main control module and the signal demodulation module, the signal demodulation module is in communication connection with the main control module, and the sensing optical fiber is connected with the signal demodulation module.
The optical fiber watertight connector is fixed on the hubcap tool in a wall-penetrating sealing mode, and the sensing optical fiber is led into the interior of the hubcap tool in the wall-penetrating sealing mode through the optical fiber watertight connector.
Furthermore, the optical fiber watertight connector comprises a socket and a plug, a support is arranged on the hub cap tool, an optical fiber groove is formed in the outer side wall of the hub cap tool, the sensing optical fiber is embedded in the optical fiber groove, a through hole is formed in the end face of the hub cap tool, the socket is fixedly installed at the through hole of the hub cap tool in a sealing mode, the plug is fixedly inserted into the socket, a tail fiber is arranged on the plug and fixed on the support and is in fusion joint with the sensing optical fiber in the optical fiber groove, and the socket is connected with the optical fiber channel of the signal demodulation module.
The power switch penetrates through the wall and is fixed on the hub cap tool in a sealing mode, the power switch is electrically connected with the main control module and the signal demodulation module, and the power switch is used for controlling the main control module, the signal demodulation module and the power module to be powered on or powered off.
The power switch is provided with a stud, the hub cap tool is provided with a switch hole, the stud on the power switch penetrates into the hub cap tool through the switch hole, the nut is located in the hub cap tool and is in threaded connection with the stud of the hub cap tool, and the power switch is a pressing type deep water power switch.
Further, the hub cap tool further comprises a bracket, a support bar is arranged in the hub cap tool, the bracket is fixedly installed on the support bar, and the main control module, the power supply module and the signal demodulation module are fixedly installed on the bracket.
Furthermore, the hub cap tool is in a cylindrical shape with an opening at one end, a flange plate used for being fixedly connected with a hub of the tested propeller is arranged at the opening end of the hub cap tool, and a sealing groove is formed in the end face of the flange plate.
The utility model adopts the beneficial effect that above-mentioned technical solution can reach is: the utility model discloses a screw deep water on-line measuring device is based on OFDR distributing type optical fiber measurement technique, and measurement capacity is big, and the precision is high, lays simply, simple to operate, and application scope is wide, not only is applicable to the model test and measures, still can be used to the screw under boats and ships and the underwater vehicle navigation state and measure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the present invention during measurement;
FIG. 2 is a cross-sectional view of the present invention with the sensing fiber omitted;
FIG. 3 is an exploded view of the fiber optic watertight connector and power switch;
fig. 4 and 5 are schematic views of the spinner tooling.
In the drawings, the parts corresponding to the reference numerals are as follows:
1-propeller, 2-propeller hub, 3-blade, 4-hub cap tool, 5-sensing optical fiber, 6-main control module, 7-power module, 8-signal demodulation module, 9-optical fiber watertight connector, 10-through hole, 11-bracket, 12-optical fiber groove, 13-power switch, 14-switch hole, 15-bracket, 16-support bar, 17-socket, 18-plug, 19-nut, 20-flange plate, 21-bolt, 22-stud, 23-seal groove and 24-tail fiber.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 5, the propeller deepwater online measuring device comprises a sensing optical fiber 5, a data acquisition unit, a hub cap tool 4, an optical fiber watertight connector 9, a power switch 13, a nut 19 and a bracket 15, wherein the hub cap tool 4 is used for being fixedly connected with a hub 2 of a measured propeller 1, the hub cap tool 4 is made of metal and is resistant to pressure of more than 2MPa, and the hub cap tool is used for installation and sealing protection of the data acquisition unit. The hub cap tool 4 is in a cylindrical shape with an opening at one end, a flange plate 20 used for being fixedly connected with the hub 2 of the tested propeller 1 is arranged at the opening end of the hub cap tool 4, the flange plate 20 can be fixedly connected with the hub 2 through bolts 21, a sealing groove 23 is arranged on the end face of the flange plate 20, and the sealing groove 23 can be matched with a sealing ring for use and is used for sealing between the hub cap tool 4 and the hub 2.
The sensing optical fiber 5 is used for being pasted on the paddle 3 of the detected propeller 1 and obtaining structural strain information and transmission signals of the paddle 3, the sensing optical fiber 5 is a bare optical fiber, the data acquisition unit is installed in the hub cap tool 4, the sensing optical fiber 5 penetrates through the wall and is hermetically introduced into the hub cap tool 4 and connected with the data acquisition unit, and the data acquisition unit is used for detecting and processing signals of the sensing optical fiber 5 and storing data. The data acquisition unit comprises a main control module 6, a power supply module 7 and a signal demodulation module 8, wherein the main control module 6, the power supply module 7 and the signal demodulation module 8 are respectively installed in the hub cap tool 4 and are installed in the following modes: a support strip 16 is arranged in the hub cap tool 4, the bracket 15 is fixedly installed on the support strip 16, and the main control module 6, the power supply module 7 and the signal demodulation module 8 are fixedly installed on the bracket 15.
The power module 7 is respectively electrically connected with the main control module 6 and the signal demodulation module 8, the signal demodulation module 8 is in communication connection with the main control module 6, and the sensing optical fiber 5 is connected with the signal demodulation module 8. The main control module 6 is internally provided with a high-performance CPU processing chip and a high-capacity solid state disk, is in communication connection with the signal demodulation module 8 through a network cable and is used for data analysis and data storage; the power supply module 7 provides a DC12V power supply for the signal demodulation module 8 and the main control module 6; the signal demodulation module 8 is designed by adopting a distributed optical fiber principle based on OFDR (optical frequency domain reflection technology), and can realize distributed strain measurement with the spatial resolution less than 1cm and the precision of +/-1 mu epsilon.
The optical fiber watertight connector 9 is fixed on the hubcap tool 4 in a wall-penetrating sealing mode, and the sensing optical fiber 5 is led into the hubcap tool 4 in a wall-penetrating sealing mode through the optical fiber watertight connector 9. The specific connection relationship between the optical fiber watertight connector 9 and the hub cap tool 4 is as follows: the optical fiber watertight connector 9 comprises a socket 17 and a plug 18, a support 11 is arranged on the hub cap tool 4, an optical fiber groove 12 is formed in the outer side wall of the hub cap tool 4, the sensing optical fiber 5 is embedded in the optical fiber groove 12, a through hole 10 is formed in the end face of the hub cap tool 4, the socket 17 is fixedly installed at the through hole 10 of the hub cap tool 4 in a sealing mode, the plug 18 is fixedly inserted into the socket 17, a tail fiber 24 is arranged on the plug 18, the tail fiber 24 is fixed on the support 11 and is in fusion welding with the sensing optical fiber 5 in the optical fiber groove 12, and the socket 17 is connected with an optical fiber channel of the signal demodulation module 8. The optical fiber watertight connector 9 is made of stainless steel, is an optical signal transmission device and has the pressure resistance of more than 2 MPa; the bracket 11 is used for guiding the tail fiber 24 to smoothly enter the optical fiber groove 12, so that the bending at a small angle is avoided, and the signal intensity is not influenced; the optical fiber groove 12 is used for embedding the sensing optical fiber 5 and the fusion-spliced joint of the sensing optical fiber 5 and the tail fiber 24, so that the bulge of the sensing optical fiber 5 is not damaged by construction.
The power switch 13 penetrates through the wall and is fixed on the hub cap tool 4 in a sealing mode, and the specific connection relation between the power switch 13 and the hub cap tool 4 is as follows: the power switch 13 is provided with a stud 22, the hub cap tool 4 is provided with a switch hole 14, the stud 22 on the power switch 13 penetrates into the hub cap tool 4 through the switch hole 14, and the nut 19 is positioned in the hub cap tool 4 and is in threaded connection with the stud 22 of the hub cap tool 4. The power switch 13 is electrically connected with the main control module 6 and the signal demodulation module 8, and the power switch 13 is used for controlling the main control module 6, the signal demodulation module 8 and the power module 7 to be powered on or powered off. The power switch 13 is made of stainless steel, is a press type deep water power switch, has the withstand voltage of more than 2MPa, is used for power supply control of the data acquisition unit, and after the power switch 13 is opened, software of the data acquisition unit automatically operates and works and stores data.
The utility model discloses a screw deep water on-line measuring device adopts OFDR distributed optical fiber technique and 4 seal structure designs of hub cap frock, compares with traditional measurement scheme, has following advantage:
a) the sensor has a plurality of measuring points and is simple to install. The distributed optical fiber sensing technology based on OFDR can realize distributed strain measurement with high spatial resolution less than 1cm by only sticking one sensing optical fiber 5 on the paddle 3, and can be understood that each point on the sensing optical fiber 5 is a sensor, and 1 meter of the sensing optical fiber 5 can measure at least more than 100 measuring points.
b) The signal does not need to be led out of the water surface, a lead wire support facility does not need to be additionally arranged, the construction difficulty is reduced, and meanwhile, the measurement interference is avoided. The sensing optical fiber 5 is fixed in the optical fiber groove 12 and then enters the hub cap tool 4 through the optical fiber watertight connector 9 without being led out of the water surface, and meanwhile, the influence of additionally-installed facilities on a measurement flow field is avoided.
c) The high-speed dynamic measurement and the full-working-condition coverage can be realized. The data acquisition unit is installed in the spinner frock 4, and spinner frock 4 rotates with propeller hub 2 of screw 1 together, and signal transmission need not rotatory device, does not have the rotational speed restriction.
d) And can automatically measure for a long time. The data acquisition unit of the device is provided with a power module 7, the power module 7 adopts a large-capacity lithium battery, the full-load endurance reaches more than 10 hours, after the power module is powered on, the system software of the main control module 6 automatically acquires data and stores the data, and the storage space is far larger than the data volume of 10 hours.
e) The sealing performance is good, and deep water measurement can be performed. The hub cap tool 4 is respectively sealed with the hub 2, the optical fiber watertight connector 9 and the power switch 13, and the withstand voltage is more than 2MPa, which means that the hub cap tool can be normally used in hundred meters deep water.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a screw deep water on-line measuring device, its characterized in that, includes sensing optical fiber (5), data acquisition unit and hubcap frock (4), hubcap frock (4) are used for with hub (2) fixed connection of screw (1) surveyed, sensing optical fiber (5) are used for pasting on paddle (3) of screw (1) surveyed to obtain the structure strain information and the transmission signal of paddle (3), the data acquisition unit is installed in hubcap frock (4), and inside sensing optical fiber (5) wear the wall sealed introduction hubcap frock (4) to be connected with the data acquisition unit, the data acquisition unit is used for the detection, processing and the data storage of sensing optical fiber (5) signal.
2. The propeller deepwater online measuring device of claim 1, wherein the data acquisition unit comprises a main control module (6), a power supply module (7) and a signal demodulation module (8), the main control module (6), the power supply module (7) and the signal demodulation module (8) are respectively installed in the hub cap tool (4), the power supply module (7) is respectively electrically connected with the main control module (6) and the signal demodulation module (8), the signal demodulation module (8) is in communication connection with the main control module (6), and the sensing optical fiber (5) is connected with the signal demodulation module (8).
3. The propeller deepwater online measuring device of claim 1, further comprising an optical fiber watertight connector (9), wherein the optical fiber watertight connector (9) is fixed on the hub cap tool (4) in a wall-penetrating sealing mode, and the sensing optical fiber (5) is introduced into the hub cap tool (4) through the optical fiber watertight connector (9) in the wall-penetrating sealing mode.
4. The propeller deepwater online measuring device of claim 3, the optical fiber watertight connector (9) comprises a socket (17) and a plug (18), a bracket (11) is arranged on the hub cap tool (4), an optical fiber groove (12) is arranged on the outer side wall of the hub cap tool (4), the sensing optical fiber (5) is embedded in the optical fiber groove (12), a through hole (10) is arranged on the end surface of the hub cap tool (4), the socket (17) is fixedly installed at the through hole (10) of the hub cap tool (4) in a sealing way, the plug (18) is fixedly inserted in the socket (17), the plug (18) is provided with a tail fiber (24), the tail fiber (24) is fixed on the bracket (11), and is welded with the sensing optical fiber (5) in the optical fiber groove (12), and the socket (17) is connected with the optical fiber channel of the signal demodulation module (8).
5. The propeller deepwater online measuring device of claim 2, further comprising a power switch (13), wherein the power switch (13) penetrates through the wall and is hermetically fixed on the hub cap tool (4), the power switch (13) is electrically connected with the main control module (6) and the signal demodulation module (8), and the power switch (13) is used for controlling the power-on or power-off of the main control module (6), the signal demodulation module (8) and the power module (7).
6. The propeller deepwater online measuring device of claim 5, further comprising a nut (19), wherein a stud (22) is arranged on the power switch (13), a switch hole (14) is arranged on the hub cap tool (4), the stud (22) on the power switch (13) penetrates into the hub cap tool (4) through the switch hole (14), the nut (19) is located in the hub cap tool (4) and is in threaded connection with the stud (22) of the hub cap tool (4), and the power switch (13) is a pressing type deepwater power switch.
7. The propeller deepwater online measuring device of claim 2, further comprising a bracket (15), wherein a supporting bar (16) is arranged in the hub cap tool (4), the bracket (15) is fixedly installed on the supporting bar (16), and the main control module (6), the power supply module (7) and the signal demodulation module (8) are fixedly installed on the bracket (15).
8. The propeller deepwater online measuring device of claim 1, wherein the hub cap tool (4) is in a cylindrical shape with one open end, a flange plate (20) for fixedly connecting with a hub (2) of the propeller (1) to be measured is arranged at the open end of the hub cap tool (4), and a sealing groove (23) is arranged on the end face of the flange plate (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123242939.3U CN216433467U (en) | 2021-12-22 | 2021-12-22 | Propeller deepwater online measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123242939.3U CN216433467U (en) | 2021-12-22 | 2021-12-22 | Propeller deepwater online measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216433467U true CN216433467U (en) | 2022-05-03 |
Family
ID=81318454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123242939.3U Active CN216433467U (en) | 2021-12-22 | 2021-12-22 | Propeller deepwater online measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216433467U (en) |
-
2021
- 2021-12-22 CN CN202123242939.3U patent/CN216433467U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202624586U (en) | Online sea water quality monitoring buoy | |
| CN107576314A (en) | Float type depopulated zone rivers and lakes automatic monitoring system | |
| CN101782553B (en) | System for detecting thickness and corrosion of mineshaft of gas storage well | |
| CN1940578A (en) | Non-contact inspection and its special device at marine-bottom pipeline cathode protecting state | |
| CN113549918A (en) | Contact type measuring device and method for sacrificial anode cathodic protection state of offshore submarine pipeline | |
| CN216433467U (en) | Propeller deepwater online measuring device | |
| CN104764444A (en) | Real-time monitoring instrument of submersible type profile ocean-current meter and use method thereof | |
| CN208060053U (en) | A kind of science of bridge building fiber grating pressure ring sensor | |
| CN114088343A (en) | Propeller deepwater online measuring device | |
| CN110608945B (en) | Hydrostatic pressure damage detection device and method for full sea depth buoyancy material | |
| CN218085982U (en) | Underwater device for releasing and measuring torsion of mooring rope | |
| CN210893899U (en) | Hydrostatic pressure destruction detection device of full sea deep buoyancy material | |
| CN211232436U (en) | Real-time safety monitoring and diagnosing system for submarine pipeline | |
| US7432821B1 (en) | Fiber optic measurement of bearing surface wear | |
| CN2916590Y (en) | Electronic water level meter for vessel | |
| CN208721148U (en) | One kind being used for submerged structure sound state behavior measure real-time Transmission sensor | |
| CN110986893A (en) | Water depth-attitude monitoring device of mooring system | |
| CN113358102B (en) | Device and method for shipborne measurement of amplitude of isolated wave in ocean | |
| CN110954472B (en) | Deep sea metal structure protection effect monitoring device and early warning method | |
| CN203519529U (en) | Submarine pipeline detection device | |
| CN207923187U (en) | A kind of mooring drum dynamic monitor based on dipper system | |
| CN216411590U (en) | Submarine cable burial depth monitoring system based on optical fiber temperature measurement technology | |
| CN106198719B (en) | A kind of underwater conducting material structure object defect alternating current field measurement instrument | |
| CN220063928U (en) | Integrated pipeline ultrasonic detection device for underwater operation | |
| CN217213905U (en) | Slope monitoring and early warning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |