CN114646414A - Mounting structure and mounting method of fan main shaft torque measuring device and wind turbine generator - Google Patents
Mounting structure and mounting method of fan main shaft torque measuring device and wind turbine generator Download PDFInfo
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- CN114646414A CN114646414A CN202210369839.7A CN202210369839A CN114646414A CN 114646414 A CN114646414 A CN 114646414A CN 202210369839 A CN202210369839 A CN 202210369839A CN 114646414 A CN114646414 A CN 114646414A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000004891 communication Methods 0.000 claims abstract description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 239000011889 copper foil Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000005452 bending Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/08—Slip-rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/26—Solid sliding contacts, e.g. carbon brush
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the related technical field of wind turbine generators, and aims to provide a mounting structure and a mounting method of a fan main shaft torque measuring device and a wind turbine generator. The mounting structure comprises a fan main shaft torque measuring device, wherein the fan main shaft torque measuring device comprises a torque measuring element which is arranged on a cylindrical surface of a regular cylindrical section of a main shaft; the slip ring track is encircled on the main shaft and is electrically connected with a power line and a communication line of the torque measuring element; the brush head of the carbon brush is in contact with the slip ring track, the power line of the carbon brush is electrically connected with the switch power supply, and the communication line of the carbon brush is electrically connected with the main acquisition module. The invention solves the problem that the torque measurement is inaccurate because a bending moment signal is easily introduced in the conventional fan main shaft torque measurement mode.
Description
Technical Field
The invention relates to the related technical field of wind turbine generators, in particular to a mounting structure and a mounting method of a fan main shaft torque measuring device and a wind turbine generator.
Background
The main shaft of the fan is an important part for connecting the wind wheel of the fan, the gear box and the generator set and is used for transmitting the torque output by the wind wheel end of the fan. The torque of the main shaft of the fan reflects the load capacity of the fan, is one of key data of the wind turbine generator, and needs to be measured accurately.
At present, the measurement of the torque of a main shaft of a fan is mainly performed by sticking a strain gauge to the position of the cambered surface of the main shaft, close to a wind wheel brake disc, in front of a main bearing seat, but the position is an irregular cylindrical section, and when the main shaft of the fan rotates for testing, a bending moment signal is superposed in a torque signal, so that the torque measurement is inaccurate.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that a bending moment signal is easily introduced and the torque measurement is inaccurate in a fan main shaft torque measurement mode in the prior art, so that the mounting structure and the mounting method of the fan main shaft torque measurement device and the wind turbine generator set which can accurately measure the fan main shaft torque without introducing the bending moment signal are provided.
In order to solve the above problems, the present invention provides an installation structure of a fan main shaft torque measuring device, the fan main shaft torque measuring device includes a torque measuring element, the torque measuring element is arranged on a regular cylindrical section cylindrical surface of a main shaft;
the fan main shaft torque measuring device further comprises:
a slip ring track looped on the main shaft, the slip ring track being electrically connected with the communication line of the torque measuring element;
the brush head of the carbon brush is in contact with the slip ring track, and a communication line of the carbon brush is electrically connected with the main acquisition module.
Optionally, the torque measuring element is disposed at a distance from the main bearing seat greater than or equal to the diameter of the main shaft.
Optionally, the slip ring track is further electrically connected to a power line of the torque measuring element, and the power line of the carbon brush is electrically connected to a switching power supply.
Optionally, the wind turbine main shaft torque measuring device further comprises a torque bridge module, a power line and a communication line of the torque measuring element are electrically connected with the torque bridge module, and the power line and the communication line of the torque bridge module are electrically connected with the slip ring track.
Optionally, the slip ring track is a copper foil conductive slip ring track; the width of joints at two ends of the copper foil conductive slip ring track is less than 2 cm.
Optionally, the fan spindle torque measuring device includes two carbon brushes, one ends of the two carbon brushes, which are far away from the brush head, are fixed on a support, and the support is arranged on the main bearing seat; the two carbon brushes are opened at an obtuse angle.
A mounting method of a mounting structure adopting the fan main shaft torque measuring device comprises the following steps:
arranging a torque measuring element on the cylindrical surface of the regular cylindrical section of the main shaft;
encircling a slip ring track on the spindle;
contacting brush heads of the two carbon brushes with the slip ring track;
and electrically connecting a communication line of the torque measuring element with the slip ring track, electrically connecting a power line of the carbon brush with a switch power supply, and electrically connecting the communication line of the carbon brush with a main acquisition module.
Optionally, in the step of arranging the torque measuring element on the regular cylindrical section of the main shaft, the distance from the arrangement position of the torque measuring element to the main bearing seat is greater than or equal to the diameter of the main shaft.
Optionally, the method further includes: electrically connecting a power line of the torque measuring element with the slip ring track, and electrically connecting a power line of the carbon brush with a switching power supply;
further comprising: and arranging a torque bridge module on the main shaft, electrically connecting a power line and a communication line of the torque measuring element with the torque bridge module, and electrically connecting the power line and the communication line of the torque bridge module with the slip ring track.
A wind turbine generator comprises an installation structure of the fan main shaft torque measuring device.
The invention has the following advantages:
(1) the mounting structure of the fan main shaft torque measuring device provided by the invention is characterized in that the torque measuring element is arranged on the regular cylindrical section cylindrical surface of the main shaft, and a bending moment signal is not introduced in the torque measuring process, so that the measuring signal is not mixed, the fan main shaft torque can be measured more accurately, and the load calibration is more accurate.
(2) According to the mounting structure of the fan main shaft torque measuring device, the distance from the setting position of the torque measuring element to the main bearing seat is larger than or equal to the diameter of the main shaft, and the setting position of the torque measuring element can avoid the region of stress concentration of the main bearing seat, so that a torque signal is more accurate, and the accuracy of a measuring result is ensured.
(3) According to the mounting structure of the fan spindle torque measuring device, the double carbon brushes are used for communication, so that stable connection and stable and accurate signals can be ensured; and the copper foil conductive slip ring track is adopted to be tightly attached to the regular cylindrical section cylindrical surface surrounding the main shaft, on one hand, the copper foil is soft in texture, the regular cylindrical section cylindrical surface can be well attached, on the other hand, the copper foil conductive slip ring track can be freely cut, and the copper foil conductive slip ring track is adaptive to main shafts of various sizes, and is wide in application range.
(4) According to the mounting structure of the wind turbine main shaft torque measuring device, the slip ring track is used for supplying power and communicating the torque bridge circuit module, stable communication can be guaranteed, signals are not easy to lose, meanwhile, the problem of power supply of the torque bridge circuit module is solved, the torque bridge circuit module can carry out measurement for a long time, and different use requirements are met.
(5) The installation structure of the fan spindle torque measuring device provided by the invention adopts a wired power supply and communication scheme of the double-carbon brush slip ring, can obviously improve the accuracy of torque measurement, solves the problem of long-time power supply and communication of a torque measuring element, and has the characteristics of good practicability and simplicity and convenience in operation.
(6) According to the installation method of the fan main shaft torque measuring device, the torque measuring element is arranged on the regular cylindrical section cylindrical surface of the main shaft, so that a bending moment signal is not introduced in the torque measuring process, the signals are not mixed, the fan main shaft torque can be measured more accurately, and the load calibration is more accurate.
(7) The wind turbine generator comprises the mounting structure of the wind turbine main shaft torque measuring device, torque signals can be accurately collected and measured, bending moment signals cannot be mixed in the signals, and the wind turbine generator can enable the torque measurement of the wind turbine main shaft to be more accurate.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view showing a mounting structure of a wind turbine main shaft torque measuring device according to the present invention;
FIG. 2 shows a front view of FIG. 1;
fig. 3 shows a flow chart of a method for mounting the mounting structure of the wind turbine main shaft torque measuring device.
Description of reference numerals:
the device comprises a main shaft 1, a regular cylindrical section 101, a torque measuring element 2, a torque bridge module 3, a main bearing seat 4, a slip ring track 5, a carbon brush 6 and a support 7.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 and 2 show a preferred embodiment of the mounting structure of the wind turbine main shaft torque measuring device of the present invention. The mounting structure is applied to a wind generating set (wind generating set for short) and used for measuring the torque of a main shaft of the wind generating set.
The mounting structure of the main shaft torque measuring device comprises a fan main shaft torque measuring device, wherein the fan main shaft torque measuring device comprises a torque measuring element 2, a slip ring track 5 and at least two carbon brushes 6.
The torque measuring element 2 is arranged on a regular cylindrical section cylindrical surface 101 of the main shaft 1, the regular cylindrical section of the main shaft refers to a section of a complete cylinder on the main shaft, the cylindrical surface of the section of the cylinder is the regular cylindrical section cylindrical surface 101, and the section of the cylindrical surface is smooth and regular and has no conditions of depression, bulge or fracture and the like. The reason why the regular cylindrical section cylindrical surface 101 on the main shaft 1 is selected as the position for arranging the torque measuring element 2 is that the main shaft torque is tested on the regular cylindrical section cylindrical surface, so that a bending moment signal is not introduced, and signal aliasing is not caused, thereby ensuring the measurement accuracy of the torque. In the present embodiment, the regular cylindrical section 101 of the main shaft 1 is selected from a section of cylindrical surface behind the main bearing seat 4.
Further, the distance from the installation position of the torque measuring element 2 to the main bearing seat 4 is greater than or equal to the diameter of the main shaft 1, and in the embodiment, the distance from the installation position of the torque measuring element 2 to the main bearing seat 4 is equal to the diameter of the main shaft 1, and the position can avoid the region of the main bearing seat with concentrated stress, thereby improving the accuracy of the test signal. In addition, in the present embodiment, the torque measuring element 2 is a strain gauge, and the torque measuring element 2 is disposed on the regular cylindrical segment cylindrical surface 101 by means of pasting, so as to ensure the firmness of the torque measuring element 2.
A slip ring track 5 is looped around the main shaft 1, the slip ring track 5 being electrically connected with the power supply line and the communication line of the torque measuring element 2. For convenience of arrangement, the slip ring track 5 is also arranged on the regular cylindrical section cylindrical surface 101, and the slip ring track 5 tightly surrounds the regular cylindrical section cylindrical surface 101 for one circle to ensure the stability of connection. In this embodiment, the slip ring track 5 is a copper foil conductive slip ring track, and the slip ring track made of the material is soft and long, and can be cut according to the size of the spindle. The two ends of the copper foil conductive slip ring track are connected to form the annular slip ring track, the width of joints at the two ends is not too large so as to avoid influencing signal transmission, and the optimal width is less than 2cm, and in the embodiment, the width of the joints at the two ends of the copper foil conductive slip ring track is 1 cm. In addition, in order to ensure the firmness of the arrangement of the slip ring rail 5, the slip ring rail 5 is adhered to the regular cylindrical segment cylindrical surface 101.
In this embodiment, the wind turbine main shaft torque measuring device comprises two carbon brushes 6, and brush heads of the two carbon brushes 6 are in contact with the slip ring track 5, preferably in close contact, so as to ensure the stability of the electrical connection. In this embodiment, the ends of the two carbon brushes 6 away from the brush head are fixed on the support 7, and the support 7 is disposed on the main bearing seat 4. Specifically, the support 7 is arranged above the spindle 1, the support 7 has a certain height from the cylindrical surface of the spindle 1, one ends of the two carbon brushes 6 far away from the brush head are fixed on the lower surface of the support 7, and the brush heads of the two carbon brushes 6 extend downwards. In addition, in order to enable the brush heads of the two carbon brushes 6 to be in close contact with the slip ring track 5, the two carbon brushes 6 are opened at an obtuse angle, and the specific opening angle can be adjusted according to the diameter of the spindle 1, which is not limited in the present invention. The position stability that carbon brush 6 set up can be guaranteed through setting up support 7 to guarantee torque test's stability and accuracy.
The power cord of carbon brush 6 is connected with switching power supply electricity, and the communication line of carbon brush 6 is connected with main collection module electricity, and switching power supply and main collection module set up in gathering the cabinet. For convenience of operation, the above-mentioned electrical connection methods all adopt a welding method. The main acquisition module is used for summarizing data of each channel so as to perform subsequent signal processing.
Further, in this embodiment, the wind turbine main shaft torque measuring apparatus further includes a torque bridge module 3, a power line and a communication line of the torque measuring element 2 are both electrically connected to the torque bridge module 3, and a power line and a communication line of the torque bridge module 3 are both electrically connected to the slip ring track 5. That is, the power supply line and the communication line of the torque measuring element 2 are electrically connected to the slip ring track 5 via the torque bridge module 3. The electric connection mode adopts a welding mode. The slip ring track 5 supplies power and communicates with the torque bridge module 3, so that stable communication can be ensured, signals are not prone to packet loss, and long-time measurement can be achieved. The torque bridge module 3 is used for converting the analog signal collected by the torque measuring element 2 into a digital signal, and then transmitting the digital signal to the main collection module.
The torque bridge module 3 is disposed on the surface of the main shaft 1, and in the present embodiment, for convenience of arrangement, the torque bridge module 3 is also disposed on the regular cylindrical segment cylindrical surface 101, and the distance between the torque measuring element 2 and the torque bridge module 3 is relatively short, so that subsequent wiring is facilitated. In the present embodiment, the torque bridge module 3 is a strain acquisition module, and the torque bridge module 3 is disposed on the regular cylindrical segment cylindrical surface 101 by means of adhesion, so as to ensure the firmness of the torque bridge module 3.
As shown in fig. 3, the present embodiment further provides a mounting method of the mounting structure of the wind turbine main shaft torque measuring apparatus. The mounting method is used for mounting the torque measuring device on the main shaft of the fan of the wind turbine generator set, and preparation is made for subsequent main shaft torque measuring work.
Specifically, the installation method includes:
firstly, arranging a torque measuring element 2 on a regular cylindrical section cylindrical surface 101 of a main shaft 1;
in the present embodiment, the torque measuring element 2 is a strain gauge, and the torque measuring element 2 is disposed on the regular cylindrical segment cylindrical surface 101 by means of pasting, so as to ensure the firmness of the torque measuring element 2.
Preferably, the distance from the installation position of the torque measuring element 2 to the main bearing seat 4 is greater than or equal to the diameter of the main shaft 1, and in the embodiment, the distance from the installation position of the torque measuring element 2 to the main bearing seat 4 is equal to the diameter of the main shaft 1, and the position can avoid the region of the main bearing seat with concentrated stress, thereby improving the accuracy of the test signal.
Secondly, a slip ring track 5 is wound on the main shaft 1;
for convenience of arrangement, the slip ring track 5 is also arranged on the regular cylindrical section cylindrical surface 101, and the slip ring track 5 is tightly wound on the regular cylindrical section cylindrical surface 101 for a circle to ensure the stability of connection. The slip ring track 5 adopts the copper foil to lead electrical slip ring track, and the slip ring track texture of this kind of material is softer and for rectangular form, can tailor according to main shaft size, when encircleing regular cylinder section cylinder 101 on, pastes tight regular cylinder section cylinder 101 with the copper foil and encircles to bond its both ends together, accomplish and paste tightly to encircle. The width of the joint at the two ends of the copper foil conductive slip ring track is not too large so as to avoid affecting signal transmission, and is preferably less than 2cm, and in the embodiment, the width of the joint at the two ends of the copper foil conductive slip ring track is 1 cm. In addition, in order to ensure the firmness of the arrangement of the slip ring rail 5, the slip ring rail 5 is adhered to the regular cylindrical segment cylindrical surface 101.
Step three, the brush heads of the two carbon brushes 6 are contacted with the slip ring track 5;
preferably, the brush heads of the two carbon brushes 6 are in close contact with the slip ring track 5 to ensure stability and reliability of the electrical connection.
And step four, electrically connecting a power line and a communication line of the torque measuring element 2 with the slip ring track 5, electrically connecting a power line of the carbon brush 6 with a switch power supply, and electrically connecting the communication line of the carbon brush 6 with the main acquisition module.
After the positional arrangement of the torque bridge module 2 and the carbon brushes 6 is completed, it is necessary to connect the power supply line and the communication line. The power line and the communication line of the torque bridge circuit module 2 are electrically connected with the slip ring track 5, the power line of the carbon brush 6 is electrically connected with the switching power supply, the communication line of the carbon brush 6 is electrically connected with the main acquisition module, and the switching power supply and the main acquisition module are arranged in the acquisition cabinet. For convenience of operation, the above-mentioned electrical connection methods all adopt a welding method.
Further, in order to ensure the accuracy of signal acquisition, the installation method further comprises the steps of arranging the torque bridge module 3 on the main shaft 1, electrically connecting the power line and the communication line of the torque measuring element 2 with the torque bridge module 3, and electrically connecting the power line and the communication line of the torque bridge module 3 with the slip ring track 5.
Specifically, the torque bridge module 3 is disposed on the surface of the main shaft 1, and in the present embodiment, for convenience of arrangement, the torque bridge module 3 is also disposed on the regular cylindrical segment cylindrical surface 101, and the distance between the torque measuring element 2 and the torque bridge module 3 is relatively short, so that subsequent wiring is facilitated. In the present embodiment, the torque bridge module 3 is a strain acquisition module, and the torque bridge module 3 is disposed on the regular cylindrical segment cylindrical surface 101 by means of adhesion, so as to ensure the firmness of the torque bridge module 3.
The power line of the torque bridge module 3 and the communication line of the torque bridge module 3 are electrically connected with the slip ring track 5, and the torque bridge module 2 is supplied with power and communicated through the slip ring track 5, so that the stability of signals can be ensured, the packet loss is not easy to occur, the power supply time is long, and the long-time test work of the torque bridge module 2 can be realized. For convenience of operation, the above-mentioned electrical connection methods all adopt a welding method.
In addition, in order to ensure safety, attention should be paid to line protection when wiring and routing.
The embodiment also provides a wind turbine generator, which comprises the mounting structure of the wind turbine main shaft torque measuring device of the embodiment. The wind turbine generator can detect the main shaft torque during operation so as to meet the torque detection requirement.
In other embodiments, the torque measuring element 2 may also be a grating sensor or other type of torque measuring sensor, and correspondingly, the torque bridge module 3 may be a grating demodulator module or other type of torque bridge module, which is not limited in the present invention.
In other embodiments, the width of the joints at the two ends of the copper foil conductive slip ring track can also be 1.8cm, 1.5 cm and the like, as long as the width of the joints is less than 2 cm.
In other embodiments, the torque measuring element 2 may be disposed at a distance from the main bearing housing 4 greater than the diameter of the main shaft 1 according to actual measurement conditions, and the object of the present invention can also be achieved.
In other embodiments, the wind turbine main shaft torque measuring device may include three, four, etc. carbon brushes 6. Furthermore, in other embodiments, the torque measuring element 2 may not be supplied with power via the slip ring track 5 and the carbon brushes 6, but instead a power supply battery may be integrated inside the torque measuring element 2, and likewise the torque bridge module 3 may not be supplied with power via the slip ring track 5 and the carbon brushes 6, but instead a power supply battery may be integrated inside the torque bridge module 3, and the object of the invention is likewise achieved. In addition, when the torque bridge module is integrated on the main acquisition module, the wind turbine main shaft torque measurement device may not include the torque bridge module 3, and at this time, the main acquisition module is configured to convert an analog signal acquired by the torque measurement element 2 into a digital signal, and summarize data of each channel to perform subsequent signal processing.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A mounting structure of a fan main shaft torque measuring device, the fan main shaft torque measuring device comprises a torque measuring element (2), and is characterized in that the torque measuring element (2) is arranged on a regular cylindrical section cylindrical surface (101) of a main shaft (1);
the fan main shaft torque measuring device further comprises:
a slip ring track (5) looped on the main shaft (1), the slip ring track (5) being electrically connected with a communication line of the torque measuring element (2);
the carbon brush comprises at least two carbon brushes (6), brush heads of the carbon brushes (6) are in contact with the slip ring track (5), and communication lines of the carbon brushes (6) are electrically connected with a main acquisition module.
2. The mounting structure of a wind turbine main shaft torque measuring device according to claim 1, wherein the torque measuring element (2) is disposed at a distance from a main bearing housing (4) greater than or equal to a diameter of the main shaft (1).
3. The mounting structure of a torque measuring device of a main shaft of a wind turbine as claimed in claim 1, wherein the slip ring track (5) is further electrically connected with a power line of the torque measuring element (2), and a power line of the carbon brush (6) is electrically connected with a switch power supply.
4. Mounting arrangement for a wind turbine main shaft torque measuring device according to claim 3, characterized in that it further comprises a torque bridge module (3), the power and communication lines of the torque measuring element (2) being electrically connected to the torque bridge module (3), the power and communication lines of the torque bridge module (3) being electrically connected to the slip ring track (5).
5. The mounting structure of a wind turbine main shaft torque measuring device according to claim 1, wherein the slip ring track (5) is a copper foil conductive slip ring track; the width of the joints at the two ends of the copper foil conductive slip ring track is less than 2 cm.
6. The mounting structure of the torque measuring device of the fan main shaft according to claim 1, wherein the torque measuring device of the fan main shaft comprises two carbon brushes (6), one ends of the two carbon brushes (6) far away from the brush head are fixed on a bracket (7), and the bracket (7) is arranged on a main bearing seat (4); the two carbon brushes (6) are opened at an obtuse angle.
7. A method for installing a fan main shaft torque measuring device is characterized by comprising the following steps:
a torque measuring element (2) is arranged on a regular cylindrical section cylindrical surface (101) of the main shaft (1);
a slip ring track (5) is wound on the main shaft (1);
the brush heads of the two carbon brushes (6) are contacted with the slip ring track (5);
and electrically connecting a communication line of the torque measuring element (2) with the slip ring track (5), and electrically connecting a communication line of the carbon brush (6) with a main acquisition module.
8. The mounting method according to claim 7, wherein in the step of arranging the torque measuring element (2) on the regular cylindrical segment cylinder (101) of the main shaft (1), the distance from the position where the torque measuring element (2) is arranged to the main bearing housing (4) is greater than or equal to the diameter of the main shaft (1).
9. The installation method according to claim 7,
further comprising: electrically connecting a power line of the torque measuring element (2) with the slip ring track (5) and electrically connecting a power line of the carbon brush (6) with a switching power supply;
further comprising: and arranging a torque bridge module (3) on the main shaft (1), electrically connecting a power line and a communication line of the torque measuring element (2) with the torque bridge module (3), and electrically connecting the power line and the communication line of the torque bridge module (3) with the slip ring track (5).
10. A wind turbine generator system is characterized in that: mounting arrangement comprising a wind turbine main shaft torque measuring device according to any of the preceding claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210369839.7A CN114646414A (en) | 2022-04-08 | 2022-04-08 | Mounting structure and mounting method of fan main shaft torque measuring device and wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210369839.7A CN114646414A (en) | 2022-04-08 | 2022-04-08 | Mounting structure and mounting method of fan main shaft torque measuring device and wind turbine generator |
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| CN114646414A true CN114646414A (en) | 2022-06-21 |
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| CN202210369839.7A Pending CN114646414A (en) | 2022-04-08 | 2022-04-08 | Mounting structure and mounting method of fan main shaft torque measuring device and wind turbine generator |
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