CN117685871B - Guide vane opening monitoring method, monitoring device and computer readable storage medium - Google Patents
Guide vane opening monitoring method, monitoring device and computer readable storage medium Download PDFInfo
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- CN117685871B CN117685871B CN202410156527.7A CN202410156527A CN117685871B CN 117685871 B CN117685871 B CN 117685871B CN 202410156527 A CN202410156527 A CN 202410156527A CN 117685871 B CN117685871 B CN 117685871B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 238000012806 monitoring device Methods 0.000 title claims description 9
- 238000012360 testing method Methods 0.000 claims abstract description 62
- 238000006073 displacement reaction Methods 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 238000004088 simulation Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/183—Adjustable vanes, e.g. wicket gates
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a method and a device for monitoring an opening of a guide vane, and a computer readable storage medium, wherein the method for monitoring the opening of the guide vane comprises the steps of obtaining a first voltage of an angular displacement sensor on a guide vane shaft in a test model; and determining a guide vane opening value in the test model according to the first voltage. The guide vane opening monitoring method can monitor the opening value of the guide vane in the water pump turbine model test, further can accurately control the opening size of the movable guide vane to regulate and control the relevant parameter performance of the water pump turbine, and ensures the accuracy of test results.
Description
Technical Field
The invention relates to the technical field of water pump turbine guide vane measurement, in particular to a guide vane opening monitoring method, a guide vane opening monitoring device and a computer readable storage medium.
Background
The water pump turbine is a power machine for realizing the mutual conversion of water flow energy and rotary mechanical energy, and is one of the most important component products in the hydropower industry, so that the research and development test of the water pump turbine is extremely important. In the research and development test of the existing hydraulic model of the water pump turbine, the flow rate, the working condition output of the water pump turbine, the working condition input of the water pump, the efficiency and other parameter performances are mainly considered. But the parameter performance is related to the opening size of the movable guide vane of the water pump turbine, and the related parameter performance of the water pump turbine can be regulated and controlled by controlling the opening size of the movable guide vane.
However, since the movable guide vanes are located in the closed cavity of the test device, the distance between two adjacent guide vanes cannot be directly and accurately measured to judge the opening value of the guide vanes in the water pump turbine test process, and further, the test working conditions cannot be accurately regulated and judged.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a guide vane opening monitoring method, a monitoring device and a computer readable storage medium, and aims to solve the technical problem that the guide vane opening value can not be measured in the prior art water pump turbine model test operation.
The embodiment of the invention provides a guide vane opening monitoring method, which comprises the following steps:
acquiring a first voltage of an angular displacement sensor on a guide vane shaft in a test model;
and determining a guide vane opening value in the test model according to the first voltage.
In some embodiments of the invention, the determining a vane opening value in the test model from the first voltage includes:
determining a corresponding guide vane opening angle value according to the first voltage;
and determining the guide vane opening value according to the guide vane opening angle value.
In some embodiments of the present invention, the determining, according to the first voltage, a vane opening angle value corresponding to the first voltage includes:
and determining a guide vane opening angle value corresponding to the first voltage according to a first conversion relation and the first voltage.
In some embodiments of the invention, the vane opening monitoring method further comprises:
before the first voltage of the angular displacement sensor on the guide vane shaft in the test model is obtained, the first conversion relation is determined according to a plurality of first voltages which are measured in advance and the guide vane opening angle value corresponding to each first voltage.
In some embodiments of the invention, the vane opening monitoring method further comprises:
before the first voltage of the angular displacement sensor on the guide vane shaft in the test model is obtained, a plurality of first voltages and the guide vane opening angle value corresponding to each first voltage are obtained through simulation or test;
and determining the first conversion relation according to the first voltages and the guide vane opening angle value corresponding to each first voltage.
In some embodiments of the present invention, the determining the vane opening value according to the vane opening angle value includes:
and determining the guide vane opening value according to a second conversion relation and the guide vane opening angle value.
In some embodiments of the invention, the vane opening monitoring method further comprises:
before the first voltage of the angular displacement sensor on the guide vane shaft in the test model is obtained, obtaining a plurality of guide vane opening angle values and the guide vane opening value corresponding to each guide vane opening angle value based on simulation software;
and determining the second conversion relation by the guide vane opening angle values and the guide vane opening values corresponding to the guide vane opening angle values.
In some embodiments of the invention, the determining a vane opening value in the test model from the first voltage includes:
and determining the guide vane opening value corresponding to the first voltage according to a third conversion relation and the first voltage.
The embodiment of the invention also provides a monitoring device, which comprises:
the voltage acquisition module is used for acquiring a first voltage of an angular displacement sensor on the guide vane shaft in the test model;
and the control module is used for determining the opening value of the guide vane in the test model according to the first voltage.
Embodiments of the present invention also provide a computer readable storage medium having stored thereon a computer program to be loaded by a processor for the steps in the above-mentioned vane opening monitoring method.
The embodiment of the invention provides a guide vane opening monitoring method, a monitoring device and a computer readable storage medium. The guide vane opening monitoring method can monitor the opening value of the guide vane in a water pump turbine model test, and further can accurately control the opening size of the movable guide vane to regulate and control the performance of relevant parameters of the water pump turbine, so that the accuracy of test results is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for monitoring a vane opening according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for monitoring a vane opening according to another embodiment of the present invention;
FIG. 3 is a schematic structural view of a vane opening monitoring device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a test model according to an embodiment of the present invention;
FIG. 5 is a schematic view of the experimental model according to an embodiment of the present invention (bottom view);
FIG. 6 is a schematic view of the structure of the top cover and the driving ring of the test model according to one embodiment of the present invention.
Reference numerals: 10. a control module; 20. a voltage acquisition module; 100. a model top cover; 200. a crank arm; 300. a guide vane shaft; 400. a guide vane; 500. a drive ring; 60. a drive assembly; 600. a support; 601. a driving rod; 602. a first limiting member; 603. a second limiting piece; 604. a brake member; 700. a driving member; 800. an angular displacement sensor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
As shown in fig. 1-6, the present invention provides a method for monitoring a guide vane opening, comprising:
s400, acquiring a first voltage of an angular displacement sensor on a guide vane shaft in the test model.
The guide vane on the water pump turbine model in the water pump turbine test is connected to the guide vane shaft, the guide vane rotates along with the guide vane shaft, the angular displacement sensor is arranged on the guide vane shaft, and the rotation angle of the guide vane can be monitored by monitoring the rotation angle of the guide vane shaft. The first voltage on its angular displacement sensor is related to the angle of rotation of the vane shaft and the angle at which it is located.
The first voltage is a voltage of a stable value of the angular displacement sensor within a certain time, and the voltage change of the angular displacement sensor is related to the movement of the guide vane shaft, and when the guide vane shaft is fixed, the guide vane shaft is in a fixed state. That is, the guide vane shaft (guide vane) is ensured to be in a non-moving state, so that the guide vane opening value obtained according to the first voltage is accurate.
S500, determining a guide vane opening value in a test model according to the first voltage.
And determining a corresponding guide vane opening value according to the determined first voltage through a preset conversion relation.
It can be appreciated that the method for monitoring the opening of the guide vane determines the opening value of the guide vane in the test model by acquiring the first voltage of the angular displacement sensor on the guide vane shaft in the test model. The guide vane opening monitoring method can monitor the opening value of the guide vane in a water pump turbine model test, and further can accurately control the opening size of the movable guide vane to regulate and control the performance of relevant parameters of the water pump turbine, so that the accuracy of test results is ensured.
In some embodiments, S500, determining a vane opening angle value in the test model from the first voltage includes:
s520, determining a corresponding guide vane opening angle value according to the first voltage.
The guide vane opening angle value is the angle degree formed between two adjacent guide vanes, and as the water pump turbine model is provided with a plurality of movable guide vanes which are equidistantly arranged, the movable guide vanes are arranged on the guide vane shaft, and the directions of all the movable guide vanes are consistent in initial installation, so that the angle degree of any two adjacent guide vanes in the water pump turbine model is the guide vane opening angle value of the water pump turbine model.
In the test process, all movable guide vanes in the water pump turbine model move in a consistent mode. Along with the rotation of the guide vane shaft, the angle value of the guide vane opening also changes, and the voltage of the angular displacement sensor also changes and stabilizes.
S540, determining the guide vane opening value according to the guide vane opening angle value.
Wherein, because all movable guide vanes in the water pump turbine model move in unison, each fixed guide vane opening angle value corresponds to a determined guide vane opening value. Therefore, the corresponding guide vane opening value can be determined according to the corresponding conversion relation by the determined guide vane opening angle value.
In some embodiments, S520, determining a vane opening angle value corresponding thereto from the first voltage includes:
s521, determining a guide vane opening angle value corresponding to the first voltage according to the first conversion relation and the first voltage.
The first conversion relation may be a functional relation between the first voltage and the vane opening angle value, and the vane opening angle value may be obtained according to the first voltage when the first voltage is known.
The first conversion relationship may be a section correspondence relationship, for example, when the first voltage is within a certain voltage section range, the first voltages within the voltage section range all correspond to the same opening angle value of the guide vane.
In some embodiments, the vane opening monitoring method further comprises:
s100, before first voltages of the angular displacement sensors on the guide vane shafts in the test model are obtained, determining a first conversion relation according to a plurality of first voltages which are measured in advance and guide vane opening angle values corresponding to each first voltage.
In the non-experimental process, the guide vane shaft is independently controlled to rotate for a certain angle, the first voltage of the angular displacement sensor on the guide vane shaft at the moment is obtained, and the opening angle value of the guide vane at the moment and the first voltage corresponding to the opening angle value of the guide vane at the moment are recorded. Repeating the above actions to obtain at least five groups of guide vane opening angle values and a first voltage. The at least five groups of guide vane opening angle values and the first voltage are stored in the corresponding processing center in advance, and the processing center fits to obtain a functional relation between the guide vane opening angle values and the first voltage according to the at least five groups of guide vane opening angle values and the first voltage. From this functional relation, given the first voltage, the corresponding vane opening angle value can be determined.
It should be noted that the obtained opening angle value of the guide vane and the first voltage are both obtained by actual measurement.
In some embodiments, the vane opening monitoring method further comprises:
and S100, obtaining a plurality of first voltages and guide vane opening angle values corresponding to each first voltage through simulation before obtaining the first voltages of the angular displacement sensor on the guide vane shaft in the test model.
It should be noted that, through simulation, that is, through simulation software, a plurality of first voltages and the guide vane opening angle value corresponding to each first voltage are obtained. Inputting performance parameters of the angular displacement sensor into simulation software, and obtaining at least five groups of first voltages and corresponding guide vane opening angle values through the simulation software.
And through the test, namely the test system of the water pump turbine simulation device is used for testing and recording a plurality of obtained first voltages and the opening angle value of the guide vane corresponding to each first voltage for a plurality of times.
S200, determining a first conversion relation according to a plurality of first voltages and the guide vane opening angle value corresponding to each first voltage.
The processing center fits and obtains a functional relation between the opening angle value of the guide vane and the first voltage, namely a first conversion relation according to data obtained by the test system/simulation software. From this functional relation, given the first voltage, the corresponding vane opening angle value can be determined.
In some embodiments, S540, determining the vane opening value from the vane opening angle value includes:
s541, determining a guide vane opening value according to the second conversion relation and the guide vane opening angle value.
Wherein the second conversion relation may be a functional relation with respect to the vane opening value and the vane opening angle value, i.e. the second conversion relation. From this functional relationship, given the vane opening angle values, the corresponding vane opening values may be determined.
In some embodiments, the vane opening monitoring method further comprises:
s310, obtaining a plurality of guide vane opening angle values and guide vane opening values corresponding to each guide vane opening angle value based on simulation software before obtaining a first voltage of an angular displacement sensor on a guide vane shaft in a test model.
The state of two adjacent guide vanes can be simulated when a plurality of guide vane opening angle values are obtained through simulation software, and then the guide vane opening values of the two guide vanes are determined. At least ten groups of guide vane opening values and guide vane opening angle values opposite to the guide vane opening values are obtained through simulation software.
S320, determining a second conversion relation by the plurality of guide vane opening angle values and the guide vane opening value corresponding to each guide vane opening angle value.
And fitting the processing center according to the at least ten groups of guide vane opening values and the guide vane opening angle values opposite to the guide vane opening values to obtain a functional relation between the guide vane opening angle values and the guide vane opening values, and determining the guide vane opening values under the condition of knowing the guide vane opening angle values according to the functional relation.
In some embodiments, the vane opening monitoring method includes:
s520, determining a corresponding guide vane opening angle value according to the first voltage.
S540, determining the guide vane opening value according to the guide vane opening angle value.
S600, determining an actual guide vane opening value according to a preset guide vane opening value compensation value.
Wherein, the actual guide vane opening value,wherein, the->For the actual guide vane opening value, +.>For the guide vane opening value, the guide vane opening value compensation value is +.>。
Wherein,。
wherein,mounting compensation errors for the guide vanes; />The error is measured for the angular displacement sensor.
Wherein, in order to obtain the guide vane installation compensation error, when the water pump turbine model is assembled, the guide vane opening value between adjacent guide vanes is tested，/>，/>，.../>The method comprises the steps of carrying out a first treatment on the surface of the And calculating an average guide vane opening value +/based on the measured guide vane opening value>，The method comprises the steps of carrying out a first treatment on the surface of the And calculating the maximum error of the opening value of the guide vane according to the average opening value of the guide vane>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>There are two calculation modes, one is +.>That is, the largest of the vane opening values minus the average vane opening value; the other is +.>I.e. the average vane opening value minus the minimum of the vane openings; obtaining a guide vane installation compensation error of +.>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Get->Andis the maximum value of (a).
Wherein, in order to obtain the test error of the angular displacement sensor, the average guide vane opening value is based on the conversion relation between the guide vane opening value and the guide vane opening angle value in the previous embodimentDetermining and averaging the vane opening value +.>Corresponding guide vane opening angle value +.>The method comprises the steps of carrying out a first treatment on the surface of the Calibration coefficient by an angular displacement sensor +.>，/>，/>And the voltage value of the angular displacement sensor at this time +.>Obtaining the guide vane opening angle value +.>Based on the data, obtaining the test error of the angular displacement sensor as +.>。
That is to say,。
in some embodiments, S500, determining a vane opening value in the test model from the first voltage includes:
s520, determining a guide vane opening value corresponding to the first voltage according to the third conversion relation and the first voltage.
The data obtained by simulation of the processing center can be fitted to a functional relation between the first voltage and the opening value of the guide vane, and the functional relation is a third conversion relation. From this functional relationship, the vane opening value is determined given the first voltage.
The processing center fits the multiple groups of first voltages and the corresponding guide vane opening values to obtain a functional relation between the first voltages and the guide vane opening values according to the multiple groups of first voltages, and the functional relation is a third conversion relation. From this functional relationship, the vane opening value is determined given the first voltage.
The embodiment of the application also provides a monitoring device, which comprises a voltage acquisition module 20 and a control module 10, wherein the voltage acquisition module 20 is used for acquiring a first voltage of the angular displacement sensor 800 on the guide vane shaft in the test model. The control module 10 is configured to determine a vane opening value in the test model based on the first voltage.
It should be noted that, the control module 10 is used as a processing center for determining the opening value of the guide vane according to the pre-stored conversion program.
The present embodiments provide a computer readable storage medium having stored thereon a computer program that is loaded by a processor to perform the steps in the vane opening monitoring method of any of the above embodiments.
By way of example, the computer-readable storage media described above can include, but are not limited to: magnetic storage devices (e.g., hard Disk, floppy Disk or magnetic strips, etc.), optical disks (e.g., CD (Compact Disk), DVD (Digital Versatile Disk ), etc.), smart cards, and flash Memory devices (e.g., EPROM (Erasable Programmable Read-Only Memory), card, stick, key drive, etc.). Various computer-readable storage media described in embodiments of the present application may represent one or more devices and/or other machine-readable storage media for storing information. The term "machine-readable storage medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.
As shown in fig. 4-6, in some embodiments, the test pattern of the present invention includes, in some embodiments, a pattern cap 100, a plurality of crank arms 200, a plurality of vanes 400, a drive ring 500, and a drive assembly 60. The plurality of crank arms 200 are arranged at equal intervals along the circumferential direction of the model top cover 100, one end of each crank arm 200 is hinged with the model top cover 100, each crank arm 200 is fixedly connected with a guide vane shaft 300, the guide vane shafts 300 penetrate through the model top cover 100, and the guide vane shafts 300 are rotatably connected with the model top cover 100. Each guide vane 400 is fixedly connected with one guide vane shaft 300, and the guide vanes 400 are positioned on one side of the model top cover 100, which is away from the crank arm 200. The driving ring 500 is disposed around the model top cover 100, and the other end of the crank arm 200 is fixedly connected with the driving ring 500. The driving assembly 60 is used for driving the driving ring 500 to rotate around the center of the circle.
The number of crank arms 200, the number of vane shafts 300, and the number of vanes 400 are the same. The mold top 100 is a circular disk with the crank arms 200 equally spaced along the outer edge of the circular disk. The crank arm 200 is arranged on one side of the model top cover 100, and the guide vane 400 is arranged on one side, which is away from the model top cover 100 and away from the crank arm 200. The driving ring 500 is a circular ring, and since it is fixedly connected to one end of the crank arm 200, and the crank arm 200 is hinged to the model top cover 100, when the driving ring 500 rotates, the crank arm 200 rotates around the end hinged to the model top cover 100. Because the guide vane shaft 300 is fixedly connected with the crank arm 200 and is rotationally connected with the model top cover 100, the guide vane shaft 300 is driven to rotate when the crank arm 200 rotates, the guide vane shaft 300 drives the guide vanes 400 to rotate again, and the distance between the guide vanes 400 is adjusted, so that the opening of the guide vanes 400 is adjusted to be large.
The driving assembly 60 includes a driving rod 601 and a driving member 700, and one end of the driving rod 601 is connected to the driving ring 500. The driving member 700 is connected to the other end of the driving rod 601, and the driving member 700 is used for driving the driving rod 601 to move in the first direction so as to drive the driving ring 500 to rotate.
It should be noted that, one end of the driving rod 601 is connected to one side of the driving ring 500, and the movement of the driving rod 601 in the first direction is a linear movement, and since one end of the driving rod 601 is connected to the driving ring 500, the linear movement is converted into a rotational movement of the driving ring 500 along with the movement of the driving rod 601, so that the opening size of the guide vane 400 is adjusted.
The driving member 700 is one of telescopic mechanisms, and can drive the driving rod 601 to perform linear motion along a first direction. For example, the telescopic mechanism is a telescopic cylinder. Or, the telescopic mechanism comprises a motor, a gear and a rack, the gear is connected with a rotating shaft of the motor, the rack is meshed with the gear, the linear motion of the rack is realized through the rotation of the motor, the rack is connected with the driving rod 601, and the linear motion of the driving rod 601 is realized.
In some embodiments, the drive rod 601 is configured to reciprocate between a first position and a second position.
It should be noted that, the movement of the driving rod 601 between the first position and the second position in the first direction limits the movement path of the driving rod 601, and further limits the rotation angle of the driving ring 500, so that the driving ring 500 can rotate only within a fixed angle. Since the guide vane 400 rotates along with the guide vane shaft 300, the rotation angle of the guide vane 400 is limited, and the overlarge opening of the guide vane 400 caused by excessive rotation is avoided. And the opening of the guide vane 400 can be adjusted to the same set value a plurality of times through the reciprocating motion.
In some embodiments, the driving assembly 60 further includes a support 600, the driving rod 601 is slidably connected to the support 600, and a first limiting member 602 and a second limiting member 603 are disposed on the support 600 at intervals, where the first limiting member 602 and the second limiting member 603 are used to limit the driving rod 601 to move between the first position and the second position.
It will be appreciated that by providing the first and second stop members 602, 603 to block movement of the drive rod 601, the drive rod 601 cannot pass over the first and second positions.
Specifically, for example, a first stopper and a second stopper are respectively disposed near two ends of the driving rod 601, the first stopper is located on one side of the first stopper 602 near the second stopper 603, and the second stopper is located on one side of the second stopper 603 near the first stopper 602. The first stop block is used for abutting against the first limiting piece 602 when the driving rod 601 moves along the second position towards the first position, so that the driving rod 601 can only move to the first position; the second stopper is used for abutting against the second limiting piece 603 when the driving rod 601 moves along the direction of the first position towards the second position, so that the driving rod 601 can only move to the second position.
In some embodiments, the driving rod 601 is provided with a brake member 604, the brake member 604 is located between the first limiting member 602 and the second limiting member 603, when the brake member 604 moves to the first position, the brake member 604 abuts against the first limiting member 602, and the driving rod 601 moves to the second position, and the brake member 604 abuts against the second limiting member 603.
It will be appreciated that the first stop 602, the stop 604, and the second stop 603 are aligned in a first direction such that the first stop 602 and the second stop 603 can abut the stop 604 to stop movement of the drive rod 601.
In some embodiments, the first limiting member 602 is a first potentiometer, and a first contact is disposed on the first potentiometer; the second limiting piece 603 is a second potentiometer, and a second contact is arranged on the second potentiometer; the first potentiometer and the second potentiometer are each connected to the driving member 700, and the stopper 604 is configured to stop the driving member 700 from driving the driving lever 601 when contacting either one of the first contact and the second contact.
It will be appreciated that the first potentiometer and the second potentiometer are each connected to a control center (e.g., a computer) of the pump turbine simulator to feed information of the contact of the brake 604 to the first contact or the second contact back to the control center, thereby causing the control center to control the driving lever 601 to stop moving.
For example, the driving member 700 includes a motor, a gear and a rack, the gear is connected with a rotating shaft of the motor, the rack is meshed with the gear, the linear motion of the rack is realized through the rotation of the motor, and the rack is connected with the driving rod 601 to realize the linear motion of the driving rod 601. The motor is connected to the control center, and when the control center receives that the first contact or the second contact contacts the braking member 604, the control center controls the motor to stop rotating, thereby stopping the driving lever 601 at the first position or the second position.
In some embodiments, angular displacement sensors 800 are provided on at least two of the vane shafts 300 in the water pump turbine simulation apparatus.
It should be noted that the angular displacement sensor 800 is located on the side of the model top cover 100 facing away from the guide vane 400, wherein, in order to mount the angular displacement sensor 800, the guide vane shaft 300 for fixing the angular displacement sensor 800 is longer than the guide vane shafts 300 for fixing other angular displacement sensors 800.
The angular displacement sensor 800 may transmit some information parameters such as angular momentum, self-voltage, etc. to the control center in a wireless or wired manner.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A method of monitoring a vane opening, comprising:
acquiring a first voltage of an angular displacement sensor on a guide vane shaft in a test model;
determining a guide vane opening value in a test model according to the first voltage;
obtaining an average guide vane opening value and a guide vane opening value maximum error according to a plurality of initial guide vane opening values during assembly of a test model, and determining a guide vane safety compensation error according to the average guide vane opening value and the guide vane opening value maximum error;
acquiring an angular displacement sensor test error according to the average guide vane opening value, the initial voltage of the angular displacement sensor and the calibration coefficient of the angular displacement sensor;
determining the guide vane opening value compensation value according to the angular displacement sensor test error and the guide vane safety compensation error;
and determining an actual guide vane opening value according to the guide vane opening value compensation value and the guide vane opening value.
2. The method of vane opening monitoring according to claim 1, wherein the determining vane opening values in the test model from the first voltage comprises:
determining a corresponding guide vane opening angle value according to the first voltage;
and determining the guide vane opening value according to the guide vane opening angle value.
3. The method of claim 2, wherein determining a vane opening angle value corresponding to the first voltage according to the first voltage comprises:
and determining a guide vane opening angle value corresponding to the first voltage according to a first conversion relation and the first voltage.
4. The method of vane opening monitoring as claimed in claim 3, further comprising:
before the first voltage of the angular displacement sensor on the guide vane shaft in the test model is obtained, the first conversion relation is determined according to a plurality of first voltages which are measured in advance and the guide vane opening angle value corresponding to each first voltage.
5. The method of vane opening monitoring as claimed in claim 3, further comprising:
before the first voltage of the angular displacement sensor on the guide vane shaft in the test model is obtained, a plurality of first voltages and the guide vane opening angle value corresponding to each first voltage are obtained through simulation or test;
and determining the first conversion relation according to the first voltages and the guide vane opening angle value corresponding to each first voltage.
6. The method of vane opening monitoring according to claim 2, wherein the determining the vane opening value from the vane opening angle value comprises:
and determining the guide vane opening value according to a second conversion relation and the guide vane opening angle value.
7. The method of vane opening monitoring as claimed in claim 6, further comprising:
before the first voltage of the angular displacement sensor on the guide vane shaft in the test model is obtained, obtaining a plurality of guide vane opening angle values and the guide vane opening value corresponding to each guide vane opening angle value based on simulation software;
and determining the second conversion relation by the guide vane opening angle values and the guide vane opening values corresponding to the guide vane opening angle values.
8. The method of vane opening monitoring according to claim 1, wherein the determining vane opening values in the test model from the first voltage comprises:
and determining the guide vane opening value corresponding to the first voltage according to a third conversion relation and the first voltage.
9. A monitoring device, comprising:
the voltage acquisition module is used for acquiring a first voltage of an angular displacement sensor on the guide vane shaft in the test model;
the control module is used for determining a guide vane opening value in the test model according to the first voltage;
the control module is also used for determining guide vane safety compensation errors according to a plurality of initial guide vane opening values during assembly of the test model;
the control module is also used for determining an angular displacement sensor test error according to the average guide vane opening value, the initial voltage of the angular displacement sensor and the calibration coefficient of the angular displacement sensor;
the control module is also used for determining the guide vane opening value compensation value according to the angular displacement sensor test error and the guide vane safety compensation error;
the control module is also used for determining an actual guide vane opening value according to the guide vane opening value compensation value and the guide vane opening value.
10. A computer readable storage medium having stored thereon a computer program, the computer program being loaded by a processor to perform the steps of the vane opening monitoring method according to any of claims 1-8.
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