CN109344522B - Method and system for calculating grinding quantity of stationary blade of axial flow compressor - Google Patents
Method and system for calculating grinding quantity of stationary blade of axial flow compressor Download PDFInfo
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Abstract
The invention discloses a method and a system for calculating the grinding quantity of a static blade of an axial flow compressor, wherein the method comprises the following steps: analyzing and determining a reference value and an allowable range value of a gap corresponding to the measurement point respectively; obtaining the reference grinding quantity of the static blade corresponding to each measuring point by respectively calculating the difference value between the reference value corresponding to each measuring point and the measured clearance value; comparing the numerical values of the reference grinding amounts of the static blades corresponding to the measuring points, and taking the minimum value of the allowable range of the measuring point corresponding to the maximum value of the reference grinding amounts of the static blades as a grinding reference clearance value; the grinding amount of the stator blade is determined by calculating a difference between the grinding reference clearance value and the clearance value at the measurement point corresponding to the grinding reference clearance value. The method provided by the invention reduces the number of times of calculating the clearance value between the inner wall of the casing and the static blade and repeatedly checking the grinding amount, thereby reducing the workload of calculating the grinding amount of the static blade and shortening the prenatal preparation time of the axial flow compressor.
Description
Technical Field
The invention belongs to the technical field of stator blade machining of an axial flow compressor, and particularly relates to a method and a system for calculating grinding quantity of a stator blade of the axial flow compressor.
Background
An axial compressor is a turbomachinery device that provides compressed gas, which uses the interaction of blades with the gas to increase the pressure and kinetic energy of the gas, and uses successive flow elements to slow down the gas flow, converting the kinetic energy into an increase in pressure. Is an important power device for large-scale air supply and gas compression of petroleum, chemical industry, metallurgy, environmental protection, pharmacy, ammonia production and the like. The operating stability and operating mode range of the axial flow compressor directly determine the productivity and product quality of the national and civil industries in these relations.
The stator blade of the axial flow compressor has the function of converting the kinetic energy of the gas into pressure energy and enabling the gas to enter the next stage according to a certain direction and speed. The gap value of the stator blade can influence the pressure and the efficiency of the axial flow compressor, so the accuracy of the gap value of the stator blade directly influences the quality of the axial flow compressor. Before the stator blade gap is matched, the grinding amount is calculated by a technician according to the measured gap value provided by an operator and the reference value and the allowable range provided by a designer. In general, a ten-stage clearance value of an axial flow compressor needs to repeatedly calculate and verify grinding amounts of each stage, so that large and complicated workload is caused, and great difficulty is brought to the completion of pre-production preparation on time.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a method and a system for calculating the grinding quantity of a static blade of an axial flow compressor.
The aim of the invention is realized by the following technical scheme:
in one aspect, the present invention provides a method for calculating a grinding amount of a stator blade for an axial flow compressor, including:
after setting at least three measuring points for the gap distribution between the inner wall of the casing and the stationary blade of the axial flow compressor, respectively analyzing and determining a reference value and an allowable range value of the gap corresponding to the measuring points;
respectively measuring gaps corresponding to the measuring points in real time, and respectively calculating differences between the reference values corresponding to the measuring points and the measured gap values to obtain reference grinding amounts of the static blades corresponding to the measuring points;
comparing the numerical values of the reference grinding amounts of the static blades corresponding to the measuring points, and taking the minimum value of the allowable range of the measuring point corresponding to the maximum value of the reference grinding amounts of the static blades as a grinding reference clearance value;
the grinding amount of the stator blade is determined by calculating a difference between the grinding reference clearance value and a clearance value at a measurement point corresponding to the grinding reference clearance value.
A computing system for vane grinding amount of an axial flow compressor, comprising:
the analysis module is used for respectively analyzing and determining a reference value and a permissible range value of a gap corresponding to at least three measuring points after setting the gap distribution between the inner wall of the casing and the stationary blade of the axial flow compressor;
the reference grinding amount determining module is used for respectively measuring gaps corresponding to the measuring points in real time, and obtaining the reference grinding amount of the static blade corresponding to each measuring point by respectively calculating the difference between the reference value corresponding to each measuring point and the measured gap value;
the grinding reference clearance value determining module is used for comparing the numerical values of the reference grinding quantities of the static blades corresponding to the measuring points, and taking the minimum allowable range value of the measuring points corresponding to the maximum value of the reference grinding quantities of the static blades as a grinding reference clearance value;
and the grinding amount determining module is used for determining the grinding amount of the stator blade by calculating the difference value between the grinding reference clearance value and the clearance value at the measuring point corresponding to the grinding reference clearance value.
According to the method and the system for calculating the grinding quantity of the static blade of the axial flow compressor, the grinding quantity of the static blade is determined by determining the reference value and the allowable range value of the gap corresponding to the set measuring point between the inner wall of the casing and the static blade and measuring the gap corresponding to the measuring point in real time, so that the number of times of calculating the gap value between the inner wall of the casing and the static blade and repeatedly checking the grinding quantity are reduced, the workload of calculating the grinding quantity of the static blade is further reduced, and the prenatal preparation time of the axial flow compressor is shortened.
Drawings
FIG. 1 is a flow chart of a method of calculating vane grinding amount for an axial compressor in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a flow chart of another method of calculating vane grinding amount for an axial compressor in accordance with an exemplary embodiment of the present invention;
FIG. 3 is a flowchart of yet another method of calculating vane grinding amount for an axial compressor in accordance with an exemplary embodiment of the present invention;
FIG. 4 is a flowchart of another method of calculating vane grinding amount for an axial compressor in accordance with an exemplary embodiment of the present invention;
FIG. 5 is a schematic block diagram of a computing system for vane grinding amount for an axial compressor in accordance with an exemplary embodiment of the present invention;
FIG. 6 is a schematic block diagram of another system for calculating vane grinding amount for an axial compressor according to an exemplary embodiment of the present invention;
FIG. 7 is a schematic block diagram of yet another computing system for vane grinding amount for an axial compressor in accordance with an exemplary embodiment of the present invention;
FIG. 8 is a schematic block diagram of another exemplary embodiment of a system for calculating vane grinding amount for an axial compressor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
As shown in fig. 1, a method for calculating a vane grinding amount for an axial compressor includes:
s100, after at least three measuring points are arranged on the gap distribution between the inner wall of the casing of the axial compressor and the static blades, the reference value and the allowable range value of the gap corresponding to the measuring points are respectively analyzed and determined.
For example, after setting a measurement point in each of four directions of the gap between the inner wall of the casing and the stator blade of the axial flow compressor, the measurement points may be as follows, but are not limited thereto:
| stationary blade | Upper part | Lower part(s) | Right side | Left side |
| Allowable range value (minimum) | 0.93 | 0.87 | 0.90 | 0.90 |
| Allowable range value (maximum) | 1.23 | 1.17 | 1.20 | 1.20 |
| DatumValue of | 1.03 | 0.97 | 1.00 | 1.00 |
The reference value of the gap is the optimal gap value of the gap corresponding to the measuring point, and the allowable range value is the gap value of the gap corresponding to the measuring point, which is in the range, and is qualified.
And S200, respectively measuring gaps corresponding to the measuring points in real time, and respectively calculating the difference value between the reference value corresponding to each measuring point and the measured gap value to obtain the reference grinding quantity of the stationary blade corresponding to each measuring point.
When the gaps corresponding to the measuring points are respectively measured in real time, the lead wires are used for respectively measuring the radius differences between the inner wall of the casing and the stationary blades corresponding to the measuring points, and the gap values corresponding to the measuring points are determined.
For example, the reference grinding amounts of the stator vanes corresponding to the respective measurement points may be obtained by measuring the gaps corresponding to the four measurement points in real time, respectively, as follows, but are not limited thereto:
| stationary blade | Upper part | Lower part(s) | Right side | Left side |
| Measuring gap | 0.45 | 0.42 | 0.4 | 0.43 |
| Allowable range (minimum) | 0.93 | 0.87 | 0.90 | 0.90 |
| Allowable range (maximum) | 1.23 | 1.17 | 1.20 | 1.20 |
| Reference value | 1.03 | 0.97 | 1.00 | 1.00 |
| Reference grinding quantity | 0.58 | 0.55 | 0.60 | 0.57 |
S300, comparing the numerical values of the reference grinding amounts of the static blades corresponding to the measuring points, and taking the minimum value of the allowable range of the measuring point corresponding to the maximum value of the reference grinding amounts of the static blades as a grinding reference clearance value.
For example, the maximum value of the reference grinding amount of the vane is 0.6, the minimum value of the allowable range of the measurement point corresponding to the reference grinding amount of 0.6 is 0.9, and 0.9 is used as the grinding reference clearance value, which may be, but is not limited to, as follows:
| stationary blade | Upper part | Lower part(s) | Right side | Left side |
| Measuring gap | 0.45 | 0.42 | 0.4 | 0.43 |
| Allowable range (minimum) | 0.93 | 0.87 | 0.90 | 0.90 |
| Allowable range (maximum) | 1.23 | 1.17 | 1.20 | 1.20 |
| Reference value | 1.03 | 0.97 | 1.00 | 1.00 |
| Reference grinding quantity | 0.58 | 0.55 | 0.60 | 0.57 |
| Grinding reference clearance value | 0.90 |
S400, determining the grinding quantity of the stator blade by calculating the difference value between the grinding reference clearance value and the clearance value at the measuring point corresponding to the grinding reference clearance value.
For example, the determination of the grinding amount of the vane may be as follows, but is not limited thereto:
| stationary blade | Upper part | Lower part(s) | Right side | Left side |
| Measuring gap | 0.45 | 0.42 | 0.4 | 0.43 |
| Allowable range (minimum) | 0.93 | 0.87 | 0.90 | 0.90 |
| Allowable range (maximum) | 1.23 | 1.17 | 1.20 | 1.20 |
| Reference value | 1.03 | 0.97 | 1.00 | 1.00 |
| Reference grinding quantity | 0.58 | 0.55 | 0.60 | 0.57 |
| Grinding reference clearance value | 0.90 | |||
| Grinding amount | 0.50 |
As a preferred embodiment, as shown in fig. 2, after determining the grinding amount of the vane, the method further includes:
s500, adding the clearance values measured at each measuring point with the grinding quantity to obtain calculated clearance values corresponding to each measuring point after grinding the stationary blade;
s600, comparing each calculated gap value with the maximum value and the minimum value of the allowable range corresponding to each corresponding measuring point;
and S700, if each calculated clearance value is between the maximum value and the minimum value of the allowable range corresponding to each corresponding measuring point, the calculated clearance value meets the allowable range of the clearance between the static blade and the inner wall of the casing, namely the grinding quantity meets the requirement on the actual grinding quantity of the static blade.
For example, the determination that the grinding amount of the vane meets the requirement for the actual grinding amount of the vane may be as follows, but is not limited thereto:
| stationary blade | Upper part | Lower part(s) | Right side | Left side |
| Measuring gap | 0.45 | 0.42 | 0.4 | 0.43 |
| Allowable range (minimum) | 0.93 | 0.87 | 0.90 | 0.90 |
| Allowable range (maximum) | 1.23 | 1.17 | 1.20 | 1.20 |
| Reference value | 1.03 | 0.97 | 1.00 | 1.00 |
| Reference grinding quantity | 0.58 | 0.55 | 0.60 | 0.57 |
| Grinding reference clearance value | 0.90 | |||
| Grinding amount | 0.50 | |||
| Calculating a gap value | 0.95 | 0.92 | 0.90 | 0.93 |
| Gap value determination | √ | √ | √ | √ |
Further, as shown in fig. 3, after comparing each calculated gap value with the maximum value and the minimum value of the allowable range corresponding to each corresponding measurement point, the method further includes:
s701, if each calculated clearance value is smaller than the minimum value of the allowable range at each corresponding measuring point, carrying out numerical value increase adjustment on the grinding reference clearance value;
s702, increasing the grinding quantity of the stationary blade through increasing the adjusted grinding reference clearance value by a numerical value, and further increasing the calculated clearance value;
s703, comparing the increased calculated gap values with maximum and minimum values of allowable ranges at corresponding measuring points, stopping performing numerical increase adjustment on the grinding reference gap values if the increased calculated gap values are between the maximum and minimum values of allowable ranges at corresponding measuring points, and continuing performing numerical increase adjustment on the grinding reference gap values until the increased calculated gap values are between the maximum and minimum values of allowable ranges at corresponding measuring points if the increased calculated gap values are not between the maximum and minimum values of allowable ranges at corresponding measuring points.
Wherein the grinding reference clearance value is numerically adjusted between a minimum value and a maximum value of an allowable range at a measurement point corresponding to a maximum value of the reference grinding amount.
Further, as shown in fig. 4, after comparing each calculated gap value with the maximum value and the minimum value of the allowable range at each corresponding measurement point, the method further includes:
s701a, if each calculated clearance value is larger than the maximum value of the allowable range at each corresponding measuring point, performing numerical reduction adjustment on the grinding reference clearance value;
s702b, reducing the grinding quantity of the static blade by reducing and adjusting the grinding reference clearance value through numerical value, so as to reduce the calculated clearance value;
s703b, comparing the reduced calculated gap values with the maximum value and the minimum value of the allowable range at the corresponding measuring points, stopping performing the numerical reduction adjustment on the grinding reference gap value if the reduced calculated gap values are between the maximum value and the minimum value of the allowable range at the corresponding measuring points, and continuing performing the numerical reduction adjustment on the grinding reference gap value until the calculated gap values are between the maximum value and the minimum value of the allowable range at the corresponding measuring points if the reduced calculated gap values are not between the maximum value and the minimum value of the allowable range at the corresponding measuring points.
As a specific implementation of the method of fig. 1 to 4, an embodiment of the present invention provides a computing system for a vane grinding amount of an axial flow compressor, as shown in fig. 5, the system includes: an analysis module 100, a reference grinding amount determination module 200, a grinding reference clearance value determination module 300, and a grinding amount determination module 400.
The analysis module 100 is configured to analyze and determine a reference value and an allowable range value of a gap corresponding to at least three measurement points after setting the gap distribution between the inner wall of the casing and the stator blade of the axial flow compressor;
the reference grinding amount determining module 200 is configured to measure gaps corresponding to the measurement points in real time, and obtain reference grinding amounts of stationary blades corresponding to the measurement points by respectively calculating differences between reference values corresponding to the measurement points and measured gap values;
the grinding reference clearance value determining module 300 is configured to compare the values of the reference grinding amounts of the static blades corresponding to the respective measurement points, and take the minimum value of the allowable range of the measurement point corresponding to the maximum value of the reference grinding amount of the static blade as the grinding reference clearance value;
the grinding amount determining module 400 is configured to determine the grinding amount of the vane by calculating a difference between the grinding reference clearance value and the clearance value at the measurement point corresponding to the grinding reference clearance value.
As shown in fig. 6, a computing system for vane grinding amount of an axial flow compressor further includes:
the calculated gap value determining module 500 is configured to add the gap values measured at the measurement points to the grinding amounts to obtain calculated gap values corresponding to the measurement points after grinding the stator blade;
the gap value comparison module 600 is configured to compare each calculated gap value with a maximum value and a minimum value of an allowable range corresponding to each corresponding measurement point;
the grinding amount detection module 700 is configured to, if each calculated gap value is between the maximum value and the minimum value of the allowable range corresponding to each measurement point, calculate the gap value to satisfy the allowable range of the gap between the stator blade and the inner wall of the casing, that is, the grinding amount meets the requirement for the actual grinding amount of the stator blade.
Further, the grinding amount detection module 700 includes:
if each calculated clearance value is smaller than the minimum value of the allowable range at each corresponding measuring point, carrying out numerical value increase adjustment on the grinding reference clearance value;
the grinding quantity of the stationary blade is increased through the grinding reference clearance value after the numerical value is increased and adjusted, so that the calculated clearance value is increased;
and comparing the increased calculated gap values with the maximum value and the minimum value of the allowable range at each corresponding measuring point, stopping performing numerical increase adjustment on the grinding reference gap value if the increased calculated gap values are between the maximum value and the minimum value of the allowable range at each corresponding measuring point, and continuing performing numerical increase adjustment on the grinding reference gap value until the increased calculated gap values are between the maximum value and the minimum value of the allowable range at each corresponding measuring point, if the increased calculated gap values are not between the maximum value and the minimum value of the allowable range at each corresponding measuring point.
Wherein the grinding reference clearance value is numerically adjusted between a minimum value and a maximum value of the allowable range at the measurement point corresponding to the maximum value of the reference grinding amount.
Further, the grinding amount detection module 700 further includes:
if each calculated clearance value is larger than the maximum value of the allowable range at each corresponding measuring point, carrying out numerical reduction adjustment on the grinding reference clearance value;
the grinding reference clearance value is adjusted through numerical reduction, so that the grinding quantity of the static blade is reduced, and the calculated clearance value is further reduced;
and comparing the reduced calculated gap values with the maximum value and the minimum value of the allowable range at each corresponding measuring point respectively, stopping performing numerical reduction adjustment on the grinding reference gap value if the reduced calculated gap values are between the maximum value and the minimum value of the allowable range at each corresponding measuring point, and continuing performing numerical reduction adjustment on the grinding reference gap value if the reduced calculated gap values are not between the maximum value and the minimum value of the allowable range at each corresponding measuring point until the calculated gap values are between the maximum value and the minimum value of the allowable range at each corresponding measuring point, and stopping performing numerical reduction adjustment on the grinding reference gap value.
As a preferred embodiment, the reference grinding amount determination module 200 includes: and the gap measurement module is used for respectively measuring the radius difference between the inner wall of the casing and the stationary blade corresponding to each measurement point through the lead wire and determining the gap value corresponding to each measurement point.
It should be noted that, other corresponding descriptions of each functional unit related to the calculating device for the grinding amount of the stator blade of the axial flow compressor provided in the embodiment of the present invention may refer to corresponding descriptions in fig. 1, 2, 3 and 4, and are not repeated here.
Based on the above methods shown in fig. 1, 2, 3 and 4, correspondingly, the embodiment of the invention further provides a storage device, on which a computer program is stored, and the program is executed by a processor to implement the above method for calculating the grinding amount of the stator blade of the axial flow compressor shown in fig. 1, 2, 3 and 4.
Based on the above embodiments of the method shown in fig. 1, 2, 3, and 4 and the virtual device shown in fig. 5, 6, 7, and 8, in order to achieve the above objects, an embodiment of the present invention further provides a computing system for a vane grinding amount of an axial flow compressor, where the physical device includes a storage device and a processor; a storage device for storing a computer program; a processor for executing a computer program to implement a method of calculating a vane grinding amount for an axial compressor as shown in fig. 1, 2, 3, and 4 described above.
By applying the technical scheme of the invention, the grinding quantity of the stator blade is determined by determining the reference value and the allowable range value of the gap corresponding to the set measurement point between the inner wall of the casing and the stator blade and measuring the gap corresponding to the measurement point in real time, so that the number of times of calculating the gap value between the inner wall of the casing and the stator blade and repeatedly checking the grinding quantity are reduced, the workload of calculating the grinding quantity of the stator blade is further reduced, and the prenatal preparation time of the axial flow compressor is shortened.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (8)
1. A method of calculating a vane grinding amount for an axial flow compressor, comprising:
after setting at least three measuring points for the gap distribution between the inner wall of the casing and the stationary blade of the axial flow compressor, respectively analyzing and determining a reference value and an allowable range value of the gap corresponding to the measuring points;
respectively measuring gaps corresponding to the measuring points in real time, and respectively calculating differences between the reference values corresponding to the measuring points and the measured gap values to obtain reference grinding amounts of the static blades corresponding to the measuring points;
comparing the numerical values of the reference grinding amounts of the static blades corresponding to the measuring points, and taking the minimum value of the allowable range of the measuring point corresponding to the maximum value of the reference grinding amounts of the static blades as a grinding reference clearance value;
determining a grinding amount of the stationary blade by calculating a difference between the grinding reference clearance value and a clearance value at a measurement point corresponding to the grinding reference clearance value;
after determining the grinding amount of the stationary blade, further comprising:
adding the clearance value measured at each measuring point with the grinding quantity to obtain a calculated clearance value corresponding to each measuring point after grinding the stationary blade;
comparing each calculated gap value with the maximum value and the minimum value of the allowable range corresponding to each corresponding measuring point;
and if each calculated clearance value is respectively between the maximum value and the minimum value of the allowable range corresponding to each corresponding measuring point, the calculated clearance value meets the allowable range of the clearance between the stator blade and the inner wall of the casing, namely the grinding quantity meets the requirement on the actual grinding quantity of the stator blade.
2. The method for calculating a vane grinding amount for an axial flow compressor according to claim 1, further comprising, after comparing each calculated gap value with a maximum value and a minimum value of an allowable range corresponding to each of the measurement points corresponding thereto, respectively:
if each calculated clearance value is smaller than the minimum allowable range value at each corresponding measuring point, carrying out numerical value increase adjustment on the grinding reference clearance value;
the grinding reference clearance value is increased by increasing the numerical value after adjustment, so that the calculated clearance value is increased;
comparing the calculated gap values after the increase with the maximum value and the minimum value of the allowable range at each corresponding measuring point;
if the calculated gap value after the increase is between the maximum value and the minimum value of the allowable range at each corresponding measuring point, stopping performing numerical increase adjustment on the grinding reference gap value;
and if the increased calculated clearance values are not between the maximum value and the minimum value of the allowable range at the corresponding measuring points, continuing to perform numerical value increase adjustment on the grinding reference clearance value until the calculated clearance values are between the maximum value and the minimum value of the allowable range at the corresponding measuring points, and stopping performing numerical value increase adjustment on the grinding reference clearance value.
3. The method for calculating a vane grinding amount for an axial flow compressor according to claim 2, wherein the grinding reference clearance value is numerically adjusted between a minimum value and a maximum value of an allowable range at the measurement point corresponding to a maximum value of the reference grinding amount.
4. The method for calculating a vane grinding amount for an axial flow compressor according to claim 1, further comprising, after comparing each of the calculated gap values with a maximum value and a minimum value of an allowable range at each of the measurement points corresponding thereto, respectively:
if each calculated clearance value is larger than the maximum value of the allowable range at each corresponding measuring point, carrying out numerical reduction adjustment on the grinding reference clearance value;
the grinding reference clearance value is adjusted through numerical reduction, so that the grinding quantity of the static blade is reduced, and the calculated clearance value is further reduced;
comparing the calculated gap values after the reduction with maximum values and minimum values of allowable ranges at the corresponding measuring points;
if each calculated clearance value after reduction is between the maximum value and the minimum value of the allowable range at each corresponding measuring point, stopping the numerical reduction adjustment of the grinding reference clearance value
And if the reduced calculated clearance values are not between the maximum value and the minimum value of the allowable range at the corresponding measuring points, continuing to carry out numerical reduction adjustment on the grinding reference clearance value until the calculated clearance values are between the maximum value and the minimum value of the allowable range at the corresponding measuring points, and stopping carrying out numerical reduction adjustment on the grinding reference clearance value.
5. The method for calculating a grinding amount of a stator blade for an axial flow compressor according to claim 1, wherein when the clearances corresponding to the measurement points are measured in real time, respectively, the difference in radius between the inner wall of the casing and the stator blade corresponding to each of the measurement points is measured by a lead wire, respectively, and the clearance value corresponding to each of the measurement points is determined.
6. A computing system for vane grinding amount of an axial flow compressor, comprising:
the analysis module is used for respectively analyzing and determining a reference value and a permissible range value of a gap corresponding to at least three measuring points after setting the gap distribution between the inner wall of the casing and the stationary blade of the axial flow compressor;
the reference grinding amount determining module is used for respectively measuring gaps corresponding to the measuring points in real time, and obtaining the reference grinding amount of the static blade corresponding to each measuring point by respectively calculating the difference between the reference value corresponding to each measuring point and the measured gap value;
the grinding reference clearance value determining module is used for comparing the numerical values of the reference grinding quantities of the static blades corresponding to the measuring points, and taking the minimum allowable range value of the measuring points corresponding to the maximum value of the reference grinding quantities of the static blades as a grinding reference clearance value;
a grinding amount determining module for determining a grinding amount of the stationary blade by calculating a difference between the grinding reference clearance value and a clearance value at a measurement point corresponding to the grinding reference clearance value;
the calculated clearance value determining module is used for obtaining calculated clearance values corresponding to the measuring points after the static blades are ground after the clearance values measured at the measuring points are added with the grinding quantity;
the gap value comparison module is used for comparing each calculated gap value with the maximum value and the minimum value of the allowable range corresponding to each corresponding measuring point;
and the grinding quantity detection module is used for enabling the calculated clearance value to meet the allowable range of the clearance between the stator blade and the inner wall of the casing if the calculated clearance value is respectively between the allowable range maximum value and the allowable range minimum value corresponding to the corresponding measuring points, namely the grinding quantity meets the requirement on the actual grinding quantity of the stator blade.
7. A storage medium having stored thereon a computer program, wherein the program when executed by a processor implements the method for calculating the vane grinding amount for an axial flow compressor according to any one of claims 1 to 5.
8. A ternary impeller rough milling device comprising a storage medium, a processor and a computer program stored on the storage medium and executable on the processor, characterized in that the processor implements the method for calculating the grinding amount of a stator blade for an axial flow compressor according to any one of claims 1 to 5 when executing the program.
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