JP2003316852A - Man/machine interface for rotary machine design - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To establish a technique for enhancing the efficiency in the design and adjustment of a variously developed rotary machine, particularly, its bearing by guiding an analytic result only by an unskilled person continuously inputting a physical program for a necessary item every format in man-machine correspondence. <P>SOLUTION: This interface comprises an input screen 4-1 for displaying and inputting an initial condition value to a motor thermal hydrodynamic analytic computer, and output screens 4-1 to 4-4 for displaying physical event values calculated and outputted by the computer. The input screen 4-1 has a plurality of input areas 55 and 69 for initially inputting initial condition values. The output screens 4-1 to 4-4 have output areas 72, 84, 85, and 87 for outputting physical event values. On the basis of an output value, an input value is re- inputted in the same input area, and a design flow is executed only by the input and output on the screens. Accordingly, the unskilled person having no design knowledge can perform a design of the same level as a skilled person only by screen operation. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a man-machine interface for designing a rotary machine, and more particularly to a man-machine interface for designing a rotary machine that facilitates design while performing kinetic / thermohydrodynamic analysis.

[0002]

2. Description of the Prior Art Design is carried out on the basis of a high degree of analysis. The designer executes such an analysis and also executes the design based on empirical knowledge accumulated in the past.
Such design is performed by a skilled person. The analysis is a physical analysis such as a motion analysis, a stress (distribution) analysis, a pressure distribution analysis, a heat distribution analysis, and a bearing analysis is exemplified.

The bearing analysis is performed by a computer. The computer has a program capable of analyzing physical phenomena such as oil film pressure and heat generation distribution as bearing characteristics. The program is composed of a plurality of calculation programs such as an oil film pressure calculation program, a heat generation distribution calculation program, and a bearing deformation program. In order to operate such a program, various data are input to the variables and parameters of the program. Such input is performed corresponding to bearing types such as radial bearings and thrust bearings. The plurality of physical analysis programs required for the design of rotating machines, such as bearing designs, are known to each independently.

Conventionally, a skilled designer operates independent calculation programs independently and inputs a calculated value of a calculation result calculated by one calculation program to a variable or parameter of another calculation program. , They were thoroughly familiar with both calculation programs, and were familiar with past proper cases and past improper cases, and were able to understand the cases and programs organically, and to perform a series of coupled analyses. It is necessary for the input person to be familiar with the program and to input a huge number of various design values (initial conditions) such as the number of rotations of the rotating shaft and the shaft diameter into the variable characters of the program completely without error. , It is very difficult and even impossible unless you are an expert who is familiar with the ideas of multiple analysis programs and mathematical formulas. Design based on complicated and advanced design knowledge
Frequent new designs of rotating machines that are diversifying like today and repairs of rotating machines that are deployed in large numbers on a global scale
It is becoming difficult for even a skilled person to deal with readjustment (example: readjustment of lubricating oil temperature).

The fact that an unskilled person can input analysis data by computer-led data input to required items in a plurality of physical programs in each format and in a coupled manner leads to various evolutions in the earth. There is a need to streamline the design and adjustment of rotating machines, especially their bearings, deployed on a scale. In particular, it is desirable to facilitate the coupled analysis with a chain program.

[0006]

The problem to be solved by the present invention is to analyze a plurality of physical programs by format and in a coupled manner by an unskilled person inputting data for necessary items by computer initiative. The purpose of the present invention is to provide a man-machine interface for rotating machine design, which can establish a technique for efficiently designing and adjusting a rotating machine that is diversified in various ways by leading the results.

[0007]

Means for solving the problem Means for solving the problem are expressed as follows. The technical matters appearing in the expression are accompanied by parentheses (), and numbers, symbols and the like are added. The numbers, symbols and the like are technical matters constituting at least one embodiment or a plurality of examples of the plurality of embodiments or a plurality of examples of the present invention, particularly, the embodiment or the example. It corresponds to the reference numbers, reference symbols, etc. attached to the technical matters expressed in the drawings corresponding to. Such reference numbers and reference symbols clarify correspondences and bridges between the technical matters described in the claims and the technical matters of the embodiments or examples. Such correspondence / bridge does not mean that the technical matters described in the claims are limited to the technical matters of the embodiment or the examples.

A man-machine interface for designing a rotary machine according to the present invention includes an input screen (4-1) for displaying and inputting initial condition values to a kinetic thermohydrodynamic analysis computer (2), It comprises an output screen (4-1, 2, 3, 4) for displaying the physical event value calculated and output by the kinetic thermohydrodynamic analysis computer (2). The input screen (4-1) has a plurality of input areas (55, 69) for initially inputting initial condition values. The output screens (4-1, 2, 3, 4) are output areas (72, 84, 85, 8) for outputting physical event values.
7). A condition screen (4-1, 3, 4) for displaying the limiting condition for the physical event value is further formed. One of the plurality of input areas (55) (6
6) or a plurality of input areas (72, 75) are re-entered with modified initial condition values which are modified based on the restriction conditions. In the output area (72, 84, 85, 87), the recalculation result physical event value recalculated by the kinetic thermohydrodynamic analysis computer (2) is output.

The output value is output to the output area based on the input of the input area, the input value is input to the same input area again based on the output value, and the design flow is executed only by the input / output on the screen. An unskilled person who has no design knowledge can design as much as an expert by only operating the screen.

A selection screen (4) for selecting the first analysis program and the second analysis program as the analysis program used by the kinetic thermohydrodynamic analysis computer (2).
-1 of 65) is further added. A rotating machine design is a collection of sub-designs such as bearing designs, rotor designs and other designs. There are a plurality of analysis programs for each of a plurality of designs, and the plurality of analysis programs are independent but linked as a coupled / chained analysis program.

Past data is used as a partial initial condition value which is a part of a plurality of initial condition values.
If you use the initial condition part of the past case as it is,
A new rotary machine can be designed quickly.

The analysis program is formed of a first analysis program and a second analysis program, and further formed of more analysis programs. If there are a plurality of chained analysis pregrams, the input areas include the first input area (55) for the first analysis program and the second input area (75) for the second analysis program. The output area is a first output area (72) that outputs a first physical event value corresponding to the first analysis program, and a second output that outputs a second physical event value corresponding to the second analysis program. And regions (84, 85). The condition screen displays a first condition screen (67 of 4-1) for displaying the first limiting condition corresponding to the first physical event value, and a second limiting condition corresponding to the second physical event value. 2nd condition screen (4
-3) and. In the first input area (69), a first modified initial condition value modified based on the first limiting condition is re-input, or in the first input area (69), based on the second limiting condition. The second modified initial condition value to be modified is input again. The third modified initial condition value modified based on the second limiting condition is re-entered in the second input area (75).

By combining such a one-step feedback design flow and a two-step feedback design flow, a design having a plurality of analysis programs can be smoothly executed.

First input area 64 and first output area (72)
Is particularly preferably a part of the same screen (4-1). The feedback design can be executed for the first analysis program on the same screen. The fact that the first condition screen is part of the same screen further facilitates feedback design.

A second input area (75) and a second output area (8)
It is particularly preferable that 5) is a part of the same screen. The feedback design can be executed for the second analysis program on the same screen. The fact that the first condition screen is part of the same screen further facilitates feedback design. It is rather preferable that the screen to which the first output area belongs is different from the screen to which the second output area belongs.

The pair of the initial condition and the physical event value is output to the database (FIG. 3) and saved as a case collection when the limiting condition is cleared, and the initial condition and the physical event value are stored in the database. Corresponds to the event value. The screen to which the condition screen belongs preferably displays a design flow diagram showing a feedback flow in order to clarify the time position of the current step in the design flow. In this case, when the limiting condition is not cleared, the feedback step of the feedback flow diagram is clearly displayed on the screen.

It is further preferable that a guidance screen for guiding the designer to the design is added. Design knowledge is displayed on the guidance screen. Design knowledge is a knowledge set {Explanation of calculation flow for analysis of kinetic thermohydrodynamics, physical quantity for feedback, academic literature, past case set, material set, keyword set}
One or a plurality of elements selected from the above, all elements correspond to the search ID, and the past knowledge of the skilled designer can be shared. It is possible to execute it while looking at the screen of the personal computer in front of a large number of data rooms and only performing input / output operations on the screen without having to go around many data rooms while having a highly skilled design. After the design is completed, manufacturing drawings are automatically created, and production can be started immediately after receiving an order.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Corresponding to the figures, a man-machine interface for designing a rotary machine according to an embodiment of the present invention is provided with a man-machine interface together with a program execution computer. The man-machine interface 1 is connected to a program execution computer 2 as shown in FIG. The man-machine interface 1 is an input device that inputs a plurality of physical analysis programs and analysis data to the program execution computer 2, and receives and displays analysis result data output from the program execution computer 2. It is a display device.

The man-machine interface 1 has an analysis program selection screen 3 for displaying a plurality of bearing analysis codes,
Analysis data input screen 4 and analysis result data display screen 5
It is formed from and. The bearing analysis program is representative of a plurality of analysis programs for rotating machines. The program name of "bearing analysis" is displayed on the first screen 6 of the analysis data input screen 4 in association with the program start.
A plurality of bearing types and a plurality of bearing analysis program codes 8-j are input and displayed on the first screen 6 or the second screen 7 which is a screen subsequent to the first screen 6. The designer
By moving the cursor to the click area corresponding to the display area in which the bearing analysis program code 8-j and the bearing type are displayed and clicking the area, the bearing corresponding to the bearing analysis program code 8-j The analysis program is input to the program execution computer 2 to start execution of the physical analysis selected for the bearing of the specified bearing type. The physical analysis program selected for the bearing of the specified bearing type is hereinafter simply referred to as the analysis code. The analysis code is a set of a single analysis program or a plurality of analysis programs that are coupled to each other.

On the second screen 7, a manual for teaching and guiding the designer how to input the selected analysis code is displayed. The designer who wants to see the instructions can see the second screen 7
By clicking the specific area of, the instruction can be displayed on the second screen 7 or a teaching screen different from the second screen 7. Input data example 9-j input in the past for the analysis code is displayed on the teaching screen. The input data example 9-j is a design value properly determined in the past with respect to bearing specifications such as bearing dimensions, materials, and rotation speeds of one specified analysis code.

After learning the input procedure, the designer shifts the screen to the third screen 11 which is the design value input screen. Third
The screen 11 has a data input field 12 corresponding to all input data required for a newly designed bearing. The designer puts the cursor on the provisional design value that is provisionally set in the data input field 12 of the third screen 11 and inputs the definite design value or the provisional design value from the keyboard.
The tentative design value is a design value that can be changed by the feedback design.

The design value is language-converted into the execution input data 13 for the program execution computer 2. The execution input data 13 is the same as the design value manually input by the designer, or a value processed corresponding to the design value. The processing can be performed internally by the program execution computer 2. The program execution computer 2 executes a calculation in the specified analysis code based on the execution input data 13. The analysis code is linked so that a plurality of known calculation execution programs operate in a coupled manner. The rotation speed of the rotating shaft and the clearance of the bearing have already been input as the execution input data 13. As a linked program, a pressure distribution calculation program that analyzes the fluid pressure distribution generated on the bearing sliding surface and a calorific value calculation program that calculates the amount of heat, based on the rotational speed of the rotating shaft, the bearing gap, and the lubricating oil used. And a stress calculation program (element analysis) for calculating the deformation of the rotating shaft and the bearing corresponding to the pressure distribution and the heat quantity. The important parameters are the clearance between the rotating and sliding surfaces, the type of lubricating oil passage, the cooling structure, the lubricating oil specification number (product number), the rated rotation speed, and the rotation shaft and bearing. Physical property values such as thermal conductivity are exemplified. The bearing length is a target design value obtained by feedback design.

The program execution computer 2 executes a mathematical program for executing element analysis for each mesh based on a plurality of differential / integral equations corresponding to the analysis code (example:
Fluid pressure distribution analysis, heat conduction analysis, stress analysis, vibration analysis)
have. The program execution computer 2 outputs the analysis result data 14 which is a calculation result as an output result. The analysis result data 14 is displayed on the analysis result data display screen 5
Is displayed in. The program execution computer 2 has a function of determining whether the analysis result data 14 is proper. The result is that the amount of heat generated is too large to be sufficiently cooled by the cooling structure, the temperature of the sliding surface exceeds the allowable value, and seizure on the surface of the sliding surface of the bearing or rotating shaft cannot be avoided. Inappropriateness is displayed on the analysis result data display screen 5.

The result item which the designer must know as such an output is taught by the click operation of the designer, and an output example manual 1 for explaining an output example 1
5 is displayed on the analysis result data display screen 5. The result item column 16 is displayed on the analysis result data display screen 5. The calculation result value is automatically displayed in the result item column 16, or the calculation result value is displayed in the result item column 16 by the designer's click of the item column, and further, the judgment of appropriateness / inappropriateness is displayed, Moreover, the existence of better legitimate values is taught.

The designer looks at the result displayed on the analysis result data display screen 5 and displays the input data example 9-j on the analysis data input screen 4 again to bring the result data closer to a proper value. Teach a method of re-inputting a plurality of input parameters. As the teaching, the guideline for changing the lubricating oil,
An example is a large / small direction pointer of the gap between the sliding surfaces and a large / small direction pointer of the flow velocity of the cooling medium. Such guidelines are output based on past design examples. The designer changes the value of a single parameter or a plurality of parameters based on the guideline.
The program execution computer 2 executes reanalysis based on the newly input execution input data 13.

The feedback of the design flow allows the designer to approach the most appropriate design. The designer, who does not know the contents of the analysis program or learns the analysis program according to the teachings, is independent of the existence of the established analysis program and has the same degree as or exceeds the level of the first-class skilled designer. Design can be done.

FIG. 2 preferably illustrates the feedback design flow. Each of the plurality of input data examples 9 includes an input data example 17 and an input data manual 18. The past input data example 17 regarding the identified and actually operating bearing is captured in the analysis data input screen 4. The input data manual 18 guides the parameters to be changed and the amount to be changed when the rotational speed between the bearing to be designed this time and the bearing of the past design is only increased by, for example, 10%. .

The input data instructions 18 guide the designer to increase the inner diameter dimension of the bearing by, for example, 1% and increase the flow rate of the lubricating fluid by, for example, 5%. The designer newly added a 1% increase in bearing inner diameter and a 5% increase in lubricating fluid flow to the third
Input from screen 11. The designer knows the analysis result data 14 calculated by the program execution computer 2 based on the new parameter value, and repeats the feedback design flow described above. Designers can instantly complete appropriate designs of rotating machines (e.g., diesel engines for generators) that evolve in various ways in response to various users' demands. If the number of combinations of parameter changes increases, a large number of personal computers will be used simultaneously to output a large number of design examples, and a feedback design flow will be repeated for each of a large number of design examples to achieve the maximum convergence. It enables proper design,
Man-machine feedback design is possible.

FIG. 3 exemplifies a database of a bearing analysis program. The database is a model name (example: sleeve bearing), a function description corresponding to each analysis code (example: mechanical description that is unique to sleeve bearings in thermoelastic fluid lubrication analysis mathematics), and input data of multiple parameter sets. It consists of a value (optimum bearing specification value established in the past) and a limiting condition. As the limiting conditions, the maximum bearing diameter and the bearing surface temperature are exemplified.

The program execution computer 2 can obtain the unknown number with the bearing diameter as a single unknown number. If the calculated result exceeds the maximum bearing diameter,
Inappropriate input data values are displayed on the analysis result data display screen 5. The past input data is accumulated as an accumulation of the input data template 19 which is one of various data combinations.

FIG. 4 illustrates an input data template 19 that supports data input. The input data template 19 includes a bearing type input field 21 for inputting a bearing type.
A pad number input field 22 for inputting the number of divisions of the sliding surface to be cooled (the number of pads in FIGS. 5 and 6), a horizontal eccentricity input field 23 for inputting the horizontal eccentricity of the bearing, and a lubrication And an oil supply temperature input field 24 for inputting the oil supply temperature. The input data template 19 has already been input with actual data on bearings designed and operating in the past. The data is absolutely prohibited from modification with respect to the template. When data is newly updated, it is necessary to add a new template ID.

Examples of the bearing include a plurality of bearing types such as a radial bearing and a thrust bearing. 5 to 7 exemplify the tilting pad type thrust bearing 25. As shown in FIG. 5, the bearing 25 has an outer diameter D and a bearing length L. A lubricating oil lubrication region 28 is formed between the bearing 25 and the rotary shaft-side flange 27 of the rotary shaft 26, which is a sliding surface perpendicular to the shaft. The rotary shaft side collar 27 that receives the thrust force F is pressed against the bearing 25 via the lubricating oil lubrication region 28. A part of the axis perpendicular to the rotary shaft side flange 27 forms a rotary shaft side sliding surface 29, and the bearing 25 forms a bearing side sliding surface 31.

The bearing-side sliding surface 31 forms a composite sliding surface, as shown in FIG. The bearing side sliding surface 31 is
It is formed in a region between two concentric circles whose center line is the center line P of the rotary shaft 26. The bearing-side sliding surface 31 has a surface 32 and a plurality of pads 33 arranged on the same circumference at equal angular intervals. The surface 32 has a lubricating fluid supply hole 34 for supplying a lubricating fluid. The lubricating fluid supply hole 34 extends in the axial direction and opens at the surface 32. The lubricating fluid supply holes 34 are arranged at equal angular intervals,
The lubricating fluid supply holes 34 and the pads 33 are arranged alternately. The lubricating fluid is supplied from the lubricating fluid supply hole 34 to each pad 3
3 is supplied to the bearing side sliding surface 31 and discharged.

FIG. 7 shows the axial positioning of the pad 33 by cutting along the plane including the axis P of rotation. The gap U between the lubricating oil lubrication region 28 and the facing surface of the rotary shaft side flange 27 is a fluid film thickness h indicating a width of the thickness of the lubricating fluid film formed.
have s. The oil film thickness corresponding to the fluid film thickness hs is related to the oil film pressure and is an important parameter in bearing design.

Input data, which is example input data 17, is an initial condition for describing the dynamics of a bearing. The program execution computer 2 calculates a physical event value based on the initial condition. Initial conditions include operating conditions such as rated speed, rotating shaft dimensions, bearing type, bearing material, bearing length,
The bearing dimensions are like the clearance U. Based on the initial conditions,
Relative motion between the rotating shaft and the bearing, heat generation based on the motion, periodic vibration between the rotating shaft and the bearing that bends due to the heat generation are calculated, and finally the sliding surfaces The oil film pressure of the oil film between is calculated. If the oil film pressure exceeds the allowable value, seizure will occur on the bearing surface. The seizure limit pressure at which seizure occurs is known empirically. When the calculated oil film pressure exceeds the limit pressure, the initial condition is changed in an instructional manner and reanalysis is executed. By changing the initial conditions variously, the oil film pressure (oil film surface pressure) as a calculated value changes corresponding to the initial conditions. When the variation value (drift) has a constant distribution (normal distribution as statistical significance), the set of initial conditions for indicating the center value is the optimum design value set (A1, A2, ...,
Finally obtained as An). : Within the oil film pressure allowable range: A1: Bearing length A2: Average temperature of lubricating oil Aj: Lubricating fluid flow rate (unit time) An: Gap U

Such unknowns are not limited to the oil film pressure, and the lubricant average temperature is selected. If the oil film pressure is one of the initial conditions, the feedback design flow is repeated and analyzed so that the calculated lubricating oil temperature is within the allowable lubricating oil temperature. : Within the allowable range of lubricating oil temperature: A1: Bearing length A2: Oil film pressure Aj: Lubricating fluid flow rate An: Gap U

FIG. 8 shows an embodiment of the refinement analysis of the feedback design flow. The analysis data input screen 4 is configured as a bearing initial condition input unit. The analysis data input screen 4 is displayed on the program execution computer 2
Is a data input device attached to, and a combination of a keyboard and a mouse is exemplified. The bearing operating condition, bearing type, bearing material, and bearing length are manually input from the analysis data input screen 4. The program execution computer 2 calculates the bearing surface pressure as the calculation result. When the bearing surface pressure exceeds the set allowable value, the designer is notified through the analysis result data display screen 5 of the man-machine interface 1. Upon receipt of the notification, the designer follows one of the bearing operating conditions, bearing type, bearing material, and bearing length according to the guidance.
One or more values are changed. When the bearing surface pressure, which is the calculated value, becomes a value smaller than the set allowable value by repeating the initial condition input and the analysis (step S1 in FIG. 9), the bearing surface pressure is adopted as the execution input data 13. The bearing surface pressure, which is the input data 13 for execution, is adopted as a parameter of the bearing characteristic analysis program selected on the bearing analysis program selection screen 3, and the program execution computer 2
Analyzes the bearing characteristics with the bearing characteristics analysis program (step S2 in FIG. 9).

In order to calculate the bearing surface pressure, lubricating fluid data, a bearing material list, and past results of the bearing surface pressure are displayed on the analysis data input screen 4 as calculation support data. Lubricating fluid data, bearing material list, and past results of bearing surface pressure are accumulated in an electronic file and displayed on the analysis data input screen 4 according to the designer's intention. When one bearing material is selected from the bearing material list, the physical property value of the bearing material is automatically input to the program execution computer 2. The program execution computer 2 as a bearing characteristic analysis calculator that executes step S2 automatically refers to the guide for selecting the bearing clearance CR and the lubricating fluid viscosity coefficient, and the designer needs to input it. There is no.

FIG. 10 shows the program execution computer 2.
2 shows a bearing characteristic analysis calculator 2-1 which is a part of FIG. The guide for selecting the bearing clearance CR and the lubricating fluid viscosity coefficient are automatically input from the electronic file 35 to the calculator portion 36.
The calculator portion 36 calculates the lubricant average temperature, the Sommerfeld number, the Reynolds number, and the power loss based on the manually input operating average fluid temperature and the execution input data fetched from the electronic file 35. Calculate and output them,
Further, the assumed average lubricant temperature is compared with the output value of the average lubricant temperature, and if the calculated average lubricant temperature exceeds the assumed average lubricant temperature, the designer changes the working average fluid temperature. Then, again, the program execution computer 2
To the calculator portion 36 of

FIG. 11 shows the bearing evaluation calculator 2-2. The appropriate lubricant average temperature calculation value 37 is input from the bearing characteristic analysis calculator 2-1 to the calculator portion 38 of the bearing evaluation calculator 2-2. The calculator portion 38 calculates the minimum fluid film thickness in the gap U and the drain rise temperature. The bearing evaluation calculator 2-2 compares the calculated minimum fluid film thickness with the evaluated value, and further compares the calculated drain rise temperature with the evaluated value to calculate the minimum fluid film thickness calculated with the drain rise. If the calculated temperature value is a non-conforming value, the process returns to the initial condition input step S0 of FIG. 9 to revise the initial condition. If both the minimum fluid film thickness calculated value and the drain rise temperature calculated value are compatible values, the bearing evaluation calculator 2-2 outputs the analysis result data 14 which is the bearing calculation result. The mismatch of the minimum fluid film thickness means
It is defined as being N times or more the surface roughness of the lubricated sliding surface (N is a setting constant). If the calculated value is a conforming value, the calculated value is stored in the database of FIG. 3 as a calculation result and used as a conforming model for future design. The set of compatible values obtained by such calculation is routinely obtained for an imaginary bearing, and the set of compatible parameter values {A
When j} is obtained in advance and an actual rotary machine is ordered, a set of compatible design values is immediately obtained.

In the man-machine interface 1 while the program execution computer 2 is operating, the execution area of the program of the analysis code corresponding to the calculation currently being performed is preferably displayed on the screen. In this case, the screen is divided into two, one screen displays the entire design flow and the currently operating part (color change), and the other screen displays the step (color) of the detailed flow of the calculation execution part. Replacement)
It is effective and educational for unskilled people.

FIG. 12 shows the detailed structure of the electronic file 35. The electronic file 35 constitutes the tribo data tables 39-1 to 39-n. The tribo data table 39 provides the designer with design knowledge necessary for design. Design knowledge is a corresponding set of physical quantities for calculating physical events such as seizure limit, specific gravity, friction amount, and thermal conductivity, and physical property values or characteristic values of fluids, rubbers, and other substances corresponding to the physical quantities. Relationship, {lubricating oil}
The correspondence of − {viscosity coefficient} is illustrated. One tribo table 39-j has an ID number 42, a material number 43,
A title 44, a file name 45, a file type (example: text) 46, and various keyword IDs 47
-1 to m. An example of the title is an academic paper name. The academic papers include the latest research reports on bearing materials. As a material indicated by the material number 43, a list of lubricating oils (example: world standard specifications) is illustrated. Examples of the keyword include physical quantity concepts such as seizure limit, viscosity coefficient, hardness, specific gravity, heat resistant temperature and elastic modulus, and acquisition routes such as manufacturer name. For one keyword, a keyword table 48-j corresponding to the ID and its name is attached to each keyword ID 47-j. The file name 44 is accompanied by a physical quantity set 51 belonging to the file and a past case collection 52. As a casebook, past nonconformance examples are important. If the elastic modulus appears by searching based on the ID of the keyword "rubber", it is possible to find an elastic modulus table that associates all kinds of rubbers with their elastic moduli based on the keyword ID of the elastic modulus.

The tribo data table 39-j is independent of each other, and based on the material number 43 which can be searched based on the reference number and the file name 44 in which the reference material is stored, the contents of the reference are instantly displayed. Further, based on the keyword ID corresponding to the academic term appearing in the document, more detailed design knowledge can be obtained. By assuming a material change (stainless steel change), the surface pressure can be recalculated while in front of the personal computer. By updating the current data to the latest data by adding / deleting new keywords and adding / deleting / re-editing the tribo data table, it is possible for an unskilled person to easily follow the rapid technological innovation in real time.

The keywords necessary for bearing design are summarized in a keyword list, and the keyword table can be easily reached by inputting the name of the keyword. If the keyword ID is known, the keyword can be obtained based on the ID. All files including keywords can be opened, and files corresponding to multiple chains of keyword IDs can be easily opened. As shown in FIG. 13, a plurality of designers who use a plurality of tribo data tables,
The bearing design material 54 can be shared based on the file name 44 registered in the central management server 53 to which the plurality of tribo data tables 39-s, t are connected.
With such sharing, the user side will not be affected by changes in bearing design data.

FIG. 14 shows the mobility of the tribo data table. All design materials are transported on CD-ROM
Transfer is possible. If the CD-ROM is transferred to a plant where a rotating machine such as a power plant exists and the CD-ROM is inserted into a personal computer there, the personal computer 5
5 can be immediately used as one tribo data table. If it is diagnosed that the average lubricating oil temperature measured in the field rises above the set temperature and seizure is likely to occur, an unskilled person should provide a file corresponding to the bearing in such a situation. It is possible to find out a method (example: adjustment of the flow rate of the lubricating fluid) for accurately preventing seizure by looking at the design data constructed by an expert by finding the head.

FIG. 15 illustrates a screen 4-1 which is a part of the analysis data input screen 4 of the man-machine interface 1 for the radial bearing. As the initial conditions input through the analysis data input screen 4-1, there are physical initial conditions and geometric initial conditions. Physical initial conditions include mechanical conditions such as bearing operating conditions and material mechanical properties such as bearing materials. The geometrical initial conditions include the bearing type and the bearing length.

The bearing operating condition input field is the rotation speed N input field 5.
5, bearing load (mass) W input field 56, shaft diameter O input field 5
7, specific mass γ input field 58, lubricating oil supply temperature T input field 5
9, axis inclination angle α input field 61, surface roughness s input field 62,
It is composed of a specific heat Cp input field 63 and other input fields (not shown). Initially, the input to these input fields is manual input. The lubricating fluid is selected in the lubricating fluid selection input field 64. The bearing type input column 65 displays the bearing types in ascending and descending order, and the bearing type can be selected by clicking the selection column 65.

The bearing material is selected from the list 66, and the allowable surface pressure Py and the maximum temperature limit Tmax are manually or automatically entered corresponding to the selected bearing material. It is input through 68. The list 66 is
Click this to move to the list screen. Further, the designer can obtain the design knowledge necessary for the design from the database and the tribo data table 39 of FIG. Bearing length L is the bearing length input box 6
9 and the shaft diameter ratio (= L / D) is input through the shaft diameter ratio input field 71. The surface pressure P is calculated by the following formula: P = W / L · D The surface pressure can be one of the initial conditions.

When the allowable surface pressure Py is smaller than the calculated surface pressure P, the bearing length is re-input (first feedback input). When the allowable surface pressure Py is larger than the calculated surface pressure P, the screen 4-1 shifts to the next screen 4-2 shown in FIG. The rotation speed (peripheral speed) V is input into the input field, and the rotation speed is automatically calculated from the already input D and N and automatically input. : V = πDN Furthermore, PV indicating the operating state is calculated. : PV = πDNP This PV is automatically input to the PV input field 73. Furthermore, the above-mentioned bearing gap U is input to the radial gap Cr (or the above-mentioned U) input field 74.

FIG. 17 is a part of the analysis data input screen 4, but a screen 4-3 which is a transition from the screen of FIG. 16 is displayed.
Is. On screen 4-3, the average lubrication temperature is the average lubrication temperature T
It is hypothetically entered in the 0 input field 75. The lubricating fluid viscosity is
The lubricating fluid viscosity μ is automatically entered in the input field 76 by calculation. The relationship between viscosity and temperature is known as displayed in the upper right of the screen. The Sommerfeld number and Reynolds number are calculated based on the physical properties such as the viscosity of the lubricating fluid, and the Sommerfeld number S input field 77 and Reynolds number R are calculated.
It is automatically input to each of the e input fields 78 by calculation. Based on these coefficients, it is determined whether the flow of the lubricating fluid is turbulent, and if the turbulent flow display area indicates that the flow is not turbulent, clicking the calculation execution click area 79 causes the program execution computer 2 to The eccentricity, dimensionless side loft, and friction coefficient of the rotating shaft or the bearing that bends due to cyclic surface pressure from the rotating shaft when the bearing characteristic analysis program starts operation The Qs input field 82 and the friction coefficient f input field 83 are respectively input and displayed.

Power loss H which is important to know the thermal behavior
Is calculated by the following equation based on the friction coefficient f, the load W, and the speed V. : H = fWV The power loss is automatically input to the power loss H input field 84 by calculation. Next, the temperature increase ΔT of the drain discharged as a part of the lubricating fluid corresponding to the power loss H is calculated by the following equation. : ΔT = H / γCpQs The temperature increase ΔT is automatically input to the temperature increase ΔT input field 85 by calculation.

Next, the operating average fluid temperature Tave is calculated by the following equation. : Tave = Ts + ΔT / 2 where Ts has already been input. The working average fluid temperature is
The working average fluid temperature Tave input field 86 is automatically input by calculation. It is determined whether the operating average fluid temperature Tave is in the range of X% (example: 20%) with respect to the assumed average lubricating temperature T0. If the operating average fluid temperature Tave is not within the range of X% with respect to the assumed average lubricating temperature T0 (corresponding to viscosity), the assumed average lubricating temperature is changed (second feedback input). If the operating average fluid temperature Tave is within the range of X% with respect to the assumed average lubricating temperature T0, the screen 4-
3 shifts to the next screen 4-4.

FIG. 18 is a part of the analysis data input screen 4, but a screen 4-4 which is a transition from the screen of FIG. 16 is displayed.
Is. Next, the minimum fluid film thickness hmin is calculated by the following equation. : Hmin: = Cr · (1-ε) The minimum fluid film thickness hmin is automatically entered in the minimum fluid film thickness hmin input field 87 by calculation. Next, it is determined whether the minimum fluid film thickness hmin is equal to or more than M times the input surface roughness s (example: 3). Minimum fluid film thickness h
If min is M times or more of the surface roughness s, the screen returns to screen 4-1 in FIG. 15 and the bearing length is changed (third feedback input). If the minimum fluid film thickness hmin is M times or less of the surface roughness s, and the drain rise temperature ΔT is Zdeg or more, the bearing length is further changed so that the minimum fluid film thickness hmin is Is less than M times the length s, and
If the drain rise temperature ΔT is lower than the specified Zdeg, the minimum fluid film thickness hmin and the drain rise temperature ΔT are finally output to the analysis result data display screen 5 and displayed as the calculation results. The screen 4-4 can also be used as the analysis result data display screen 5.

Mathematical basic knowledge of design (known): Sommerfeld number S = S (μ, N, P, Cr, D) Reynolds number Re = Re (γ, U, Cr, μ) Friction coefficient f = f (Cr, D, S)

Step summary: Step 1: Description of bearing operating conditions (input of initial conditions) Step 2: Selection of bearing type (input of initial conditions) Step 3: Selection of bearing material (input of initial conditions) Step 4: Bearing length Selection (including feedback step) Step 5: Surface pressure calculation (first program) Step 6: Comparison with bearing allowable surface pressure (feedback
Step activation) Step 7: PV calculation for operation Step 8: Selection of bearing clearance (setting of standard)

Step 9 (Bearing Characteristic Analysis: Second Program): Step 9-1: Hypothetical (Provisional) Setting of Lubricating Fluid Temperature Step 9-2: Calculation of Lubricating Fluid Temperature Step 9-3: S and Re Calculation step 9-4: turbulent flow determination step 9-5: calculation of ε, f and Qs step 9-6: calculation of power loss H step 9-7: calculation of drain temperature ΔT step 9-8: of Tave Calculation Step 9-9: Comparison of Assumed Fluid Temperature (Corresponding to Viscosity) and Calculated Value

Step 10 (Feedback Step): Step 10-1: Calculation of Minimum Fluid Film Thickness Step 10-2: Comparison of hhim Calculation and Surface Roughness (Activation of Feedback Step / Resetting Bearing Length) Step 10-3: Evaluation of ΔT (trigger feedback step / reset bearing length)

In the flow display areas 91 to 94 on the left side of the screens shown in FIGS. 15 to 18, the design flow shown in FIG. 19 is shown as a flow chart 95. A feedback design flow for re-selecting the bearing length is shown in the flow display area 91. In particular, when the feedback is executed according to the judgment / judgment, the judgment step (diamond-shaped international standard display) 96 is It is preferable to provide an optical display such as coating 97, blinking, or an alarm display that requires feedback such as an alarm sound. Especially, the step of changing the bearing length due to the improper surface pressure of the bearing sliding surface, or the step of changing the set temperature when the temperature is improper, and the bearing length due to the improper minimum fluid film thickness. Such an alarm is preferred in the change step (flow display area 94 of FIG. 18). It is important to raise awareness of the existence of the feedback step when the execution of the first physical analysis program is changed to the execution of the second physical analysis program.

[0059]

The man-machine interface for designing a rotary machine according to the present invention dramatically improves the design efficiency of diversifying rotary machines, especially bearings, based on the feedback design flow.

[Brief description of drawings]

FIG. 1 is a system block-combined operation flow chart showing an embodiment of a man-machine interface for designing a rotary machine according to the present invention.

FIG. 2 is a system block-combined operation flow chart showing a modified example of a part of the operation flow.

FIG. 3 is a diagram showing a database.

FIG. 4 is a table showing input data.

FIG. 5 is a cross-sectional view showing a bearing.

FIG. 6 is a side sectional view of FIG.

FIG. 7 is a cross-sectional view showing details of a part of FIG.

FIG. 8 is a system block / operation flow chart showing another embodiment of the man-machine interface for designing a rotary machine according to the present invention.

FIG. 9 is an operation flow diagram showing an embodiment of a man-machine interface for designing a rotary machine according to the present invention.

FIG. 10 is a system block-combined operation flowchart showing still another embodiment of the man-machine interface for designing a rotary machine according to the present invention.

FIG. 11 is a system block-combined operation flowchart showing still another embodiment of the man-machine interface for designing a rotary machine according to the present invention.

FIG. 12 is a table showing a tribo data table.

FIG. 13 is a system block diagram showing still another embodiment of the man-machine interface for designing a rotary machine according to the present invention.

FIG. 14 is a system block diagram showing still another embodiment of the man-machine interface for designing a rotary machine according to the present invention.

FIG. 15 is a front view showing an input / output screen.

FIG. 16 is a front view showing another input / output screen.

FIG. 17 is a front view showing still another input / output screen.

FIG. 18 is a front view showing still another input / output screen.

FIG. 19 is a front view showing still another input / output screen.

[Explanation of symbols] 2… Kinematic thermohydrodynamic analysis computer 4-1 ... Input screen (first condition screen) 4-1 ... Selection screen 4-1, 2, 3, 4 ... Output screen 4-1, 3, 4 ... Condition screen 4-3 ... Second condition screen 55 ... Input area (first input area) 64 ... First input area 69 ... Input area (first input area) 72 ... Output area (first output area) 75 ... Input area (second input area) 84 ... Output area (second output area) 85 ... Output area (second output area) 87 ... Output area

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideki Sawada             2-19-13 Takanawa, Minato-ku, Tokyo Co., Ltd.             Ryoyu System Technology F term (reference) 5B046 AA04 CA03 HA04 HA05 JA07                       JA09 KA05

Claims (17)

[Claims] 1. An input screen for displaying and inputting initial condition values to a kinetic thermohydrodynamic analysis computer, and a physical event value calculated and output by the kinetic thermohydrodynamic analysis computer. An output screen for displaying the input screen, the input screen has a plurality of input areas for initially inputting the initial condition value, the output screen for outputting the physical event value Further comprising a condition screen for displaying a limiting condition for the physical event value, wherein one or a plurality of input regions among the plurality of input regions are modified based on the limiting condition. The modified initial condition value is re-input, and the recalculation result physical event value recalculated by the kinetic thermohydrodynamic analysis computer is output to the output area. Over the nest. 2. A man-machine for designing a rotary machine according to claim 1, further comprising a selection screen for selecting a first analysis program and a second analysis program as an analysis program used by the kinetic thermohydrodynamic analysis computer. interface. 3. The man-machine interface for rotary machine design according to claim 1, wherein past data is used as a partial initial condition value which is a part of the plurality of initial condition values. 4. The analysis program comprises a first analysis program and a second analysis program, and the input area is a first input area for the first analysis program and a second input for the second analysis program. A first output area for outputting a first physical event value corresponding to the first analysis program, and a second physical event value corresponding to the second analysis program. A second output area for outputting, wherein the condition screen corresponds to the first condition screen for displaying the first limiting condition corresponding to the first physical event value, and the second physical event value. A second condition screen for displaying a second limiting condition, wherein a first modified initial condition value modified based on the first limiting condition is re-entered in the first input area. Man for the design of rotating machinery Shin interface. 5. The analysis program comprises a first analysis program and a second analysis program, and the input area is a first input area for the first analysis program and a second input for the second analysis program. A first output area for outputting a first physical event value corresponding to the first analysis program, and a second physical event value corresponding to the second analysis program. A second output area for outputting, wherein the condition screen corresponds to the first condition screen for displaying the first limiting condition corresponding to the first physical event value, and the second physical event value. A second condition screen for displaying a second limiting condition, wherein a second modified initial condition value modified based on the second limiting condition is re-entered in the first input area. Man for the design of rotating machinery Shin interface. 6. The analysis program comprises a first analysis program and a second analysis program, wherein the input area is a first input area for the first analysis program and a second input for the second analysis program. A first output area for outputting a first physical event value corresponding to the first analysis program, and a second physical event value corresponding to the second analysis program. A second output area for outputting, wherein the condition screen corresponds to the first condition screen for displaying the first limiting condition corresponding to the first physical event value, and the second physical event value. A second condition screen for displaying a second limiting condition, wherein a third modified initial condition value modified based on the second limiting condition is re-entered in the second input area. Man for the design of rotating machinery Shin interface. 7. The analysis program comprises a first analysis program and a second analysis program, and the input area is a first input area for the first analysis program and a second input for the second analysis program. A first output area for outputting a first physical event value corresponding to the first analysis program, and a second physical event value corresponding to the second analysis program. A second output area for outputting, wherein the condition screen corresponds to the first condition screen for displaying the first limiting condition corresponding to the first physical event value, and the second physical event value. A second condition screen for displaying a second limiting condition, wherein a first modified initial condition value modified based on the first limiting condition is re-entered in the first input area; In the input area, the second A second modified initial condition value modified based on the restriction condition is re-input, and a third modified initial condition value modified based on the second restriction condition is re-input to the second input area. A man-machine interface for designing rotating machinery according to item 1. 8. The first input area and the first output area are:
The man-machine interface for rotary machine design according to claim 7, which is a part of the same screen. 9. The man-machine interface for rotary machine design according to claim 8, wherein the first condition screen is a part of the same screen. 10. The man-machine interface for rotary machine design according to claim 7, wherein the second input area and the second output area are portions of the same screen. 11. The man-machine interface for rotary machine design according to claim 10, wherein the second condition screen is a part of the same screen. 12. The screen to which the first output area belongs is different from the screen to which the second output area belongs.
A man-machine interface for rotary machine design according to claim 1, selected from 1. 13. The set of the initial condition and the physical event value is output to a database and stored as a case collection when the limiting condition is cleared, and the initial condition is stored in the database. The man-machine interface for rotary machine design according to claim 1, wherein the physical event value and the physical event value correspond to each other. 14. The man-machine interface for rotary machine design according to claim 1, wherein a design flow chart showing a feedback flow is displayed on the screen to which the condition screen belongs. 15. The man-machine interface for rotary machine design according to claim 14, wherein the feedback step of the feedback flow diagram is clearly displayed on the screen when the limiting condition is not cleared. 16. A guidance screen for guiding a designer to design, further comprising design knowledge on the guidance screen.
A man-machine interface for rotary machine design according to claim 1, selected from 17. The design knowledge is selected from a knowledge set {explanation of calculation flow of analysis of kinetic thermohydrodynamics, physical quantity for feedback, academic literature, past case set, material set, keyword set} or The man-machine interface for rotary machine design according to claim 16, wherein the man-machine interface is a plurality of elements, and all the elements correspond to a search ID.