Water turbine guide paddle shaft sleeve abrasion evaluation method, system and equipment

Abstract

The invention belongs to the field of hydroelectric generation, and particularly relates to a water turbine guide blade shaft sleeve abrasion evaluation method, system and equipment, and the method comprises the steps: obtaining a guide blade opening degree interval and a blade opening degree interval according to the power interval of each characteristic water head, a water turbine operation characteristic curve and a combination curve; after a guide vane angle interval and a paddle angle interval are calculated, a guide vane tangential slippage distance and a paddle tangential slippage distance are obtained through calculation, and then guide vane water pressure and paddle water pressure are calculated according to the characteristic water head; according to the water pressure of the guide vane, the water pressure of the paddle, the pressure of the paddle shaft sleeve and the tangential slippage distance of the paddle, the abrasion loss of the guide vane shaft sleeve and the abrasion loss of the paddle shaft sleeve are calculated, and the abrasion loss of the guide vane shaft sleeve and the abrasion loss of the paddle shaft sleeve under different actions of the guide paddle are calculated; and obtaining the abrasion loss of the guide vane shaft sleeve and the abrasion loss of the paddle shaft sleeve under any action frequency under any water head. The abrasion degree of the guide paddle shaft sleeve of the water turbine can be accurately evaluated in real time, and the operation safety of equipment is improved.

Description

Technical Field

[0001] The invention belongs to the field of hydropower generation, and in particular relates to a method, system and equipment for evaluating wear of a turbine guide blade sleeve. Background Art

[0002] The construction of a new power system poses a severe test to the safety and stability of the power grid. New energy generation is intermittent, random, volatile, and anti-peak, making system balance and safety issues more prominent. As the conventional energy with the best regulation performance, the role played by hydropower in the new power system will undergo profound changes, gradually changing from "power generation as the main" to "regulation as the main, power generation as the auxiliary", and will undertake more peak regulation and frequency regulation tasks.

[0003] The frequent participation of hydropower units in grid regulation has brought severe tests to the flexibility and reliability of the water guide mechanism of the turbine. The turbine guide blade is one of the important components of the unit. By changing the opening of the guide blade, the water flow entering the turbine can be controlled, thereby achieving the purpose of regulating the active power of the unit. The sleeve, as a supporting component for the rotation of the guide blade, mainly limits the radial swing of the guide blade so that the guide blade can move smoothly. In the actual operation of the hydropower unit, due to the influence of unbalanced water pressure, unit vibration, uneven force and other factors, the guide blade sleeve has a certain amount of wear, especially for units that frequently participate in regulation, the sleeve wear is more serious, resulting in increased water leakage, eccentric wear and jamming, loose fasteners, and blade outflow and other serious equipment defects.

[0004] In the related art, the wear of the turbine guide blade sleeve is mainly treated by regular maintenance. The wear of the sleeve is estimated based on past experience, and then the machine is shut down for maintenance and replacement of the sleeve.

[0005] With regard to the above-mentioned related technologies, the working conditions of the turbine are constantly changing during actual use. If the shaft sleeve is replaced by estimating the wear degree of the shaft sleeve based on past experience, the machine may be shut down before the wear degree of the shaft sleeve reaches the replacement requirement, or the machine may be severely worn but not shut down for maintenance, which will affect the safe operation of the equipment. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a method, system and equipment for evaluating the wear of a turbine guide blade sleeve, which can accurately evaluate the wear of the turbine guide blade sleeve in real time and improve the safety of equipment operation.

[0007] A method for evaluating wear of a turbine guide blade sleeve, comprising:

[0008] The contact interaction mode between the guide blade and its sleeve is set on the turbine guide blade sleeve wear simulation analysis model, and the guide blade includes the guide vane and the blade;

[0009] Establishing a turbine guide blade sleeve wear model, wherein the turbine guide blade sleeve wear model includes a turbine guide blade sleeve wear model and a turbine blade sleeve wear model;

[0010] Preset the number of guide blade movements;

[0011] Between the maximum water head and the minimum water head of the turbine, several characteristic water heads are taken to obtain the normal operating power interval corresponding to each characteristic water head of the turbine guide blade under the preset guide blade action times, and according to the normal operating power interval and the turbine operation characteristic curve, the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head is obtained, and the guide vane opening difference is calculated according to the guide vane opening corresponding to the endpoint value of the normal operating power interval, and according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine association curve, the blade opening interval is obtained by interpolation method, and the blade opening difference is obtained through the blade opening interval;

[0012] According to the guide vane opening difference and the guide vane angle calculation formula, the guide vane angle corresponding to the guide vane opening is calculated;

[0013] The blade angle corresponding to the blade opening is calculated by using the blade opening difference and the blade angle calculation formula;

[0014] The guide vane tangential sliding distance and the blade tangential sliding distance are calculated according to the guide vane angle and the blade angle respectively;

[0015] The guide vane water pressure acting on the guide vane and the blade water pressure acting on the blade are calculated based on the characteristic water head;

[0016] According to the guide vane water pressure, the blade water pressure and the sleeve contact interaction mode, a guide vane sleeve pressure and a blade sleeve pressure are obtained;

[0017] Obtaining the amount of guide vane sleeve wear corresponding to the characteristic water head according to the guide vane sleeve pressure, the guide vane tangential slip distance and the turbine guide vane sleeve wear model, or / and obtaining the amount of blade sleeve wear corresponding to the characteristic water head according to the blade sleeve pressure, the blade tangential slip distance and the turbine blade sleeve wear model;

[0018] According to the blade sleeve wear amount corresponding to the characteristic water head, the guide vane sleeve wear amount, and the number of guide vane actions, a guide vane sleeve wear amount correlation matrix and a blade wear amount correlation matrix are established;

[0019] According to the characteristic water head, the number of guide vane movements, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix, the linear interpolation method is used to obtain the guide vane sleeve wear and the blade sleeve wear at any number of movements under any water head, and the guide vane sleeve wear and / or the blade sleeve wear are used as the evaluation results.

[0020] Optionally, obtaining the guide vane sleeve pressure and the blade sleeve pressure according to the guide vane water pressure, the blade water pressure and the sleeve contact interaction mode includes:

[0021] The contact interaction mode of the sleeves is tangential friction, the sleeves include a guide vane sleeve and a blade sleeve, wherein the guide vane sleeve includes an upper sleeve, a middle sleeve and a lower sleeve;

[0022] According to the tangential friction and pressure calculation formula, the contact pressure is obtained, wherein the contact pressure includes the guide vane sleeve pressure and the blade sleeve pressure, and the guide vane sleeve pressure includes the upper sleeve pressure, the middle sleeve pressure and the lower sleeve pressure;

[0023] When the guide vane sleeve is an upper sleeve, the pressure calculation formula is:

[0024]

[0025] When the guide vane sleeve is a middle sleeve, the pressure calculation formula is:

[0026]

[0027] When the guide vane sleeve is the lower sleeve, the pressure calculation formula is:

[0028] R a =P s a4-P p a6+R c a5;

[0029] Among them, P s is the water pressure acting on the guide vane, P p is the force transmitted from the connecting rod to the guide vane arm, a1, a2, a3, a4, a5 and a6 length coefficients, which are related to the size of the guide vane, y c ,y c2 and c3 is the disturbance of the guide vane, A1 and A2 are the ratios of the moments of inertia of the guide vane, and K is the disturbance coefficient of the guide vane;

[0030] When it is a blade sleeve, the pressure calculation formula is:

[0031]

[0032] Among them, P kis the water pressure acting on the blade, l p is the length of the sleeve, z is the number of blade pins, d3 is the distance between the center of the blade pin and the center of the runner, d4 is the diameter of the blade pin, and L4 is the minimum length of the pressure surface.

[0033] Optionally, establishing a turbine guide blade sleeve wear model includes:

[0034] Obtaining the tangential sliding distance of the guide blade relative to the shaft sleeve;

[0035] Obtaining the contact pressure of the guide blade relative to the shaft sleeve;

[0036] Establishing a turbine guide blade sleeve wear model according to the tangential slip distance, the contact pressure and the sleeve wear formula;

[0037] The sleeve wear formula is:

[0038]

[0039] Among them, V is the wear volume, P is the normal pressure between the component and the material contact surface, L is the tangential slip distance between the components, H is the mold hardness, and K is the wear factor.

[0040] Optionally, between the maximum water head and the minimum water head of the turbine, several characteristic water heads are taken to obtain the normal operating power interval corresponding to each characteristic water head of the turbine guide blade when the turbine guide blade moves the preset number of guide blade movements, and the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head is obtained according to the normal operating power interval and the turbine operation characteristic curve, and the guide vane opening difference is calculated according to the guide vane opening corresponding to the endpoint value of the normal operating power interval, and the blade opening interval is obtained by interpolation method according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine association curve, and the blade opening difference is obtained through the blade opening interval, including:

[0041] According to the normal operating power interval corresponding to each characteristic water head, two endpoint values ​​of the normal operating power interval are obtained as a first endpoint value and a second endpoint value, wherein the first endpoint value is smaller than the second endpoint value;

[0042] Matching the first endpoint value and the second endpoint value to a turbine operation characteristic curve, and obtaining a first guide vane opening corresponding to the first endpoint value and a second guide vane opening corresponding to the second endpoint value;

[0043] Calculating a difference between the second guide vane opening and the first guide vane opening to obtain an opening difference;

[0044] According to the second guide vane opening, the first guide vane opening and the turbine coordination curve, the first blade opening and the second blade opening are obtained by interpolation method. The first blade opening and the second blade opening constitute the blade opening interval. The first blade opening and the second blade serve as endpoint values ​​of the blade opening interval.

[0045] Optionally, the use of linear interpolation method to obtain the guide vane sleeve wear amount and the blade sleeve wear amount at any water head and any number of actions according to the characteristic water head, the number of guide vane actions, the guide vane sleeve wear amount correlation matrix and the blade wear amount correlation matrix includes:

[0046] Obtain the characteristic water head interval where any water head is located and the guide blade action number interval where any action number is located;

[0047] According to the characteristic water head interval and the guide blade action number interval, an end point wear value is obtained;

[0048] According to the endpoint wear value and the interpolation formula of the linear interpolation method, the guide vane sleeve wear amount and the blade sleeve wear amount under any water head and any number of actions are obtained.

[0049] Optionally, the interpolation formula is:

[0050]

[0051] Among them, h j,ga is the amount of guide vane sleeve wear or blade sleeve wear under any water head and any number of operations, h j,k-1 and h j,k is the wear amount corresponding to different action times, H k and H k-1 Different water heads, H ga is the current water head, h j-1,ga is the calculated guide vane sleeve wear or blade sleeve wear, K is the characteristic head number, and j is the number of operations.

[0052] A turbine guide blade bushing wear assessment system, comprising:

[0053] A setting module is used to set the contact interaction mode between the guide blade and its sleeve on the turbine guide blade sleeve wear simulation analysis model, wherein the guide blade includes a guide vane and a blade;

[0054] An establishment module is used to establish a turbine guide blade sleeve wear model, wherein the turbine guide blade sleeve wear model includes a turbine guide blade sleeve wear model and a turbine blade sleeve wear model;

[0055] A preset module is used to preset the number of guide blade movements;

[0056] The first calculation module is used to take a number of characteristic water heads between the maximum water head and the minimum water head of the turbine, obtain the normal operating power interval corresponding to each characteristic water head when the turbine guide blade moves the preset number of guide blade movements, obtain the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head according to the normal operating power interval and the turbine operation characteristic curve, and calculate the guide vane opening difference according to the guide vane opening corresponding to the endpoint value of the normal operating power interval, and obtain the blade opening interval by interpolation according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine association curve, and obtain the blade opening difference through the blade opening interval;

[0057] A second calculation module is used to calculate the guide vane angle corresponding to the guide vane opening according to the guide vane opening difference and the guide vane angle calculation formula;

[0058] A third calculation module is used to calculate the blade angle corresponding to the blade opening according to the blade opening difference and the blade angle calculation formula;

[0059] a fourth calculation module, configured to calculate the guide vane tangential slip distance and the blade tangential slip distance according to the guide vane angle and the blade angle, respectively;

[0060] a fifth calculation module, configured to calculate the guide vane water pressure acting on the guide vane and the blade water pressure acting on the blade according to the characteristic water head;

[0061] a sixth calculation module, configured to obtain a guide vane sleeve pressure and a blade sleeve pressure according to the guide vane water pressure, the blade water pressure and a sleeve contact interaction mode;

[0062] a seventh calculation module, configured to obtain the guide vane sleeve wear amount corresponding to the characteristic water head according to the guide vane sleeve pressure, the guide vane tangential slip distance and the turbine guide vane sleeve wear model, or / and obtain the blade sleeve wear amount corresponding to the characteristic water head according to the blade sleeve pressure, the blade tangential slip distance and the turbine blade sleeve wear model;

[0063] A correlation module, for establishing a guide vane sleeve wear correlation matrix and a blade wear correlation matrix according to the blade sleeve wear corresponding to the characteristic water head, the guide vane sleeve wear, and the number of guide vane actions;

[0064] An evaluation module is used to obtain the guide vane sleeve wear and the blade sleeve wear at any water head and any number of movements based on the characteristic water head, the number of guide vane movements, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix by using a linear interpolation method, and take the guide vane sleeve wear and / or the blade sleeve wear as the evaluation result.

[0065] Optionally, the first calculation module includes:

[0066] A corresponding unit is used to obtain two endpoint values ​​of the normal operating power interval according to the normal operating power interval corresponding to each characteristic water head, as a first endpoint value and a second endpoint value, wherein the first endpoint value is smaller than the second endpoint value;

[0067] A matching unit, configured to match the first endpoint value and the second endpoint value to a turbine operation characteristic curve to obtain a first guide vane opening corresponding to the first endpoint value and a second guide vane opening corresponding to the second endpoint value;

[0068] a first calculation unit, configured to calculate a difference between the second guide vane opening and the first guide vane opening to obtain a guide vane opening difference;

[0069] The second calculation unit is used to obtain the first blade opening and the second blade opening by interpolation method according to the second guide vane opening, the first guide vane opening and the turbine coordination curve, the first blade opening and the second blade opening constituting the blade opening interval, and the first blade opening and the second blade serving as endpoint values ​​of the blade opening interval.

[0070] A terminal device comprises a memory and a processor. The memory stores a computer program that can be run on the processor. When the processor loads and executes the computer program, a method for evaluating the wear of a turbine guide blade sleeve is adopted.

[0071] A computer-readable storage medium stores a computer program. When the computer program is loaded and executed by a processor, a method for evaluating the wear of a turbine guide blade sleeve is adopted.

[0072] The beneficial effects of the present invention are:

[0073] 1. The present application obtains the normal power operation interval under different characteristic water heads, obtains the guide vane opening interval and the blade opening interval corresponding to the normal power operation interval, and then calculates the guide vane opening difference and the guide blade opening difference according to the guide vane opening interval and the blade opening interval, and then calculates the guide vane angle and the blade angle, and calculates the guide vane tangential slip distance and the blade tangential slip distance according to the guide vane angle and the blade angle, respectively, calculates the guide vane water pressure and the blade water pressure according to the characteristic water head, and then calculates the guide vane water pressure and the blade water pressure according to the guide vane water pressure and the blade water pressure. The blade-water pressure and the sleeve contact interaction mode are used to obtain the guide vane sleeve pressure and the blade sleeve pressure. The guide vane sleeve pressure, the guide vane tangential slip distance, the blade tangential slip distance and the blade sleeve pressure are input into the turbine guide vane sleeve wear model to obtain the blade sleeve wear and the guide vane sleeve wear. A guide vane sleeve wear correlation matrix and a blade wear correlation matrix related to the characteristic water head and the number of guide vane actions are established, so that the guide vane sleeve wear and the blade sleeve wear under any number of actions under any water head can be obtained according to the interpolation method. Compared with regular maintenance, the present application can accurately obtain the guide vane sleeve wear and the blade sleeve wear according to the number of actions and the water head, so as to avoid excessive wear of the sleeve under different working conditions, which may cause safety hazards to the equipment, or early replacement, which may increase the number of shutdowns.

[0074] 2. Since the present application can obtain the guide vane sleeve wear and the blade sleeve wear under any water head and any number of actions, it is possible to establish a correlation curve between the water head, the number of guide vane actions and the guide vane sleeve wear, or to establish a correlation curve between the water head, the number of blade actions and the blade sleeve wear. According to the actual operating conditions, the future wear of the sleeve can be inferred, and replacement can be arranged in advance to reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 A schematic flow chart of a method for evaluating wear of a turbine guide blade sleeve according to the present invention;

[0076] Figure 2 It is a structural schematic diagram of a water turbine guide vane simulation model of the present invention;

[0077] Figure 3 A structural schematic diagram of a hydraulic turbine guide vane simulation model from another perspective of the present invention;

[0078] Figure 4 It is a structural schematic diagram of the turbine blade simulation model of the present invention;

[0079] Figure 5 A schematic structural diagram of the hydraulic turbine blade simulation model of the present invention from another perspective;

[0080] Figure 6The guide blade synergy curve of the turbine under different water heads of the present invention;

[0081] Figure 7 It is a schematic diagram of the interpolation calculation process of the present invention.

[0082] Explanation of the reference numerals: 1. movable guide vane; 2. guide vane upper sleeve; 3. guide vane middle sleeve; 4. guide vane lower sleeve; 5. sleeve; 6. guide vane arm; 7. guide vane connecting rod; 8. control ring; 9. blade; 10. blade arm; 11. blade sleeve; 12. blade connecting rod. DETAILED DESCRIPTION

[0083] A method for evaluating the wear of turbine guide blade sleeves, such as Figure 1 As shown, including:

[0084] S1. The contact interaction mode between the guide blade and its sleeve is set on the turbine guide blade sleeve wear simulation analysis model, and the guide blade includes a guide vane and a blade.

[0085] Specifically, Figure 2 and Figure 3 As shown in FIG. 1 , the turbine guide vane simulation model includes a movable guide vane 1, a guide vane sleeve (a guide vane upper sleeve 2, a guide vane middle sleeve 3, and a guide vane lower sleeve 4), a sleeve 5, a guide vane arm 6, a guide vane connecting rod 7, and a control ring 8. Figure 4 and Figure 5 As shown, the blade simulation model of the rotary propeller unit includes a blade blade 9, a blade crank arm 10, a blade sleeve 11 and a blade connecting rod 12. For the assembly of the guide vane operating mechanism, the control ring 8 is first fixed, and then the control ring 8 and the guide vane crank arm 6 are connected and fixed according to the drawn guide vane connecting rod 7, and the relevant sleeve and sleeve 5 are fixed to the corresponding part of the guide vane. Finally, the movable guide vane 1 and the guide vane crank arm 6 are constrained to complete the assembly. For the assembly of the blade operating mechanism, the blade crank arm 10 is first fixed, and the blade crank arm 10 and the relay guide bearing are connected through the blade connecting rod 12 to control the drive, and then the relevant sleeve is fixed to the corresponding position, and finally the blade and the blade crank arm 10 are constrained to complete the assembly. In order to ensure the smooth progress of subsequent mesh division and other work, each component is reasonably simplified, such as ignoring details such as small pin holes. The blade simulation model and the guide vane simulation model constitute the wear simulation analysis model of the turbine guide vane sleeve 11.

[0086] The bushing is seeded globally, and then the mesh control attribute is set to global hexahedral mesh, and the unit attribute is enhanced hourglass control. Adaptive mesh technology is used to eliminate the worn material and maintain high-quality mesh based on the efficient simulation calculation method of extrapolation. The adaptive mesh redrawing area is set to all contacting internal nodes, and a certain redrawing frequency is set to ensure calculation accuracy.

[0087] S2. Establishing a turbine guide blade sleeve wear model, wherein the turbine guide blade sleeve wear model includes a turbine guide vane sleeve wear model and a turbine blade sleeve wear model.

[0088] Specifically, the turbine guide vane sleeve wear model is used to calculate the guide vane sleeve wear amount, and the turbine blade sleeve wear model is used to calculate the blade sleeve wear amount. Establishing the turbine guide vane sleeve wear model includes:

[0089] S20, obtaining a tangential sliding distance of the guide blade relative to the shaft sleeve.

[0090] Specifically, the tangential slip distance refers to the relative displacement or slip between two contact surfaces along the tangential direction (i.e., the direction parallel to the contact surface). The tangential slip distance is obtained by multiplying the guide vane angle by the guide vane radius or the blade angle by the blade radius.

[0091] S21. Obtain the contact pressure of the guide blade relative to the shaft sleeve.

[0092] Specifically, the contact pressure of the guide vane relative to the shaft sleeve is the contact pressure of the guide vane relative to the shaft sleeve or the contact pressure of the blade relative to the shaft sleeve, and the contact pressure can be calculated by the guide vane water pressure or the blade water pressure.

[0093] S22. Based on the tangential slip distance, contact pressure and sleeve wear formula, a turbine guide blade sleeve wear model is established.

[0094] The formula for sleeve wear is:

[0095]

[0096] Where V is the wear volume, P is the normal pressure at the contact surface between the component and the material, L is the tangential slip distance between the components, H is the mold hardness, K is the wear factor, the component is a guide vane or a blade, and dV, dP, and dL are derivatives.

[0097] The wear formulas of the turbine guide vane sleeve wear model and the turbine blade sleeve wear model are the same. The difference lies in the input contact pressure. The guide vane sleeve model inputs the contact pressure of the guide vane relative to the sleeve, while the blade sleeve wear model inputs the contact pressure of the blade relative to the sleeve.

[0098] S3. Preset the number of guide blade movements.

[0099] Specifically, during simulation, the number of guide blade movements can be set by the user to obtain the wear amount of the bushing under different guide blade movement numbers.

[0100] S4. Take several characteristic water heads between the maximum water head and the minimum water head of the turbine to obtain the normal operating power range corresponding to each characteristic water head when the turbine guide blade moves the preset number of guide blade movements; obtain the guide vane opening corresponding to the endpoint value of the normal operating power range under each characteristic water head according to the normal operating power range and the turbine operation characteristic curve; calculate the guide vane opening difference according to the guide vane opening corresponding to the endpoint value of the normal operating power range; and obtain the blade opening range by interpolation method according to the guide vane opening corresponding to the endpoint value of the normal operating power range and the turbine association curve; and obtain the blade opening difference through the blade opening range.

[0101] The method comprises: taking a plurality of characteristic water heads between the maximum water head and the minimum water head of the turbine to obtain a normal operating power interval corresponding to each characteristic water head of the turbine guide blade when the turbine guide blade moves the preset number of guide blade movements; obtaining the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head according to the normal operating power interval and the turbine operation characteristic curve; calculating the guide vane opening difference according to the guide vane opening corresponding to the endpoint value of the normal operating power interval; and obtaining the blade opening interval by interpolation according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine synergy curve; and obtaining the blade opening difference through the blade opening interval includes:

[0102] S40. According to the normal operating power interval corresponding to each characteristic water head, two endpoint values ​​of the normal operating power interval are obtained as a first endpoint value and a second endpoint value, and the first endpoint value is smaller than the second endpoint value.

[0103] Specifically, at the maximum water head H of the turbine max and minimum water head H min Select 5 characteristic heads, H1=H max , H5=H min , H1>H2>H3>H4>H, according to the field test of the vibration zone of the hydropower unit, the normal operating power range corresponding to the five characteristic water heads is obtained as [P 11 ,P 12 ]、[P 21 ,P 22 ]、[P 31 ,P 32 ]、[P 41 ,P 42 ]、[P 51 ,P 52 ], the first endpoint value is the minimum value of the normal operating power range, for example, P 11 and P 21 , the second endpoint value is the maximum value of the normal operating power range, for example, P 12 and P 22.

[0104] S41, matching the first endpoint value and the second endpoint value with the turbine operation characteristic curve to obtain a first guide vane opening corresponding to the first endpoint value and a second guide vane opening corresponding to the second endpoint value.

[0105] Specifically, the turbine operation characteristic curve is a curve that describes the turbine head, active power, guide vane opening and flow rate. The turbine head and turbine active power are obtained along different guide vane equal opening lines to ensure that the turbine head value points on each guide vane equal opening line are consistent, and the turbine active power matrix is ​​constructed.

[0106] S42, calculating the difference between the second guide vane opening and the first guide vane opening to obtain the guide vane opening difference;

[0107] S43. According to the second guide vane opening, the first guide vane opening and the turbine coordination curve, the first blade opening and the second blade opening are obtained by interpolation method. The first blade opening and the second blade opening constitute a blade opening interval. The first blade opening and the second blade opening serve as endpoint values ​​of the blade opening interval.

[0108] S44. Obtain a blade opening difference according to the endpoint values ​​of the blade opening interval.

[0109] Specifically, suppose there are n guide vane equal opening lines on the turbine operating characteristic curve, and the guide vane opening on each guide vane equal opening line is {Y1, Y2, …, Y n}, obtain m turbine heads H, and get {H1,H2,…,H m}, then the constructed turbine active power P parameter matrix can be expressed as:

[0110]

[0111] According to the turbine head H and turbine active power P, the corresponding guide vane opening Y can be obtained by linear interpolation, so that [P 11 ,P 12 ]、[P 21 ,P 22 ]、[P 31 ,P 32 ]、[P 41 ,P 42 ]、[P 51 ,P 52 ] corresponds to the guide vane opening [Y 11 ,Y 12 ]、[Y 21 ,Y 22 ]、[Y 31 ,Y 32 ]、[Y 41 ,Y 42 ]、[Y51 ,Y 52 ].

[0112] For a propeller turbine, the turbine association curves corresponding to the guide vane opening Y and the blade opening Z under different water heads are shown in the attached figure. Figure 6 As shown, according to the turbine head H, guide vane opening [Y 11 ,Y 12 ]、[Y 21 ,Y 22 ]、[Y 31 ,Y 32 ]、[Y 41 ,Y 42 ]、[Y 51 ,Y 52 ]Interpolation to get the blade opening [Z 11 ,Z 12 ]、[Z 21 ,Z 22 ]、[Z 31 ,Z 32 ]、[Z 41 ,Z 42 ]、[Z 51 ,Z 52 ].

[0113] The turbine coupling curve describes the turbine power curve under different guide vane openings, blade openings and water heads.

[0114] Calculate the movement amplitude of the guide blade under 5 characteristic water heads ΔY1=Y 12 -Y 11 , ΔY2=Y 22 -Y 21 , ΔY3=Y 32 -Y 31 , ΔY4=Y 42 -Y 41 , ΔY5=Y 52 -Y 51 ; ΔZ1=Z 12 -Z 11 , ΔZ2=Z 22 -Z 21 , ΔZ3=Z 32 -Z 31 , ΔZ4=Z 42 -Z 41 , ΔZ5=Z 52 -Z 51。

[0115] S5. According to the guide vane opening difference and the guide vane angle calculation formula, the guide vane angle corresponding to the guide vane opening is calculated.

[0116] S6. Calculate the blade angle corresponding to the blade opening using the blade opening difference and the blade angle calculation formula.

[0117] Specifically, the guide vane angle calculation formula is:

[0118]

[0119] The blade angle calculation formula is:

[0120]

[0121] Among them, Y max is the maximum displacement of the guide vane servomotor, Y is the actual displacement of the guide vane servomotor, α max is the maximum angle corresponding to the guide vane opening, Z max is the maximum displacement of the blade relay, Z is the actual displacement of the blade relay, β max is the maximum angle corresponding to the blade opening.

[0122] When calculating, use ΔY instead of Y and ΔZ instead of Z to calculate the guide vane angle and blade angle.

[0123] S7. Calculate the guide vane tangential sliding distance and the blade tangential sliding distance according to the guide vane angle and the blade angle respectively.

[0124] Specifically, the guide vane tangential slip distance is equal to the guide vane radius multiplied by the guide vane angle, and the blade tangential slip distance is equal to the blade radius multiplied by the blade angle.

[0125] S8. The guide vane water pressure acting on the guide vane and the blade water pressure acting on the blade are calculated based on the characteristic water head.

[0126] Specifically, firstly, the water heads H1, H2, H3, H4 and H5 are substituted into the guide vane water pressure calculation formula and the blade water pressure calculation formula, and H is replaced to calculate the guide vane water pressure P acting on the guide vane. s and the blade water pressure P acting on the blade k .

[0127] The guide vane water pressure calculation formula is:

[0128]

[0129] Where D0 is the guide vane distribution circle diameter, b0 is the guide vane height, and Z0 is the number of guide vanes.

[0130] The calculation formula of blade water pressure is:

[0131]

[0132] Where K is the turbine water thrust coefficient, D1 is the turbine runner diameter

[0133] S9. According to the guide vane water pressure, the blade water pressure and the sleeve contact interaction mode, the guide vane sleeve pressure and the blade sleeve pressure are obtained.

[0134] According to the interaction mode between the guide vane water pressure, the blade water pressure and the sleeve contact, the guide vane sleeve pressure and the blade sleeve pressure are obtained, including:

[0135] S90. The contact interaction mode of the sleeve is tangential friction. The sleeve includes a guide vane sleeve and a blade sleeve, wherein the guide vane sleeve includes an upper sleeve, a middle sleeve and a lower sleeve.

[0136] Specifically, the two surfaces of the shaft and the sleeve are set to be in contact, the inner part of the sleeve where wear occurs is the primary surface, the movable shaft where no wear occurs is the secondary surface, and the contact attribute is set to tangential friction.

[0137] S91. According to the tangential friction and pressure calculation formula, the contact pressure is obtained, where the contact pressure includes the guide vane sleeve pressure and the blade sleeve pressure, and the guide vane sleeve pressure includes the upper sleeve pressure, the middle sleeve pressure and the lower sleeve pressure;

[0138] When the guide vane sleeve is the upper sleeve, the pressure calculation formula is:

[0139]

[0140] When the guide vane sleeve is a center sleeve, the pressure calculation formula is:

[0141]

[0142] When the guide vane sleeve is the lower sleeve, the pressure calculation formula is:

[0143] R a =P s a4-P p a6+R c a5;

[0144] Among them, P s is the water pressure acting on the guide vane, P p is the force transmitted to the guide vane arm, a1, a2, a3, a4, a5, a6 and a7 are length coefficients related to the size of the guide vane, and y c ,y c2 and c3 is the disturbance of the guide vane, A1 and A2 are the ratio of the inertia moments of the guide vanes, K is the disturbance coefficient of the guide vane, y c P s , P p and R c The total disturbance caused by the sleeve on the guide vane, y c2 P pThe disturbance caused by the sleeve on the guide vane, y c3 is the disturbance caused by Rc on the guide vane upper sleeve, A1 is the ratio of the moment of inertia of the guide vane centroid axis to the moment of inertia of the journal at the lower sleeve, and A2 is the ratio of the moment of inertia of the guide vane centroid axis to the moment of inertia of the journal at the middle sleeve.

[0145] The length coefficient relationship is as follows:

[0146]

[0147] a3=a1+a2

[0148]

[0149] Among them, L is the distance from the lower sleeve of the guide vane to the middle sleeve, l1 is the distance from the lower sleeve to the bottom of the guide vane blade, l2 is the length of the guide vane flow-through component, l3 is the distance from the middle sleeve of the guide vane to the top of the guide vane blade, l4 is the distance from the upper sleeve of the guide vane to the middle sleeve, and l5 is the distance from the middle sleeve of the guide vane to the bottom of the guide vane shaft.

[0150] When it is a blade sleeve, the pressure calculation formula is:

[0151]

[0152] Among them, P k is the water pressure acting on the blade, l p is the length of the sleeve, z is the number of blade pins, d3 is the distance between the center of the blade pin and the center of the runner, d4 is the diameter of the blade pin, and L4 is the minimum length of the pressure surface.

[0153] The blade pin is mainly used to fix and connect the moving blade to the rotating shaft or other components. The blade pin ensures that the blade can rotate effectively on the shaft and reduce wear through precise installation and design.

[0154] S10. Obtaining the guide vane sleeve wear amount corresponding to the characteristic water head according to the guide vane sleeve pressure, the guide vane tangential slip distance, and the turbine guide vane sleeve wear model, or / and obtaining the blade sleeve wear amount corresponding to the characteristic water head according to the blade sleeve pressure, the blade tangential slip distance, and the turbine blade sleeve wear model.

[0155] Specifically, P in the sleeve wear formula in the turbine guide vane sleeve wear model is the blade sleeve pressure or the guide vane sleeve pressure, and L is the guide vane tangential slip distance or the blade tangential slip distance. When calculating the guide vane sleeve wear, the guide vane tangential slip distance and the guide vane sleeve pressure are used, and when calculating the blade sleeve wear, the blade sleeve pressure and the blade tangential slip distance are used.

[0156] S11. Establish a guide vane sleeve wear correlation matrix and a blade wear correlation matrix according to the blade sleeve wear, guide vane sleeve wear, and the number of guide vane actions corresponding to the characteristic water head.

[0157] Specifically, through the simulation of sleeve wear under the action of turbine guide blades, the correlation matrix of H, the number of reciprocating actions N and the wear amount h under different water heads is obtained, as shown in the following formula:

[0158] {H1,H2,…,H5}

[0159] {n1,n2,…,nm}

[0160]

[0161] S12. According to the characteristic water head, the number of guide vane movements, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix, a linear interpolation method is used to obtain the guide vane sleeve wear and the blade sleeve wear at any number of movements under any water head, and the guide vane sleeve wear and / or the blade sleeve wear are used as the evaluation results.

[0162] According to the characteristic water head, the number of guide vane actions, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix, the linear interpolation method is used to obtain the guide vane sleeve wear and the blade sleeve wear under any water head and any number of actions, including:

[0163] S120, obtaining a characteristic water head interval where any water head is located and a guide blade action number interval where any action number is located.

[0164] Specifically, linear interpolation is used to calculate the arbitrary water head H ga and any number of actions n ga The wear amount h ga , first find the water head H ga The interval between H1 and H2, that is, H k-1 <H ga <H k ,(2≤k≤5) find the number of actions n ga In n1~n m The interval in which n j-1 <n ga <n j ,(2≤j≤m), where m is the maximum number of actions and K is the number of selected characteristic heads.

[0165] S121. Obtaining an endpoint wear value according to a characteristic water head interval and a guide blade action number interval.

[0166] Specifically, the endpoint wear value is the wear value corresponding to the endpoint of the characteristic water head and the endpoint wear value corresponding to the endpoint of the number of guide blade movements, such as Figure 7 shown.

[0167] S122. According to the endpoint wear value and the interpolation formula of the linear interpolation method, the guide vane sleeve wear amount and the blade sleeve wear amount under any water head and any number of actions are obtained.

[0168] Specifically, the interpolation formula is:

[0169]

[0170] Among them, h j,ga is the amount of guide vane sleeve wear or blade sleeve wear under any water head and any number of operations, h j,k-1 and h j,k is the wear amount corresponding to different action times, H k and H k-1 Different water heads, H ga is the current water head, h j-1,ga is the calculated guide vane sleeve wear or blade sleeve wear, K is the characteristic head number, and j is the number of operations.

[0171] At this time, the correlation between the guide vane sleeve wear amount and the blade sleeve wear amount under any water head and any number of operations can be known.

[0172] A turbine guide blade bushing wear assessment system, comprising:

[0173] A setting module is used to set the contact interaction mode between the guide blade and its sleeve on the turbine guide blade sleeve wear simulation analysis model, wherein the guide blade includes a guide vane and a blade;

[0174] An establishment module is used to establish a turbine guide blade sleeve wear model, wherein the turbine guide blade sleeve wear model includes a turbine guide blade sleeve wear model and a turbine blade sleeve wear model;

[0175] A preset module is used to preset the number of guide blade movements;

[0176] The first calculation module is used to take a number of characteristic water heads between the maximum water head and the minimum water head of the turbine, obtain the normal operating power interval corresponding to each characteristic water head when the turbine guide blade moves the preset number of guide blade movements, obtain the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head according to the normal operating power interval and the turbine operation characteristic curve, and calculate the guide vane opening difference according to the guide vane opening corresponding to the endpoint value of the normal operating power interval, and obtain the blade opening interval by interpolation according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine association curve, and obtain the blade opening difference through the blade opening interval;

[0177] A second calculation module is used to calculate the guide vane angle corresponding to the guide vane opening according to the guide vane opening difference and the guide vane angle calculation formula;

[0178] A third calculation module is used to calculate the blade angle corresponding to the blade opening according to the blade opening difference and the blade angle calculation formula;

[0179] a fourth calculation module, configured to calculate the guide vane tangential slip distance and the blade tangential slip distance according to the guide vane angle and the blade angle, respectively;

[0180] a fifth calculation module, configured to calculate the guide vane water pressure acting on the guide vane and the blade water pressure acting on the blade according to the characteristic water head;

[0181] a sixth calculation module, configured to obtain a guide vane sleeve pressure and a blade sleeve pressure according to the guide vane water pressure, the blade water pressure and a sleeve contact interaction mode;

[0182] a seventh calculation module, configured to obtain the guide vane sleeve wear amount corresponding to the characteristic water head according to the guide vane sleeve pressure, the guide vane tangential slip distance and the turbine guide vane sleeve wear model, or / and obtain the blade sleeve wear amount corresponding to the characteristic water head according to the blade sleeve pressure, the blade tangential slip distance and the turbine blade sleeve wear model;

[0183] A correlation module, for establishing a guide vane sleeve wear correlation matrix and a blade wear correlation matrix according to the blade sleeve wear corresponding to the characteristic water head, the guide vane sleeve wear, and the number of guide vane actions;

[0184] An evaluation module is used to obtain the guide vane sleeve wear and the blade sleeve wear at any water head and any number of movements based on the characteristic water head, the number of guide vane movements, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix by using a linear interpolation method, and take the guide vane sleeve wear and / or the blade sleeve wear as the evaluation result.

[0185] The first calculation module includes:

[0186] A corresponding unit is used to obtain two endpoint values ​​of the normal operating power interval according to the normal operating power interval corresponding to each characteristic water head, as a first endpoint value and a second endpoint value, wherein the first endpoint value is smaller than the second endpoint value;

[0187] A matching unit, configured to match the first endpoint value and the second endpoint value to a turbine operation characteristic curve to obtain a first guide vane opening corresponding to the first endpoint value and a second guide vane opening corresponding to the second endpoint value;

[0188] a first calculation unit, configured to calculate a difference between the second guide vane opening and the first guide vane opening to obtain a guide vane opening difference;

[0189] The second calculation unit is used to obtain the first blade opening and the second blade opening by interpolation method according to the second guide vane opening, the first guide vane opening and the turbine coordination curve, the first blade opening and the second blade opening constituting the blade opening interval, and the first blade opening and the second blade serving as endpoint values ​​of the blade opening interval.

[0190] An embodiment of the present application also discloses a terminal device, including a memory and a processor. The memory stores a computer program that can be run on the processor. When the processor loads and executes the computer program, a method for evaluating the wear of a turbine guide blade sleeve is adopted.

[0191] The terminal device may be a computer device such as a desktop computer, a laptop computer or a cloud server, and the terminal device includes but is not limited to a processor and a memory. For example, the terminal device may also include input and output devices, a network access device and a bus.

[0192] Among them, the processor can adopt a central processing unit (CPU). Of course, according to actual usage, other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. can also be adopted. The general-purpose processor can adopt a microprocessor or any conventional processor, etc., and this application does not impose any restrictions on this.

[0193] Among them, the memory can be an internal storage unit of the terminal device, such as a hard disk or memory of the terminal device, or it can be an external storage device of the terminal device, such as a plug-in hard disk, a smart memory card (SMC), a secure digital card (SD) or a flash memory card (FC) equipped on the terminal device, etc., and the memory can also be a combination of an internal storage unit and an external storage device of the terminal device. The memory is used to store computer programs and other programs and data required by the terminal device. The memory can also be used to temporarily store data that has been output or is to be output, and this application does not impose any restrictions on this.

[0194] Among them, through this terminal device, a turbine guide blade sleeve wear assessment method in the above embodiment is stored in the memory of the terminal device, and is loaded and executed on the processor of the terminal device for easy use.

[0195] An embodiment of the present application further discloses a computer-readable storage medium, and the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, a method for evaluating wear of a turbine guide blade sleeve in the above embodiment is adopted.

[0196] Among them, the computer program can be stored in a computer-readable medium, the computer program includes computer program code, the computer program code can be in the form of source code, object code, executable file or certain middleware, etc. The computer-readable medium includes any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the computer-readable medium includes but is not limited to the above-mentioned components.

[0197] Among them, through this computer-readable storage medium, a turbine guide blade sleeve wear assessment method in the above embodiment is stored in a computer-readable storage medium, and is loaded and executed on a processor to facilitate the storage and application of the above method.

[0198] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0199] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A method for evaluating the wear of a turbine guide blade sleeve, characterized in that: include: The contact interaction mode between the guide blade and its sleeve is set on the turbine guide blade sleeve wear simulation analysis model, and the guide blade includes the guide vane and the blade; Establishing a turbine guide blade sleeve wear model, wherein the turbine guide blade sleeve wear model includes a turbine guide blade sleeve wear model and a turbine blade sleeve wear model; Preset the number of guide blade movements; Between the maximum water head and the minimum water head of the turbine, several characteristic water heads are taken to obtain the normal operating power interval corresponding to each characteristic water head of the turbine guide blade under the preset guide blade action times, and according to the normal operating power interval and the turbine operation characteristic curve, the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head is obtained, and the guide vane opening difference is calculated according to the guide vane opening corresponding to the endpoint value of the normal operating power interval, and according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine association curve, the blade opening interval is obtained by interpolation method, and the blade opening difference is obtained through the blade opening interval; According to the guide vane opening difference and the guide vane angle calculation formula, the guide vane angle corresponding to the guide vane opening is calculated; The blade angle corresponding to the blade opening is calculated by using the blade opening difference and the blade angle calculation formula; The guide vane tangential sliding distance and the blade tangential sliding distance are calculated according to the guide vane angle and the blade angle respectively; The guide vane water pressure acting on the guide vane and the blade water pressure acting on the blade are calculated based on the characteristic water head; According to the guide vane water pressure, the blade water pressure and the sleeve contact interaction mode, a guide vane sleeve pressure and a blade sleeve pressure are obtained; Obtaining the amount of guide vane sleeve wear corresponding to the characteristic water head according to the guide vane sleeve pressure, the guide vane tangential slip distance and the turbine guide vane sleeve wear model, or / and obtaining the amount of blade sleeve wear corresponding to the characteristic water head according to the blade sleeve pressure, the blade tangential slip distance and the turbine blade sleeve wear model; According to the blade sleeve wear amount corresponding to the characteristic water head, the guide vane sleeve wear amount, and the number of guide vane actions, a guide vane sleeve wear amount correlation matrix and a blade wear amount correlation matrix are established; According to the characteristic water head, the number of guide vane movements, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix, the linear interpolation method is used to obtain the guide vane sleeve wear and the blade sleeve wear at any number of movements under any water head, and the guide vane sleeve wear and / or the blade sleeve wear are used as the evaluation results.

2. The method for evaluating the wear of a turbine guide blade sleeve according to claim 1, wherein: The obtaining of the guide vane sleeve pressure and the blade sleeve pressure according to the guide vane water pressure, the blade water pressure and the sleeve contact interaction mode comprises: The contact interaction mode of the sleeves is tangential friction, the sleeves include a guide vane sleeve and a blade sleeve, wherein the guide vane sleeve includes an upper sleeve, a middle sleeve and a lower sleeve; According to the tangential friction and pressure calculation formula, the contact pressure is obtained, wherein the contact pressure includes the guide vane sleeve pressure and the blade sleeve pressure, and the guide vane sleeve pressure includes the upper sleeve pressure, the middle sleeve pressure and the lower sleeve pressure; When the guide vane sleeve is an upper sleeve, the pressure calculation formula is: When the guide vane sleeve is a middle sleeve, the pressure calculation formula is: When the guide vane sleeve is the lower sleeve, the pressure calculation formula is: R a =P s a4-P p a6+R c a5; Among them, P s is the water pressure acting on the guide vane, P p is the force transmitted to the guide vane arm, a1, a2, a3, a4, a5, a6 and a7 are length coefficients related to the size of the guide vane, and y c ,y c2 and c3 is the disturbance of the guide vane, A1 and A2 are the ratios of the moments of inertia of the guide vane, and K is the disturbance coefficient of the guide vane; When it is a blade sleeve, the pressure calculation formula is: Among them, P k is the water pressure acting on the blade, l p is the length of the sleeve, z is the number of blade pins, d3 is the distance between the center of the blade pin and the center of the runner, d4 is the diameter of the blade pin, and L4 is the minimum length of the pressure surface.

3. The method for evaluating the wear of a turbine guide blade sleeve according to claim 1, wherein: The establishment of the turbine guide blade sleeve wear model comprises: Obtaining the tangential sliding distance of the guide blade relative to the shaft sleeve; Obtaining the contact pressure of the guide blade relative to the shaft sleeve; Establishing a turbine guide blade sleeve wear model according to the tangential slip distance, the contact pressure and the sleeve wear formula; The sleeve wear formula is: Among them, V is the wear volume, P is the normal pressure between the component and the material contact surface, L is the tangential slip distance between the components, H is the mold hardness, and K is the wear factor.

4. The method for evaluating the wear of a turbine guide blade sleeve according to claim 1, wherein: The method comprises: taking a plurality of characteristic water heads between the maximum water head and the minimum water head of the turbine to obtain a normal operating power interval corresponding to each characteristic water head of the turbine guide blade when the turbine guide blade moves the preset number of guide blade movements; obtaining the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head according to the normal operating power interval and the turbine operation characteristic curve; calculating the guide vane opening difference according to the guide vane opening corresponding to the endpoint value of the normal operating power interval; and obtaining the blade opening interval by interpolation according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine synergy curve; and obtaining the blade opening difference through the blade opening interval includes: According to the normal operating power interval corresponding to each characteristic water head, two endpoint values ​​of the normal operating power interval are obtained as a first endpoint value and a second endpoint value, wherein the first endpoint value is smaller than the second endpoint value; Matching the first endpoint value and the second endpoint value to a turbine operation characteristic curve, and obtaining a first guide vane opening corresponding to the first endpoint value and a second guide vane opening corresponding to the second endpoint value; Calculating a difference between the second guide vane opening and the first guide vane opening to obtain a guide vane opening difference; According to the second guide vane opening, the first guide vane opening and the turbine synergy curve, the first blade opening and the second blade opening are obtained by interpolation method, the first blade opening and the second blade opening constitute the blade opening interval, and the first blade opening and the second blade opening serve as the endpoint values ​​of the blade opening interval; The blade opening difference is obtained according to the endpoint values ​​of the blade opening interval.

5. The method for evaluating the wear of a turbine guide blade sleeve according to claim 1, wherein: According to the characteristic water head, the number of guide vane actions, the guide vane sleeve wear amount correlation matrix and the blade wear amount correlation matrix, the guide vane sleeve wear amount and the blade sleeve wear amount under any water head and any number of actions are obtained by linear interpolation method, including: Obtain the characteristic water head interval where any water head is located and the guide blade action number interval where any action number is located; According to the characteristic water head interval and the guide blade action number interval, an end point wear value is obtained; According to the endpoint wear value and the interpolation formula of the linear interpolation method, the guide vane sleeve wear amount and the blade sleeve wear amount under any water head and any number of actions are obtained.

6. The method for evaluating the wear of a turbine guide blade sleeve according to claim 5, wherein: The interpolation formula is: Among them, h j,ga is the amount of guide vane sleeve wear or blade sleeve wear under any water head and any number of operations, h j,k-1 and h j,k is the wear amount corresponding to different action times, H k and H k-1 Different water heads, H ga is the current water head, h j-1,ga is the calculated guide vane sleeve wear or blade sleeve wear, K is the characteristic head number, and j is the number of operations.

7. A turbine guide blade sleeve wear assessment system, characterized in that: include: A setting module is used to set the contact interaction mode between the guide blade and its sleeve on the turbine guide blade sleeve wear simulation analysis model, wherein the guide blade includes a guide vane and a blade; An establishment module is used to establish a turbine guide blade sleeve wear model, wherein the turbine guide blade sleeve wear model includes a turbine guide blade sleeve wear model and a turbine blade sleeve wear model; A preset module is used to preset the number of guide blade movements; The first calculation module is used to take a number of characteristic water heads between the maximum water head and the minimum water head of the turbine, obtain the normal operating power interval corresponding to each characteristic water head when the turbine guide blade moves the preset number of guide blade movements, obtain the guide vane opening corresponding to the endpoint value of the normal operating power interval under each characteristic water head according to the normal operating power interval and the turbine operation characteristic curve, and calculate the guide vane opening difference according to the guide vane opening corresponding to the endpoint value of the normal operating power interval, and obtain the blade opening interval by interpolation according to the guide vane opening corresponding to the endpoint value of the normal operating power interval and the turbine association curve, and obtain the blade opening difference through the blade opening interval; A second calculation module is used to calculate the guide vane angle corresponding to the guide vane opening according to the guide vane opening difference and the guide vane angle calculation formula; A third calculation module is used to calculate the blade angle corresponding to the blade opening according to the blade opening difference and the blade angle calculation formula; a fourth calculation module, configured to calculate the guide vane tangential slip distance and the blade tangential slip distance according to the guide vane angle and the blade angle, respectively; a fifth calculation module, configured to calculate the guide vane water pressure acting on the guide vane and the blade water pressure acting on the blade according to the characteristic water head; a sixth calculation module, configured to obtain a guide vane sleeve pressure and a blade sleeve pressure according to the guide vane water pressure, the blade water pressure and a sleeve contact interaction mode; a seventh calculation module, configured to obtain the guide vane sleeve wear amount corresponding to the characteristic water head according to the guide vane sleeve pressure, the guide vane tangential slip distance and the turbine guide vane sleeve wear model, or / and obtain the blade sleeve wear amount corresponding to the characteristic water head according to the blade sleeve pressure, the blade tangential slip distance and the turbine blade sleeve wear model; A correlation module, for establishing a guide vane sleeve wear correlation matrix and a blade wear correlation matrix according to the blade sleeve wear corresponding to the characteristic water head, the guide vane sleeve wear, and the number of guide vane actions; An evaluation module is used to obtain the guide vane sleeve wear and the blade sleeve wear at any water head and any number of movements based on the characteristic water head, the number of guide vane movements, the guide vane sleeve wear correlation matrix and the blade wear correlation matrix by using a linear interpolation method, and take the guide vane sleeve wear and / or the blade sleeve wear as the evaluation result.

8. The turbine guide blade bushing wear assessment system according to claim 7, characterized in that: The first calculation module includes: A corresponding unit is used to obtain two endpoint values ​​of the normal operating power interval according to the normal operating power interval corresponding to each characteristic water head, as a first endpoint value and a second endpoint value, wherein the first endpoint value is smaller than the second endpoint value; A matching unit, configured to match the first endpoint value and the second endpoint value to a turbine operation characteristic curve to obtain a first guide vane opening corresponding to the first endpoint value and a second guide vane opening corresponding to the second endpoint value; a first calculation unit, configured to calculate a difference between the second guide vane opening and the first guide vane opening to obtain a guide vane opening difference; The second calculation unit is used to obtain the first blade opening and the second blade opening by interpolation method according to the second guide vane opening, the first guide vane opening and the turbine coordination curve, the first blade opening and the second blade opening constituting the blade opening interval, and the first blade opening and the second blade serving as endpoint values ​​of the blade opening interval.

9. A terminal device, comprising a memory and a processor, characterized in that: The memory stores a computer program that can be run on the processor, and when the processor loads and executes the computer program, the method according to any one of claims 1 to 6 is adopted.

10. A computer-readable storage medium having a computer program stored therein, characterized in that: When the computer program is loaded and executed by a processor, the method according to any one of claims 1 to 6 is adopted.

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