Control Method, Device and Fan Tester for Exhaust Pipe Road Adjusting Valve

Abstract

The present disclosure relates to a control method, device and fan tester for an outer duct exhaust pipeline regulating valve. A plurality of outer duct exhaust pipelines of the fan tester are arranged at intervals in the circumferential direction, and each exhaust pipeline is provided with a regulating valve. The control method includes: obtaining and comparing the valve position values of the valves in the enabled state; when the valve position values of the valves in the enabled state are the same, simultaneously adjusting the valves in the enabled state to the same valve position value; when the valve position values of the valves in the enabled state are different, adjusting each valve in a one-by-one equalizing manner; wherein, the one-by-one equalizing manner includes: sorting the valves in the enabled state according to the distance between the valve position value and the target adjustment value, and first adjusting the valve with the farthest distance from the target adjustment value, and when its valve position value reaches the same as the next valve, simultaneously adjusting the valves with the same valve position value to the same as the next valve, and so on, so that the valve position values of the valves in the enabled state reach the same.

Description

Technical Field

[0001] The present disclosure relates to the technical field of aero-engine tester control, and particularly to a control method and device for an outer bypass exhaust pipeline regulating valve and a fan tester. Background Art

[0002] An aero-engine fan tester is used to conduct verification tests on a fan test piece, such as the design performance, flow characteristics of the engine component - the fan test piece, and the matching problem with the fan, etc., so as to provide technical support for the development of the fan of a large passenger aircraft engine.

[0003] The intake of the fan test piece is atmospheric intake, and at the outlet, it is successively connected to a transition section, an exhaust plenum chamber, an exhaust pipeline, a regulating valve, and a muffler exhaust tower. The compressed gas at the outlet of the test piece is discharged into the atmosphere after noise reduction. The exhaust plenum chamber consists of an inner bypass plenum chamber and an outer bypass plenum chamber. A regulating valve is provided on the exhaust pipeline. The regulating valve on the outer bypass exhaust pipeline is adjusted in terms of valve opening at different relative corrected speeds (from 0.3 to 1.0% ND) of the test piece through the electrical control system of the tester, so that the measured value of the total pressure measurement point at the outlet section of the outer bypass of the test piece changes, thereby realizing the control of the outer bypass pressure ratio of the test piece (the ratio of the total pressure value at the outlet section of the test piece to the total pressure value at the inlet section of the test piece).

[0004] The exhaust corrected flow rate of the outer bypass exhaust pipeline of the fan tester is relatively large, and the gas flow cross-sectional area is large. It is impossible to select a regulating valve with a large nominal diameter to control the total pressure value at the outlet of the outer bypass of the test piece. Instead, it is designed with four exhaust pipelines with the same pipe diameter connected to the outer bypass plenum chamber in a circumferentially evenly distributed manner, and each pipeline is equipped with a regulating valve with the same and relatively small nominal diameter.

[0005] For such a structure, when controlling the four regulating valves, ensuring the circumferential uniformity of the exhaust flow field is the key to the design. Summary of the Invention

[0006] Embodiments of the present disclosure provide a control method and device for an outer bypass exhaust pipeline regulating valve and a fan tester, which can improve the circumferential uniformity of the exhaust flow field at the outlet of the outer bypass of the fan test piece.

[0007] According to the first aspect of the present disclosure, there is provided a control method for an outer bypass exhaust pipeline regulating valve of a fan tester. A plurality of exhaust pipelines are arranged at intervals along the circumference, and each exhaust pipeline is provided with a valve for adjustment. The control method includes:

[0008] Obtaining and comparing the valve position values of the valves in the enabled state;

[0009] When the valve position values of the valves in the enabled state are the same, adjusting the valves in the enabled state to the same valve position value simultaneously;

[0010] When the valve position values of the valves in the enabled state are inconsistent, the valves are adjusted in a one-by-one alignment manner;

[0011] Among them, the one-by-one alignment method includes: sorting the valves in the enabled state according to the distance between the valve position value and the target adjustment value, and first adjusting the valve with the farthest distance from the target adjustment value. When its valve position value reaches the same as the next valve, the valves with the same valve position value are adjusted simultaneously to be the same as the next valve, and so on, so that the valve position values of all the valves in the enabled state reach the same.

[0012] In some embodiments, the target adjustment value is the target valve position value or the target change amount of the valve position value.

[0013] In some embodiments, the target adjustment value is the target valve position value. During the process of adjusting the valve, the control method further includes:

[0014] Judging whether the sum of the valve position values of all the valves in the enabled state and the disabled state reaches the target adjustment value multiplied by the number of all valves, or reaches the total valve position limit adjustment value of all valves. If either condition is met, the adjustment is stopped; or

[0015] The target adjustment value is the target change amount of the valve position value. During the process of adjusting the valve, the control method further includes:

[0016] Judging whether the sum of the valve position values of all the valves in the enabled state and the disabled state reaches the "sum value" of the sum of the initial valve position values of all valves and the target change amount of the valve position value multiplied by the number of all valves, or reaches the total valve position limit adjustment value of all valves. If either condition is met, the adjustment is stopped.

[0017] In some embodiments, before obtaining and comparing the valve position values of the valves in the enabled state, the control method further includes:

[0018] Setting the states of the valves, and the states of the valves include the enabled state and the disabled state.

[0019] In some embodiments, when it is necessary to open the valve and the valve position values of the valves in the enabled state are inconsistent, the one-by-one alignment method includes:

[0020] Sorting the valves in the enabled state from small to large according to the distance between the valve position value and the target adjustment value, and first opening the valve with the smallest valve position value. When its valve position value reaches the same as the next valve, the valves with the same valve position value are opened simultaneously to be the same as the next valve, and so on, so that the valve position values of all the valves in the enabled state reach the same.

[0021] In some embodiments, when it is necessary to close the valve and the valve position values of the valves in the enabled state are inconsistent, the one-by-one alignment method includes:

[0022] Sort the enabled valves in descending order according to the distance between the valve position value and the target adjustment value, first close the valve with the largest valve position value, and when its valve position value reaches the same as the next valve, close the valves with the same valve position value simultaneously until they reach the same as the next valve, and so on, so that the valve position values of all enabled valves reach the same.

[0023] In some embodiments, the control method further includes:

[0024] Before adjusting the valves, select a control mode for each valve, and the control modes include:

[0025] Manual valve position mode, configured to use the valve position value of the valve as the controlled object;

[0026] Exhaust gas flow control mode, configured to use the exhaust gas flow as the controlled object and the valve position value of the valve as the target control object; and

[0027] Pressure ratio control mode, configured to use the pressure ratio as the controlled object and the valve position value of the valve as the target control object.

[0028] In some embodiments, the control method further includes:

[0029] When the fan test piece is tested at a low rotational speed state, only enable some of the valves to reduce the changes in the exhaust gas flow and the total pressure value of the outlet section, and adjust to achieve state points with multiple different pressure ratio values, so as to obtain a performance recording curve composed of multiple sets of stable performance parameters.

[0030] In some embodiments, the control method further includes:

[0031] During the test, when the fan test piece has external duct inlet surge or deep stall, trigger the anti-surge mode. In the anti-surge mode, reset the disabled valves to the enabled state, and open the valves in the way of catching up one by one. When the sum of the valve position values of all valves reaches the sum of the initial valve position values plus the product of the preset increased opening value and the number of all valves, stop the adjustment.

[0032] According to the second aspect of the present disclosure, there is provided a control device for the external duct exhaust pipe regulating valve of a fan tester, including a controller for executing the control method of the external duct exhaust pipe regulating valve of the fan tester in the above embodiments.

[0033] In some embodiments, the control device further includes: a manual key panel, electrically connected to the controller, and configured to perform at least one of the following functions:

[0034] Before adjusting the valves, select the control mode for each valve, and the control modes are manual valve position mode, exhaust gas flow control mode or pressure ratio control mode;

[0035] Set the states of the valves, where the states of the valves include an enabled state and a disabled state; and

[0036] Change the controlled target value through the increase / decrease buttons, including: valve position value, flow value, or pressure ratio value; and

[0037] Execute the anti-surge function.

[0038] In some embodiments, the control device further includes: a human-machine interaction component, electrically connected to the controller, and configured to perform at least one of the following functions:

[0039] Real-time display of the target valve position values of each valve and the valve position values feedback by each valve, real-time display of the pressure ratio value of the bypass and the exhaust flow value;

[0040] Input the controlled target value, including: valve position value, flow value, or pressure ratio value;

[0041] Set the maximum and minimum limit adjustment values of the sum of the valve position values of all valves; and

[0042] Set the increased opening value of the valve during anti-surge.

[0043] According to the third aspect of the present disclosure, there is provided a fan tester, including:

[0044] A plurality of exhaust pipelines, arranged at intervals in the circumferential direction, and each of the exhaust pipelines is provided with a valve for adjustment; and

[0045] The bypass exhaust pipeline adjustment valve control device of the fan tester in the above embodiment, controlling each valve.

[0046] The bypass exhaust pipeline adjustment valve control method of the fan tester in the embodiments of the present disclosure adopts different control methods according to the valve position values of different valves. When the valve position values of the valves in the enabled state are the same, the valves with the same valve position are adjusted simultaneously. When the valve position values of the valves in the enabled state are different, a one-by-one chasing method is adopted for control. Thus, by controlling the opening of each valve, the change range of the bypass exhaust pressure ratio or flow rate and the exhaust flow field of the fan test piece can be accurately adjusted to ensure the uniformity of the bypass exhaust flow field. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings described herein are used to provide a further understanding of the present disclosure, form a part of this application, and the illustrative embodiments and descriptions of the present disclosure are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure. In the drawings:

[0048] Figure 1 It is a block diagram of the module composition of some embodiments of the bypass exhaust pipeline adjustment valve control device of the fan tester of the present disclosure;

[0049] Figure 2 This is a schematic structural diagram of the outer duct exhaust pipe of the disclosed fan tester;

[0050] Figure 3 This is a schematic flowchart of some embodiments of the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester;

[0051] Figure 4 This is a schematic flowchart of the process of selecting the valve control mode and the number of valves in the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester;

[0052] Figure 5 This is a schematic flowchart of some embodiments of the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester to open the valve;

[0053] Figure 6 This is a schematic flowchart of some embodiments of the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester to close the valve;

[0054] Figure 7 This is a schematic flowchart of some other embodiments of the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester to open the valve;

[0055] Figure 8 This is a schematic flowchart of some other embodiments of the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester to close the valve;

[0056] Figure 9 This is a schematic flowchart of some embodiments of the method for controlling the regulating valve of the outer duct exhaust pipeline of the disclosed fan tester to execute the anti - surge mode. Detailed implementation manners

[0057] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect so defined can be combined with any other one or more aspects, unless clearly stated that they cannot be combined. In particular, any feature considered to be preferred or advantageous can be combined with one or more other features considered to be preferred or advantageous.

[0058] The terms "first", "second", etc. appearing in the present disclosure are only for convenient description to distinguish different components with the same name, and do not represent a sequence or primary - secondary relationship.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", "lower", "left", and "right" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and does not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the protection scope of the present invention.

[0060] Figure 2 As shown, a perforated plate 10 is provided at a position of the outer duct exhaust pipe 9 close to the inlet, and a plurality of exhaust pipe lines 5, for example, 4, are connected to the inlet end. A valve 1 for realizing the adjustment of the outer duct exhaust is provided at the first end of each exhaust pipe line 5 connected to the outer duct exhaust pipe 9. The second end of the exhaust pipe line 5 is successively provided with an outer duct transition pipe 8, an outer duct transition section 7, and an exhaust collector 6 along the gas flow direction.

[0061] During the test process, the gas flow enters the exhaust pipe line 5 from the corresponding outer duct transition pipe 8, outer duct transition section 7, and exhaust collector 6 of each exhaust pipe line 5, and after passing through the valve 1, it is collected into the outer duct exhaust pipe 9 through the perforated plate 10.

[0062] The design parameters of the inlet and exhaust system of the fan tester are shown in Table 1.

[0063] Table 1 Design parameters of the inlet and exhaust system of the fan tester

[0064]

[0065] A valve 1 for adjusting the flow rate and pressure ratio is provided on the outer duct exhaust pipe line 5 of the fan tester. The valve 1 on the outer duct exhaust pipe line 5 is adjusted by the tester controller 2 at different relative conversion speeds (from 0.3 to 1.0% ND) of the test piece to change the measured value of the total pressure measurement point at the outer duct outlet section of the test piece, thereby realizing the control of the outer duct pressure ratio of the test piece (the ratio of the total pressure value at the outlet section of the test piece to the total pressure value at the inlet section of the test piece).

[0066] When controlling the valves 1 on a plurality of exhaust pipe lines 5, it is difficult to ensure the circumferential uniformity of the exhaust flow field.

[0067] To solve this problem, the present disclosure provides a control method for the regulating valve of the outer duct exhaust pipe line of a fan tester. A plurality of exhaust pipe lines 5 are arranged at intervals along the circumferential direction, and a valve 1 for adjustment is provided on each exhaust pipe line 5. The valve 1 is used to adjust the flow rate and pressure ratio of the exhaust pipe line 5. For example, a plurality of exhaust pipe lines 5 are arranged at equal intervals along the circumferential direction, and the plurality of exhaust pipe lines 5 have the same diameter; for example, four exhaust pipe lines 5 are provided. As Figure 3 shown, the control method includes:

[0068] Step 110: Obtain and compare the valve position values of each enabled valve 1;

[0069] Step 120: Determine whether the valve position values of each enabled valve 1 are the same. If they are the same, execute Step 130; if they are not the same, execute Step 140. The situation where they are not the same includes that the valve position values of each valve 1 are all different, or the valve position values of some valves 1 are different. Among them, the valve position values of each valve 1 being the same includes that the valve position values are exactly equal, and that the valve position values of different valves 1 are close and the difference is within a preset range.

[0070] Step 130: Simultaneously adjust the valve position values of each enabled valve 1 by the same amount;

[0071] Step 140: Adjust each valve 1 in a one-by-one alignment manner. Among them, the one-by-one alignment manner includes: Sort the enabled valves 1 according to the distance between the valve position value and the target adjustment value, and first adjust the valve 1 that is farthest from the target adjustment value. When its valve position value reaches the same as the next valve 1, simultaneously adjust the valves 1 with the same valve position value to be the same as the next valve 1. In this way, the valve position values of each enabled valve 1 are made the same in turn.

[0072] Among them, in Step 140, the target adjustment value is the target valve position value or the target change amount of the valve position value. The target valve position value is the valve position value that a single valve 1 needs to be adjusted to, and the target change amount of the valve position value is the target increase amount or decrease amount of the valve position value of a single valve 1.

[0073] In this embodiment, when controlling the valves 1 on multiple exhaust pipelines 5, according to the valve position values of different valves 1, different control methods are adopted. When the valve position values of each enabled valve 1 are the same, the valve position values are adjusted simultaneously by the same amount. When the valve position values of each enabled valve 1 are not the same, a one-by-one alignment manner is adopted for control. Thus, by controlling the opening degrees of each valve 1, the change range of the external bypass exhaust pressure ratio or flow rate and the exhaust flow field of the fan test piece can be accurately adjusted to ensure the circumferential uniformity and consistency of the external bypass exhaust flow field.

[0074] Since the valve 1 that is farthest from the target adjustment value in terms of the valve position value has the most significant impact on the exhaust flow field at the outlet of the test piece, adjusting it first can make the valve position values of each valve 1 tend to be close, so as to improve the circumferential uniformity of the external bypass exhaust flow field.

[0075] In some embodiments, the target adjustment value is the target valve position value. During the process of adjusting the valve, the control method further includes:

[0076] Step 150: Determine whether the sum of the valve position values of all valves in the enabled state and the disabled state reaches the target adjustment value multiplied by the number of all valves, or reaches the total valve position limit adjustment value of all valves. If either condition is met, stop the adjustment.

[0077] In this embodiment, Step 150 (not shown in the figure) is judged in real time during the adjustment of Valve 1. When the valve position value of all Valve 1s reaches the target adjustment value multiplied by the number of all Valve 1s, stop the adjustment; or when the sum of the valve position values of all Valve 1s reaches the total valve position limit adjustment value of all Valve 1s, stop the adjustment, which can improve the reliability of Valve 1 control and thus ensure the safety of Valve 1 use.

[0078] In some embodiments, the target adjustment value is the target change amount of the valve position value. During the process of adjusting the valve, the control method further includes:

[0079] Step 150': Determine whether the sum of the valve position values of all valves in the enabled state and the disabled state reaches the "sum value" of the sum of the initial valve position values of all valves and the target change amount of the valve position value multiplied by the number of all valves, or reaches the total valve position limit adjustment value of all valves. If either condition is met, stop the adjustment. The target change amount of the valve position value can be an increment or a decrement. When it is a decrement, the negative sign should be considered when judging the sum of the valve position values of all valves.

[0080] In this embodiment, Step 150' (not shown in the figure) is judged in real time during the adjustment of Valve 1. When the valve position value of all Valve 1s reaches the "sum value" of the sum of the initial valve position values of all valves and the target change amount of the valve position value multiplied by the number of all valves, stop the adjustment; or when the sum of the valve position values of all Valve 1s reaches the total valve position limit adjustment value of all Valve 1s, stop the adjustment, which can improve the reliability of Valve 1 control and thus ensure the safety of Valve 1 use.

[0081] In some embodiments, as Figure 4 shown, before Step 110 obtains and compares the valve position values of each enabled Valve 1, the control method further includes:

[0082] Step 100: Set the states of each Valve 1. The states of Valve 1 include the enabled state and the disabled state.

[0083] This embodiment can set the number of simultaneously working Valve 1s according to the actual test conditions. For example, in the working condition with a large exhaust flow regulation range, all Valve 1s can be in the enabled state. In the case of a small exhaust flow regulation range, in order to improve the accuracy of flow control, some Valve 1s can be in the enabled state while other Valve 1s are in the disabled state. Step 100 is not shown in the figure.

[0084] In some embodiments, asFigure 4 As shown, the control method further includes:

[0085] Step 100': Before adjusting the valve, select a control mode for each valve. The control modes include:

[0086] Manual valve position mode, configured to use the valve position value of the valve as the controlled object;

[0087] Exhaust gas flow control mode, configured to use the exhaust gas flow as the controlled object and the valve position value of the valve as the target control object;

[0088] Pressure ratio control mode, configured to use the pressure ratio as the controlled object and the valve position value of the valve as the target control object.

[0089] This embodiment provides different control modes so as to select a matching control mode under different test conditions of the fan tester to meet the test requirements. Step 100' is not shown in the figure.

[0090] In some embodiments, when it is necessary to open Valve 1 and the valve position values of the enabled Valve 1s are inconsistent, the method of making them consistent one by one includes:

[0091] Sort the enabled Valve 1s in ascending order according to the distance between the valve position value and the target adjustment value, and first open the Valve 1 with the smallest valve position value. When its valve position value reaches the same as the next Valve 1, open the valves 1 with the same valve position value simultaneously until they reach the same as the next Valve 1. In this way, the valve position values of all enabled Valve 1s are made consistent. Wherein, the target adjustment value is the target valve position value or the target increase amount of the valve position value.

[0092] In some embodiments, when it is necessary to close Valve 1 and the valve position values of the enabled Valve 1s are inconsistent, the method of making them consistent one by one includes:

[0093] Sort the enabled Valve 1s in descending order according to the distance between the valve position value and the target adjustment value, and first close the Valve 1 with the largest valve position value. When its valve position value reaches the same as the next Valve 1, close the valves 1 with the same valve position value simultaneously until they reach the same as the next Valve 1. In this way, the valve position values of all enabled Valve 1s are made consistent. Wherein, the target adjustment value is the target valve position value or the target decrease amount of the valve position value.

[0094] In some embodiments, the control method further includes:

[0095] Step 160: When the fan test piece is tested at a low rotational speed, only enable some of the valves 1 to reduce the changes in the exhaust gas flow rate and the total pressure value at the outlet section. By adjusting the valve position values of the valves, achieve state points with multiple different pressure ratio values, thereby obtaining a performance recording curve composed of multiple sets of stable performance parameters. Among them, the low rotational speed state is when the relative converted rotational speed is between 30% and 70% of the set rotational speed.

[0096] This embodiment can, through the control of a single or some of the valves 1, realize the adjustment function of a small change in exhaust gas and provide the performance parameters required for performance recording. Under low rotational speed conditions of the fan test piece, generally, the adjustment range of the pressure ratio of the outer flow exhaust is <0.05. However, during performance recording tests, performance recording is required at multiple state points (usually about 10) between the blocked point and the near surge point. The flow cross-sectional area of the outer flow exhaust pipe 5 is large. The control method can be changed from initially controlling all the valves 1 (for example, 4 valves 1) simultaneously to adjusting the valve position values of any selected single valve 1 or two valves 1 to be closed slightly, achieving a small change in the exhaust gas flow rate / total pressure value at the outlet section, realizing the adjustment of multiple state points (different pressure ratios), and obtaining a performance recording curve composed of multiple sets of stable performance parameters.

[0097] In the fan test piece, each valve 1 has a fast anti-surge characteristic, that is, during the stall (surge) margin test, when the test piece experiences deep stall or surge, the valve 1 can open, for example, an additional 20% of the valve position value on the basis of the current opening within 0.5 s, eliminating the stall (surge) of the test piece. The driving mode of the valve 1 is servo-hydraulic drive.

[0098] To eliminate surges during the test, in some embodiments, the control method further includes:

[0099] Step 170: When the outer flow of the fan test piece enters a surge or deep stall during the test, trigger the anti-surge mode. In the anti-surge mode, reset the valves 1 in the disabled state to the enabled state, and open the valves 1 in a sequential alignment manner. When the sum of the valve position values of all the valves 1 reaches the sum of the initial valve position values plus the product of the preset increased opening value and the number of all the valves 1, stop the adjustment.

[0100] In this embodiment, when the fan test piece conducts the near surge point test at each rotational speed, when the pulsating pressure waveform at the outlet of the outer flow of the test piece shows a typical stall / surge signal, or when a stall / surge popping sound phenomenon occurs at the site, manually start or automatically start the anti-surge measure with one key, reset the valves 1 in the disabled state to the enabled state, and open the valves 1 in a sequential alignment manner. Within 0.5 s, the outer flow exhaust valves 1 are opened an additional, for example, 20% of the valve position value in total.

[0101] In some embodiments, the control method of the present disclosure further includes: when a fan test piece is performing a stall or surge margin test, reducing the set value of the target change amount of the valve position value or reducing the number of valves in the enabled state, so as to approach the stall point or surge point by reducing the valve position value of the valve, thereby providing performance parameters for the calculation of the stall or surge margin of the fan test piece.

[0102] Specifically, when the fan test piece is performing a stall (surge) margin test and in a working condition where it is necessary to approach the "stall (surge) point" more closely, one way is to make the target change amount of the valve position value smaller through the human-machine interaction component 4, so that the change amount is smaller each time the increase / decrease button is adjusted on the manual keypad 3; the other way is to change from the initial mode of controlling all valves 1 simultaneously to selecting to adjust the closing of the valve position value of any part of the valves 1 (single or two), so as to provide more accurate performance parameters (flow rate, pressure ratio) for the calculation of the stall (surge) margin of the fan test piece.

[0103] The following illustrates the control method of the valve 1 of the present disclosure by taking 4 valves 1 as an example. The valve 1 has an enabled state (Enable state) and a disabled state (Disable state).

[0104] As Figure 5 and Figure 6 shown, it is a way of manual valve position control mode, all 4 valves 1 are in the Enable state, and the human-machine interaction component 4 inputs the target valve position value HMI_PSN_SP. The control method in this state is:

[0105] As Figure 5 shown, when the human-machine interaction component 4 inputs the target valve position value HMI_PSN_SP to open the valve 1, after reading and comparing the valve position values of the valves 1 in the Enable state, first control the valve 1 with the smallest valve position value, VALVE_MIN_1, to open. When the valve position value of the valve 1VALVE_MIN_1 is equal to the valve position value of the second smallest valve 1VALVE_MIN_2, then control the valves 1VALVE_MIN_1 and 1VALVE_MIN_2 to open simultaneously; when the valve position values of the valves 1VALVE_MIN_1, VALVE_MIN_2 are equal to the valve position value of the third smallest valve 1VALVE_MIN_3, then control the valves 1VALVE_MIN_1, 1VALVE_MIN_2 and 1VALVE_MIN_3 to open simultaneously; when the valve position values of the valves 1VALVE_MIN_1, VALVE_MIN_2, VALVE_MIN_3 are equal to the valve position value of the fourth smallest valve 1VALVE_MIN_4, then control the valves 1VALVE_MIN_1, 1VALVE_MIN_2, VALVE_MIN_3 and 1VALVE_MIN_4 to open simultaneously.

[0106] Meanwhile, during the entire control process of opening the valve 1, when the sum of the valve position values of each valve 1 (in Enable and Disable states) is equal to 4 times the target valve position value HMI_PSN_SP or equal to the total valve position limit adjustment value of 4 valves, the control stops, and this total valve position limit adjustment value is the maximum limit adjustment value.

[0107] As Figure 6 shown, when the human-machine interaction component 4 inputs the target valve position value HMI_PSN_SP to close the valve 1, after reading and comparing the valve position values of each valve 1 in the Enable state, first control the valve 1 with the largest valve position value, VALVE_MAX_1, to close. When the valve position value of the valve 1VALVE_MAX_1 is equal to the valve position value of the second-largest valve 1VALVE_MAX_2, then control the valves 1VALVE_MAX_1 and 1VALVE_MAX_2 to close simultaneously; when the valve position values of the valves 1VALVE_MAX_1 and VALVE_MAX_2 are equal to the valve position value of the third-largest valve 1VALVE_MAX_3, then control the valves 1VALVE_MAX_1, 1VALVE_MAX_2, and 1VALVE_MAX_3 to close simultaneously; when the valve position values of the valves 1VALVE_MAX_1, VALVE_MAX_2, and VALVE_MAX_3 are equal to the valve position value of the fourth-largest valve 1VALVE_MAX_4, then control the valves 1VALVE_MAX_1, 1VALVE_MAX_2, VALVE_MAX_3, and 1VALVE_MAX_4 to close simultaneously.

[0108] Meanwhile, during the entire control process of closing the valve 1, when the sum of the valve position values of each valve 1 (in Enable and Disable states) is equal to 4 times the target valve position value HMI_PSN_SP or equal to the total valve position limit adjustment value of 4 valves, the control stops, and this total valve position limit adjustment value is the minimum limit adjustment value.

[0109] As Figure 7 and Figure 8 shown, for the manual valve position control mode, when all 4 valves 1 are in the Enable state and the "increase / decrease" key button on the manual key panel 3PB is manually triggered to control the valve position opening, the control method in this state is as follows:

[0110] As Figure 7As shown, manually trigger the "Increment" button on the manual keypad 3PB. The valve position increment value is PB_INCREMENT_VALUE. After reading and comparing the valve position values of each valve 1 in the Enable state, first control the valve 1VALVE_MIN_1 with the smallest valve position value to open. When the valve position value of valve 1VALVE_MIN_1 is equal to the valve 1VALVE_MIN_2 with the second smallest valve position value, then control both valve 1VALVE_MIN_1 and valve 1VALVE_MIN_2 to open simultaneously; when the valve position values of valve 1VALVE_MIN_1 and VALVE_MIN_2 are equal to the valve 1VALVE_MIN_3 with the third smallest valve position value, then control valve 1VALVE_MIN_1, valve 1VALVE_MIN_2, and valve 1VALVE_MIN_3 to open simultaneously; when the valve position values of valve 1VALVE_MIN_1, VALVE_MIN_2, and VALVE_MIN_3 are equal to the valve 1VALVE_MIN_4 with the fourth smallest valve position value, then control valve 1VALVE_MIN_1, valve 1VALVE_MIN_2, VALVE_MIN_3, and valve 1VALVE_MIN_4 to open simultaneously.

[0111] Meanwhile, during the entire control process of opening valve 1, when the sum of the valve position values of each valve 1 (in the Enable and Disable states) is equal to the "sum value" of the sum of the original valve position values of each valve 1 (in the Enable and Disable states) and 4 times the valve position increment value PB_INCREMENT_VALVE or equal to the total valve position limit adjustment value of 4 valves, then stop the control. This total valve position limit adjustment value is the maximum limit adjustment value.

[0112] Such as Figure 8As shown, manually trigger the "minus" button on the manual keypad 3PB. The valve position reduction value is PB_INCREMENT_VALUE. After reading and comparing the valve position values of each valve 1 in the Enable state, first control the valve 1 with the largest valve position value, 1VALVE_MAX_1, to close. When the valve position value of valve 1VALVE_MAX_1 is equal to the valve position value of the second-largest valve 1VALVE_MAX_2, then simultaneously control valves 1VALVE_MAX_1 and 1VALVE_MAX_2 to close; when the valve position values of valves 1VALVE_MAX_1 and 1VALVE_MAX_2 are equal to the valve position value of the third-largest valve 1VALVE_MAX_3, then simultaneously control valves 1VALVE_MAX_1, 1VALVE_MAX_2, and 1VALVE_MAX_3 to close; when the valve position values of valves 1VALVE_MAX_1, 1VALVE_MAX_2, and 1VALVE_MAX_3 are equal to the valve position value of the fourth-largest valve 1VALVE_MAX_4, then simultaneously control valves 1VALVE_MAX_1, 1VALVE_MAX_2, 1VALVE_MAX_3, and 1VALVE_MAX_4 to close.

[0113] Meanwhile, during the entire control process of closing valve 1, when the sum of the valve position values of each valve 1 (in Enable and Disable states) is equal to the "sum value" of the sum of the original valve position values of each valve 1 (in Enable and Disable states) and 4 times the valve position reduction value PB_INCREMENT_VALVE (with a negative sign), or equal to the total valve position limit adjustment value of 4 valves, the control stops. This total valve position limit adjustment value is the minimum limit adjustment value.

[0114] In addition, when the number of valves 1 of the controlled valve 1 (valve 1 in Enable state) is 3 or 2 or 1, the controller 2 only controls the valves 1 in the Enable state, and the valves 1 in the Disable state are "frozen". However, the overall control method is basically the same as when the number of valves 1 of the controlled valve 1 (valve 1 in Enable state) is 4, which is to first control the valve 1 with the maximum / minimum valve position.

[0115] In short, its control method is:

[0116] When the valve positions of the Enable valves 1 are basically the same, the controller 2 simultaneously opens or closes the same valve position value for the Enable valves 1.

[0117] When the valve positions of the Enable valves 1 are inconsistent, it is designed in a "one-by-one alignment" method. First, control the valve 1 with the minimum / maximum valve position. After "aligning" the next valve 1, simultaneously control the valves 1 with basically the same valve position values.

[0118] When the sum of the valve position values of the four valves 1 (Enable and Freeze states) is equal to the target valve position value or equal to the total valve position limit adjustment value (maximum or minimum value), the control of valve 1 is stopped.

[0119] As Figure 9 shown, during the test process, when the fan test article's outer flow path enters a surge state, the anti-surge function is manually or automatically triggered. The control method in this state is as follows:

[0120] When the test article's outer flow path enters a surge state or a deep stall state, the "anti-surge" signal is triggered manually / automatically. The control mode of valve 1 is reset to the manual valve position control mode. Valve 1 in the Disable state is reset to valve 1 in the Enable state. The four valves 1 are opened in a sequential catch-up manner, that is, the valve 1 with the smallest valve position value is controlled first. When the sum of the valve position values of the four valves 1 is equal to the sum of the initial valve position values plus four times the increased opening value, the control stops. The increased opening value is a preset value that can be adjusted according to requirements.

[0121] Secondly, the present disclosure provides a control device for the outer flow path exhaust pipe regulating valve of a fan tester. In some embodiments, it includes a controller 2 for the control method of the outer flow path exhaust pipe regulating valve of the fan tester in the above embodiments.

[0122] In some embodiments, the control device further includes: a manual key panel 3, electrically connected to the controller 2, and configured to perform at least one of the following functions:

[0123] Before adjusting valve 1, select the control mode of each valve 1. The control modes are manual valve position mode, exhaust flow control mode, or pressure ratio control mode;

[0124] Set the state of each valve 1. The states of valve 1 include enable state and disable state;

[0125] Change the controlled target value through the increase / decrease buttons, including: valve position value, flow value, or pressure ratio value; and

[0126] Execute the anti-surge function.

[0127] In some embodiments, the control device further includes: a human-machine interaction component 4, such as a human-machine interface, electrically connected to the controller 2, and configured to perform at least one of the following functions:

[0128] Real-time display of the target valve position value of each valve 1 and the valve position value feedback by each valve 1, real-time display of the pressure ratio value and exhaust flow value of the outer flow path;

[0129] Input the controlled target value, including: valve position value, flow value, or pressure ratio value;

[0130] Set the maximum and minimum limit adjustment values for the sum of the valve position values of all valves 1; and

[0131] Set the increased opening value of valve 1 during asthma remission.

[0132] Specifically, the signals of valve 1 may include valve position feedback signals and valve position limit adjustment signals. The signals issued by the manual keypad panel 3 may include: the state setting signal of valve 1, the control mode signal of valve 1, and the target change amount of the valve position value. These signals can all be connected to the signal input channels of the controller 2, and the controller 2 outputs the control signal of valve 1 through the output channels.

[0133] Finally, the present disclosure provides an aeroengine fan tester, including: exhaust pipe lines 5, which are arranged at intervals in the circumferential direction, and each exhaust pipe line 5 is provided with a valve 1 for adjustment. For example, a plurality of exhaust pipe lines 5 are arranged at intervals in the circumferential direction, and the plurality of exhaust pipe lines 5 may have the same diameter; and the control device for the outer bypass exhaust pipe valve of the fan tester in the above embodiment, which controls each valve 1.

[0134] The above has introduced the embodiments provided by the present disclosure in detail. Specific embodiments are used in this article to elaborate on the principles and implementation manners of the present disclosure. The description of the above embodiments is only used to help understand the method and its core idea of the present disclosure. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present disclosure, several improvements and modifications can still be made to the present disclosure, and these improvements and modifications also fall within the protection scope of the claims of the present disclosure.

Claims

1. A control method for an outer duct exhaust pipe regulating valve, characterized in that, A plurality of external duct exhaust pipelines of the fan tester are arranged at circumferential intervals, and each of the exhaust pipelines is provided with a valve for adjustment. The control method includes: Obtain and compare the valve position values of the valves in the enabled state; When the valve position values of the valves in the enabled state are the same, adjust the valves in the enabled state to the same valve position value simultaneously; When the valve position values of the valves in the enabled state are different, adjust the valves in a sequential alignment manner; Among them, the sequential alignment manner includes: sorting the valves in the enabled state according to the distance between the valve position value and the target adjustment value, and first adjusting the valve with the farthest distance from the target adjustment value, and when its valve position value reaches the same as the next valve, adjusting the valves with the same valve position value to the same as the next valve in sequence, so that the valve position values of the valves in the enabled state reach the same in sequence.

2. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: The target adjustment value is the target valve position value or the target change amount of the valve position value.

3. The control method for the external duct exhaust pipeline regulating valve according to claim 1, characterized in that The target adjustment value is the target valve position value. During the process of adjusting the valve, the control method further includes: Judging whether the sum of the valve position values of all the valves in the enabled state and the disabled state reaches the target adjustment value multiplied by the number of all valves, or reaches the total valve position limit adjustment value of all valves. If either condition is met, stop the adjustment; or The target adjustment value is the target change amount of the valve position value. During the process of adjusting the valve, the control method further includes: Judging whether the sum of the valve position values of all the valves in the enabled state and the disabled state reaches the "sum value" of the sum of the initial valve position values of all valves and the target change amount of the valve position value multiplied by the number of all valves, or reaches the total valve position limit adjustment value of all valves. If either condition is met, stop the adjustment.

4. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: Before obtaining and comparing the valve position values of the valves in the enabled state, it further includes: Setting the states of the valves, and the states of the valves include the enabled state and the disabled state.

5. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: When it is necessary to open the valve and the valve position values of the valves in the enabled state are different, the sequential alignment manner includes: Sorting the valves in the enabled state from small to large according to the distance between the valve position value and the target adjustment value, and first opening the valve with the smallest valve position value, and when its valve position value reaches the same as the next valve, opening the valves with the same valve position value to the same as the next valve in sequence, so that the valve position values of the valves in the enabled state reach the same in sequence.

6. The control method of the outer bypass exhaust pipe regulating valve according to claim 1, characterized in that When it is necessary to close the valve and the valve position values of the valves in the enabled state are different, the sequential alignment manner includes: Sorting the valves in the enabled state from large to small according to the distance between the valve position value and the target adjustment value, and first closing the valve with the largest valve position value, and when its valve position value reaches the same as the next valve, closing the valves with the same valve position value to the same as the next valve in sequence, so that the valve position values of the valves in the enabled state reach the same in sequence.

7. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: It further includes: Before adjusting the valve, select a control mode for each valve. The control mode includes: The manual valve position mode, which is configured to use the valve position value of the valve as the controlled object; An exhaust gas flow control mode, configured to take the exhaust gas flow as the controlled object and the valve position value of the valve as the target control object; or A pressure ratio control mode, configured to take the pressure ratio as the controlled object and the valve position value of the valve as the target control object.

8. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: It further includes: When the fan test piece is tested under a rotational speed condition, only some valves are kept in an enabled state to reduce the changes in the exhaust gas flow and the total pressure value of the outlet section. By adjusting the valve position value of the valves, state points with multiple different pressure ratio values are achieved, so as to obtain a performance recording curve composed of multiple groups of stable performance parameters.

9. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: It further includes: When the fan test piece conducts a stall or surge margin test, the set value of the target change amount of the valve position value is reduced, or the number of valves in the enabled state is decreased, so as to approach the stall point or surge point by reducing the valve position value of the valves, thereby providing performance parameters for the calculation of the stall or surge margin of the fan test piece.

10. The method for controlling the regulating valve of the outer exhaust pipe according to claim 1, characterized in that: It further includes: During the test, when the fan test piece has an outer bypass inlet surge or a deep stall, a retreat surge mode is triggered. In the retreat surge mode, the valves in the disabled state are reset to the enabled state, and each valve is opened in a sequential alignment manner. When the sum of the valve position values of each valve reaches the sum of the initial valve position values plus the product of the preset increased opening value and the number of all valves, the adjustment stops.

11. An outer bypass exhaust pipe regulating valve control device, characterized in that, It includes a controller for executing the outer bypass exhaust pipe regulation valve control method according to any one of claims 1 to 10.

12. The control device for regulating valve of the outer exhaust pipe according to claim 11, characterized in that: It further includes: a manual key panel, electrically connected to the controller, and configured to perform at least one of the following functions: Before adjusting the valves, select the control mode of each valve. The control mode is a manual valve position mode, an exhaust gas flow control mode or a pressure ratio control mode; Set the state of each valve. The state of the valve includes an enabled state and a disabled state; Change the controlled target value through an increase / decrease button, including: valve position value, flow value or pressure ratio value; Or Execute the retreat surge function.

13. The control device for regulating valve of the outer exhaust pipe according to claim 11, characterized in that: It further includes: A human-machine interaction component, electrically connected to the controller, and configured to perform at least one of the following functions: Real-time display of the target valve position value of each valve and the valve position value feedback by each valve, real-time display of the pressure ratio value and the exhaust gas flow value of the outer bypass; Input the controlled target value, including: valve position value, flow value or pressure ratio value; Set the maximum and minimum limit adjustment values of the sum of the valve position values of all valves; or Set the increased opening value of the valves during retreat surge.

14. An aeroengine fan tester, characterized in that, It includes: Multiple exhaust pipes, arranged at intervals in the circumferential direction, and each exhaust pipe is provided with a valve for adjustment; And The outer bypass exhaust pipe regulation valve control device according to any one of claims 11 to 13, configured to control each valve.

Images