CN116336247A - Temporary flushing type wind tunnel pressure regulating valve control device and method with bidirectional protection function - Google Patents

Temporary flushing type wind tunnel pressure regulating valve control device and method with bidirectional protection function Download PDF

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Publication number
CN116336247A
CN116336247A CN202310598983.2A CN202310598983A CN116336247A CN 116336247 A CN116336247 A CN 116336247A CN 202310598983 A CN202310598983 A CN 202310598983A CN 116336247 A CN116336247 A CN 116336247A
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China
Prior art keywords
valve
pipeline
hydraulic
oil
pressure regulating
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CN202310598983.2A
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Chinese (zh)
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CN116336247B (en
Inventor
郭晋
刘昱
赵航
傅冰
陈雪原
鲁文博
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AVIC Shenyang Aerodynamics Research Institute
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AVIC Shenyang Aerodynamics Research Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The application discloses a temporary flushing type wind tunnel pressure regulating valve control device with a bidirectional protection function and a method thereof, belonging to the technical field of wind tunnel tests. The problem of the quick shutoff of temporary flushing formula wind tunnel air vent valve under emergency is solved, and the safety opening protection problem in the air vent valve real-time control process. According to the hydraulic device with the rapid turn-off function, the hydraulic cylinder is rigidly connected with the valve body of the pressure regulating valve, the motor-driven safety stop device is arranged in the direction of the extending end of the hydraulic cylinder, and the initial position of the motor-driven safety stop device is not collided with the extending end of the hydraulic cylinder with the maximum extension; the extending end of the hydraulic cylinder is opposite to and coaxially arranged with an ejection mechanism of the motor-driven safety stop device, and the hydraulic controller is connected with the servo controller; the hydraulic controller is used for controlling the elongation of the extending end of the hydraulic cylinder in real time, and the servo controller is used for controlling the elongation of the ejection mechanism in real time. The method is used for safety protection during operation of the pressure regulating valve.

Description

Temporary flushing type wind tunnel pressure regulating valve control device and method with bidirectional protection function
Technical Field
The application relates to a temporary flushing type wind tunnel pressure regulating valve control device with a bidirectional protection function and a method thereof, belonging to the technical field of wind tunnel tests.
Background
Wind tunnel test is a method adopted in aerodynamic research, and provides powerful guarantee for development in the fields of aerospace, aviation and the like. The temporary flushing wind tunnel is used as a type of wind tunnel, and the flow field in the wind tunnel pipeline is controlled mainly through a pressure regulating valve, so that effective pneumatic data are obtained. The pressure regulating valve is used as a core component of the temporary flushing wind tunnel, and enough safety protection is required to be carried out in the operation process of the pressure regulating valve so as to prevent the wind tunnel test model and the wind tunnel from being damaged due to the runaway of the pressure regulating valve or other emergency situations. The safety protection requirements of the temporary flushing type wind tunnel pressure regulating valve are as follows: firstly, once an emergency situation occurs in the wind tunnel operation process, the pressure regulating valve must be rapidly turned off in a designated time, so that the air flow in the wind tunnel flow channel is rapidly stopped; secondly, in the wind tunnel operation process, the pressure regulating valve needs to be ensured to be always kept in a safe opening range, and even if a runaway state occurs, an infinite opening or an opening exceeding a safe limit range cannot be generated.
Therefore, a temporary flushing type wind tunnel pressure regulating valve control device and method with a bidirectional protection function are needed to solve the above-mentioned problems.
Disclosure of Invention
In view of this, the present application provides a control device and method for a temporary flushing type wind tunnel pressure regulating valve with a bidirectional protection function, so as to solve the problem of rapid shutdown of the temporary flushing type wind tunnel pressure regulating valve in an emergency situation and the problem of safety opening protection in the real-time control process of the pressure regulating valve.
The technical scheme of the application is realized as follows:
scheme one: a temporary flushing type wind tunnel pressure regulating valve control device with a bidirectional protection function comprises:
the hydraulic cylinder of the hydraulic device with the quick turn-off function is rigidly connected with the valve body of the pressure regulating valve, the motor-driven safety stop device is arranged in the direction of the extending end of the hydraulic cylinder, and the initial position of the motor-driven safety stop device is not collided with the extending end of the hydraulic cylinder with the maximum extension; the extending end of the hydraulic cylinder is opposite to and coaxially arranged with an ejection mechanism of the motor-driven safety stop device, and the hydraulic controller is connected with the servo controller; the hydraulic controller is used for controlling the elongation of the extending end of the hydraulic cylinder in real time, and the servo controller is used for controlling the elongation of the ejection mechanism in real time.
Further, the hydraulic device with the rapid turn-off function comprises an oil return side energy accumulator, an oil side energy accumulator, an emergency turn-off energy accumulator, a reversing valve I, a reversing valve II, a one-way valve I, a one-way valve II, an overflow valve I, an overflow valve II, an overflow valve III, an oil return side two-way cartridge valve, an oil side two-way cartridge valve, a servo valve, a hydraulic control one-way valve I, a hydraulic control one-way valve II and a displacement sensor;
the inlet and outlet of the hydraulic cylinder are respectively connected with a first hydraulic pipeline and a second hydraulic pipeline, a first control pipeline and a second control pipeline are connected in parallel between the first hydraulic pipeline and the second hydraulic pipeline, a one-way valve I and an overflow valve I are arranged in front of and behind the first control pipeline, and an overflow valve II and a one-way valve II are arranged in front of and behind the second control pipeline;
the first control pipeline is connected with an oil outlet of the oil side two-way cartridge valve through a first pipeline, an oil inlet of the oil side two-way cartridge valve is connected with an oil tank through a second pipeline, and an oil side energy accumulator and an emergency shutdown energy accumulator are arranged on the second pipeline front and back;
the second control pipeline is connected with an oil inlet of the oil return side two-way cartridge valve through a third pipeline, and an oil outlet of the oil return side two-way cartridge valve is connected with an oil tank through a fourth pipeline;
the oil return side two-way cartridge valve and the oil feeding side two-way cartridge valve are connected with the reversing valve II;
the oil feeding side of the servo valve is connected with an oil tank through a fifth pipeline, a hydraulic control one-way valve II is arranged on the fifth pipeline, two oil outlets of the servo valve are connected with a sixth pipeline, a hydraulic control one-way valve I is arranged on the sixth pipeline, and the two hydraulic control one-way valves I are respectively connected with a first hydraulic pipeline and a second hydraulic pipeline;
the hydraulic control one-way valve I and the hydraulic control one-way valve II are both connected with the reversing valve I;
an oil return port of the servo valve is connected with an oil tank through a seventh pipeline, and an oil return side energy accumulator is arranged on the seventh pipeline;
an eighth pipeline is connected between the fifth pipeline and the fourth pipeline, and an overflow valve III is arranged on the eighth pipeline;
and a displacement sensor is arranged at the extending end of the hydraulic cylinder, and signals of the displacement sensor are collected by the hydraulic controller and synchronously transmitted to the servo controller through communication connection.
Further, the shutdown speed Q of the hydraulic device with the rapid shutdown function is calculated according to the following formula:
Q=V×A/10=A×S/10t
wherein: a represents the effective working area of the hydraulic cylinder, and the unit is cm 2 V represents the hydraulic cylinder speed in m/min, S represents the hydraulic cylinder stroke in m, and t represents the off time in min.
Further, the motor-driven safety stop device comprises a base, a servo motor, a speed reducer and an ejection mechanism, wherein the base is connected with the inner wall of the wind tunnel, the speed reducer is fixed on the base and connected with the shaft end of the servo motor, and the output end of the speed reducer is connected with the ejection mechanism.
Scheme II: the temporary flushing type wind tunnel pressure regulating valve control method with the bidirectional protection function is realized by the temporary flushing type wind tunnel pressure regulating valve control device with the bidirectional protection function according to the scheme one, and comprises the following steps:
step 1: before the wind tunnel runs, the initial position of the motor-driven safety stop device is not collided with the extending end of the hydraulic cylinder with the maximum elongation, the pressure regulating valve body is in a closed state, and a pressure regulating valve ventilation gap is not formed between the pressure regulating valve body and the wall of the wind tunnel;
step 2: during the operation of the wind tunnel, according to the real-time feedback value of the displacement sensor, the motor-driven safety stop device is always a margin value of 20% of the full range of the extending end of the hydraulic cylinder;
step 3: during the operation of the wind tunnel, when the valve body of the pressure regulating valve needs to be shut off, the control reversing valve I locks the oil inlet and outlet of the servo valve through the hydraulic control one-way valve I and the hydraulic control one-way valve II, and synchronously controls the reversing valve II to enable the oil return side two-way cartridge valve and the oil side two-way cartridge valve to be conducted, hydraulic oil bypasses the servo valve to directly drive the hydraulic cylinder, and the hydraulic cylinder moves to the shut-off state of the valve body of the pressure regulating valve under the action of the oil side energy accumulator and the emergency shut-off energy accumulator;
step 4: after the valve body of the pressure regulating valve is closed, the wind tunnel stops running;
step 5: the wind tunnel stops running, and the motor-driven safety stop device returns to the initial position.
The beneficial effects of the application are as follows:
1. the hydraulic device with the rapid turn-off function is adopted to conduct turn-off protection of the pressure regulating valve, high integration level is guaranteed to the greatest extent, the protection method is simple and reliable, the rapid turn-off function of the pressure regulating valve can be achieved only by controlling a small number of parts, and the turn-off speed can also be achieved by adjusting the internal pressure of the energy accumulator.
2. The motor-driven safety stop device can complete follow-up control in a safety range, ensure the safety operation range of the pressure regulating valve, and is reliable and effective.
3. The method can ensure the safe range of the operation of the pressure regulating valve in the wind tunnel operation stage, and can rapidly shut off the pressure regulating valve in the emergency, thereby providing powerful guarantee for the safety of the wind tunnel test model and the wind tunnel.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is an overall block diagram of an embodiment of the present application;
fig. 2 is a hydraulic schematic of an embodiment of the present application.
In the figure: the hydraulic device with the quick shut-off function comprises a hydraulic device with the quick shut-off function, a 2-motor-driven safety shut-off device, a 3-hydraulic controller, a 4-servo controller, a 5-pressure regulating valve body, a 6-hydraulic cylinder, an 8-displacement sensor, a 9-base, a 10-servo motor, a 11-speed reducer, a 12-ejection mechanism, a 13-signal line, a 14-rigid support, a 15-first hydraulic pipeline, a 16-hydraulic station, a 17-pressure regulating valve vent, a 20-first control pipeline, a 21-second control pipeline, a 22-second hydraulic pipeline, a 23-first pipeline, a 24-second pipeline, a 25-third pipeline, a 26-fourth pipeline, a 27-fifth pipeline, a 28-sixth pipeline, a 29-seventh pipeline, a 30-eighth pipeline, a 101-check valve I, a 102-check valve II, a 103-overflow valve I, a 104-overflow valve II, a 105-hydraulic check valve I, a 106-check valve II, a 107-servo valve II, a 108-oil return side plug-in valve, a 109-oil return side energy accumulator, a 110-upper oil side energy accumulator, a 111-side energy accumulator, a reversing valve I, a 113-reversing valve III and a reversing valve III.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Referring to fig. 1 and 2 for illustrating the present embodiment, embodiment 1 of the present application provides a temporary flushing type wind tunnel pressure regulating valve control device with bidirectional protection function, including:
a hydraulic device 1 with a quick turn-off function, a motor-driven safety cut-off device 2, a hydraulic controller 3 and a servo controller 4; the hydraulic device 1 with the quick shut-off function comprises an oil return side energy accumulator 109, an oil side energy accumulator 110, an emergency shut-off energy accumulator 111, a reversing valve I112, a reversing valve II113, a one-way valve I101, a one-way valve II102, an overflow valve I103, an overflow valve II104, an overflow valve III115, an oil return side two-way cartridge valve 108, an oil side two-way cartridge valve 114, a hydraulic cylinder 6, a servo valve 107, a hydraulic control one-way valve I105, a hydraulic control one-way valve II106 and a displacement sensor 8; the motor-driven safety stop device 2 comprises a base 9, a servo motor 10, a speed reducer 11 and an ejection mechanism 12;
specifically: the hydraulic cylinder 6 of the hydraulic device 1 with the rapid turn-off function is rigidly connected with the valve body 5 of the pressure regulating valve through a rigid bracket 14, the motor-driven safety stop device 2 is arranged in the direction of the extending end of the hydraulic cylinder 6, and the initial position of the motor-driven safety stop device 2 is not collided with the extending end of the hydraulic cylinder 6 with the maximum extension; the extending end of the hydraulic cylinder 6 is opposite to and coaxially arranged with the ejection mechanism 12 of the motor-driven safety cut-off device 2, and the hydraulic controller 3 and the servo controller 4 are in communication connection through a signal wire 13; the hydraulic controller 3 controls the elongation of the extending end of the hydraulic cylinder 6 in real time, and the servo controller 4 controls the elongation of the ejection mechanism 12 in real time;
the inlet and outlet of the hydraulic cylinder 6 are respectively connected with a first hydraulic pipeline 15 and a second hydraulic pipeline 22, a first control pipeline 20 and a second control pipeline 21 are connected in parallel between the first hydraulic pipeline 15 and the second hydraulic pipeline 22, a one-way valve I101 and an overflow valve I103 are arranged on the first control pipeline 20 front and back, and an overflow valve II104 and a one-way valve II102 are arranged on the second control pipeline 21 front and back;
the first control pipeline 20 is connected with an oil outlet of the oil-applying side two-way cartridge valve 114 through a first pipeline 23, an oil inlet of the oil-applying side two-way cartridge valve 114 is connected with an oil tank through a second pipeline 24, and an oil-applying side energy accumulator 110 and an emergency shut-off energy accumulator 111 are arranged on the second pipeline 24 front and back;
the second control pipeline 21 is connected with an oil inlet of the oil return side two-way cartridge valve 108 through a third pipeline 25, and an oil outlet of the oil return side two-way cartridge valve 108 is connected with an oil tank through a fourth pipeline 26;
the oil return side two-way cartridge valve 108 and the oil feeding side two-way cartridge valve 114 are connected with the reversing valve II 113;
the oil feeding side of the servo valve 107 is connected with an oil tank through a fifth pipeline 27, a hydraulic control one-way valve II106 is arranged on the fifth pipeline 27, two oil outlets of the servo valve 107 are connected with a sixth pipeline 28, a hydraulic control one-way valve I105 is arranged on the sixth pipeline 28, and the two hydraulic control one-way valves I105 are respectively connected with a first hydraulic pipeline 15 and a second hydraulic pipeline 22;
the hydraulic control one-way valve I105 and the hydraulic control one-way valve II106 are connected with the reversing valve I112;
the oil return port of the servo valve 107 is connected with an oil tank through a seventh pipeline 29, and an oil return side accumulator 109 is arranged on the seventh pipeline 29;
an eighth pipeline 30 is connected between the fifth pipeline 27 and the fourth pipeline 26, and an overflow valve III115 is arranged on the eighth pipeline 30;
the hydraulic cylinder 6 is provided with a displacement sensor 8 at the extending end, and signals of the displacement sensor 8 are collected by the hydraulic controller 3 and synchronously transmitted to the servo controller 4 through communication connection.
More specifically, the shut-off speed Q of the hydraulic device 1 with a quick shut-off function is calculated according to the following equation:
Q=V×A/10=A×S/10t
wherein: a represents the effective working area of the hydraulic cylinder, and the unit is cm 2 V represents the hydraulic cylinder speed in m/min, S represents the hydraulic cylinder stroke in m, and t represents the off time in min.
Example 2
Referring to fig. 1 and 2 for illustrating the present embodiment, embodiment 2 of the present application provides a temporary flushing type wind tunnel pressure regulating valve control method with bidirectional protection function, which is implemented by the temporary flushing type wind tunnel pressure regulating valve control device with bidirectional protection function according to embodiment 1, and includes:
step 1: before the wind tunnel runs, the initial position of the motor-driven safety stop device 2 does not collide with the extending end of the hydraulic cylinder 6 with the maximum extension, the pressure regulating valve body 5 is in a closed state, and a pressure regulating valve ventilation gap 17 is not formed between the pressure regulating valve body 5 and the wall of the wind tunnel;
step 2: during the operation of the wind tunnel, according to the real-time feedback value of the displacement sensor 8, the motor-driven safety stop device is always a margin value of 20% of the full range of the extending end of the hydraulic cylinder 6;
step 3: during wind tunnel operation, when the pressure regulating valve body 5 needs to be shut down, the control reversing valve I112 locks the oil inlet and outlet of the servo valve 107 through the hydraulic control one-way valve I105 and the hydraulic control one-way valve II106, and synchronously controls the reversing valve II113 to conduct the oil return side two-way cartridge valve 108 and the oil side two-way cartridge valve 114, hydraulic oil bypasses the servo valve 107 to directly drive the hydraulic cylinder 6, and the hydraulic cylinder 6 moves to a shut-down state of the pressure regulating valve body 5 under the action of the oil side energy accumulator 110 and the emergency shut-down energy accumulator 111;
step 4: after the pressure regulating valve body 5 is closed, the wind tunnel stops running;
step 5: the wind tunnel stops running and the motor-driven safety shut-off device 2 returns to the initial position.
The control device and the method for the temporary flushing type wind tunnel pressure regulating valve with the bidirectional protection function provide bidirectional protection for the operation of the temporary flushing type wind tunnel pressure regulating valve, can ensure the high-precision control of the pressure regulating valve in two directions, meet the use requirement of the temporary flushing type wind tunnel test, and improve the operation reliability.
The foregoing embodiments have further been described in detail for the purpose, technical solutions and advantageous effects of the present application, and it should be understood that the foregoing embodiments are merely examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the scope of protection of the present application.

Claims (5)

1. The temporary flushing type wind tunnel pressure regulating valve control device with the bidirectional protection function is characterized by comprising:
the hydraulic device (1) with the quick turn-off function, the motor-driven safety cut-off device (2), the hydraulic controller (3) and the servo controller (4), wherein a hydraulic cylinder (6) of the hydraulic device (1) with the quick turn-off function is rigidly connected with a valve body (5) of the pressure regulating valve, the motor-driven safety cut-off device (2) is arranged in the direction of the extending end of the hydraulic cylinder (6), and the initial position of the motor-driven safety cut-off device (2) is not collided with the extending end of the hydraulic cylinder (6) with the maximum extension; the extending end of the hydraulic cylinder (6) is opposite to and coaxially arranged with an ejection mechanism (12) of the motor-driven safety stop device (2), and the hydraulic controller (3) is connected with the servo controller (4); the hydraulic controller (3) is used for controlling the elongation of the extending end of the hydraulic cylinder (6) in real time, and the servo controller (4) is used for controlling the elongation of the ejection mechanism (12) in real time.
2. The control device for a temporary flushing type wind tunnel pressure regulating valve with a bidirectional protection function according to claim 1, wherein the hydraulic device (1) with a quick shut-off function comprises an oil return side energy accumulator (109), an oil application side energy accumulator (110), an emergency shut-off energy accumulator (111), a reversing valve I (112), a reversing valve II (113), a one-way valve I (101), a one-way valve II (102), an overflow valve I (103), an overflow valve II (104), an overflow valve III (115), an oil return side two-way cartridge valve (108), an oil application side two-way cartridge valve (114), a servo valve (107), a hydraulic control one-way valve I (105), a hydraulic control one-way valve II (106) and a displacement sensor (8);
the inlet and outlet of the hydraulic cylinder (6) are respectively connected with a first hydraulic pipeline (15) and a second hydraulic pipeline (22), a first control pipeline (20) and a second control pipeline (21) are connected in parallel between the first hydraulic pipeline (15) and the second hydraulic pipeline (22), a one-way valve I (101) and an overflow valve I (103) are arranged on the first control pipeline (20) front and back, and an overflow valve II (104) and a one-way valve II (102) are arranged on the second control pipeline (21) front and back;
the first control pipeline (20) is connected with an oil outlet of the oil-side two-way cartridge valve (114) through a first pipeline (23), an oil inlet of the oil-side two-way cartridge valve (114) is connected with an oil tank through a second pipeline (24), and an oil-side energy accumulator (110) and an emergency shut-off energy accumulator (111) are arranged on the second pipeline (24) front and back;
the second control pipeline (21) is connected with an oil inlet of the oil return side two-way cartridge valve (108) through a third pipeline (25), and an oil outlet of the oil return side two-way cartridge valve (108) is connected with an oil tank through a fourth pipeline (26);
the oil return side two-way cartridge valve (108) and the oil feeding side two-way cartridge valve (114) are connected with the reversing valve II (113);
the oil feeding side of the servo valve (107) is connected with an oil tank through a fifth pipeline (27), a hydraulic control one-way valve II (106) is arranged on the fifth pipeline (27), two oil outlets of the servo valve (107) are connected with a sixth pipeline (28), a hydraulic control one-way valve I (105) is arranged on the sixth pipeline (28), and the two hydraulic control one-way valves I (105) are respectively connected with a first hydraulic pipeline (15) and a second hydraulic pipeline (22);
the hydraulic control one-way valve I (105) and the hydraulic control one-way valve II (106) are connected with the reversing valve I (112);
an oil return port of the servo valve (107) is connected with an oil tank through a seventh pipeline (29), and an oil return side energy accumulator (109) is arranged on the seventh pipeline (29);
an eighth pipeline (30) is connected between the fifth pipeline (27) and the fourth pipeline (26), and an overflow valve III (115) is arranged on the eighth pipeline (30);
the hydraulic cylinder (6) is provided with a displacement sensor (8) at the extending end, and signals of the displacement sensor (8) are collected by the hydraulic controller (3) and synchronously transmitted to the servo controller (4) through communication connection.
3. The control device for a temporary flushing wind tunnel pressure regulating valve with a bidirectional protection function according to claim 2, wherein the shut-off speed Q of the hydraulic device (1) with a quick shut-off function is calculated according to the following formula:
Q=V×A/10=A×S/10t
wherein: a represents the effective working area of the hydraulic cylinder, and the unit is cm 2 V represents the hydraulic cylinder speed in m/min, S represents the hydraulic cylinder stroke in m, and t represents the off time in min.
4. The control device for a temporary flushing type wind tunnel pressure regulating valve with a bidirectional protection function according to claim 3, wherein the motor-driven safety stop device (2) comprises a base (9), a servo motor (10), a speed reducer (11) and an ejection mechanism (12), the base (9) is connected with the inner wall of the wind tunnel, the speed reducer (11) is fixed on the base (9) and is connected with the shaft end of the servo motor (10), and the output end of the speed reducer (11) is connected with the ejection mechanism (12).
5. The control method of the temporary flushing type wind tunnel pressure regulating valve with the bidirectional protection function is characterized in that the control method is realized by the temporary flushing type wind tunnel pressure regulating valve control device with the bidirectional protection function according to any one of claims 2 to 4, and comprises the following steps:
step 1: before the wind tunnel runs, the initial position of the motor-driven safety stop device (2) does not collide with the extending end of the hydraulic cylinder (6) with the maximum extension, the pressure regulating valve body (5) is in a closed state, and a pressure regulating valve ventilation gap (17) is not formed between the pressure regulating valve body (5) and the wall of the wind tunnel;
step 2: during the operation of the wind tunnel, according to the real-time feedback value of the displacement sensor (8), the motor-driven safety stop device (2) is always a margin value of 20% of the full range of the extending end of the hydraulic cylinder (6);
step 3: during the operation of the wind tunnel, when the pressure regulating valve body (5) needs to be shut off, the control reversing valve I (112) locks the oil inlet and outlet of the servo valve (107) through the hydraulic control one-way valve I (105) and the hydraulic control one-way valve II (106), and synchronously controls the reversing valve II (113) to enable the oil return side two-way cartridge valve (108) and the oil side two-way cartridge valve (114) to be conducted, hydraulic oil bypasses the servo valve (107) to directly drive the hydraulic cylinder (6), and the hydraulic cylinder (6) is moved to the shut-off state of the pressure regulating valve body (5) under the actions of the oil side energy accumulator (110) and the emergency shut-off energy accumulator (111);
step 4: after the pressure regulating valve body (5) is closed, the wind tunnel stops running;
step 5: the wind tunnel stops running, and the motor-driven safety stop device (2) returns to the initial position.
CN202310598983.2A 2023-05-25 2023-05-25 Temporary flushing type wind tunnel pressure regulating valve control device and method with bidirectional protection function Active CN116336247B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB707734A (en) * 1949-04-01 1954-04-21 Fiat Spa A hydraulic governor or regulator, more particularly suitable for adjusting the delivery of fuel injection pumps of compression ignition engines
DE4037848A1 (en) * 1990-11-28 1992-06-04 Eckehart Schulze HYDRAULICALLY DRIVEN MACHINE WITH TWO DRIVE CYLINDERS
JPH04266604A (en) * 1991-02-19 1992-09-22 Kobe Steel Ltd Drive control unit for hydraulic cylinder
JPH06307975A (en) * 1993-04-23 1994-11-04 Nippon Kagaku Kogyo Kk Wind tunnel system
WO2019148547A1 (en) * 2018-02-02 2019-08-08 东北大学 Large-sized deep cavern group three-dimensional physical model test system and method
CN110702361A (en) * 2019-11-14 2020-01-17 中国航空工业集团公司沈阳空气动力研究所 Flow field accurate control system and control method of direct-current temporary-impulse type transonic wind tunnel
CN112483499A (en) * 2020-12-09 2021-03-12 中国空气动力研究与发展中心高速空气动力研究所 Multifunctional movable oil source system for guaranteeing wind tunnel hydraulic equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB707734A (en) * 1949-04-01 1954-04-21 Fiat Spa A hydraulic governor or regulator, more particularly suitable for adjusting the delivery of fuel injection pumps of compression ignition engines
DE4037848A1 (en) * 1990-11-28 1992-06-04 Eckehart Schulze HYDRAULICALLY DRIVEN MACHINE WITH TWO DRIVE CYLINDERS
JPH04266604A (en) * 1991-02-19 1992-09-22 Kobe Steel Ltd Drive control unit for hydraulic cylinder
JPH06307975A (en) * 1993-04-23 1994-11-04 Nippon Kagaku Kogyo Kk Wind tunnel system
WO2019148547A1 (en) * 2018-02-02 2019-08-08 东北大学 Large-sized deep cavern group three-dimensional physical model test system and method
CN110702361A (en) * 2019-11-14 2020-01-17 中国航空工业集团公司沈阳空气动力研究所 Flow field accurate control system and control method of direct-current temporary-impulse type transonic wind tunnel
CN112483499A (en) * 2020-12-09 2021-03-12 中国空气动力研究与发展中心高速空气动力研究所 Multifunctional movable oil source system for guaranteeing wind tunnel hydraulic equipment

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