Environment self-adaptive adjustment particle separator experimental device and experimental method

Abstract

The invention provides an environment self-adaptive adjustment particle separator experimental device and experimental method. The device comprises a particle separator, an electrostatic induction probe, a main channel sand dust collecting barrel, a bypass channel sand dust collecting barrel, a shunt adjusting mechanism, a bypass flow speed-adjustable air blower, a main flow induced draft fan and a support. The main flow induced draft fan simulates the working state of an engine in a suction mode, the bypass flow speed-adjustable air blower simulates scavenging in a suction mode to adjust different scavenging ratios, the diverter adjusting mechanism adjusts different deflection angles of the diverter, and different working modes are switched. According to the environment self-adaptive particle separation system, the electrostatic induction probe at the inlet of the particle separator is used for monitoring the sand and dust concentration in the flight environment, and the rotating speed of the shunt or the bypass flow speed-adjustable air blower is adjusted according to the severity of the sand and dust environment so as to adapt to different flight environments. The environment self-adaptive particle separation system is easy to realize in structure, and has lower requirements on an experiment site and an air source.

Description

Technical Field

[0001] This invention relates to the field of air intake devices for helicopter turboshaft engines, and more particularly to the field of integrated inertial particle separators. Background Technology

[0002] The flight characteristics of helicopters dictate that they typically fly at low altitudes and low speeds, and require takeoff and landing in unprepared or remote areas. When used in sparsely vegetated deserts or arid environments with exposed soil, ground dust particles are blown up and suspended in the air by surface winds and rotor downwash. Some of these particles are ingested by the engine, reducing its lifespan. To address the dust protection issue of turboshaft engines, several particulate protection devices have been developed, one of which is the inertial particle separator (IPS). Compared to similar devices such as inertial barrier filters (IBF) and cyclone separators (VTS), IPS offers significant advantages in terms of lightweight construction and low total pressure loss, leading to its widespread application in related fields. However, traditional IPS suffer from a fixed configuration, meaning they are always in a dust-separating state once installed. To ensure effective sand and dust separation, traditional IPS (Insulated Power System) flow channels are often designed with a high curvature structure, relying on sharp airflow turns to achieve separation. However, sharp turns generate a large adverse pressure gradient, leading to flow separation in the leeward region of the separator bulge, ultimately resulting in greater total pressure loss. It is worth noting that once a helicopter climbs to a certain altitude, the environment no longer poses a sand and dust threat. At this point, the aforementioned intake losses are not only unnecessary but also result in a waste of engine power. Therefore, an environment-adaptive particle separator is needed to resolve this contradiction and provide a reliable intake solution for future high-speed helicopters. Furthermore, a corresponding experimental setup needs to be designed to verify the feasibility of the particle separator design. Simultaneously, this experimental setup should be as simple in structure as possible, and easy to operate and maintain. Summary of the Invention

[0003] To address the above issues, this invention provides an environmentally adaptive particle separator experimental device, which has a simple structure, small size, low requirements for experimental site and gas supply capacity, and is easy to operate and maintain.

[0004] The present invention also provides an experimental method using the above-described particle separator experimental apparatus.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An environmentally adaptive particle separator experimental apparatus includes a particle separator, a bypass outlet electrostatic induction probe, an inlet electrostatic induction probe, a bypass channel sand and dust collection bin, a bypass channel adjustable speed blower connecting pipe, a bypass adjustable speed blower, a main channel collection bin connecting pipe, a main channel sand and dust collection bin, a main channel induced draft fan connecting pipe, a main channel induced draft fan, and a sandblaster; the particle separator has an inlet, a main channel, and a bypass channel, the main channel and bypass channel being independent of each other; the outlet of the main channel is connected to the inlet of the main channel sand and dust collection bin, and the outlet of the bypass channel is connected to the inlet of the bypass channel sand and dust collection bin; the main channel... The outlet of the sand and dust collection bin is connected to the main flow fan, and the outlet of the bypass sand and dust collection bin is connected to the bypass adjustable speed blower. The main flow fan is used to simulate engine operation by drawing in airflow. The particle separator is equipped with a rotatable diverter, the front end of which can swing to change the inlet area of ​​the main flow channel and the inlet area of ​​the bypass channel. The inlet electrostatic induction probe is installed inside near the inlet of the particle separator to monitor the sand and dust concentration at the inlet. The bypass outlet electrostatic induction probe is installed inside near the bypass outlet of the particle separator to monitor the sand and dust concentration at the bypass outlet.

[0007] Furthermore, the particle separator is placed horizontally on the support on the ground. After the outlet of the main channel of the particle separator, the main channel transition section, the main channel collection bucket connecting pipe, the main channel sand and dust collection bucket, the main channel induced draft fan connecting pipe, and the main channel induced draft fan are connected in sequence. After the outlet of the bypass channel, the bypass channel transition section, the bypass channel collection bucket connecting pipe, the bypass channel sand and dust collection bucket, the bypass channel adjustable speed blower connecting pipe, and the bypass adjustable speed blower are connected in sequence.

[0008] Furthermore, a sandblaster is arranged far in front of the particle separator inlet to spray out sand and dust particles from the sand storage tank under pressure, simulating a sand and dust environment at the particle separator inlet.

[0009] Furthermore, the angle between the front and rear sections of the splitter is a minimum of 0° and a maximum of 28°; when the angle is 4°, the motor displacement sensor reads 0.

[0010] Furthermore, the filter material used in both the main channel and bypass channel sand and dust collection bins is ultra-high molecular weight non-woven fabric; the bypass adjustable speed blower has an adjustable speed, and the relationship between the bypass adjustable speed blower speed and flow rate is as follows: ,in The value is the outlet mass flow rate of the adjustable speed blower, in kg / s; N is the blower speed, in rpm.

[0011] Furthermore, the scavenging ratio of the particle separator is not less than 5% and not more than 50%, and the scavenging ratio is the ratio of the bypass mass flow rate to the mainstream mass flow rate. Under the reference operating conditions of the particle separator, the angle between the front and rear sections of the splitter is 4° and the scavenging ratio is 18.5%, which is used to simulate the typical operating conditions of a turboshaft engine.

[0012] Furthermore, the electrostatic probe outputs a current signal, and the maximum measurable dust concentration C is 10000 mg / m³. 3 The relationship between current I and concentration C is: The electrostatic probe sampling frequency is 1Hz.

[0013] Furthermore, the bypass collection tank connecting pipe, the bypass adjustable speed blower connecting pipe, the main collection tank connecting pipe, and the main induced draft fan connecting pipe are all made of 45 steel, and the inside of the pipes has a smooth transition, that is, the inner diameter of the transition section is consistent with the inner diameter of each connecting pipe.

[0014] Furthermore, when the angle of the splitter is 4°, it is the baseline mode of the particle separator; when the angle of the splitter is greater than 4° and less than 20°, it is the high total pressure recovery mode; when the angle is 20°, it reaches the optimal aerodynamic mode; when the angle of the splitter is greater than 0° and less than 4°, the particle separator is in the high sand separation efficiency mode, at which time the sand and dust separation efficiency is improved compared with the baseline mode; when the angle is 0°, it reaches the optimal sand separation mode, at which time the sand and dust separation efficiency of the particle separator is the maximum.

[0015] Beneficial Effects: The particle separator experimental device proposed in this invention can change its profile according to different sand and dust environments, continuously adjust the scavenging ratio, and autonomously increase the scavenging ratio and switch the profile to a high sand separation efficiency working mode according to the severity of the sand and dust environment. Furthermore, when not encountering a sand and dust environment, it can autonomously switch to a high total pressure recovery working mode, balancing aerodynamic performance and sand and dust separation performance. This particle separator provides a highly efficient air intake protection device for high-speed helicopter power units (such as shaft fan engines). Moreover, the environmentally adaptive particle separator experimental device proposed in this invention can simulate the autonomous adjustment function of an environmentally adaptive particle separator in different sand and dust environments, providing a practical experimental device for high-speed helicopter power units.

[0016] The experimental method of the particle separator experimental device provided by the present invention can adopt the following technical solution:

[0017] When 0 ≤ inlet dust concentration ≤ 53 mg / m³ 3 At this time, the control unit outputs a speed adjustment signal to the bypass adjustable speed blower. As the inlet sand and dust concentration decreases to 0, the particle separation system switches from the baseline operating mode to the high total pressure recovery mode, adjusting the distributor rotation until the optimal pneumatic mode is reached. The bypass adjustable speed blower speed decreases until the scavenging ratio reaches 5%. When 54 ≤ inlet sand and dust concentration ≤ 2000mg / m³ 3 At this time, the distributor is in the reference operating mode position and remains stationary. The bypass variable speed blower increases its speed, and the scavenging ratio increases. When the inlet sand and dust concentration reaches 2000 mg / m³, 3The scavenging ratio is adjusted to 30%; when 2001≤inlet dust concentration≤ 4000mg / m³ 3 At this time, the bypass variable speed blower speed remains constant, and the distributor rotates to the high sand separation efficiency mode. When the sand and dust concentration reaches 4000 mg / m³, 3 The flow divider rotates to the optimal sand separation mode; when 4001 ≤ inlet sand and dust concentration ≤ 10000 mg / m³ 3 At this time, keep the distributor in the optimal sand distribution mode, and continue to increase the speed of the adjustable speed blower until the maximum set speed of the adjustable speed blower is reached. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an experimental device for an environmentally adaptive particle separator capable of sensing sand and dust concentration according to the present invention.

[0019] Figure 2 This is a schematic diagram of the sandblasting device in this invention;

[0020] Figure 3 This is a schematic diagram showing the angle between the rotatable splitter and the fixed section of the splitter in this invention;

[0021] Figure 4 This is a schematic diagram of the various working modes of the environmental adaptive particle separation system in this invention;

[0022] Figure 5 This is the real-time concentration curve output by the control system in this invention;

[0023] Figure 6 It is the curve of the bypass adjustable speed blower speed versus flow rate;

[0024] Figure 7 It is a conversion curve between the output electrical signal of the electrostatic probe and the concentration of sand and dust;

[0025] Figure 8 This is the installation location of the electrostatic induction probe;

[0026] Figure 9 This is a schematic diagram of a high-speed helicopter equipped with an environment-adaptive particle separator under different flight environments;

[0027] Figure 10 These are the status monitoring curves of each component during the environmental adaptive particle separator test. Detailed Implementation

[0028] This invention discloses a particle separator experimental device, comprising a particle separator 1, a bypass outlet electrostatic induction probe 2, an inlet electrostatic induction probe 3, a diverter adjustment mechanism 4, a bypass channel transition section 5, a main channel transition section 6, a bypass channel collection bucket connecting pipe 7, a bypass channel sand and dust collection bucket 8, a bypass channel adjustable speed blower connecting pipe 9, a bypass adjustable speed blower 10, a main channel collection bucket connecting pipe 11, a main channel sand and dust collection bucket 12, a main channel induced draft fan connecting pipe 13, a main channel induced draft fan 14, a support 15, and a sandblaster 16.

[0029] The particle separator 1 is equipped with an inlet electrostatic induction probe 3 and a bypass outlet electrostatic induction probe 2. The inlet electrostatic induction probe 3 is used to monitor the sand and dust concentration at the inlet, and the bypass outlet electrostatic induction probe 2 is used to monitor the sand and dust concentration at the bypass outlet.

[0030] The diverter adjustment mechanism 4 includes a push rod with a sliding groove and a through-type stepper motor with a screw that can move linearly up and down. The structure of the particle separator 1 and the diverter adjustment mechanism 4 used to adjust the swing angle of the diverter in the particle separator 1 is prior art, as detailed in the specific embodiments and appendices of the specification in CN120800777A. Figure 2 To be continued Figure 5 The particle separator structure is the same as that in this embodiment, so the structure and adjustment method of the particle separator 1 and the diverter adjustment mechanism 4 will not be described again here.

[0031] The environmentally adaptive particle separation system consists of two channels: a main channel and a side channel. The main channel is drawn in by a main channel induced draft fan 14, simulating engine operation. The side channel is simulated by a side channel adjustable speed blower 10, which can control the flow rate of the side channel scavenging air by adjusting its speed. The particle separator is placed horizontally on the ground on a support 15. After the outlet of the main channel of the particle separator, it is connected in sequence to the main channel transition section 6, the main channel collection tank connecting pipe 11, the main channel sand and dust collection tank 12, the main channel induced draft fan connecting pipe 13, and the main channel induced draft fan 14. After the outlet of the side channel, it is connected in sequence to the side channel transition section 5, the side channel collection tank connecting pipe 7, the side channel sand and dust collection tank 8, the side channel adjustable speed blower connecting pipe 9, and the side channel adjustable speed blower 10.

[0032] The detailed implementation steps of the experimental apparatus designed using the method of this invention are described below. Please refer to Figures 1 to 12. Figure 9 As shown, the front section of the splitter in the splitter adjustment mechanism 4 can rotate around the rotation center on the rear section of the splitter, changing different angles to switch different operating modes to adapt to different flight conditions. Please refer to the splitter profile for different operating modes. Figure 4 As shown, please refer to the definition of the splitter rotation angle. Figure 3Point A is the center of the slider connecting the splitter and the push rod, point B is the hinge center, point C is the intersection of the perpendicular line from point A to the horizontal line, the angle between AB and CB is the rotation angle of the splitter, and the length of AC is the stroke of the stepper motor screw. The included angle in the reference working mode of the particle separation system is 4°, 0° is the optimal sand separation mode, 18° is the optimal aerodynamic mode, the included angle range of 0° to 4° is the high sand separation efficiency mode, and the range of 4° to 18° is the high total pressure recovery mode. Different working modes can be switched according to different flight environments.

[0033] Please refer to the schematic diagram of this environmental adaptive particle separation system. Figure 1 The system consists of an adjustable particle separator, an electrostatic probe, a control unit, a PLC, a sand and dust filter, an adjustable speed blower, and an induced draft fan. The electrostatic probe at the inlet monitors the ambient sand and dust concentration and outputs the concentration signal to the control unit. The control unit can monitor the sand and dust concentration in real time and output a concentration curve, as shown in the figure. Figure 5 As shown, a concentration probe is simultaneously placed at the bypass outlet to monitor the bypass sand and dust concentration. If the bypass sand and dust concentration increases compared to before adjustment, the adjustment is considered effective, and the sand separation capacity of the particle separation system is improved. The control unit controls the adjustment mechanism of the flow divider and the adjustable speed blower. The adjustable speed blower's speed is adjusted via PLC. The induced draft fan simulates engine operation, maintaining maximum induced draft power during testing. To avoid the influence of sand and dust particles on the fan, sand and dust filter barrels are installed before each fan. The filter barrels contain ultra-high molecular weight non-woven fabric filter elements to filter sand and dust particles with a diameter greater than 1 micrometer. The adjustment logic is: when 0 ≤ inlet sand and dust concentration ≤ 53mg / m³ 3 At this time, the control host outputs adjustment signals to the bypass adjustable speed blower 10 and the distributor adjustment mechanism 4. As the sand and dust concentration decreases to 0, the particle separation system switches from the reference working mode to the high total pressure recovery mode. The stepper motor screw moves upward, and the distributor rotates clockwise until the optimal pneumatic mode is reached. The speed of the bypass adjustable speed blower 10 decreases until the scavenging ratio is 5%. When 54≤inlet sand and dust concentration≤ 2000mg / m³ 3 At this time, the diverter is in the reference operating mode position and remains stationary. The control unit outputs an adjustment signal to the bypass adjustable speed blower 10 to increase the speed. When the sand and dust concentration reaches 2000 mg / m³, 3 The scavenging ratio is adjusted to 30%; when 2001≤inlet dust concentration≤ 4000mg / m³ 3 At this time, the bypass variable speed blower 10 remains unchanged, the control host outputs an adjustment signal to the distributor adjustment mechanism 4, the stepper motor screw moves downward to make the distributor rotate counterclockwise, switching to the high sand separation efficiency mode. When the sand and dust concentration reaches 4000 mg / m³, 3The flow divider rotates to the optimal sand separation mode; when 4001 ≤ inlet sand and dust concentration ≤ 10000 mg / m³ 3 At this time, keep the distributor in the optimal sand-dividing mode, and control the main unit to output an adjustment signal to the bypass adjustable speed blower 10 to continue increasing the speed until the maximum set speed is reached.

[0034] For the conversion relationship between the rotational speed and outlet mass flow rate of the bypass adjustable speed blower 10, please refer to [link / reference needed]. Figure 6 In actual use, the bypass outlet flow rate is determined based on the scavenging ratio, and the corresponding rotational speed is calculated accordingly. For the relationship between the electrostatic induction probe output signal and concentration, please refer to [link to relevant documentation]. Figure 7 After sand and dust particles are drawn into the particle separation system, they rub against the electrostatic induction probes, generating an electrical signal. This signal is amplified and output to the control unit, where it is converted into a concentration signal. Two electrostatic probes are installed in the particle separation system; their installation locations are detailed in the documentation. Figure 8 One electrostatic probe 3 is installed 80 mm from the inlet of the particle separation system to monitor the concentration of sand and dust in the environment, and another electrostatic probe 2 is installed 40 mm from the bypass outlet to monitor the effect of adaptive adjustment. When encountering a sand and dust environment, the readings of both probes increase. However, since not all sand and dust particles enter the bypass, the reading of the bypass electrostatic probe 2 will be less than the reading of the inlet electrostatic probe 3. In addition, after the particle separation system makes corresponding adjustments when encountering a sand and dust environment, the reading of the bypass electrostatic probe 2 will increase, but it will still not be greater than the reading of the inlet electrostatic probe 3.

[0035] The following describes the detailed implementation steps of the environmental adaptive particle separation system designed using the method of this invention. Please refer to [link / reference needed]. Figure 9 A high-speed helicopter equipped with an environmentally adaptive particle separation system is flying at low altitude. At this time, the dust concentration particle separation system is in baseline mode. As the helicopter gradually decreases its altitude, the ambient dust concentration gradually increases under the influence of the downwash flow. At this point, the system adjusts accordingly based on the ambient dust concentration monitored by the inlet particulate matter detection system, increasing the speed of the adjustable-speed blower and adjusting the distributor to a high-efficiency sand separation mode to improve sand separation efficiency. Upon landing, the dust concentration reaches its maximum, at which point the particle separation system switches to the optimal sand separation mode. As the helicopter continues to increase its altitude, the dust concentration gradually decreases until it reaches zero. At this point, the speed of the adjustable-speed blower is reduced, and the distributor switches to a high total pressure recovery mode to reduce the total pressure loss of the particle separation system. When the ambient dust concentration reaches zero, the distributor adjusts to the optimal aerodynamic mode, and the speed of the adjustable-speed blower is reduced to its minimum. Please refer to the status curves of each component monitored by the control unit during this process. Figure 10 , Figure 10The parameters represented by the vertical axis of the curve from left to right are: inlet sand and dust concentration, adjustable speed blower speed, stepper motor displacement feedback, and the percentage of sandblasting pressure to the maximum sandblasting pressure. As can be seen from the curve, sandblasting begins at the 10th second of the test, with the sandblasting pressure at 50% of the maximum sandblasting pressure. The sand and dust are sprayed into the particle separator and collide with the environmental sensing probe at the inlet. The sand and dust particles rub against the sensing part of the probe, generating static electricity. The electrical signal is amplified by the signal amplifier inside the probe and converted into a concentration signal, thereby sensing the sand and dust concentration in the environment. Upon sensing a change in the ambient dust concentration, the probe outputs a concentration signal to the control unit. The control unit determines that a dusty environment has been encountered and sends an adjustment command to the diverter deflection mechanism, causing the diverter to switch from the 25.38mm position to the -5.38mm position, i.e., switching from low flow loss mode to high sand separation efficiency mode. At the same time, the bypass blower speed is increased to 8000rpm, increasing the scavenging ratio of the particle separator and increasing the sand separation efficiency. When sandblasting stops, the probe senses a decrease in the ambient dust concentration. When it drops to the threshold (concentration less than 100mg / m3), the control unit determines that no dusty environment has been encountered. At this time, the diverter switches back from the -5.38mm position to the 25.38mm position, and the particle separator switches back from high sand separation efficiency mode to low flow loss mode. At the same time, the speed-adjustable blower speed is reduced to 2000rpm, the scavenging ratio is reduced, and the total pressure recovery coefficient of the particle separator is increased.

[0036] Furthermore, there are many specific methods and approaches to implement this invention, and the above description is only a preferred embodiment of this invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. An experimental apparatus for an environmentally adaptive particle separator, characterized in that: Includes a particle separator (1), a bypass outlet electrostatic induction probe (2), an inlet electrostatic induction probe (3), a bypass channel sand and dust collection bucket (8), a bypass channel adjustable speed blower connecting pipe (9), a bypass adjustable speed blower (10), a main channel collection bucket connecting pipe (11), a main channel sand and dust collection bucket (12), a main channel induced draft fan connecting pipe (13), a main channel induced draft fan (14), and a sandblaster (16); The particle separator (1) has an inlet, a main channel (17) and a bypass channel (18), which are independent of each other. The outlet of the main channel is connected to the inlet of the main channel sand and dust collection bucket (12), and the outlet of the bypass channel is connected to the inlet of the bypass channel sand and dust collection bucket (8). The outlet of the main channel sand and dust collection bucket (12) is connected to the main channel induced draft fan (14), and the outlet of the bypass channel sand and dust collection bucket (8) is connected to the bypass adjustable speed blower (10). The main channel induced draft fan (14) is used to simulate engine operation by drawing airflow. The particle separator (1) is equipped with a rotatable flow divider (16), and the front end of the rotatable flow divider (9) can swing to change the inlet area of ​​the main channel and the inlet area of ​​the bypass channel. The inlet electrostatic induction probe (3) is installed inside the particle separator (1) near the inlet to monitor the sand and dust concentration at the inlet; the bypass outlet electrostatic induction probe (2) is installed inside the particle separator (1) near the bypass outlet to monitor the sand and dust concentration at the bypass outlet.

2. The particle separator experimental apparatus according to claim 1, characterized in that: The particle separator is placed horizontally on the support (15) on the ground. After the outlet of the main channel (17) of the particle separator, it is connected in sequence to the main channel transition section (6), the main channel collection bucket connecting pipe (11), the main channel sand and dust collection bucket (12), the main channel induced draft fan connecting pipe (13), and the main channel induced draft fan. (14) After the outlet of the bypass channel (18), the bypass channel transfer section (5), the bypass channel collection bucket connecting pipe (7), the bypass channel sand and dust collection bucket (8), the bypass channel adjustable speed blower connecting pipe (9), and the bypass adjustable speed blower (10) are connected in sequence.

3. The particle separator experimental apparatus according to claim 1, wherein a sandblaster (16) is arranged far in front of the particle separator inlet, and the sand particles in the sand storage tank are sprayed out by pressurization to simulate a sand and dust environment at the particle separator inlet.

4. The particle separator experimental apparatus according to claim 1, characterized in that: The angle between the front and rear sections of the splitter is a minimum of 0° and a maximum of 28°; when the angle is 4°, the motor displacement sensor reads 0.

5. The particle separator experimental apparatus according to claim 1, characterized in that: The filter material used in the main channel sand and dust collection bin (12) and the side channel sand and dust collection bin (8) is ultra-high molecular weight non-woven fabric; The bypass adjustable speed blower (10) has an adjustable speed. The relationship between the speed and flow rate of the bypass adjustable speed blower (10) is as follows: ,in The value is the outlet mass flow rate of the adjustable speed blower, in kg / s; N is the blower speed, in rpm.

6. The particle separator experimental apparatus according to claim 1, characterized in that: The scavenging ratio of the particle separator is not less than 5% and not more than 50%. The scavenging ratio is the ratio of the bypass mass flow rate to the mainstream mass flow rate. Under the reference working conditions of the particle separator, the angle between the front and rear sections of the splitter is 4° and the scavenging ratio is 18.5%, which is used to simulate the typical working conditions of a turboshaft engine.

7. The particle separator experimental apparatus according to claim 1, characterized in that: The electrostatic probe outputs a current signal, and the maximum measurable dust concentration C is 10000 mg / m³. 3 The relationship between current I and concentration C is: The electrostatic probe sampling frequency is 1Hz.

8. The particle separator experimental apparatus according to claim 1, characterized in that: The bypass collection tank connecting pipe (7), the bypass adjustable speed blower connecting pipe (9), the main collection tank connecting pipe (11), and the main induced draft fan connecting pipe (13) are made of 45 steel, and the inside of the pipes is smoothly transitioned, that is, the inner diameter of the transition section is consistent with the inner diameter of each connecting pipe.

9. The particle separator experimental apparatus according to claim 1, characterized in that: When the angle of the splitter is 4°, it is the baseline mode of the particle separator. When the angle of the splitter is greater than 4° and less than 20°, it is the high total pressure recovery mode. When the angle is 20°, the optimal aerodynamic mode is reached. When the angle of the splitter is greater than 0° and less than 4°, the particle separator is in the high sand separation efficiency mode. At this time, the sand and dust separation efficiency is improved compared with the baseline mode. When the angle is 0°, the optimal sand separation mode is reached, at which time the sand and dust separation efficiency of the particle separator is the maximum.

10. An experimental method using the particle separator experimental apparatus according to any one of claims 1 to 9, characterized in that: When 0 ≤ inlet dust concentration ≤ 53 mg / m³ 3 At this time, the control host outputs a speed adjustment signal to the bypass adjustable speed blower (10). As the inlet sand and dust concentration decreases to 0, the particle separation system switches from the reference working mode to the high total pressure recovery mode, and adjusts the rotation of the distributor until the optimal aerodynamic mode is reached. The speed of the bypass adjustable speed blower (10) decreases until the scavenging ratio is 5%. When 54≤inlet sand and dust concentration≤ 2000mg / m³ 3 At this time, the diverter is in the reference working mode position and remains stationary. The bypass variable speed blower (10) increases its speed, and the scavenging ratio increases. When the inlet sand and dust concentration reaches 2000mg / m³, 3 The scavenging ratio is adjusted to 30%; when 2001≤inlet dust concentration≤ 4000mg / m³ 3 At this time, the bypass variable speed blower (10) maintains a constant speed, and the distributor rotates to the high sand separation efficiency mode. When the sand and dust concentration reaches 4000 mg / m³, 3 The flow divider rotates to the optimal sand separation mode; when 4001 ≤ inlet sand and dust concentration ≤ 10000 mg / m³ 3 At the same time, keep the distributor in the best sand distribution mode, and the adjustable speed blower (10) continues to increase the speed until the maximum set speed of the adjustable speed blower (10) is reached.

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