CN106769135A - Inertia particle separator separating property test device and method - Google Patents

Abstract

The invention provides a separation performance test device for an inertial particle separator, which includes a sand-containing airflow generating device, a mainstream sand collection device, and a clearing flow sand collection device; the mainstream sand collection device includes a first separation device, a first sand collection box, a first The suction fan and the second separation device; the inlet of the first separation device is connected to the clean air outlet of the particle separator, the dust outlet is connected to the first sand collection device, and the gas outlet of the first separation device is connected to the first suction fan; after the first suction fan, it is connected to The third separation device: the removal flow sand particle collection device includes a second sand collection device connected to the removal flow port of the particle separator. The present invention also provides a corresponding test method for the separation performance of the inertial particle separator. Through the device, sand particles of different particle sizes can be selected to add and adjust the main flow path, clear flow path and the throttle valve at the inlet, and different sand particle sizes, Separation performance under different inlet flow rates and different removal ratios.

Description

Device and method for testing separation performance of inertial particle separator

technical field

The invention relates to the field of particle separators, in particular to a device and method for testing the separation performance of an inertial particle separator.

Background technique

Particle separators are used to separate solid particles from gas streams containing impurities. Installed at the front end of the working device to reduce the dirt entering the working device, thereby prolonging its service life.

The principle of the inertial particle separator is that when the airflow containing solid particles turns, the solid particles always move centrifugally from the center of curvature of the curved channel due to its inertia, so that the particles are collected and discharged. Such particle separators include cyclone separators, vortex tube separators, power centrifugal particle separators, integral inertial particle separators, etc.

Whether it is the particle separator in front of the engine or the particle separator in the industry, it often needs to work under different working conditions. For example, the separator on the engine, the sand particle size will be different in different regions, and the inlet flow will be different under different flight speeds. When the purge flow and the main outlet pressure conditions change, the purge ratio will also change. Therefore, in order to obtain the separation performance of a particle separator under various working conditions, it is necessary to test the separation performance of the particle separator under different inlet parameters and pneumatic parameters through experiments. Chinese invention patent CN201310188759.2 proposes a test device for measuring the aerodynamic performance of the integral inertial particle separator, but the device cannot measure the separation performance of the inertial particle separator.

Contents of the invention

Purpose of the invention: Aiming at the above prior art, a device and method for testing the separation performance of an inertial particle separator is proposed, which can test the separation performance of an inertial particle separator under different working conditions.

The invention provides a test device for the separation performance of a particle separator, which is suitable for measuring the separation performance of an inertial particle separator, comprising a sand-containing airflow generating device connected to the inlet of the particle separator, and a device connected to the outlet of the main channel of the particle separator. The mainstream sand particle collection device, the removal flow sand particle collection device connected with the outlet of the removal channel of the particle separator; the sand-containing air flow generating device is used to provide the sand-containing air flow to be tested; the mainstream sand particle collection device includes a first separation device, a first The sand collection box, the first exhaust fan and the second separation device; the inlet of the first separation device is connected to the outlet of the main channel of the particle separator, the dust outlet is connected to the first sand collection device, and the gas outlet of the first separation device is connected to the first exhaust fan; The second separation device is connected behind the first exhaust fan; the removal flow sand particle collection device includes a second sand collection device connected with the outlet of the removal flow channel of the particle separator.

Further, the removal flow sand collection device also includes a third separation device, a second exhaust fan and a fourth separation device; the inlet of the third separation device is connected to the outlet of the particle separator to remove the flow channel, and the dust outlet of the third separation device is connected to the second The sand collection device and the gas outlet of the third separation device are also connected to the second exhaust fan; the second exhaust fan is connected to the fourth separation device.

Further, the flow passage between the mainstream sand collection device and the particle separator is provided with a main flow throttling valve and a first flow measuring device in sequence according to the airflow direction; The direction is provided with a purge flow throttle valve and a second flow measuring device in turn.

Further, the sand-containing air flow generating device includes a fluidized bed, a sand adding device, and an air pump. The input port of the air pump is connected to a standard inlet flow tube, and the output port of the air pump is divided into two paths, one is connected to the bottom of the fluidized bed, and the other is connected to the fluidized bed. The feeding port of the bed; the sand adding device is installed on the flow path connected to the feeding port of the fluidized bed; the outlet of the fluidized bed is connected with the inlet of the particle separator.

Further, an inlet throttling valve is provided in the flow channel between the fluidized bed and the particle separator; a standard inlet flow pipe is installed before the inlet port of the air pump.

Further, the sand adding device is a container with an inverted cone at the bottom, and a thin tube is connected to the inlet of the sand adding device at the output port of the air pump to balance the pressure on the upper and lower parts of the sand adding device.

The present invention also provides a corresponding test method for the separation performance of the inertial particle separator, which includes the following steps: providing the airflow source of the particle separator to be tested through the sand-containing airflow generating device, and the airflow source flowing out of the main channel after the airflow source passes through the particle separator The mass of sand grains obtained after passing through the mainstream sand grain collection device is m _a1 , and the mass of sand grains obtained after the air flow out of the cleaning channel passes through the sand grain collection device of the clear flow channel is _ma2 , and the separation efficiency of the particle separator is obtained:

Further, by adjusting and testing the size of the separated main channel outflow gas flow W _a1 and the scavenging channel outflow gas flow W _a2 , test different removal ratios Under the separation efficiency of the particle separator.

Further, by adjusting the flow rate _Win at the inlet of the particle separator, the separation efficiency of the particle separator under different inlet flow rates is measured.

Further, by changing the particle size of the sand added to the sand adding device, the separation efficiency of the particle separator for sand particles of different particle sizes is measured.

Beneficial effects: the particle separator separation performance test device disclosed in the present invention is aimed at inertial particle separators with sand dust outlets and clean airflow outlets, such as integral inertial particle separators, cyclone separators, vortex tube separators, etc., The sand-containing airflow generating device of the device can generate uniform sand-containing airflow; it can test different sand particle sizes, different The separation performance of the particle separator under the conditions of the inlet flow rate and different removal ratios.

Description of drawings

Fig. 1 is a schematic diagram of an inertial particle separator tested in a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of a test device for the separation performance of the particle separator of the present invention.

Fig. 3 is a schematic diagram of the cyclone separator to be tested in preferred embodiment 2.

Fig. 4 is preferred embodiment 2 of the present invention.

Explanation of reference signs:

Figure 1: 1.19. The inlet channel of the tested inertial particle separator; 1.20. The clearing flow path of the tested inertial particle separator; 1.21. The main channel of the tested inertial particle separator;

Figure 2: 1.1. Standard inlet flow tube; 1.2. Air pump; 1.3. Fluidized bed; 1.4. Sand adding device; 1.5. Inlet throttle valve; ; 1.8. Flow measurement device; 1.9. Cyclone separator; 1.10. Exhaust fan; 1.11. Filter screen; 1.12. Sand collection box; 1.13. Main flow throttle valve; Sand collection box; 1.17. Exhaust fan; 1.18. Filter screen;

Figure 3: 2.22. Air inlet of tested cyclone separator; 2.23. Sand dust outlet of tested cyclone separator; 2.24. Gas outlet of tested cyclone separator.

Figure 4: 2.1. Standard inlet flow tube; 2.2. Air pump; 2.3. Fluidized bed; 2.4. Sand adding device; 2.5. Inlet throttle valve; .cyclone separator; 2.16. sand collection box; 2.17. exhaust fan; 2.18. filter screen;

detailed description

The test device for inertial particle separation device of the present invention can be used to separate inertial particle separators with sand dust outlets and clean air outlets, such as integral inertial particle separators, cyclone separators, vortex tube separators, and the like.

Embodiment 1: Taking the integral inertial particle separator as an example, Fig. 1 is an integral inertial particle separator, the sand-containing air flow enters the particle separator from the air inlet 1.19 of the inertial particle separator, and the dust and part of the gas are removed by The flow channel 1.20 is discharged, and the relatively clean gas after separating sand and dust is discharged from the main flow channel 1.21.

As shown in Figure 2, the air flow at the outlet of the air pump 1.2 is divided into two paths, one path of gas is connected to the blast outlet of the fluidized bed 1.3 through the standard inlet flow tube 1.1, the other path is connected to the feeding port of the fluidized bed 1.3, and the bottom of the sand adding device 1.4 is connected On the flow path before the feeding port of the fluidized bed 1.3, another path is connected to the inlet of the sand adding device 1.4. The outlet of the fluidized bed 1.3 is connected with the inlet channel 1.19 of the particle separator 1.6 through the inlet throttle valve 1.5. The outlet 1.18 of the purge channel 1.20 of the particle separator 1.6 is connected to the flow measuring device 1.8 through the purge flow throttle valve 1.7, and the outlet of the flow measuring device 1.8 is connected to the inlet of the cyclone separator 1.9. The clean gas outlet of the cyclone separator 1.9 is connected to the exhaust fan 1.10, and the dust outlet is connected to the sand collection box 1.12. Adopt filter screen 1.11 to collect tiny sand dust behind exhaust fan 1.10. The outlet 1.21 of the main channel of the particle separator 1.6 is connected to the flow measuring device 1.14 through the main flow throttle valve 1.13, the outlet of the flow measuring device 1.14 is connected to the inlet of the cyclone separator 1.15, and the clean gas outlet of the cyclone separator 1.15 is connected to the exhaust fan 1.17, The dust port is connected to the sand collecting box 1.16. Adopt filter screen 1.18 to collect tiny sand dust behind exhaust fan 1.17.

Among them, the power and air volume of the exhaust fan should be determined according to the working conditions to be measured in the experiment, such as the flow range. The filter screen can use a fine cloth bag filter screen, and the ideal state of the total sand collection device should be able to collect 100% of all sand particles in the airflow; as required, other separation devices can also be used, as long as the sand particles can be collected within the scope of protection That's it. The air pump can provide a constant inlet pressure of 32.24kPa, and the exhaust fan model is BYF7132. The cyclone separator can use a cyclone separator with a wind pressure of 1.7kPa and an air volume of 15m ³ /min as a separator device for ordinary tangential air intake matched with the exhaust fan. Of course, it can also be replaced by many other separators, such as the current separator Various, electrostatic dust removal, water dust removal, etc. can be used. The inner wall of the pipeline used to connect various components should be clean and smooth.

Embodiment 2: Taking the test cyclone separator efficiency as an example, as shown in Figure 3, it is a schematic diagram of the cyclone separator to be tested, the sand-containing air flow enters the separator by the inlet 2.22 of the cyclone separator to be tested, and the sand and dust enter the separator by the sand dust outlet 2.23 Discharge, the relatively clean gas after separating sand and dust is discharged by gas outlet 2.24.

As shown in Figure 4, the gas flow at the outlet of the air pump 2.2 is divided into two paths, one path of gas is connected to the blast outlet of the fluidized bed 2.3 through the standard inlet flow tube 2.1, the other path is connected to the feeding port of the fluidized bed 2.3, and the bottom of the sand adding device 2.4 is connected to the airflow port of the fluidized bed 2.3. On the flow path before the feeding port of the chemical bed 2.3, another path is connected to the inlet of the sand adding device 2.4. The outlet of the fluidized bed 2.3 is connected to the inlet 2.27 of the cyclone separator 2.6 to be tested through the inlet throttle valve 2.5. The dust outlet 2.28 of the cyclone separator 2.6 to be tested is connected to the sand collection box 2.12. The air outlet 2.29 of the cyclone separator 2.6 to be tested is connected to the inlet of the cyclone separator 2.15, the clean gas outlet of the cyclone separator 2.15 is connected to the exhaust fan 2.17, and the dust outlet is connected to the second sand collection box 2.16. Adopt filter screen 2.18 to collect tiny sand dust behind exhaust fan 2.17.

The separation performance test method of the inertial particle separator disclosed in the present invention is as follows:

Generate a flow field in the particle separator, add sand particles of a certain size to the sand adding device; respectively measure the flow rate W _in of the particle separator inlet, measure the flow rate W _a1 of the main flow outlet of the particle separator, and measure the flow rate W at the outlet of the clearing flow path _a2 and calculate clearance ratio Among them, there is no need to calculate the removal ratio for the case of no airflow at the dust outlet.

The sand flowing through the particle separator is weighed, as in Example 1, the mass measuring device is used to measure the total mass of the sand in the sand collection box 1.16 and the filter screen 1.18, and the sand content m _a1 in the mainstream is obtained; the mass measuring device is used to measure , such as a commonly used balance, the total mass of sand in the sand collection box 1.12 and the filter screen 1.11 is used to obtain the sand content m _a2 in the removal flow; in Example 2, it is only necessary to measure the mass of the sand in the sand collection box.

The separation efficiency of the calculated particle separator is thus obtained:

In the embodiment, the flow rate W _in at the inlet of the particle separator can be controlled by adjusting the inlet throttle valve to keep the sand particle size constant and the removal ratio the same, and measure the separation efficiency of the particle separator under different inlet flow conditions.

Embodiments can also control the main flow outlet flow W _a1 and the flow W _a2 of the purge outlet by adjusting the main flow throttle valve and the purge flow throttle valve, thereby changing the purge ratio At the same time, keep the sand particle size constant and the inlet flow rate the same, and measure the separation efficiency of the particle separator under different removal ratio conditions. In Example 2, there is no air flow at the dust outlet, so there is no need to measure the removal ratio. Embodiment It is also possible to change the particle size R of the sand particles added to the fluidized bed by screening the sand particles; keep the same removal ratio and the same inlet flow rate, and measure the separation efficiency of the particle separator under different particle size conditions.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a kind of test device of Inertia particle separator separating property, it is characterised in that：Including the import with particle separator The main flow grit collection device and particle of the sprue outlet connection of the air-stream generating device containing sand and particle separator of connection The removing quicksand grain collection device for removing runner exit connection of separator；

Air-stream generating device containing sand is used to provide air-flow containing sand to be tested；

Main flow grit collection device includes that the first separator, first receive sandbox, the first air exhauster and the second separator；First Sand device, the first separator gas are received in the import connection particle separator sprue outlet of separator, dust mouth connection first Body outlet the first air exhauster of connection；The second separator is connected after first air exhauster；

Removing quicksand grain collection device includes removing the second receipts sand device that runner exit is connected with particle separator.

2. the test device of Inertia particle separator separating property as claimed in claim 1, it is characterised in that：Remove quicksand grain Collection device also includes the 3rd separator, the second air exhauster and the 4th separator；The import connection grain of the 3rd separator Molecular separator removes runner exit, and sand device is received in the dust mouth connection second of the 3rd separator, and the 3rd separator gas goes out Mouth is also connected with the second air exhauster；The 4th separator is connected after second air exhauster.

3. the test device of Inertia particle separator separating property as claimed in claim 2, it is characterised in that：In main flow sand grains Runner between collection device and particle separator is sequentially provided with main flow choke valve and first flow measurement apparatus by airflow direction； In the runner removed between quicksand grain collection device and particle separator removing flow throttle valve and the are sequentially provided with by airflow direction Two flow measurement devices.

4. the test device of Inertia particle separator separating property as claimed in claim 1 or 2, it is characterised in that：Gas containing sand Flow generating apparatus include fluid bed, sanding device and air pump, the input port connection standard inlet flowtube of air pump, the output of air pump Mouth is divided into two-way, and fluidized-bed bottom is connected to all the way, and the charge door of fluid bed is connected to all the way；Sanding device is arranged on connection flow On the stream of the charge door for changing bed；The import of the outlet connection particle separator of fluid bed.

5. the test device of Inertia particle separator separating property as claimed in claim 4, it is characterised in that：In fluid bed and Runner between particle separator is provided with inlet throttle valve；Standard inlet flowtube is installed before the end of air pump input port.

6. the test device of Inertia particle separator separating property as claimed in claim 4, it is characterised in that：Sanding device is Bottom is the container of inverted cone-shaped, and the entrance that a tubule is connected to sanding device is drawn at the delivery outlet end of air pump, and sand is added to balance The pressure of device top and the bottom.

7. a kind of Inertia particle separator separating property method of testing, it is characterised in that comprise the following steps：By air-flow containing sand Generating means provides the air flow source of particle separator to be measured, and after particle separator, the air-flow of sprue outflow is through master for air flow source The sand quality obtained after quicksand grain collection device is m_a1, remove runner outflow air-flow through remove quicksand grain collection device after The sand quality for arriving is m_a2, obtain the separative efficiency of particle separator：

8. Inertia particle separator separating property method of testing as claimed in claim 7, it is characterised in that：By adjusting and survey The sprue effluent stream amount W that examination is isolated_a1With removing runner effluent stream amount W_a2Size, test it is different remove ratioUnder particle separator separative efficiency.

9. Inertia particle separator separating property method of testing as claimed in claim 7, it is characterised in that：By adjusting particle Flow W at separator import_in, measure the separative efficiency of the particle separator under different inlet flow rates.

10. Inertia particle separator separating property method of testing as claimed in claim 7, it is characterised in that：Added by changing Enter the sand grains particle diameter in sanding device, separative efficiency of the measurement particle separator to the sand grains of different-grain diameter.