CN115156153A - A wind-electric field coordinated control spray cleaning device for aero-engine blades and its working method - Google Patents

Abstract

The invention belongs to the technical field of aero-engine blade cleaning, and in particular relates to a wind-electric field coordinated spray cleaning device for aero-engine blades and a working method thereof; it mainly includes a wind-electric field coupled annular spray electrostatic device, an annular electrode, a hydrophobic Flow channel and cleaning liquid recovery and circulation system; this device first attaches and cleans a part of the electrostatically broken cleaning liquid droplets on the front of the blade through the wind field; then adjusts the spray angle and sends another part of the charged cleaning liquid droplets into the air Inside the engine, the charged cleaning liquid droplets move directionally with the electric field and attach to the back of the engine fan blade to achieve the effect of cleaning the back of the blade. The device of the invention occupies less space and is easy to operate; it can effectively save the amount of cleaning agent, and has the advantages of low cost, high cleaning efficiency, etc.; Realize the secondary utilization of waste liquid.

Description

A wind-electric field coordinated control spray cleaning device for aero-engine blades and how it works

technical field

The invention belongs to the technical field of aero-engine blade cleaning, and in particular relates to a wind-electric field coordinated spray cleaning device for aero-engine blades and a working method thereof.

Background technique:

After long-term operation of the aero-engine, carbon deposits, metal carbides, paint films, etc. remain on the blades and the inner wall of the engine. Long-term deposition will cause damage to the aero-engine, and at the same time, there are potential safety hazards, which need to be cleaned regularly. At present, the common cleaning method is to use a water gun with a certain water pressure to spray the fan blade disk of the aero-engine, and use the engine rotation to generate centrifugal force, so that the cleaning fluid is thrown out and discharged from the tail of the aero-engine. Another common method is to immerse the engine in the cleaning pool to achieve the purpose of descaling and carbon deposition without corroding aircraft components; however, the above two methods require a large amount of cleaning fluid and are expensive , and the water gun spray cleaning method has low cleaning efficiency on the back of the blade.

In view of the above problems, the present invention discloses a wind-electric field coordinated control spray technology, which enables the charged droplets to be attached to the front of the blade under the coupling action of a specific electrostatic field and the wind field, and then move to the back of the blade in a directional motion, which greatly improves cleaning efficiency and saves costs. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a wind-electric field coordinated spray cleaning device for aero-engine blades, which can effectively solve the problem that a large amount of cleaning liquid is wasted in the cleaning process, and simultaneously Part of the cleaning waste liquid can be used continuously through the cleaning liquid recycling system to meet the current technical requirements for sustainable development; the system layout with integrated and high space utilization can be more convenient during operation.

In order to achieve the above object, the present invention adopts the following technical solutions:

The present invention first provides a wind-electric field coordinated spray cleaning device for aero-engine blades. The device includes a fan, a liquid storage tank, an annular electrostatic spray device, an annular electrode, a hydrophobic flow channel, a first fixing rod, and a second fixing rod. , blade, super-hydrophobic material coating, cleaning fluid recovery pipeline, cleaning fluid delivery pipeline, main switch, first circuit switch, second circuit switch, third circuit switch, main circuit, first circuit, second circuit, third circuit Circuits, wind farms, aero-engines, filters, transfer pumps, filter solenoid valves and transfer pump solenoid valves;

The fan is located in front of the aero-engine; the aero-engine includes a built-in blade; the annular electrostatic spray device is located between the blade and the fan;

The position of the annular electrostatic spray device is recorded as the front end of the blade; then a ring electrode is provided at the rear end of the blade; the annular electrode is arranged on the periphery of the aero-engine, corresponding to the annular electrostatic spray device;

The annular electrostatic spray device and the annular electrode are fixed by the first fixing rod and the second fixing rod;

One end of the fan is connected to the second circuit and the first circuit through a third circuit; the second circuit is electrically connected to the annular electrostatic spray device, and a third circuit switch is arranged on the third circuit; There is a second circuit switch;

The inner wall of the aero-engine is coated with a super-hydrophobic material coating, and the width of the coating is greater than the width of the blade, so that the water droplets centrifuged by the blade fall on the surface of the coating;

A hydrophobic flow channel is docked below the blade, so as to collect the liquid sliding off the surface of the super-hydrophobic material coating; the outlet end of the hydrophobic flow channel is connected with the inlet end of the cleaning liquid recovery pipe through a pipe; the outlet end of the cleaning liquid recovery pipe It is connected with the inlet end of the filter through a pipeline, and the outlet end of the filter is connected with the inlet end of the liquid storage tank through a pipeline; a filter solenoid valve is installed on the filter;

The outlet end of the liquid storage tank is connected with the inlet end of the delivery pump through a pipeline, and the outlet end of the delivery pump is connected with the inlet end of the cleaning liquid delivery pipeline through a pipeline; the delivery pump is provided with a delivery pump solenoid valve;

The filter solenoid valve and the delivery pump solenoid valve are electrically connected to the first circuit, and a first circuit switch is provided on the first circuit;

The annular electrostatic spray device is composed of a high-voltage electrostatic generator, a spray head, a spray head switch, an induction electrode, a wire, a connecting pipe, a built-in wire in the connecting pipe, a ring, a circuit pipe built into the ring, a conveying pipe built in the ring, and a rotating shaft;

The cleaning liquid conveying pipe is connected with the inner conveying pipe of the circular ring. The surface of the inner conveying pipe of the circular ring is provided with a plurality of connecting pipes. Perform multi-angle rotation;

The surface of the spray head is also provided with a spray head switch to control the opening and closing of the spray head; the spray head switch is electrically connected to the built-in circuit pipe of the ring and the high-voltage electrostatic generator through the built-in wire of the connecting pipe; the high-voltage electrostatic generator is connected to the second circuit electrical connection;

The front end of the spray head is also provided with an induction electrode, and the induction electrode is in the shape of a ring; the induction electrode is electrically connected with the switch of the spray head through a wire; that is, one end of the wire is electrically connected with the switch of the spray head, and the other end is respectively connected with the induction The electrode and the conductive wire are electrically connected.

The front end of the spray head is also provided with a conductive wire, the other end of which is connected with the wire, and the conductive wire is used for contacting and electrifying the sprayed charged cleaning liquid droplets to form charged droplets.

Preferably, the connecting pipes are evenly spaced and distributed in a centripetal array on the surface of the inner-ring conveying pipe. Preferably, the fan is located directly in front of the aero-engine, and the two are coaxially arranged; the vertical distance between the fan and the blade of the aero-engine is 50-60 cm; the vertical distance between the annular electrostatic spray device and the blade is 10-15 cm ; The vertical distance between the annular electrode and the blade is 20-30cm; the vertical distance between the induction electrode and the nozzle of the nozzle is 3-5cm; the inner diameter of the induction electrode is consistent with the diameter of the nozzle.

Preferably, the width of the superhydrophobic material coating is 5-7 cm greater than the width of the blade; wherein the length of the blade is the length of the radius of the overall fan blisk, that is, the length of a single blade, and the width of the blade refers to the width of a single blade.

Preferably, the superhydrophobic material coating is formed with "V"-shaped hydrophobic lines on the inner wall of the aero-engine, extending from the top of the inner wall to the bottom hydrophobic flow channel, and the "V"-shaped tips all point to the hydrophobic flow channel at the bottom of the inner wall of the aero-engine.

Preferably, the hydrophobic flow channel is located at the bottom of the inner wall of the aero-engine; the hydrophobic flow channel is designed according to the shape and structure of the aero-engine as "flat-steep-flat", and the angle between the "steep" part and the horizontal plane is 10-25°.

The present invention also provides a working method of a wind-electric field coordinated control spray cleaning device for aero-engine blades, the specific steps are as follows:

S1. Turn on the main switch to energize the main circuit; control the first circuit switch and the second circuit switch to close;

Turn on the third circuit switch to control the fan to start running to form a stable wind field; turn on the first circuit switch, at this time the filter solenoid valve and the delivery pump solenoid valve are energized;

S2. Open the solenoid valve of the delivery pump, the cleaning liquid can enter the delivery pump from the liquid storage tank, enter the inner-ring delivery pipeline of the ring through the cleaning fluid delivery pipeline, and store it in the inner-ring delivery pipeline of the ring, close the delivery pump The electromagnetic valve;

S3. Turn on the second circuit switch, the high-voltage electrostatic generator is activated, and the nozzle is controlled by the nozzle switch to open, and the cleaning liquid can be transported from the built-in conveying pipeline of the ring to the nozzle through the connecting pipeline and sprayed, and the sprayed liquid passes through the induction electrode;

At the same time, the ejected liquid is electrified in contact with the conductive wire to form charged droplets; at this time, the induction electrode group distributed in a circular array can generate an electric field with the annular electrode, so that the charged droplets can move directionally in the electric field;

At this time, the wire is negatively charged, the sensing electrode is positively charged, the ring electrode needs to be installed with a ground wire, and the aero-engine casing needs to be installed with a ground wire;

S4. At the same time, due to the action of the wind field, the charged cleaning liquid droplets sprayed by the nozzle first attach to the front of the blade; the angle of the nozzle can be adjusted by rotating the shaft, so that the spray direction is directed towards the gap between the blades. Under the action of the wind field, The liquid will enter the inside of the aero-engine through the gap; due to the action of the electric field, the charged cleaning liquid droplets entering the aero-engine can move to the back of the blade in a direction; the cleaning liquid droplets will adhere to the front and back of the blade;

S5. After the cleaning liquid is attached to the front and back of the blade, turn off the third circuit switch and the second circuit switch. After standing for a period of time, start the aero-engine, open the filter solenoid valve, the blade starts to rotate, and the centrifugal force generated by its rotation The cleaning liquid on the surface is thrown to the super-hydrophobic material coating, and the droplets slide down to the hydrophobic flow channel through the "V"-shaped hydrophobic pattern, and then flow to the cleaning liquid recovery pipeline through the hydrophobic flow channel, and then enter the filter and filter through the filter. After the liquid is transported to the liquid storage tank;

S6. Finally, the filter solenoid valve is closed, the first circuit switch is closed, and the main switch is closed, and the operation ends.

Preferably, the standing period of time in step S5 is 10-20 min.

Beneficial effects of the present invention:

1. The device of the present invention occupies a smaller space. Compared with the tedious replacement of the cleaning tank for soaking, the integrated device enables the operator to operate the cleaning system more conveniently.

2. Compared with the cleaning method of the traditional water gun, the device of the present invention is more accurate. The device adopts the wind-electric field coordinated control spray system, and the generated charged droplets have stronger adhesion to the blade and can be attached to the blade for a long time. Chemically dissolve carbon deposits, metal carbides, etc. on the top; secondly, the charged droplets can move directionally in the electric field generated by the induction electrode and the ring electrode, so as to achieve the effect that the blade can be attached by the charged droplets on both the front and the back.

3. The device of the present invention has the characteristics of high utilization rate. First, the cleaning liquid is sprayed in the form of spray, so that the amount of cleaning liquid that needs to be used is greatly reduced, and the economic cost is reduced; Most of the charged droplets are precisely attached to the leaves. Compared with water gun cleaning, only a few charged droplets will disperse in the atmosphere. Secondly, the cleaning liquid recycling system is used to recycle the cleaning waste liquid, and through filtration, part of it can be reused. The secondary utilization of the material; during the recovery, the super-hydrophobic material coating on the inner wall of the aero-engine blade part and the "V"-shaped hydrophobic pattern make the recovery of the cleaning waste liquid more efficient.

Description of drawings

Fig. 1 is a general schematic diagram of a wind-electric field coordinated control spray cleaning device for aero-engine blades;

Figure 2 is a top view of the design of the superhydrophobic composite flow channel;

Fig. 3 is the front view of annular electrostatic spray device;

Fig. 4 is an enlarged view of the nozzle of the annular electrostatic spray device;

Reference signs: 1-high voltage electrostatic generator, 2-fan, 3-liquid storage tank, 4-ring electrostatic spray device, 5-ring electrode, 6-hydrophobic flow channel, 7-1-fixing rod one, 7-2 -Second fixed rod, 8-blades, 9-super-hydrophobic material coating, 10-cleaning fluid recovery pipeline, 11-cleaning fluid delivery pipeline, 12-main switch, 13-first circuit switch, 14-second circuit switch, 15-Third circuit switch, 16-General circuit, 17-First circuit, 18-Second circuit, 19-Third circuit, 20-Connecting pipe, 21-Sprinkler, 22-Rotating shaft, 23-Wind field, 24 -Aviation engine, 25-filter, 26-transfer pump, 27-induction electrode, 28-ring, 29-wire, 30-filter solenoid valve, 31-transfer pump solenoid valve, 32-ring built-in circuit pipeline, 33-circle built-in conveying pipeline, 34-sprinkler switch, 35-connecting pipeline built-in wire.

Specific implementation method

The present invention will be further described below in conjunction with the specific drawings and embodiments:

Example 1:

As shown in Figures 1-4, the device includes a fan 2, a liquid storage tank 3, an annular electrostatic spray device 4, an annular electrode 5, a hydrophobic flow channel 6, a fixed rod 1 7-1, a fixed rod 2 7-2, and blades 8. Super-hydrophobic material coating 9, cleaning fluid recovery pipeline 10, cleaning fluid delivery pipeline 11, main switch 12, first circuit switch 13, second circuit switch 14, third circuit switch 15, main circuit 16, first circuit 17. The second circuit 18, the third circuit 19, the wind farm 23, the aeroengine 24, the filter 25, the delivery pump 26, the filter solenoid valve 30 and the delivery pump solenoid valve 31;

The fan 2 is located in front of the aero-engine 24, and the two are coaxially arranged; the aero-engine 24 includes a built-in blade 8, and the vertical distance between the fan 2 and the blade 8 of the aero-engine 24 is 50 cm; the annular electrostatic spray device 4 Between the blade 8 and the fan 2, the vertical distance between the annular electrostatic spray device 4 and the blade 8 of the aero-engine 24 is 12cm;

The position of the annular electrostatic spray device 4 is marked as the front end of the blade 8; then a ring electrode 5 is provided at the rear end of the blade 8, and the vertical distance between the annular electrode 5 and the blade 8 is 25cm; The periphery of the aero-engine 24 corresponds to the annular electrostatic spray device 4;

The inner diameter of the annular electrode 5 needs to be larger than the outer diameter of the compressor casing of the aero-engine 24 by 4 cm.

The annular electrostatic spray device 4 and the annular electrode 5 are fixed by fixing rod 1 7-1 and fixing rod 2 7-2, and the number of fixing rods can be increased;

One end of the fan 2 is connected to the second circuit 18 and the first circuit 17 through a third circuit 19; the second circuit 18 is electrically connected to the annular electrostatic spray device 4, and the third circuit 19 is provided with a third circuit switch 15; the second circuit 18 is provided with a second circuit switch 14;

The inner wall of the aero-engine 24 is coated with a super-hydrophobic material coating 9, and the width of the coating is greater than the width of the blade 8, so that the water droplets centrifuged by the blade 8 fall on the coating surface; the width of the super-hydrophobic material coating 9 is greater than the width of the blade 8 by 5cm ; Wherein the length of the blade 8 is the radius length of the overall fan blisk, that is, the length of a single blade 8, and the width of the blade 8 is the width of a single blade 8.

The bottom of the blade 8 is docked with a hydrophobic flow channel 6, so as to collect the liquid sliding off the surface of the super-hydrophobic material coating 9; wherein the hydrophobic flow channel 6 is located at the bottom of the inner wall of the aero-engine 24; "Flat-steep-flat" design, the angle between the "steep" part and the horizontal plane is 15°, and the structure of different aero-engines will lead to different angles between the "steep" part and the horizontal plane; the outlet end of the hydrophobic flow channel 6 It is connected with the inlet pipe of the cleaning liquid recovery pipe 10; the outlet end of the cleaning liquid recovery pipe 10 is connected with the inlet pipe of the filter 25, and the outlet end of the filter 25 is connected with the inlet pipe of the liquid storage tank 3; A filter solenoid valve 30 is installed;

The super-hydrophobic material coating 9 is formed with a "V"-shaped hydrophobic pattern on the inner wall of the aero-engine 24, extending from the top of the inner wall to the bottom hydrophobic flow channel 6, and the "V"-shaped tips all point to the hydrophobic flow channel at the bottom of the inner wall of the aero-engine 24. 6; The "V"-shaped hydrophobic pattern can better enrich the liquid, so that it can accurately flow into the hydrophobic flow channel 6;

The outlet end of the storage tank 3 is connected with the inlet end of the delivery pump 26, and the outlet end of the delivery pump 26 is connected with the inlet end of the cleaning fluid delivery pipeline 11; the delivery pump 26 is provided with a delivery pump solenoid valve 31;

The filter solenoid valve 30 and the delivery pump solenoid valve 31 are electrically connected to the first circuit 17, and the first circuit 17 is provided with a first circuit switch 13,

The outlet end of the cleaning liquid conveying pipeline 11 is connected with the annular electrostatic spray device 4 pipeline;

The annular electrostatic spray device 4 consists of a high-voltage electrostatic generator 1, a spray head 21, a spray head switch 34, an induction electrode 27, a wire 29, a connecting pipe 20, a built-in wire 35 in the connecting pipe, a ring 28, a circuit pipe 32 inside the ring, and a ring. The ring is composed of a built-in conveying pipeline 33 and a rotating shaft 22;

The cleaning liquid delivery pipeline 11 is connected to the inner ring-shaped delivery pipeline 33 inside the ring 28. The surface of the ring-shaped delivery pipeline 33 is provided with 8 evenly distributed connecting pipelines 20, and the connecting pipelines 20 are distributed in an array in the centripetal direction. . 8 are only for example, normally more than 16 are required; the connecting pipe 20 is communicated with the nozzle 21, and a rotating shaft 22 is provided at the connecting pipe 20, so that the nozzle 21 can be rotated at multiple angles;

The surface of the spray head 21 is also provided with a spray head switch 34 to control the opening and closing of the spray head 21; the spray head switch 34 is electrically connected to the annular built-in circuit pipe 32 and the high-voltage electrostatic generator 1 through the built-in wire 35 of the connecting pipe; The high-voltage electrostatic generator 1 is electrically connected to the second circuit 18;

The front end of the spray head 21 is also provided with a sensing electrode 27, the vertical distance between the sensing electrode 27 and the nozzle of the spray head 21 is 3 cm, the sensing electrode 27 is in the shape of a ring, and its inner diameter is consistent with the diameter of the spray head 21; the sensing electrode 27 passes through The wire 29 is electrically connected to the shower head switch 34; that is, one end of the wire 29 is electrically connected to the shower head switch 34, and the other end is electrically connected to the sensing electrode 27 and the conductive wire respectively.

Because the nozzles 21 are connected to the connecting pipe 20, the nozzles 21 are also distributed evenly in an annular array; wherein, the nozzles are capillary nozzles, the inner diameter of the capillary is 0.3mm, the outer diameter is 0.5mm, and the diameter of the nozzle is 10.0mm;

The length distance of the liquid sprayed from the nozzle 21 needs to be greater than or equal to the length of the blades 8, and the maximum width of the spray needs to be greater than the sum of the maximum widths of each blade 8 and the gap between the blades, that is, to ensure that the cleaning liquid sprayed by the nozzle 21 is Realize the effect of spraying and cleaning the whole blade disk of the fan;

Due to the different specifications of the aero-engine 24 blades 8, the length is between 20mm-800mm, and the specific regulation is well known by professionals, and will not be repeated here;

The front end of the spray head 21 is also provided with a conductive wire, the other end of which is connected with the wire 29, and the conductive wire is used for contacting the sprayed charged cleaning liquid droplets to electrify.

A working method for a wind-electric farm coordinated control spray cleaning device, the specific steps are as follows:

S1. Turn on the main switch 12 to energize the main circuit 16; at this time, the first circuit switch 13 and the second circuit switch 14 are turned on; The circuit switch 13, at this time, the filter solenoid valve 30 and the delivery pump solenoid valve 31 are in an energized state;

The fan 2 can use the existing commonly used models, and the power of the fan can be changed according to the changes of different environments during off-site operations, so as to ensure that the sprayed charged cleaning liquid droplets will not escape into the atmosphere in large quantities through the wind field 23;

S2. Open the delivery pump solenoid valve 31, the cleaning liquid can enter the delivery pump 26 from the liquid storage tank 3, enter the inner-ring delivery pipeline 33 of the ring 28 through the cleaning fluid delivery pipeline 11, and store it in the inner ring of the ring 28. In the delivery pipeline 33, close the delivery pump solenoid valve 31;

S3. Turn on the second circuit switch 14, the high-voltage electrostatic generator 1 is activated, and the nozzle switch 34 is used to control the nozzle 21 to open, and the cleaning liquid can be transported from the annular built-in conveying pipe 33 to the nozzle 21 through the connecting pipe 20. The liquid passes through the sensing electrode 27; at the same time, the sprayed liquid contacts the conductive wire and electrifies the liquid, so that the liquid is charged. At this time, the group of sensing electrodes 27 distributed in a circular array can generate an electric field with the ring electrode 5, and the charged droplets can Do directional movement in the electric field;

The high-voltage electrostatic generator 1 can generate a voltage of 0-20 kV. Here, the high-voltage electrostatic generator 1 generates a voltage of 15 kV to the induction electrode 27 and the wire 29 .

At this time, the wire 29 is negatively charged, the induction electrode 27 is positively charged, the annular electrode 5 needs to be installed with a ground wire, and the casing of the aero-engine 24 needs to be installed with a ground wire;

Since the induction electrode 21 and the wire 29 are electrically connected with the high-voltage electrostatic generator 1, a high voltage will be generated in the working state, so the spray head 21 needs to be covered with an insulating casing to avoid damage to the spray head 21 and other components due to the high voltage;

The insulating casing used by the spray head 21 can be made of Teflon, of course, a ceramic casing can also be used, and the ring electrode 5 can be a copper electrode;

S4. Due to the action of the wind field 23, the sprayed charged cleaning liquid droplets are first attached to the front of the blade 8; the angle of the spray head 21 can be adjusted by the rotating shaft 22, so that the spray direction is directed towards the gap between the blades 8, in the wind field 23 Under the action of the electric field, the liquid will enter the inside of the aero-engine 24 through the gap; due to the action of the electric field, the charged cleaning liquid droplets entering the inside of the aero-engine 24 can move to the back of the blade 8 in a direction, and after 15 minutes, the cleaning liquid droplets will adhere to the blade. 8 front and back;

S5. After the cleaning liquid is attached to the front and back of the blade 8, the third circuit switch 15 and the second circuit switch 14 are turned off, and after standing for 20 minutes, they are attached to the back of the overall blade disk of the fan to prevent carbon deposits, metal carbides and other substances Carry out chemical dissolution; start the aero-engine 24, open the filter solenoid valve 30, start to rotate from the blade 8, and the centrifugal force generated by its rotation makes the cleaning waste liquid on its surface thrown to the super-hydrophobic material coating 9, through the "V"-shaped hydrophobic The lines make the droplets slide down to the hydrophobic flow channel 6, flow to the cleaning liquid recovery pipeline 10 through the hydrophobic flow channel 6, and then enter the filter 25, and the liquid filtered by the filter 25 is transported to the liquid storage tank 3;

Such as 15min, 20min, this time length can be changed according to the site conditions, an example time length is given here, because the site environment and the specifications of the aero-engine 24 are different, so the charged cleaning liquid droplets are directed to move to the back of the blade 8. time is not the same;

When the cleaning liquid droplets are attached, because there is very little cleaning liquid that does not react with the stains, the mixed liquid state of the cleaning liquid and the cleaning waste liquid is collectively referred to as the cleaning waste liquid;

After the cleaning waste liquid enters the filter 25 from the hydrophobic flow channel 6, the filter 25 will filter and recycle the cleaning waste liquid, filter the cleaning waste liquid material that cannot be reused, and transport the cleaning liquid material that can be reused to the storage tank. in tank 3;

The cleaning liquid in the liquid storage tank 3 can flow into the delivery pump 26, and the cleaning liquid is re-delivered to the annular built-in delivery pipe 33 of the annular electrostatic spray device 4 by the delivery pump 26;

Among them, the filter element in the filter 25 contains a filter screen that can filter out insoluble precipitates and metal carbides, deposits, and paint films produced by chemical reactions, and contains filter materials that can decompose and filter oily substances, toxic soluble chemical substances, etc., It is an existing material, purchased from the cleaning filter element on the market, and the specific components are well known by professionals, and will not be repeated here (of course, the cleaning material can also be replaced by independent research and development);

Wherein, the non-recyclable cleaning liquid components include but are not limited to: react with the cleaning waste liquid to produce precipitation, or produce non-decomposable, toxic substances, etc.;

The filtered waste liquid material needs to be dismantled from the filter element of the filter 25 for processing or exported by using a conduit using negative pressure;

S6. Finally, the filter solenoid valve 30 is closed, the first circuit switch 13 is closed, and the main switch 12 is closed, and the operation ends.

Explanation: The above embodiments are only used to illustrate the present invention rather than limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should It should be understood that the present invention can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims (10)

1. A wind-electric field coordinated regulation and control spray cleaning device for an aircraft engine blade is characterized by comprising a fan (2), a liquid storage tank (3), an annular electrostatic spraying device (4), an annular electrode (5), a hydrophobic flow channel (6), a first fixing rod (7-1), a second fixing rod (7-2), a blade (8), a super-hydrophobic material coating (9), a cleaning liquid recovery pipeline (10), a cleaning liquid conveying pipeline (11), a main switch (12), a first circuit switch (13), a second circuit switch (14), a third circuit switch (15), a main circuit (16), a first circuit (17), a second circuit (18), a third circuit (19), an air field (23), an aircraft engine (24), a filter (25), a conveying pump (26), a filter (30) and a conveying pump electromagnetic valve (31);

the fan (2) is positioned in front of the aircraft engine (24); the aircraft engine (24) comprises an internal blade (8); the annular electrostatic spraying device (4) is positioned between the blade (8) and the fan (2);

the position of the annular electrostatic spraying device (4) is marked as the front end of the blade (8); an annular electrode (5) is arranged at the rear end of the blade (8); the annular electrode (5) is arranged on the periphery of the aircraft engine (24) and corresponds to the annular electrostatic spraying device (4);

the annular electrostatic spraying device (4) and the annular electrode (5) are fixed through a first fixing rod (7-1) and a second fixing rod (7-2);

one end of the fan (2) is connected with the second circuit (18) and the first circuit (17) through a third circuit (19); the second circuit (18) is electrically connected with the annular electrostatic spraying device (4), and a third circuit switch (15) is arranged on the third circuit (19); a second circuit switch (14) is arranged on the second circuit (18);

the inner wall of the aero-engine (24) is coated with a super-hydrophobic material coating (9), and the width of the coating is larger than that of the blade (8), so that water drops centrifuged by the blade (8) fall on the surface of the coating;

a hydrophobic flow channel (6) is butted below the blade (8) so as to collect liquid sliding from the surface of the super-hydrophobic material coating (9); the outlet end of the drainage flow channel (6) is connected with the inlet end of the cleaning solution recovery pipeline (10) through a pipeline; the outlet end of the cleaning solution recovery pipeline (10) is connected with the inlet end of a filter (25) through a pipeline, and the outlet end of the filter (25) is connected with the inlet end of the liquid storage tank (3) through a pipeline; a filter electromagnetic valve (30) is arranged on the filter (25);

the outlet end of the liquid storage tank (3) is connected with the inlet end of a delivery pump (26) through a pipeline, and the outlet end of the delivery pump (26) is connected with the inlet end of a cleaning liquid delivery pipeline (11) through a pipeline; a delivery pump electromagnetic valve (31) is arranged on the delivery pump (26);

the filter electromagnetic valve (30) and the delivery pump electromagnetic valve (31) are electrically connected with the first circuit (17), and a first circuit switch (13) is arranged on the first circuit (17);

the annular electrostatic spraying device (4) consists of a high-voltage electrostatic generator (1), a spray head (21), a spray head switch (34), an induction electrode (27), a lead (29), a connecting pipeline (20), a connecting pipeline built-in lead (35), a ring (28), a ring built-in circuit pipeline (32), a ring built-in conveying pipeline (33) and a rotating shaft (22);

the cleaning liquid conveying pipeline (11) is connected with a ring built-in conveying pipeline (33) inside the ring (28), a plurality of connecting pipelines (20) are arranged on the surface of the ring built-in conveying pipeline (33), the connecting pipelines (20) are communicated with the spray head (21), and a rotating shaft (22) is arranged at the connecting pipelines (20) so as to enable the spray head (21) to rotate at multiple angles;

the surface of the spray head (21) is also provided with a spray head switch (34) for controlling the spray head (21) to be opened and closed; the spray head switch (34) is electrically connected with the ring built-in circuit pipeline (32) and the high-voltage electrostatic generator (1) through a connecting pipeline built-in lead (35); the high-voltage electrostatic generator (1) is electrically connected with the second circuit (18);

the front end of the spray head (21) is also provided with an induction electrode (27), and the induction electrode (27) is in a circular ring shape; the induction electrode (27) is electrically connected with the spray head switch (34) through a lead (29); one end of the lead (29) is electrically connected with the spray head switch (34), and the other end of the lead is respectively electrically connected with the induction electrode (27) and the conductive wire;

the front end of the spray head (21) is also provided with a conductive wire, the other end of the conductive wire is communicated with a conductive wire (29), and the conductive wire is used for contacting and electrifying the sprayed charged cleaning liquid droplets to form charged liquid droplets.

2. A wind-electric field coordinated regulation spray cleaning device for aircraft engine blades according to claim 1, characterized in that the connecting pipes (20) are uniformly spaced on the surface of the ring built-in conveying pipe (33) and distributed in an array in a centripetal direction.

3. A wind-farm co-regulated spray washing device for aeroengine blades according to claim 1, characterized in that said fan (2) is located directly in front of the aeroengine (24), both coaxially arranged; the vertical distance between the fan (2) and the blade (8) of the aircraft engine (24) is 50-60cm.

4. A wind-electric field coordinated spray washing device for aeroengine blades according to claim 1, characterized in that the vertical distance of the annular electrostatic spraying device (4) to the blades (8) is 10-15cm; the vertical distance between the annular electrode (5) and the blade (8) is 20-30cm.

5. A wind-electric field coordinated spray cleaning device for aircraft engine blades according to claim 1, characterized in that the vertical distance of the induction electrode (27) from the nozzle orifice of the nozzle (21) is 3-5cm; the inner diameter of the induction electrode (27) is consistent with the diameter of the spray head (21).

6. A wind-farm coordinated spray washing device for aeroengine blades according to claim 1, characterised in that the super hydrophobic material coating (9) is 5-7cm wider than the blade (8); the length of the blade (8) is the length of the radius of the integral fan blade disc, namely the length of a single blade (8), and the width of the blade (8) refers to the width of the single blade (8).

7. The wind-electric field coordinated control spray cleaning device for the blades of the aero-engine as claimed in claim 1, wherein the super-hydrophobic material coating (9) is formed with a V-shaped hydrophobic texture on the inner wall of the aero-engine (24) and extends from the top of the inner wall to the bottom of the hydrophobic flow passage (6); the V-shaped tips point to the water drainage flow channel (6) at the bottom of the inner wall of the aircraft engine (24).

8. A wind-electric field coordinated spray cleaning device for an aircraft engine blade according to claim 1, characterized in that the hydrophobic flow channel (6) is located at the bottom of the inner wall of the aircraft engine (24); the drainage flow passage (6) is designed to be flat-steep-flat according to the appearance structure of the aircraft engine (24), wherein the included angle between the steep part and the horizontal plane is 10-25 degrees.

9. A working method of a wind-electric field cooperative regulation spray cleaning device for an aircraft engine blade is characterized by comprising the following specific steps:

s1, opening a main switch (12) to electrify a main circuit (16); controlling the first circuit switch (13) and the second circuit switch (14) to be closed;

a third circuit switch (15) is turned on, the fan (2) is controlled to start to operate, and a stable wind field (23) is formed; opening a first circuit switch (13), wherein a filter electromagnetic valve (30) and a delivery pump electromagnetic valve (31) are in an electrified state;

s2, opening a delivery pump electromagnetic valve (31), enabling cleaning liquid to enter a delivery pump (26) from a liquid storage tank (3), enter a ring built-in delivery pipeline (33) of a ring (28) through a cleaning liquid delivery pipeline (11), store the cleaning liquid in the ring built-in delivery pipeline (33) of the ring (28), and close the delivery pump electromagnetic valve (31);

s3, turning on a second circuit switch (14), starting the high-voltage electrostatic generator (1), controlling a spray head (21) to be opened through a spray head switch (34), conveying cleaning liquid to the spray head (21) from a circular ring built-in conveying pipeline (33) through a connecting pipeline (20) to be sprayed out, and enabling the sprayed liquid to pass through an induction electrode (27);

meanwhile, the sprayed liquid is contacted with the conductive wire to be electrified, so that the liquid is electrified, and an electric field can be generated between the induction electrode (27) group distributed in the annular array and the annular electrode (5), so that the electrified liquid drops can move directionally in the electric field;

at the moment, the lead (29) is negatively charged, the induction electrode (27) is positively charged, the annular electrode (5) needs to be provided with a grounding wire, and the shell of the aircraft engine (24) needs to be provided with a grounding wire;

s4, simultaneously, under the action of the wind field (23), the charged cleaning liquid drops sprayed by the spray head (21) are firstly attached to the front surface of the blade (8); the angle of the spray head (21) can be adjusted through the rotating shaft (22), the spraying direction is enabled to face to a gap between the blades (8), and liquid can penetrate through the gap to enter the interior of the aircraft engine (24) under the action of a wind field (23); the charged cleaning liquid drops entering the interior of the aircraft engine (24) can directionally move to the back of the blade (8) due to the action of the electric field; the cleaning liquid drops can be attached to the front and the back of the blade (8);

s5, after cleaning liquid is attached to the front side and the back side of the blade (8), closing a third circuit switch (15) and a second circuit switch (14), standing for a period of time, starting an aircraft engine (24), opening a filter electromagnetic valve (30), starting the blade (8) to rotate, throwing the cleaning liquid on the surface of the blade to a super-hydrophobic material coating (9) by centrifugal force generated by rotation of the blade, enabling liquid drops to slide to a hydrophobic flow channel (6) through V-shaped hydrophobic lines, enabling the liquid drops to flow to a cleaning liquid recovery pipeline (10) through the hydrophobic flow channel (6), enabling the liquid drops to enter a filter (25), and conveying the liquid filtered by the filter (25) to a liquid storage tank (3);

and S6, finally, closing the electromagnetic valve (30) of the filter, closing the first circuit switch (13), closing the main switch (12), and finishing the operation.

10. The working method of the wind-electric field coordinated control spray cleaning device for the blades of the aircraft engine as claimed in claim 9, wherein the standing period in the step S5 is 10-20min.

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