CN114232767A

CN114232767A - Ground rainwater collecting device for airplane test

Info

Publication number: CN114232767A
Application number: CN202210034307.8A
Authority: CN
Inventors: 吴敬涛; 成竹; 都亚鹏; 任战鹏; 王红斌
Original assignee: AVIC Aircraft Strength Research Institute
Current assignee: AVIC Aircraft Strength Research Institute
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-03-25
Anticipated expiration: 2042-01-13
Also published as: CN114232767B

Abstract

The invention discloses a ground rainwater collecting device for airplane testing, which belongs to the technical field of airplane testing and comprises a gathering drain pipe laid underground in a laboratory, wherein a plurality of branch drain pipes are arranged on two sides of the gathering drain pipe; the drainage structure comprises a grid floor drain opening, and a rainfall sensor is fixedly arranged on the inner side wall of the grid floor drain opening; the device realizes the heat insulation treatment of the indoor environment and the outdoor environment of the laboratory, and effectively reduces the temperature transfer between the indoor environment and the outdoor environment of the device; the heat preservation and freeze-thaw resistance are good; the extrusion type flexible sealing measure is adopted, so that the device has good sealing performance; has stronger anti-deformation performance and meets the wide temperature range working environment of a climate laboratory.

Description

Ground rainwater collecting device for airplane test

Technical Field

The invention relates to the technical field of airplane testing, in particular to a ground rainwater collecting device for airplane testing.

Background

In the airplane test engineering, tests such as rain, freezing rain, snowfall and the like need to be carried out in an airplane climate laboratory, a large amount of accumulated water is generated on the ground, and a rainwater collection device is required to collect and intensively discharge test water on the ground of the laboratory. However, the aircraft climate laboratory also needs to perform extreme temperature environment tests, particularly at extreme low temperatures, the drainage device can be affected by floor deformation to cause structural damage, and the extreme low temperatures in the laboratory can enter the drainage pipeline along the drainage port to cause freeze thawing so as to affect the whole drainage system. Therefore, the ground rainwater collecting device for the airplane test is needed to be designed to solve the problem of environmental tolerance of the drainage system and ensure that the airplane climate laboratory drainage system can reliably work in high and low temperature environments for a long time.

Disclosure of Invention

Aiming at the technical problems, the invention provides a ground rainwater collecting device for an airplane test.

In order to achieve the purpose, the invention provides the following technical scheme:

a ground rainwater collecting device for airplane testing comprises a gathering drain pipe laid underground in a laboratory, wherein a plurality of branch drain pipes are arranged on two sides of the gathering drain pipe, a drainage structure communicated with the branch drain pipes is fixedly arranged in the laboratory ground, and a U-shaped trap is arranged on the gathering drain pipe close to a discharge end;

the drainage structure comprises a grid floor drain opening, a rainfall sensor is fixedly arranged on the inner side wall of the grid floor drain opening, a reducer pipe is fixedly connected to the lower end of the grid floor drain opening, the pipe diameter of the reducer pipe gradually decreases from top to bottom, a main drainage pipe is connected to the lower end of the reducer pipe, and a sealing plug opening and closing mechanism is arranged on the main drainage pipe;

the sealing plug opening and closing mechanism is a first opening and closing mechanism, the first opening and closing mechanism comprises a sealing plug which is hermetically matched in the reducing pipe, the lower end of the sealing plug is fixedly connected with a mandril which extends downwards, the mandril extends into the main drainage pipe, a sliding restraint ring is arranged on the mandril in a sliding fit manner, the sliding restraint ring is fixedly connected with the inner side wall of the main drainage pipe through a plurality of fixing pieces, and the sliding restraint ring restrains the mandril to slide only in the vertical direction;

an upper travel switch is fixedly arranged on the inner side wall of the reducer pipe above the sealing plug, and a lower travel switch is fixedly arranged on the inner side wall of the main drainage pipe below the sealing plug;

the inner side wall of the main drainage pipe is fixedly connected and provided with a rotating support ring below the sliding restraint ring, the rotating support ring is fixedly connected with the inner side of the main drainage pipe through a plurality of fixed connecting sheets, the top of the rotating support ring is connected and provided with a lifting drive ring in a rotating fit manner, the lifting drive ring is fixedly connected and provided with an annular driven belt pulley, the inner side of the lifting drive ring is provided with an internal thread, the outer side surface of the ejector rod, which is close to the lower end, is provided with an external thread, and the external thread is in transmission connection with the internal thread;

a first motor sealing shell is fixedly connected to the side surface of the main drainage pipe, a first driving motor is fixedly connected in the first motor sealing shell, a driving belt wheel is fixedly connected to an output shaft of the first driving motor, a belt through groove is formed in the position, located in the first motor sealing shell, of the side wall of the main drainage pipe, the driving belt wheel is in transmission connection with the driven belt wheel through a driving belt, and the driving belt penetrates through the belt through groove;

the outer side of the main drainage pipe is sleeved with a heat-insulation pipe, and the lower end of the main drainage pipe is hermetically connected with the inner side wall of the heat-insulation pipe through a rubber ring;

the heat preservation insulating tube lower extreme has the ladder reducing section, ladder reducing section lower extreme is connected with the drainage return bend, the drainage return bend with divide the drain pipe to be connected, the outer cover of heat preservation insulating tube is equipped with the heat preservation cotton.

Preferably, the fixing plate is flat and extends along the radial direction of the main drain pipe.

Description of the drawings: the flat fixing pieces can fix the sliding restraint ring and cannot influence the smoothness of drainage.

Preferably, a sealing isolation cover is fixedly arranged on the fixed connecting piece, the sealing isolation cover wraps the lower end portions of the rotating support ring, the lifting drive ring, the driven pulley and the ejector rod, and a belt slot for a driving belt to penetrate is formed in the side face of the sealing isolation cover.

Description of the drawings: the sealing isolation cover plays a role in protecting some transmission parts and parts, and the parts and parts are prevented from being directly corroded by sewage during drainage.

Preferably, the fixed sealing washer that is equipped with in ladder reducing section inside wall top, the inboard edge in sealing washer top carries out the chamfer and handles, main sewer pipe lower extreme edge is fixed to be equipped with sealed cooperation ring, sealed cooperation ring lower extreme outside edge carries out the chamfer and handles, chamfer part on the sealed cooperation ring with chamfer part in close contact with cooperation on the sealing washer.

Description of the drawings: the chamfer part on the sealing fit ring is in sealing contact fit with the chamfer part on the sealing ring, and the lower end edge of the main drainage pipe is in closer sealing fit with the sealing fit ring under the action of the self gravity of the main drainage pipe.

Preferably, the laboratory ground construction structure at the drainage structure comprises an upper reinforced concrete plate, a glass foam heat insulation layer, a lower reinforced concrete plate, a plain concrete layer and a sand cushion layer from top to bottom.

Description of the drawings: the laboratory ground construction structure has the characteristics of heat preservation and freeze melting prevention.

Preferably, the first opening and closing mechanism is replaced by a second opening and closing mechanism, the second opening and closing mechanism comprises a rotary opening and closing circular plate, a spherical annular groove is formed in the inner side wall of the main drainage pipe, the side surface of the rotary opening and closing circular plate is of a spherical structure, and the spherical structure on the side surface of the rotary opening and closing circular plate is matched and connected with the spherical annular groove;

the side wall of the main drainage pipe is provided with support shaft matching holes protruding outwards, two support shaft matching holes are symmetrically arranged about the central axis of the main drainage pipe, two side surfaces of the rotary opening and closing circular plate are fixedly connected with support small shafts, and the support small shafts are connected with the support shaft matching holes on the corresponding side in a rotating matching mode;

the fixed second motor seal shell that is equipped with on the main sewer pipe lateral wall, one of them support the staff and extend to inside the second motor seal shell, support the staff and extend to the inside one end of second motor seal shell is fixed and is equipped with the worm wheel, second motor seal shell internal fixation is equipped with second driving motor, the fixed worm that is equipped with on second driving motor's the output shaft, the worm with the worm wheel meshing is connected.

Description of the drawings: the second opening and closing mechanism is good in sealing and isolating effect, the worm and gear can transmit large torque, and the situation that the second opening and closing mechanism cannot be opened due to icing is avoided.

Preferably, the rotary opening and closing circular plate is of a hollow structure, aerogel blocks are filled in the rotary opening and closing circular plate, and a first electric heating piece is fixedly attached to the inner side wall of the rotary opening and closing circular plate.

Description of the drawings: fill aerogel piece in the rotatory plectane of opening and close, the aerogel piece has fine thermal-insulated heat preservation effect, and when the rotatory plectane outside of opening and close had the condition of freezing, first electric heat piece played and melts the effect rapidly, avoids the rotation to open and close the plectane and open and close obstructed.

Preferably, the first opening and closing mechanism is replaced by a third opening and closing mechanism, the third opening and closing mechanism comprises a magnetic suspension sealing plug which is in sealing fit with the reducing pipe, the magnetic suspension sealing plug is of a hollow structure, aerogel blocks are filled in the magnetic suspension sealing plug, permanent magnetic sheets are fixedly embedded in the inner side wall of the magnetic suspension sealing plug, a plurality of permanent magnetic sheets are arranged in an annular array along the inner side wall of the magnetic suspension sealing plug, and the magnetic poles of the permanent magnetic sheets are in the same direction;

the outer side wall of the reducer pipe is fixedly provided with an annular magnetic coil containing shell, and an electromagnetic coil is fixedly arranged in the magnetic coil containing shell.

Description of the drawings: the opening and closing of the magnetic suspension sealing plug are controlled through mutual repulsion of the magnetic poles, so that redundant transmission structures are omitted, and water drainage is smoother.

Preferably, a sealing ring is embedded in the outer side wall of the magnetic suspension sealing plug, and a plurality of rings are arranged on the sealing ring.

Preferably, a downwardly extending sealing plug direction restriction rod is fixedly arranged at the lower end of the magnetic levitation sealing plug, a direction restriction rod matching ring is arranged in the main drainage pipe, and the sealing plug direction restriction rod is in up-and-down sliding fit in the direction restriction rod matching ring.

Description of the drawings: the sealing plug direction restriction rod enables the opening process of the magnetic suspension sealing plug to be more stable, and deviation deflection caused by impact of water flow is avoided.

Compared with the prior art, the invention has the beneficial effects that: the rainwater collecting device is reasonable in structural design and convenient to operate, realizes heat insulation treatment on the indoor environment and the outdoor environment of an airplane climate laboratory, and effectively reduces temperature transfer between the indoor environment and the outdoor environment of the rainwater collecting device; the heat preservation and freeze-thaw resistance are good; the extrusion type flexible sealing measure is adopted, so that the device has good sealing performance; has stronger anti-deformation performance and meets the wide temperature range working environment of a climate laboratory.

Drawings

FIG. 1 is a front view of a drainage structure in the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a partial view A of FIG. 1;

FIG. 4 is a partial view B of FIG. 1;

FIG. 5 is a schematic structural view of a second opening and closing mechanism of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a schematic structural view of a third opening and closing mechanism according to the present invention;

FIG. 8 is a schematic view of the internal structure of the magnetic plug of the present invention;

FIG. 9 is a schematic view of a laboratory floor construction at a drainage structure in the present invention;

FIG. 10 is a schematic view of the general layout of the rainwater collection unit of the present invention;

FIG. 11 is a schematic flow chart of the operation of the drainage structure of the present invention;

fig. 12 is a schematic view of the operation of the drainage structure of the present invention.

In the figure, 100-drainage structure, 10-grid ground leakage opening, 101-rainfall sensor, 11-reducer pipe, 20-main drainage pipe, 201-sealing matching ring, 202-spherical ring groove, 203-supporting shaft matching hole, 204-supporting small shaft, 205-worm wheel, 209-belt through groove, 30-first opening and closing mechanism, 31-sealing plug, 32-ejector rod, 320-external thread, 321-sliding restraining ring, 3211-fixing piece, 33-rotating supporting ring, 331-fixing connecting piece, 34-lifting driving ring, 340-internal thread, 35-driven pulley, 36-sealing isolating cover, 361-belt groove, 37-first motor sealing shell, 38-first driving motor, 381-driving pulley, 382-driving belt, 391-upper travel switch, 392-lower travel switch, 40-heat preservation and heat insulation pipe, 41-step reducer section, 411-sealing ring, 42-drainage bent pipe, 50-second opening and closing mechanism, 51-rotary opening and closing circular plate, 511-first electric heating sheet, 52-second motor sealing shell, 53-second driving motor, 531-worm, 60-third opening and closing mechanism, 61-magnetic suspension sealing plug, 611-permanent magnetic sheet, 612-sealing ring, 613-sealing plug direction restraining rod, 614-direction restraining rod matching ring, 62-magnetic coil containing shell, 63-electromagnetic coil, 900-laboratory, 901-gathering drainage pipe, 902-branch drainage pipe, 91-upper reinforced concrete slab, 92-glass foam heat preservation layer, 93-lower reinforced concrete slab, and, 94-plain concrete layer, 95-sand cushion layer and 96-heat insulation cotton.

Detailed Description

The invention will now be described in detail with reference to fig. 1-12, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Example 1

A ground rainwater collecting device for airplane testing is disclosed, as shown in fig. 1 and 10, and comprises a collecting drain pipe 901 laid underground in a laboratory 900, wherein a plurality of branch drain pipes 902 are arranged on two sides of the collecting drain pipe 901, a drainage structure 100 communicated with the branch drain pipes 902 is fixedly arranged in the ground of the laboratory 900, and a U-shaped trap 9011 is arranged in the collecting drain pipe 901 close to a discharge end;

as shown in fig. 1, the drainage structure 100 includes a grid floor drain 10, a rainfall sensor 101 is fixedly arranged on the inner side wall of the grid floor drain 10, a reducer pipe 11 is fixedly connected to the lower end of the grid floor drain 10, the diameter of the reducer pipe 11 gradually decreases from top to bottom, a main drainage pipe 20 is connected to the lower end of the reducer pipe 11, and a sealing plug opening and closing mechanism is arranged on the main drainage pipe 20;

as shown in fig. 1, the sealing plug opening and closing mechanism is a first opening and closing mechanism 30, the first opening and closing mechanism 30 includes a sealing plug 31 which is hermetically fitted in the reducer pipe 11, a push rod 32 which extends downward is fixedly connected to the lower end of the sealing plug 31, the push rod 32 extends into the main drain pipe 20, a sliding restriction ring 321 is slidably fitted on the push rod 32, the sliding restriction ring 321 is fixedly connected to the inner side wall of the main drain pipe 20 by a plurality of fixing pieces 3211, the fixing pieces 3211 are flat and extend radially along the main drain pipe 20, and the sliding restriction ring 321 restricts the push rod 32 to slide only in the up-down direction;

as shown in fig. 1, an upper travel switch 391 is fixedly arranged on the inner side wall of the reducer pipe 11 above the sealing plug 31, and a lower travel switch 392 is fixedly arranged on the inner side wall of the main drain pipe 20 below the sealing plug 31;

as shown in fig. 3, a rotary support ring 33 is fixedly connected to the inner side wall of the main water drainage pipe 20 below the sliding restriction ring 321, the rotary support ring 33 is fixedly connected to the inner side of the main water drainage pipe 20 through a plurality of fixed connection pieces 331, a lifting drive ring 34 is connected to the top of the rotary support ring 33 in a rotating fit manner, an annular driven pulley 35 is fixedly connected to the lifting drive ring 34, an internal thread 340 is formed on the inner side of the lifting drive ring 34, an external thread 320 is formed on the outer side surface of the top rod 32 near the lower end, and the external thread 320 is in threaded transmission connection with the internal thread 340;

a sealing isolation cover 36 is fixedly arranged on the fixed connecting sheet 331, the sealing isolation cover 36 wraps the lower end portions of the rotating support ring 33, the lifting drive ring 34, the driven pulley 35 and the ejector rod 32, and a belt slot 361 for allowing a drive belt 382 to pass through is formed in the side surface of the sealing isolation cover 36.

As shown in fig. 1, a first motor sealing shell 37 is fixedly connected to a side surface of the main drain pipe 20, a first driving motor 38 is fixedly connected to the inside of the first motor sealing shell 37, a driving pulley 381 is fixedly connected to an output shaft of the first driving motor 38, a belt through groove 209 is formed in a position, located on the first motor sealing shell 37, of a side wall of the main drain pipe 20, the driving pulley 381 is in transmission connection with the driven pulley 35 through a driving belt 382, and the driving belt 382 penetrates through the belt through groove 209;

the outer side of the main drainage pipe 20 is sleeved with a heat-insulation pipe 40, and the lower end of the main drainage pipe 20 is hermetically connected with the inner side wall of the heat-insulation pipe 40 through a rubber ring;

as shown in fig. 9, the lower end of the thermal insulation pipe 40 has a stepped reducing section 41, the lower end of the stepped reducing section 41 is connected with a drainage elbow 42, the drainage elbow 42 is connected with the branch drainage pipe 902, and the outer layer of the thermal insulation pipe 40 is sleeved with thermal insulation cotton 96.

As shown in fig. 4, a sealing ring 411 is fixedly arranged at the top of the inner side wall of the step reducer section 41, the inner edge of the top of the sealing ring 411 is chamfered, a sealing matching ring 201 is fixedly arranged at the lower end edge of the main drain pipe 20, the outer edge of the lower end of the sealing matching ring 201 is chamfered, and the chamfered part on the sealing matching ring 201 is in close contact with the chamfered part on the sealing ring 411.

As shown in fig. 9, the laboratory floor construction structure at the drainage structure 100 includes an upper reinforced concrete plate 91, a glass foam insulation layer 92, a lower reinforced concrete plate 93, a plain concrete layer 94, and a sand cushion layer 95 from top to bottom.

In practical application of this embodiment, as shown in fig. 1, when the rain sensor 101 detects that rain water is discharged into the grid floor drain 10, the driving pulley 381 on the output shaft of the first driving motor 38 drives the driven pulley 35 to rotate through the driving belt 382, the driven pulley 35 drives the lifting driving ring 34 to rotate, as shown in fig. 3, the internal thread 340 on the lifting driving ring 34 is in transmission connection with the external thread 320 on the push rod 32 to drive the push rod 32 to move upwards along the sliding constraining ring 321, as shown in fig. 1, the push rod 32 drives the sealing plug 31 to move upwards so that the inside of the reducing pipe 11 is communicated with the inside of the main drain pipe 20, the rain water enters from the grid floor drain 10, flows through the reducing pipe 11 and then enters the main drain pipe 20, and the rain water in the main drain pipe 20 flows through the step reducing section 41 of the thermal insulation pipe 40 and the drain elbow 42 and then enters the main drain pipe 20 In the branch drain pipe 902, as shown in fig. 10, rainwater in a plurality of the branch drain pipes 902 is collected into the collective drain pipe 901 and then is discharged to the outside in a unified manner.

Example 2

The difference from embodiment 1 is that, as shown in fig. 5, the first opening and closing mechanism 30 in embodiment 1 is replaced by a second opening and closing mechanism 50, where the second opening and closing mechanism 50 includes a rotary opening and closing circular plate 51, the inner side wall of the main drain pipe 20 has a spherical annular groove 202, the side surface of the rotary opening and closing circular plate 51 is a spherical structure, and the spherical structure on the side surface of the rotary opening and closing circular plate 51 is connected with the spherical annular groove 202 in a matching manner;

the side wall of the main drainage pipe 20 is provided with support shaft matching holes 203 protruding outwards, two support shaft matching holes 203 are symmetrically arranged about the central axis of the main drainage pipe 20, two side surfaces of the rotary opening and closing circular plate 51 are fixedly connected with support small shafts 204, and the support small shafts 204 are connected with the support shaft matching holes 203 on the corresponding side in a rotating matching manner;

as shown in fig. 6, a second motor sealing shell 52 is fixedly arranged on the side wall of the main water drainage pipe 20, one of the support small shafts 204 extends into the second motor sealing shell 52, a worm wheel 205 is fixedly arranged at one end of the support small shaft 204 extending into the second motor sealing shell 52, a second driving motor 53 is fixedly arranged in the second motor sealing shell 52, a worm 531 is fixedly arranged on an output shaft of the second driving motor 53, and the worm 531 is engaged with the worm wheel 205.

As shown in fig. 5, the rotating opening and closing circular plate 51 is a hollow structure, aerogel blocks are filled in the rotating opening and closing circular plate 51, and a first electric heating plate 511 is fixedly attached to the inner side wall of the rotating opening and closing circular plate 51.

In the practical application process of this embodiment, in an initial state, as shown in fig. 5, the plane of the rotating opening and closing circular plate 51 is perpendicular to the axis of the main drainage pipe 20, so that the main drainage pipe 20 is located at the upper and lower sides of the rotating opening and closing circular plate 51 and sealed and isolated, when the rain sensor 101 detects that rain water is drained into the grid floor drain 10, the worm 531 on the output shaft of the second driving motor 53 drives the worm wheel 205 to rotate, the worm wheel 205 drives the rotating opening and closing circular plate 51 to rotate around the axis of the supporting small shaft 204 through the supporting small shaft 204, the main drainage pipe 20 is located at the upper and lower sides of the rotating opening and closing circular plate 51 and communicated, as shown in fig. 1, the rain water flows through the reducer pipe 11 and then enters the main drainage pipe 20 after entering from the grid floor drain 10, and the rain water in the main drainage pipe 20 flows through the step diameter-reducing section 41 of the thermal insulation pipe 40 and the drainage bent pipe 42 and then enters the sub drainage bent pipe 42 In the pipe 902, as shown in fig. 10, rainwater in a plurality of branch drain pipes 902 is collected into the collective drain pipe 901 and then is uniformly discharged to the outside.

Example 3

The difference from embodiment 1 is that, as shown in fig. 7, the first opening and closing mechanism 30 in embodiment 1 is replaced by a third opening and closing mechanism 60, where the third opening and closing mechanism 60 includes a magnetic levitation sealing plug 61 hermetically fitted in the reducer pipe 11, the magnetic levitation sealing plug 61 is a hollow structure, an aerogel block is filled in the magnetic levitation sealing plug 61, a permanent magnet piece 611 is fixedly embedded in an inner side wall of the magnetic levitation sealing plug 61, as shown in fig. 8, a plurality of permanent magnet pieces 611 are arranged in an annular array along the inner side wall of the magnetic levitation sealing plug 61, and magnetic poles of the permanent magnet pieces 611 face in the same direction;

as shown in fig. 7, an annular magnetic coil housing 62 is fixedly provided on an outer side wall of the reducer pipe 11, and an electromagnetic coil 63 is fixedly provided in the magnetic coil housing 62.

And a sealing ring 612 is embedded in the outer side wall of the magnetic floating sealing plug 61, and a plurality of rings are arranged on the sealing ring 612.

The lower end of the magnetic levitation sealing plug 61 is fixedly provided with a sealing plug direction restriction rod 613 extending downwards, a direction restriction rod fitting ring 614 is arranged in the main drainage pipe 20, and the sealing plug direction restriction rod 613 is in up-and-down sliding fit in the direction restriction rod fitting ring 614.

In the practical application process of this embodiment, in an initial state, as shown in fig. 7, the magnetic floating sealing plug 61 is in sealing contact with the inner side wall of the reducer pipe 11, when the rainfall sensor 101 detects that rainwater is discharged into the grid floor drain 10, the electromagnetic coil 63 is energized, the electromagnetic coil 63 and the permanent magnetic sheet 611 generate the same magnetic pole at the side where they are close to each other, under the action of the magnetic repulsion force, and at the same time, under the direction constraint of the plug direction constraint rod 613, the magnetic floating sealing plug 61 moves upward to make the inside of the reducer pipe 11 communicate with the inside of the main drain pipe 20, as shown in fig. 1, rainwater enters from the grid floor drain 10, flows through the reducer pipe 11 and then enters the main drain pipe 20, rainwater in the main drain pipe 20 flows through the stepped reducer section 41 of the thermal insulation pipe 40 and the drain elbow 42 and then enters the branch drain pipe 902, as shown in fig. 10, rainwater in a plurality of the branch drain pipes 902 is collected into the collective drain pipe 901 and then is uniformly discharged to the outside.

Claims

1. The ground rainwater collecting device for the aircraft test is characterized by comprising a collecting drain pipe (901) laid underground in a laboratory (900), wherein a plurality of branch drain pipes (902) are arranged on two sides of the collecting drain pipe (901), a drain structure (100) communicated with the branch drain pipes (902) is fixedly arranged in the ground of the laboratory (900), and a U-shaped trap (9011) is arranged close to a drain end of the collecting drain pipe (901);

the drainage structure (100) comprises a grid floor drain opening (10), a rainfall sensor (101) is fixedly arranged on the inner side wall of the grid floor drain opening (10), a reducer pipe (11) is fixedly connected to the lower end of the grid floor drain opening (10), the pipe diameter of the reducer pipe (11) is gradually reduced from top to bottom, a main drainage pipe (20) is connected to the lower end of the reducer pipe (11), and a sealing plug opening and closing mechanism is arranged on the main drainage pipe (20);

the sealing plug opening and closing mechanism is a first opening and closing mechanism (30), the first opening and closing mechanism (30) comprises a sealing plug (31) which is in sealing fit with the inside of the reducer pipe (11), the lower end of the sealing plug (31) is fixedly connected with a mandril (32) which extends downwards, the mandril (32) extends into the main drainage pipe (20), a sliding restraint ring (321) is fixedly arranged on the mandril (32), the sliding restraint ring (321) is fixedly connected with the inner side wall of the main drainage pipe (20) through a plurality of fixing pieces (3211), and the sliding restraint ring (321) restrains the mandril (32) to only slide in the vertical direction;

an upper travel switch (391) is fixedly arranged on the inner side wall of the reducer pipe (11) above the sealing plug (31), and a lower travel switch (392) is fixedly arranged on the inner side wall of the main drainage pipe (20) below the sealing plug (31);

the inner side wall of the main drainage pipe (20) is fixedly connected with a rotating support ring (33) below the sliding restraint ring (321), the rotating support ring (33) is fixedly connected with the inner side of the main drainage pipe (20) through a plurality of fixed connecting sheets (331), the top of the rotating support ring (33) is rotatably matched and connected with a lifting drive ring (34), an annular driven pulley (35) is fixedly connected onto the lifting drive ring (34), an internal thread (340) is machined on the inner side of the lifting drive ring (34), an external thread (320) is machined on the outer side surface of the ejector rod (32) close to the lower end, and the external thread (320) is in threaded transmission connection with the internal thread (340);

a first motor sealing shell (37) is fixedly connected to the side surface of the main drainage pipe (20), a first driving motor (38) is fixedly connected in the first motor sealing shell (37), a driving belt pulley (381) is fixedly connected to an output shaft of the first driving motor (38), a belt through groove (209) is formed in the position, located on the first motor sealing shell (37), of the side wall of the main drainage pipe (20), the driving belt pulley (381) is in transmission connection with the driven belt pulley (35) through a driving belt (382), and the driving belt (382) penetrates through the belt through groove (209);

the outer side of the main drainage pipe (20) is sleeved with a heat-insulating pipe (40), and the lower end of the main drainage pipe (20) is hermetically connected with the inner side wall of the heat-insulating pipe (40) through a rubber ring;

the heat preservation thermal-insulated pipe (40) lower extreme has ladder reducing section (41), ladder reducing section (41) lower extreme is connected with drainage return bend (42), drainage return bend (42) with divide drainage pipe (902) to be connected, the outer cover of heat preservation thermal-insulated pipe (40) is equipped with heat preservation cotton (96).

2. The ground rainwater collecting device for the aircraft test according to claim 1, wherein: the fixing piece (3211) is flat and extends radially along the main drain pipe (20).

3. The ground rainwater collecting device for the aircraft test according to claim 1, wherein: the fixed connecting piece (331) is fixedly provided with a sealing isolation cover (36), the lower end parts of the rotating support ring (33), the lifting drive ring (34), the driven belt wheel (35) and the ejector rod (32) are wrapped in the sealing isolation cover (36), and the side surface of the sealing isolation cover (36) is provided with a belt slot (361) for a driving belt (382) to pass through.

4. The ground rainwater collecting device for the aircraft test according to claim 1, wherein: step reducing section (41) inside wall top is fixed and is equipped with sealing washer (411), the inboard edge in sealing washer (411) top carries out the chamfer and handles, main drain pipe (20) lower extreme edge is fixed and is equipped with sealed cooperation ring (201), sealed cooperation ring (201) lower extreme outside edge carries out the chamfer and handles, chamfer portion on the sealed cooperation ring (201) with chamfer portion in close contact with cooperation on sealing washer (411).

5. The ground rainwater collecting device for the aircraft test according to claim 1, wherein: the laboratory ground building structure at the drainage structure (100) comprises an upper reinforced concrete plate (91), a glass foam heat insulation layer (92), a lower reinforced concrete plate (93), a plain concrete layer (94) and a sand cushion layer (95) from top to bottom.

6. The ground rainwater collecting device for the aircraft test according to claim 1, wherein: the first opening and closing mechanism (30) is replaced by a second opening and closing mechanism (50), the second opening and closing mechanism (50) comprises a rotary opening and closing circular plate (51), a spherical annular groove (202) is formed in the inner side wall of the main drainage pipe (20), the side face of the rotary opening and closing circular plate (51) is of a spherical structure, and the spherical structure on the side face of the rotary opening and closing circular plate (51) is connected with the spherical annular groove (202) in a matched mode;

the side wall of the main drainage pipe (20) is provided with support shaft matching holes (203) protruding outwards, two support shaft matching holes (203) are symmetrically arranged about the central axis of the main drainage pipe (20), two side surfaces of the rotary opening and closing circular plate (51) are fixedly connected with support small shafts (204), and the support small shafts (204) are connected with the support shaft matching holes (203) on the corresponding side in a rotating matching manner;

the fixed second motor seal shell (52) that is equipped with on main drain pipe (20) lateral wall, one of them support staff (204) extend to inside second motor seal shell (52), support staff (204) extend to the inside one end of second motor seal shell (52) is fixed and is equipped with worm wheel (205), second motor seal shell (52) internal fixation is equipped with second driving motor (53), fixed worm (531) that are equipped with on the output shaft of second driving motor (53), worm (531) with worm wheel (205) meshing is connected.

7. The ground rainwater collecting device for the aircraft test according to claim 6, wherein: the rotary opening and closing circular plate (51) is of a hollow structure, aerogel blocks are filled in the rotary opening and closing circular plate (51), and a first electric heating piece (511) is fixedly attached to the inner side wall of the rotary opening and closing circular plate (51).

8. The ground rainwater collecting device for the aircraft test according to claim 1, wherein the first opening and closing mechanism (30) is replaced by a third opening and closing mechanism (60), and the ground rainwater collecting device is characterized in that: the third opening and closing mechanism (60) comprises a magnetic suspension sealing plug (61) which is in sealing fit with the inside of the reducer pipe (11), the magnetic suspension sealing plug (61) is of a hollow structure, aerogel blocks are filled in the magnetic suspension sealing plug (61), permanent magnetic sheets (611) are fixedly embedded in the inner side wall of the magnetic suspension sealing plug (61), a plurality of permanent magnetic sheets (611) are arranged in an annular array along the inner side wall of the magnetic suspension sealing plug (61), and the magnetic poles of the permanent magnetic sheets (611) face the same direction;

the outer side wall of the reducer pipe (11) is fixedly provided with an annular magnetic coil containing shell (62), and an electromagnetic coil (63) is fixedly arranged in the magnetic coil containing shell (62).

9. The ground rainwater collecting device for the aircraft test according to claim 8, wherein: and a sealing ring (612) is embedded in the outer side wall of the magnetic suspension sealing plug (61), and a plurality of rings are arranged on the sealing ring (612).

10. The ground rainwater collecting device for the aircraft test according to claim 8, wherein: the lower end of the magnetic suspension sealing plug (61) is fixedly provided with a sealing plug direction restriction rod (613) which extends downwards, a direction restriction rod matching ring (614) is arranged in the main drainage pipe (20), and the sealing plug direction restriction rod (613) is in up-and-down sliding fit in the direction restriction rod matching ring (614).