CN114577504B - Anti-freezing pressure adjusting system for aircraft test and adjusting method thereof - Google Patents
Anti-freezing pressure adjusting system for aircraft test and adjusting method thereof Download PDFInfo
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- CN114577504B CN114577504B CN202210489277.XA CN202210489277A CN114577504B CN 114577504 B CN114577504 B CN 114577504B CN 202210489277 A CN202210489277 A CN 202210489277A CN 114577504 B CN114577504 B CN 114577504B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
Abstract
The invention relates to the technical field of airplane testing, and discloses an anti-freezing pressure adjusting system for airplane testing and an adjusting method thereof, wherein the system comprises a heat-insulating adjusting channel arranged between an outer wall plate and an inner heat-insulating warehouse plate of a laboratory, an anti-freezing pressure adjusting device arranged at the joint of the heat-insulating adjusting channel and the inner heat-insulating warehouse plate, and an anti-freezing shutter device arranged at the joint of the heat-insulating adjusting channel and the outer wall plate of the laboratory; the heat-preservation adjusting channel comprises a first heat-preservation channel and a second heat-preservation channel, wherein one end of the first heat-preservation channel is connected with the outer wall plate of the laboratory, the other end of the first heat-preservation channel is connected with the inner heat-preservation warehouse plate, and the second heat-preservation channel is arranged in the first heat-preservation channel; the central axes of the first heat-preservation channel and the second heat-preservation channel are superposed; the invention can adjust the pressure in the climate environment laboratory for airplane test, realize the protection of the internal thermal insulation warehouse board and avoid the functional damage of the internal thermal insulation warehouse board structure caused by pressure difference.
Description
Technical Field
The invention relates to the technical field of airplane testing, in particular to an anti-freezing pressure adjusting system for airplane testing and an adjusting method thereof.
Background
In the technical field of airplane testing, a climate environment laboratory is used as a large-scale bearing facility for various types of airplane testing, and must accommodate a full-size airplane to provide all-weather and time-unlimited environmental conditions such as high temperature and low temperature, so that the climate environment laboratory is required to have the most basic heat preservation function.
The heat preservation function of the climate environment laboratory is mainly realized by the heat insulation of a laboratory inner wall plate, a terrace and a ceiling plate, and the periphery in the laboratory is spliced by heat preservation wall plates with standard sizes; in some test processes, the pressure of the laboratory can be changed greatly in a short time, the bearing capacity and the shockproof capacity of the heat-insulating wall board of the laboratory are limited, the inner wall structure of the climate environment test room can be damaged, the heat-insulating structure of the inner wall board of the climate environment test room is easy to lose efficacy, and the heat-insulating function of the inner wall of the climate environment test room is reduced.
Therefore, a pressure adjusting device is required to be additionally arranged on the peripheral wall plate of the laboratory, so that the climate laboratory is communicated with the external environment under the condition that the internal pressure in the climate laboratory is instantly increased or instantly reduced and rapidly changed, the pressure of the climate laboratory is adjusted, and the structure of the internal heat preservation warehouse plate is protected.
Disclosure of Invention
The invention solves the technical problems that: the anti-freezing pressure adjusting system for the aircraft test is used for adjusting the pressure in the climate environment laboratory of the aircraft test when the internal pressure in the climate environment laboratory is increased or decreased instantly, so that the protection of an internal thermal insulation warehouse board is realized.
The technical scheme of the invention is as follows: an anti-freezing pressure adjusting system for aircraft testing comprises a heat-insulating adjusting channel arranged between an outer wall plate and an inner heat-insulating storehouse plate of a laboratory, an anti-freezing pressure adjusting device arranged at the joint of the heat-insulating adjusting channel and the inner heat-insulating storehouse plate, and an anti-freezing shutter device arranged at the joint of the heat-insulating adjusting channel and the outer wall plate of the laboratory;
the heat-preservation adjusting channel comprises a first heat-preservation channel and a second heat-preservation channel, wherein one end of the first heat-preservation channel is connected with the outer wall plate of the laboratory, the other end of the first heat-preservation channel is connected with the inner heat-preservation warehouse plate, and the second heat-preservation channel is arranged in the first heat-preservation channel; the central axes of the first heat-preservation channel and the second heat-preservation channel are superposed;
the anti-freezing pressure adjusting device comprises a first adjusting component arranged at the joint of the inner heat-preservation storage plate and the first heat-preservation passage, and a second adjusting component fixedly arranged at the center of the first adjusting component;
the first adjusting assembly is communicated with the first heat-preserving channel; the second adjusting assembly is communicated with the second heat preservation channel;
the first adjusting assembly comprises a rectangular cavity arranged on an inner heat-preservation warehouse plate, a sealing mounting plate arranged at one end, close to the anti-freezing shutter device, of the rectangular cavity, a supporting limiting frame arranged at the other end of the rectangular cavity, a movable adjusting plate movably arranged in the rectangular cavity and located between the sealing mounting plate and the supporting limiting frame, and an elastic adjusting unit connected with the movable adjusting plate and the sealing mounting plate;
the side surface of the movable adjusting plate is in sliding fit with the inner wall of the rectangular cavity;
first ventilation openings are uniformly formed in the side wall of the rectangular cavity and at one end close to the sealing mounting plate; the side wall of the rectangular cavity is uniformly provided with first heating rods;
the elastic adjusting unit comprises a plurality of first elastic adjusters which are uniformly arranged on the sealing mounting plate;
first elasticity adjuster is including the installation sleeve, and one end sets up the first spring element that installation sleeve inside, the other end and adjustable plate are connected sets up on the first spring element center axis and one end connection adjustable plate, the other end run through the telescopic first shock attenuation attenuator of installation to and even cover is established first heating ring on the first shock attenuation attenuator.
Furthermore, a first middle mounting hole is formed in the center of the sealing mounting plate; a second middle mounting hole is formed in the center of the movable adjusting plate;
the second adjusting assembly comprises an air outlet adjusting pipeline which penetrates through the first middle mounting hole and the second middle mounting hole, and a central pressure regulator which is communicated with the air outlet adjusting pipeline and the second heat preservation channel;
the central pressure regulator comprises a first air flow connector communicated with the second heat preservation channel, a second air flow connector communicated with the air outlet regulating pipeline, and a central pressure regulating valve communicated with the first air flow connector and the second air flow connector.
When the pressure in the climate environment laboratory is instantly reduced, external air flow sequentially passes through the anti-freezing shutter device, the second heat preservation channel and the central pressure regulator to enter the interior of the laboratory, then the internal pressure compensation of the climate environment laboratory is realized, and the rapid pressure regulation is realized.
Furthermore, a conical connecting channel is arranged in the first airflow connector;
the central pressure regulating valve comprises a circular pressure regulating cavity, a sealing element, a circular pressure regulating plate, a second elastic regulator and second ventilation ports, wherein the circular pressure regulating cavity is arranged in the middle of the first airflow connector, one end of the circular pressure regulating cavity is communicated with the conical connecting channel, the sealing element is arranged at the other end of the circular pressure regulating cavity, the circular pressure regulating plate is movably arranged in the circular pressure regulating cavity, the second elastic regulator is arranged between the sealing element and the circular pressure regulating plate, and the second ventilation ports are uniformly arranged on the side wall of the circular pressure regulating cavity;
the side surface of the circular pressure regulating plate is in sliding fit with the inner wall of the circular pressure regulating cavity;
the outer wall of the circular pressure regulating cavity is uniformly provided with second heating rods;
the second airflow connector comprises an external communicating pipe which is arranged on the outer ring of the circular pressure regulating cavity in a surrounding mode and one end of the external communicating pipe is connected with the side wall of the first airflow connector, and a reducing connecting pipe which is communicated with the other end of the external communicating pipe and the air outlet regulating pipeline.
When the pressure in the climate environment laboratory is reduced and is smaller than the atmospheric pressure, external air flow pushes the circular pressure regulating plate and compresses the second elastic regulator, and enters the interior of the climate environment laboratory through the second vent and the second air flow connector to complete pressure compensation; the setting of second heating rod can heat circular pressure regulating chamber, avoids circular pressure regulating board by low temperature freezing, effectively improves pressure compensation's sensitivity.
Furthermore, the second elastic regulator comprises a sliding column which is uniformly arranged in the circular pressure regulating cavity and runs through the circular pressure regulating plate, limit stops at two ends of the sliding column, a second spring element which is arranged between the circular pressure regulating plate and the limit stops and is sleeved on the sliding column, and a second damping damper with one end connected with the middle part of the circular pressure regulating plate and the other end connected with the middle part of the sealing element.
The arrangement of the second spring element, the sliding column and the second damping damper can realize the quick control of the circular pressure regulating plate; when the pressure difference is generated between the inside and the outside of the climate environment laboratory, the second spring element is compressed by the thrust generated by the airflow, so that the circular pressure regulating plate moves, and the second ventilation opening is opened.
Further, a second heating ring is uniformly sleeved on the second shock absorption damper; the arrangement of the second heating ring can effectively prevent damping oil liquid in the second damping damper from being frozen, so that the damping coefficient is changed, and the control and adjustment of the second damping damper are not facilitated; the second damping damper can be kept at a proper working temperature through the second heating ring, and the second damping damper can be conveniently controlled.
Furthermore, a pipeline blocking mechanism connected with the air outlet adjusting pipeline is arranged on the supporting and limiting frame;
pipeline blocking mechanism is including fixing the sliding guide who just is located air-out adjusting pipe upper and lower side on supporting spacing, and two activities set up sliding guide is last and can block the blocking board that air-out adjusting pipe said, sets up the mounting in the sliding guide both sides to and one end setting is in blocking board, the other end sets up the flexible subassembly on the mounting.
The pipeline is adjusted to the air-out through setting up of pipeline blocking mechanism and can be blocked the protection, prevents that air-out adjusting pipe department from freezing.
Further, the anti-freezing shutter device comprises a first rectangular frame arranged on an outdoor wallboard of the laboratory, a second rectangular frame arranged at the center of the first rectangular frame, a frame fixing piece used for connecting the first rectangular frame and the second rectangular frame, a first shutter assembly arranged between the first rectangular frame and the second rectangular frame and communicated with the first heat-preservation channel, and a second shutter assembly arranged in the second rectangular frame and communicated with the second heat-preservation channel.
The first shutter assembly is communicated with the first adjusting assembly, and the second shutter assembly is communicated with the second adjusting assembly; the first heat-preservation channel and the second heat-preservation channel are respectively protected by the first shutter assembly and the second shutter assembly, and foreign matters are prevented from being generated inside the first heat-preservation channel and the second heat-preservation channel.
Further, the lower end of the blade of the first louver assembly is close to the outer side of the outer wall plate of the laboratory; the lower ends of the blades of the second shutter assembly are close to the inner side of the outer wall plate of the laboratory;
the blades of the first louver assembly are arranged in a mode that the airflow can be conveyed outwards from the climate environment laboratory; the second louver assembly has vanes that are positioned to direct airflow from the exterior environment into the climate environment laboratory.
Furthermore, heating wires are arranged on the blades of the first louver component and the second louver component. Can effectively avoid first shutter subassembly, second shutter subassembly to be frozen through setting up the heater strip.
A method of adjusting an aircraft test freeze protection pressure regulation system, comprising the steps of:
s1 pressure relief adjustment
When the airplane is tested, if the internal pressure of the climate laboratory is increased, the pressure pushes the movable adjusting plate in the rectangular cavity to compress the first elastic adjuster until the movable adjusting plate moves to the first vent, so that the first heat-preservation channel is communicated with the interior of the climate laboratory, and the airflow in the climate laboratory sequentially passes through the first heat-preservation channel and the anti-freezing shutter device to be discharged; then the internal pressure of the climate laboratory is reduced, the first elastic regulator pushes the movable regulating plate to reset, and the first vent is closed;
if the pressure is instantly increased again, the first elastic regulator compresses again to release the pressure, and the continuous control of the high pressure in the climate laboratory is completed;
s2, pressure boost adjustment
When the airplane is tested, if the internal pressure of the climatic laboratory is reduced, the pressure pushes the circular pressure regulating plate in the circular pressure regulating cavity to compress the second elastic regulator until the circular pressure regulating plate moves to the second vent, so that the second heat preservation channel is communicated with the interior of the climatic laboratory, and the external air flow sequentially passes through the anti-freezing shutter device and the second heat preservation channel and enters the interior of the climatic laboratory; then the internal pressure of the climate laboratory is compensated, the second elastic regulator pushes the circular pressure regulating plate to reset, and the second ventilation opening is closed;
if the pressure is instantly reduced again, the second elastic regulator compresses again to boost pressure, and the continuous control of the low pressure in the climate laboratory is completed.
The invention has the beneficial effects that: the anti-freezing pressure adjusting system for the aircraft test is provided, when the internal pressure in the climate environment laboratory is increased or decreased instantly, the pressure in the climate environment laboratory is adjusted, and the protection of the internal heat insulation warehouse board is realized; according to the invention, when the internal pressure of the climate environment laboratory is increased, the movable adjusting plate is pushed by the internal and external pressure difference through the first adjusting assembly, so that the climate environment laboratory is communicated with the external environment, and pressure relief is realized; the second adjusting assembly can push the circular adjusting plate through the internal and external pressure difference when the internal pressure of the climate environment laboratory is reduced, so that the climate environment laboratory can be subjected to pressure compensation; through setting up second adjusting part in first adjusting part middle part, realize two-way regulation mutual noninterference, accomplish the pressure control to climate environment laboratory.
According to the invention, the heating assemblies are arranged on the first adjusting assembly and the second adjusting assembly, so that the first adjusting assembly and the second adjusting assembly are effectively prevented from being frozen when a climate laboratory simulates a low-temperature environment, the problems that the sensitivity of a circular adjusting plate and a movable adjusting plate is reduced and the movement is not smooth due to freezing are prevented, and the problems that the elastic coefficient and the damping coefficient are changed during freezing are solved; the rectangular cavity and the circular pressure regulating cavity are heated to effectively avoid the freezing in the regulating cavity; the first damping damper and the second damping damper are heated to ensure that the damping oil is at a proper working temperature and ensure the sensitivity of the pressure adjusting device.
Drawings
FIG. 1 is a flow chart of the conditioning method of the present invention;
FIG. 2 is a schematic view of the entire structure of embodiment 1;
FIG. 3 is a schematic structural view of an antifreeze pressure adjusting apparatus according to the embodiment 1;
FIG. 4 is a schematic structural view of a first regulating member in accordance with embodiment 1;
FIG. 5 is a schematic view showing the construction of a first shock absorbing damper of embodiment 1;
FIG. 6 is a schematic view of the structure of a center pressure regulator according to embodiment 1;
FIG. 7 is a schematic view showing a second elastic adjuster of embodiment 1;
FIG. 8 is a schematic structural view of a pipe blocking mechanism according to embodiment 2;
FIG. 9 is a schematic view showing the construction of the antifreeze blind apparatus of the embodiment 3;
the system comprises a heat preservation adjusting channel 1, a heat preservation adjusting channel 10, a first heat preservation channel 11, a second heat preservation channel 11, an anti-freezing pressure adjusting device 2, a first adjusting assembly 20, a second adjusting assembly 21, a rectangular cavity 200, a sealing mounting plate 201, a supporting limiting frame 202, a movable adjusting plate 203, a first ventilation opening 204, a first ventilation opening 205, a first heating rod 206, a mounting sleeve 206, a first spring element 207, a first damping damper 208, a first heating ring 209, an air outlet adjusting pipeline 210, a first airflow connector 211, a second airflow connector 212, a central pressure adjusting valve 214, a first middle mounting hole 2010, a second middle mounting hole 2030, a conical connecting channel 2110, a circular pressure adjusting cavity 2140, 2141-a circular pressure-regulating plate, 2142-a second ventilation opening, 2143-a sliding column, 2144-a limit stop, 2145-a second spring element, 2146-a second shock-absorbing damper, 2147-a second heating rod, 2148-a sealing element, 2149-a second heating ring, 2130-an external communicating pipe, 2131-a variable diameter connecting pipe, 22-a pipeline blocking mechanism, 220-a sliding guide rail, 221-a blocking plate, 222-a fixing element, 223-a telescopic component, 3-an anti-freezing shutter device, 30-a first rectangular frame, 31-a second rectangular frame, 32-a frame fixing element, 33-a first shutter component, and 34-a second shutter component.
Detailed Description
Example 1
As shown in fig. 2, an anti-freezing pressure adjusting system for aircraft testing comprises an insulation adjusting channel 1 arranged between an outer wall board and an inner insulation warehouse board of a laboratory, an anti-freezing pressure adjusting device 2 arranged at the joint of the insulation adjusting channel 1 and the inner insulation warehouse board, and an anti-freezing shutter device 3 arranged at the joint of the insulation adjusting channel 1 and the outer wall board of the laboratory;
as shown in fig. 2, the heat-preservation regulating passage 1 includes a first heat-preservation passage 10 having one end connected to an external wall board of the laboratory and the other end connected to an internal heat-preservation warehouse board, and a second heat-preservation passage 11 disposed inside the first heat-preservation passage 10; the central axes of the first heat-preservation passage 10 and the second heat-preservation passage 11 are overlapped;
as shown in fig. 3, the antifreeze pressure adjusting apparatus 2 includes a first adjusting assembly 20 disposed at a junction of the inner insulation storage plate and the first insulation passage 10, and a second adjusting assembly 21 fixedly installed at a center of the first adjusting assembly 20;
the first adjusting assembly 20 is communicated with the first heat-preservation passage 10; the second adjusting component 21 is communicated with the second heat preservation channel 11;
as shown in fig. 4, the first adjusting assembly 20 includes a rectangular cavity 200 disposed on the inner thermal insulation storehouse plate, a sealing mounting plate 201 disposed at one end of the rectangular cavity 200 close to the anti-freezing shutter device 3, a supporting limiting frame 202 disposed at the other end of the rectangular cavity 200, a movable adjusting plate 203 movably disposed inside the rectangular cavity 200 and located between the sealing mounting plate 201 and the supporting limiting frame 202, and an elastic adjusting unit connecting the movable adjusting plate 203 and the sealing mounting plate 201;
the side surface of the movable adjusting plate 203 is in sliding fit with the inner wall of the rectangular cavity 200;
the elastic adjusting unit comprises 4 first elastic adjusters which are uniformly arranged on the sealing mounting plate 201;
as shown in fig. 5, the first elastic adjuster includes a mounting sleeve 206, a first spring element 207 having one end disposed inside the mounting sleeve 206 and the other end connected to the movable adjusting plate 203, a first shock absorbing damper 208 disposed on the central axis of the first spring element 207 and having one end connected to the movable adjusting plate 203 and the other end penetrating through the mounting sleeve 206, and a first heating ring 209 uniformly fitted on the first shock absorbing damper 208.
A first middle mounting hole 2010 is formed in the center of the sealing mounting plate 201; a second middle mounting hole 2030 is formed in the center of the movable adjusting plate 203;
as shown in fig. 5, the second adjusting assembly 21 includes an air outlet adjusting duct 210 passing through the first central mounting hole 2010 and the second central mounting hole 2030, and a central pressure regulator communicating the air outlet adjusting duct 210 with the second thermal insulation passage 11;
as shown in fig. 6, the central pressure regulator includes a first air flow connector 211 communicated with the second heat-insulating passage 11, a second air flow connector 212 communicated with the outlet air regulating duct 210, and a central pressure regulating valve 214 communicated with the first air flow connector 211 and the second air flow connector 212.
A conical connecting channel 2110 is arranged inside the first air flow connector 211;
the central pressure regulating valve 214 comprises a circular pressure regulating cavity 2140 arranged in the middle of the first air flow connector 211 and one end of the circular pressure regulating cavity 2140 is communicated with the conical connecting channel 2110, a sealing element 2148 arranged at the other end of the circular pressure regulating cavity 2140, a circular pressure regulating plate 2141 movably arranged in the circular pressure regulating cavity 2140, a second elastic regulator arranged between the sealing element 2148 and the circular pressure regulating plate 2141, and second ventilation openings 2142 uniformly arranged on the side wall of the circular pressure regulating cavity 2140;
the side surface of the circular pressure regulating plate 2141 is in sliding fit with the inner wall of the circular pressure regulating cavity 2140;
the outer wall of the circular pressure regulating cavity 2140 is uniformly provided with second heating rods 2147;
the second airflow connector 212 includes an external communicating pipe 2130 surrounding the outer ring of the circular pressure regulating cavity 2140 and having one end connected to the side wall of the first airflow connector 211, and a variable diameter connecting pipe 2131 communicating the other end of the external communicating pipe 2130 with the outlet air regulating pipeline 210.
As shown in fig. 7, the second elastic adjuster includes a sliding post 2143 uniformly disposed in the circular pressure adjusting cavity 2140 and penetrating through the circular pressure adjusting plate 2141, a limit stop 2144 disposed at both ends of the sliding post 2143, a second spring element 2145 disposed between the circular pressure adjusting plate 2141 and the limit stop 2144 and sleeved on the sliding post 2143, and a second damping damper 2146 having one end connected to the middle of the circular pressure adjusting plate 2141 and the other end connected to the middle of the sealing member 2148.
The second shock absorbing damper 2146 is uniformly sleeved with a second heating ring 2149.
The anti-freeze louver device 3, the second shock absorbing damper 2146, the second heating ring 2149, the second heating rod 2147, the first shock absorbing damper 208, the first heating ring 209, and the first heating rod 205 are commercially available components, and the specific product type can be selected by those skilled in the art as needed.
Example 2
The difference from example 1 is:
as shown in fig. 8, the supporting and limiting frame 202 is provided with a duct blocking mechanism 22 connected to the air outlet adjusting duct 210;
Example 3
The difference from example 2 is:
as shown in fig. 9, the freeze-proofing blind apparatus 3 includes a first rectangular frame 30 disposed on an outer wall panel of a laboratory, a second rectangular frame 31 disposed at the center of the first rectangular frame 30, a frame fixing member 32 for connecting the first rectangular frame 30 and the second rectangular frame 31, a first blind assembly 33 disposed between the first rectangular frame 30 and the second rectangular frame 31 and communicating with the first heat-insulating passage 10, and a second blind assembly 34 disposed in the second rectangular frame 31 and communicating with the second heat-insulating passage 11.
The lower ends of the blades of the first louver assemblies 33 are close to the outer side of the laboratory wall panel; the lower ends of the blades of the second louver assembly 34 are close to the inner side of the outer wall board of the laboratory.
Heating wires are arranged on the blades of the first louver assembly 33 and the second louver assembly 34.
Example 4
As shown in fig. 1, the present embodiment describes an adjusting method of the antifreeze pressure adjusting system based on the aircraft test of embodiment 1, which includes the following steps:
s1 pressure relief adjustment
When the airplane is tested, if the internal pressure of the climate laboratory is increased, the pressure pushes the movable adjusting plate 203 in the rectangular cavity 200 to compress the first elastic adjuster until the movable adjusting plate 203 moves to the first ventilation opening 204, so that the first heat preservation channel 10 is communicated with the interior of the climate laboratory, and the airflow in the climate laboratory sequentially passes through the first heat preservation channel 10 and the anti-freezing shutter device 3 to be discharged; then the internal pressure of the climate laboratory is reduced, the first elastic regulator pushes the movable regulating plate 203 to reset, and the first ventilation opening 204 is closed;
if the pressure is instantly increased again, the first elastic regulator compresses again to release the pressure, and the continuous control of the high pressure in the climate laboratory is completed;
s2 pressure boost adjustment
When the airplane is tested, if the internal pressure of the climate laboratory is reduced, the pressure pushes the circular pressure regulating plate 2141 in the circular pressure regulating cavity 2140, the second elastic regulator is compressed until the circular pressure regulating plate 2141 moves to the second ventilation opening 2142, the second heat preservation channel 11 is communicated with the interior of the climate laboratory, and external air flow sequentially passes through the anti-freezing shutter device 3 and the second heat preservation channel 11 and enters the interior of the climate laboratory; then, the internal pressure of the climate laboratory is compensated, the second elastic regulator pushes the circular pressure regulating plate 2141 to reset, and the second ventilation opening 2142 is closed;
if the pressure is instantly reduced again, the second elastic regulator compresses again to boost pressure, and the continuous control of the low pressure in the climate laboratory is completed.
Claims (9)
1. An anti-freezing pressure adjusting system for aircraft testing is characterized by comprising a heat-insulating adjusting channel (1) arranged between an outer wall board and an inner heat-insulating warehouse board of a laboratory, an anti-freezing pressure adjusting device (2) arranged at the joint of the heat-insulating adjusting channel (1) and the inner heat-insulating warehouse board, and an anti-freezing shutter device (3) arranged at the joint of the heat-insulating adjusting channel (1) and the outer wall board of the laboratory;
the heat-preservation adjusting channel (1) comprises a first heat-preservation channel (10) and a second heat-preservation channel (11), wherein one end of the first heat-preservation channel is connected with an outer wall plate of the laboratory, the other end of the first heat-preservation channel is connected with an inner heat-preservation warehouse plate, and the second heat-preservation channel is arranged in the first heat-preservation channel (10); the central axes of the first heat-preservation channel (10) and the second heat-preservation channel (11) are overlapped;
the anti-freezing pressure adjusting device (2) comprises a first adjusting component (20) arranged at the joint of the inner heat-preservation warehouse plate and the first heat-preservation passage (10), and a second adjusting component (21) fixedly arranged at the center of the first adjusting component (20);
the first adjusting component (20) is communicated with the first heat preservation channel (10); the second adjusting component (21) is communicated with the second heat preservation channel (11);
the first adjusting component (20) comprises a rectangular cavity (200) arranged on an inner heat-preservation warehouse plate, a sealing mounting plate (201) arranged at one end, close to the anti-freezing shutter device (3), of the rectangular cavity (200), a supporting limiting frame (202) arranged at the other end of the rectangular cavity (200), a movable adjusting plate (203) movably arranged in the rectangular cavity (200) and located between the sealing mounting plate (201) and the supporting limiting frame (202), and an elastic adjusting unit connected with the movable adjusting plate (203) and the sealing mounting plate (201);
the side surface of the movable adjusting plate (203) is in sliding fit with the inner wall of the rectangular cavity (200);
one end of the side wall of the rectangular cavity (200) close to the sealing mounting plate (201) is uniformly provided with first ventilation openings (204); the side wall of the rectangular cavity (200) is uniformly provided with first heating rods (205);
the elastic adjusting unit comprises a plurality of first elastic adjusters which are uniformly arranged on the sealing mounting plate (201);
the first elastic adjuster comprises a mounting sleeve (206), a first spring element (207) with one end arranged in the mounting sleeve (206) and the other end connected with a movable adjusting plate (203), a first shock absorption damper (208) which is arranged on the central axis of the first spring element (207), one end connected with the movable adjusting plate (203) and the other end penetrating through the mounting sleeve (206), and a first heating ring (209) which is uniformly sleeved on the first shock absorption damper (208);
a first middle mounting hole (2010) is formed in the center of the sealing mounting plate (201); a second middle mounting hole (2030) is formed in the center of the movable adjusting plate (203);
the second adjusting component (21) comprises an air outlet adjusting pipeline (210) which penetrates through the first middle mounting hole (2010) and the second middle mounting hole (2030), and a central pressure regulator which is communicated with the air outlet adjusting pipeline (210) and the second heat preservation channel (11);
the central pressure regulator comprises a first air flow connector (211) communicated with the second heat preservation channel (11), a second air flow connector (212) communicated with the air outlet regulating pipeline (210), and a central pressure regulating valve (214) communicated with the first air flow connector (211) and the second air flow connector (212).
2. The antifreeze pressure adjustment system for testing aircraft of claim 1, wherein said first air flow connector (211) is internally provided with a tapered connecting channel (2110);
the central pressure regulating valve (214) comprises a circular pressure regulating cavity (2140) which is arranged in the middle of the first airflow connector (211) and one end of which is communicated with the conical connecting channel (2110), a sealing element (2148) which is arranged at the other end of the circular pressure regulating cavity (2140), a circular pressure regulating plate (2141) which is movably arranged in the circular pressure regulating cavity (2140), a second elastic regulator which is arranged between the sealing element (2148) and the circular pressure regulating plate (2141), and second ventilation openings (2142) which are uniformly arranged on the side wall of the circular pressure regulating cavity (2140);
the side surface of the circular pressure regulating plate (2141) is in sliding fit with the inner wall of the circular pressure regulating cavity (2140);
second heating rods (2147) are uniformly arranged on the outer wall of the circular pressure regulating cavity (2140);
the second airflow connector (212) comprises an external communicating pipe (2130) which is arranged around the outer ring of the circular pressure regulating cavity (2140) in a surrounding mode and one end of which is connected with the side wall of the first airflow connector (211), and a reducing connecting pipe (2131) which is used for communicating the other end of the external communicating pipe (2130) with the air outlet regulating pipeline (210).
3. The antifreeze pressure adjusting system of claim 2, wherein the second elastic adjuster comprises a sliding column (2143) uniformly arranged in the circular pressure adjusting cavity (2140) and penetrating through the circular pressure adjusting plate (2141), limit stops (2144) arranged at two ends of the sliding column (2143), a second spring element (2145) arranged between the circular pressure adjusting plate (2141) and the limit stops (2144) and sleeved on the sliding column (2143), and a second damping damper (2146) having one end connected with the middle of the circular pressure adjusting plate (2141) and the other end connected with the middle of the sealing member (2148).
4. The antifreeze pressure adjusting system for testing aircraft according to claim 3, wherein said second shock absorber damper (2146) is uniformly fitted with a second heating ring (2149).
5. The aircraft test antifreeze pressure regulating system of claim 1, wherein the support limiting frame (202) is provided with a pipeline blocking mechanism (22) connected with the air outlet regulating pipeline (210);
pipeline blocking mechanism (22) are in including fixing sliding guide (220) that support spacing (202) and be located air-out regulation pipeline (210) upper and lower side, two activities set up sliding guide (220) are gone up and can be blocked air-out regulation pipeline (210) block board (221), set up mounting (222) in sliding guide (220) both sides to and one end sets up block board (221), telescopic component (223) of the other end setting on mounting (222).
6. The antifreeze pressure adjusting system for aircraft testing as set forth in claim 1, wherein said antifreeze louver device (3) comprises a first rectangular frame (30) disposed on an outer wall panel of a laboratory, a second rectangular frame (31) disposed at a center of said first rectangular frame (30), a bezel fixing member (32) for connecting said first and second rectangular frames (30, 31), a first louver assembly (33) disposed between said first and second rectangular frames (30, 31) and communicating with a first insulation passage (10), and a second louver assembly (34) disposed within said second rectangular frame (31) and communicating with a second insulation passage (11).
7. The antifreeze pressure regulating system for testing aircraft of claim 6, wherein the lower end of the blade of said first louver assembly (33) is close to the outer side of the outer wall panel of the laboratory room; the lower ends of the blades of the second shutter assembly (34) are close to the inner side of the outer wall board of the laboratory room.
8. The antifreeze pressure adjustment system for aircraft testing according to claim 7, wherein the first louver assembly (33) and the second louver assembly (34) are provided with heating wires on the blades thereof.
9. The method for adjusting an aircraft test antifreeze pressure adjustment system according to any one of claims 1 to 8, comprising the steps of:
s1 pressure relief adjustment
When the airplane is tested, if the internal pressure of the climate laboratory is increased, the pressure pushes a movable adjusting plate (203) in a rectangular cavity (200), a first elastic adjuster is compressed until the movable adjusting plate (203) moves to a first ventilation opening (204), so that a first heat-preservation channel (10) is communicated with the interior of the climate laboratory, and airflow in the climate laboratory sequentially passes through the first heat-preservation channel (10) and an anti-freezing shutter device (3) to be discharged; then the internal pressure of the climate laboratory is reduced, the first elastic regulator pushes the movable regulating plate (203) to reset, and the first ventilation opening (204) is closed;
if the pressure is instantly increased again, the first elastic regulator compresses again to release the pressure, and the continuous control of the high pressure in the climate laboratory is completed;
s2 pressure boost adjustment
When the airplane is tested, if the internal pressure of the climate laboratory is reduced, the pressure pushes the circular pressure regulating plate (2141) in the circular pressure regulating cavity (2140), the second elastic regulator is compressed until the circular pressure regulating plate (2141) moves to the second ventilation opening (2142), the second heat preservation channel (11) is communicated with the interior of the climate laboratory, and external air flow sequentially passes through the anti-freezing shutter device (3) and the second heat preservation channel (11) and enters the interior of the climate laboratory; then the internal pressure of the climate laboratory is compensated, the second elastic regulator pushes the circular pressure regulating plate (2141) to reset, and the second vent (2142) is closed;
if the pressure is instantly reduced again, the second elastic regulator compresses again to boost pressure, and the continuous control of the low pressure in the climate laboratory is completed.
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| CN114577504A (en) | 2022-06-03 |
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