CN210707960U - Pneumatic conveying type gravity center adjusting device - Google Patents
Pneumatic conveying type gravity center adjusting device Download PDFInfo
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- CN210707960U CN210707960U CN201921569696.4U CN201921569696U CN210707960U CN 210707960 U CN210707960 U CN 210707960U CN 201921569696 U CN201921569696 U CN 201921569696U CN 210707960 U CN210707960 U CN 210707960U
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Abstract
The utility model belongs to the technical field of the aviation flight test, a formula focus adjusting device is carried to atmospheric pressure is related to. The device includes: the device comprises a gas leading port, a gas leading valve, a first three-way reversing valve, a second three-way reversing valve, a gas exhaust port, a front tank group, a rear tank group and a controller. The utility model discloses a research novel focus governing system provides simpler, reliable technical scheme.
Description
Technical Field
The utility model belongs to the technical field of the aviation flight test, a formula focus adjusting device is carried to atmospheric pressure is related to.
Background
In the field of flight tests, in order to improve the test flight efficiency of transport airplanes, a gravity center adjusting system is required to be developed and modified frequently, the longitudinal gravity center of the airplane is changed in real time by adjusting the liquid quality between a front tank set and a rear tank set in flight, and tests of various weight gravity center combination conditions can be completed in one flight. In the flight test of the transport aircraft, a gravity center adjusting system becomes a necessary test system. Traditional focus governing system need install an electric centrifugal pump additional on every jar body, uses many sets of pipelines to carry liquid between preceding, back jar group, and system's pipeline and annex are various, the liquid centrifugal pump reliability is not high, system's power demand is great, and these problems lead to focus governing system poor reliability often, use the maintenance difficulty. The utility model discloses utilize the pressure differential between aircraft environmental control system pressurized-air and the external atmosphere to provide power, utilize electric valve to change the atmospheric pressure direction, drive the liquid front and back regulation between the jar group, avoided the a great deal of problem of traditional focus governing system design.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the pneumatic conveying type gravity center adjusting device provides a simpler and more reliable technical scheme for developing a novel gravity center adjusting system.
The utility model provides a formula focus adjusting device is carried to atmospheric pressure, include: the device comprises a gas introducing port, a gas introducing valve, a first three-way reversing valve, a second three-way reversing valve, a gas exhaust port, a front tank group, a rear tank group and a controller;
the inlet of the bleed port is used for leading pressurized air with proper pressure of an aircraft environmental control system, the outlet of the bleed port is respectively communicated with the inlet of a first three-way reversing valve and the inlet of a second three-way reversing valve, the outlet of the first three-way reversing valve and the outlet of the second three-way reversing valve are both communicated with the inlet of an exhaust port, the inlet and the outlet of the first three-way reversing valve are communicated with the air inlet and the outlet of a front tank set, and the inlet and the outlet of the second three-way reversing valve are communicated with the air inlet and the outlet of a rear tank set; the liquid inlet and outlet of the front tank group is communicated with the liquid inlet and outlet of the rear tank group; the controller is respectively connected with the control end of the bleed valve, the control end of the first three-way reversing valve and the control end of the second three-way reversing valve.
Further, the apparatus further comprises: a transfusion valve; the liquid inlet and outlet of the front tank group is communicated with the liquid inlet and outlet of the rear tank group through a transfusion valve;
wherein, the controller is connected with the control end of the infusion valve; and controlling the opening and closing of the bleed valve, the first three-way reversing valve, the second three-way reversing valve and the infusion valve.
Further, the controller is configured to:
and when the controller controls the opening of the gas-guiding valve, controls the communication between the inlet of the first three-way reversing valve and the inlet and the outlet of the first three-way reversing valve, controls the opening of the infusion valve, and controls the communication between the inlet and the outlet of the second three-way reversing valve, the infusion is carried out from the front tank group to the rear tank group.
Further, the controller controls the air-introducing valve to be opened, controls the inlet of the second three-way reversing valve to be communicated with the inlet and the outlet of the second three-way reversing valve, controls the infusion valve to be opened, and controls the inlet and the outlet of the first three-way reversing valve to be communicated with the outlet of the first three-way reversing valve, so that infusion is carried out from the rear tank group to the front tank group.
Further, when the controller controls the air-bleed valve to be closed, the ports of the second three-way reversing valve to be closed, the infusion valve to be closed and the ports of the first three-way reversing valve to be closed, the rear tank group and the front tank group keep the liquid capacity of the rear tank group and the front tank group.
Further, the method also comprises the following steps: an airtight cabin;
the air-entraining valve, the first three-way reversing valve, the second three-way reversing valve, the front tank set, the infusion valve and the rear tank set are all arranged in the airtight cabin, and the air-entraining port and the air exhaust port extend out of the airtight cabin.
Further, the air guide valve is an electric ball valve.
Furthermore, the first three-way reversing valve and the second three-way reversing valve are the same L-shaped three-way electric ball valve.
Furthermore, the front tank group and the rear tank group are sealed liquid tank groups, are respectively formed by connecting a plurality of pressure-resistant liquid storage tanks in parallel and are respectively arranged at the front part and the rear part of the airtight cabin.
Further, the transfusion valve is an electric ball valve.
The utility model has the advantages that:
liquid is conveyed among the tank groups by utilizing air pressure, so that the pump-free conveying of the liquid is realized, and the inherent reliability and maintainability of the system are improved;
the gas circuit valve control technology is utilized to change the flow direction of liquid, only one set of pipeline is needed for liquid reciprocating delivery, the components of liquid system accessories and pipelines are simplified, the sealing performance of the liquid pipeline is favorably ensured, and the system safety is improved;
the pump-free driving avoids the requirement of high-power electricity consumption, and improves the economical efficiency of system development, modification and use.
Drawings
FIG. 1 is a schematic diagram of a pneumatic conveying method for liquid between tank groups in an airtight cabin of an aircraft according to the present invention, wherein 1-the airtight cabin, 2-a gas-introducing port, 3-a gas-introducing valve, 4-a first three-way reversing valve, 5-a second three-way reversing valve, 6-a gas outlet, 7-a front tank group, 8-a liquid-conveying valve, and 9-a rear tank group.
Detailed Description
The pressurized air is guided from the aircraft environmental control system, the pressurization or exhaust working mode of the front tank group and the rear tank group is changed by using the electric reversing valve, and the exhaust outlet is communicated with the external atmosphere, so that the liquid is driven to flow between the tank groups by using the air pressure difference of the liquid levels of the front tank group and the rear tank group.
As shown in figure 1, the air pressure conveying system for liquid among the tank groups in the airtight cabin comprises the airtight cabin 1, a gas introducing port 2, a gas introducing valve 3, a first three-way reversing valve 4, a second three-way reversing valve 5, an exhaust port 6, a front tank group 7, a transfusion valve 8 and a rear tank group 9.
The airtight cabin 1 is an airtight passenger (cargo) cabin of a transport type airplane.
The bleed port 2 is a bleed port on a boost pipeline of a passenger (cargo) cabin of an aircraft environmental control system, and the bleed port is modified on an original aircraft pipeline to ensure that the bleed pressure meets the use requirement.
The bleed valve 3 is an electric ball valve, and the pressurized air is switched on or off according to a control instruction.
The three-way reversing valve 4 and the three-way reversing valve 5 are identical L-shaped three-way electric ball valves, two mutually orthogonal interfaces are switched on or off according to a control instruction, and the two through interfaces cannot be communicated.
The front tank group 7 and the rear tank group 9 are sealed liquid tank groups, are respectively formed by connecting a plurality of pressure-resistant liquid storage tanks in parallel and are respectively arranged at the front part and the rear part of the airtight cabin.
The transfusion valve 8 is an electric ball valve, and is connected or disconnected with the front tank group and the rear tank group according to a control instruction.
According to the figure 1, a front tank group 7, a transfusion valve 8, a rear tank group 9 and a liquid pipeline are arranged in the air-tight cabin 1 of the airplane in a matching way to form a liquid conveying system.
According to the figure 1, an air inlet 2, an air inlet valve 3, a first three-way reversing valve 4, a second three-way reversing valve 5 and an air outlet 6 are arranged on an airplane in a matching way to form an air pressurization system.
The pressurized air with proper pressure of the airplane environment control system is guided from the air guide port 2, the liquid tank group is pressurized through the air guide valve 3, the air inlet/exhaust direction is changed through the first three-way reversing valve 4 and the second three-way reversing valve 5, and meanwhile, the forward/backward conveying of liquid can be realized by connecting the liquid conveying valve 8.
Forward transfusion: the air enters the rear tank group 9 through the air-entraining port 2, the air-entraining valve 3, the inlet 4a of the first three-way reversing valve and the inlet and outlet 4c of the three-way reversing valve; air at the upper part of the front tank group 7 passes through an inlet and an outlet 5c of the second three-way reversing valve and an outlet 5b of the second three-way reversing valve and then is discharged from the exhaust port 6; liquid flows from the rear tank group 9 to the front tank group 7 through the transfusion valve 8; when the first three-way reversing valve 4 or the second three-way reversing valve 5 is opened, only one passage can exist in the interior.
Backward transfusion: the air-increasing enters the front tank group 7 through the air-introducing port 2, the air-introducing valve 3, the inlet 5a of the second three-way reversing valve and the inlet and outlet 5c of the second three-way reversing valve; air at the upper part of the rear tank group 9 passes through an inlet and an outlet 4c of the first three-way reversing valve and an outlet 4b of the first three-way reversing valve and then is discharged from an exhaust port 6; liquid flows from the front tank group 7 to the rear tank group 9 through the transfusion valve 8; when the first three-way reversing valve 4 or the second three-way reversing valve 5 is opened, only one passage can exist in the interior.
The utility model is used for transportation class aircraft focus governing system's development and repacking. In the field of flight tests, in order to improve the test flight efficiency of transport airplanes, a gravity center adjusting system is required to be developed and modified frequently, and the longitudinal gravity center of the airplane is changed in real time by adjusting the quality of liquid between a front tank set and a rear tank set in flight. The utility model provides an air pressure conveying method of liquid between tank groups in an aircraft airtight cabin, which provides a simpler and reliable technical scheme for developing a novel gravity center adjusting system.
Claims (10)
1. An air pressure conveying type gravity center adjusting device, comprising: the device comprises a gas introducing port, a gas introducing valve, a first three-way reversing valve, a second three-way reversing valve, a gas exhaust port, a front tank group, a rear tank group and a controller;
the inlet of the bleed port is used for leading pressurized air with proper pressure of an aircraft environmental control system, the outlet of the bleed port is respectively communicated with the inlet of a first three-way reversing valve and the inlet of a second three-way reversing valve, the outlet of the first three-way reversing valve and the outlet of the second three-way reversing valve are both communicated with the inlet of an exhaust port, the inlet and the outlet of the first three-way reversing valve are communicated with the air inlet and the outlet of a front tank set, and the inlet and the outlet of the second three-way reversing valve are communicated with the air inlet and the outlet of a rear tank set; the liquid inlet and outlet of the front tank group is communicated with the liquid inlet and outlet of the rear tank group; the controller is respectively connected with the control end of the bleed valve, the control end of the first three-way reversing valve and the control end of the second three-way reversing valve.
2. The apparatus of claim 1, further comprising: a transfusion valve; the liquid inlet and outlet of the front tank group is communicated with the liquid inlet and outlet of the rear tank group through a transfusion valve;
wherein, the controller is connected with the control end of the infusion valve; and controlling the opening and closing of the bleed valve, the first three-way reversing valve, the second three-way reversing valve and the infusion valve.
3. The apparatus of claim 2, wherein the controller is configured to:
and when the controller controls the opening of the gas-guiding valve, controls the communication between the inlet of the first three-way reversing valve and the inlet and the outlet of the first three-way reversing valve, controls the opening of the infusion valve, and controls the communication between the inlet and the outlet of the second three-way reversing valve, the infusion is carried out from the front tank group to the rear tank group.
4. The apparatus of claim 2, wherein the controller controls the bleed valve to open, controls the inlet of the second three-way directional valve to communicate with the inlet and outlet of the second three-way directional valve, controls the infusion valve to open, controls the inlet and outlet of the first three-way directional valve to communicate with the outlet of the first three-way directional valve, and infuses the fluid from the rear canister set to the front canister set.
5. The apparatus of claim 2, wherein the rear tank group and the front tank group maintain their own liquid capacities while the controller controls the bleed valve to be turned off, controls the respective ports of the second three-way directional valve to be turned off, controls the infusion valve to be turned off, and controls the respective ports of the first three-way directional valve to be turned off.
6. The apparatus of claim 2, further comprising: an airtight cabin;
the air-entraining valve, the first three-way reversing valve, the second three-way reversing valve, the front tank set, the infusion valve and the rear tank set are all arranged in the airtight cabin, and the air-entraining port and the air exhaust port extend out of the airtight cabin.
7. The apparatus of claim 1, wherein the bleed valve is a motorized ball valve.
8. The device of claim 1, wherein the first three-way directional valve and the second three-way directional valve are identical L-shaped three-way electric ball valves.
9. The apparatus of claim 1, wherein the front tank group and the rear tank group are sealed liquid tank groups each composed of a plurality of pressure-resistant liquid tanks connected in parallel and installed at the front and rear portions of the airtight chamber, respectively.
10. The apparatus of claim 2, wherein the infusion valve is a motorized ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569696.4U CN210707960U (en) | 2019-09-20 | 2019-09-20 | Pneumatic conveying type gravity center adjusting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569696.4U CN210707960U (en) | 2019-09-20 | 2019-09-20 | Pneumatic conveying type gravity center adjusting device |
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| Publication Number | Publication Date |
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| CN210707960U true CN210707960U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921569696.4U Active CN210707960U (en) | 2019-09-20 | 2019-09-20 | Pneumatic conveying type gravity center adjusting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849430A (en) * | 2021-01-13 | 2021-05-28 | 哈尔滨工业大学 | Gravity center allocation control method based on single water tank liquid level monitoring |
-
2019
- 2019-09-20 CN CN201921569696.4U patent/CN210707960U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849430A (en) * | 2021-01-13 | 2021-05-28 | 哈尔滨工业大学 | Gravity center allocation control method based on single water tank liquid level monitoring |
| CN112849430B (en) * | 2021-01-13 | 2022-08-26 | 哈尔滨工业大学 | Gravity center allocation control method based on single water tank liquid level monitoring |
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