CN114275169A - Low-boiling-point working medium pressurization supply system and supply method - Google Patents
Low-boiling-point working medium pressurization supply system and supply method Download PDFInfo
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- CN114275169A CN114275169A CN202111627257.6A CN202111627257A CN114275169A CN 114275169 A CN114275169 A CN 114275169A CN 202111627257 A CN202111627257 A CN 202111627257A CN 114275169 A CN114275169 A CN 114275169A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a low-boiling point working medium pressurization supply system, which comprises a storage system, a pressurization system and a flow regulation system, wherein the storage system is used for storing working medium; the storage system comprises an overload storage tank (7) and a split-tank storage tank (2) which are communicated with each other, wherein a low-boiling-point working medium is stored in the overload storage tank; the supercharging system is connected with the overload storage tank (7) and the split-tank storage tank (2), the flow regulating system is connected with the overload storage tank (7), the low-boiling-point working medium flows into the overload storage tank (7) by pressurizing the split-tank storage tank (2), and the low-boiling-point working medium is supplied out from the overload storage tank (7) through the flow regulating system under the action of pressure. The working medium self-pressurization scheme is adopted, so that the structure and the weight of the aircraft pressurization system are reduced; adopt the branch case to supply, under aircraft overload, maneuver the condition, the overload storage tank is full case state, guarantees to supply to all to be pure liquid phase supply in the working process.
Description
Technical Field
The invention belongs to the technical field of aircrafts, and relates to a low-boiling-point working medium pressurizing and supplying system and a supplying method.
Background
At present, two working media with low boiling points are commonly used, one is carbon dioxide, and the other is liquid hydrogen.
The liquid carbon dioxide is a low boiling point working medium, the melting point is-56.6 ℃ (527kPa), and the boiling point is-78.5 ℃.
The carbon dioxide is a colorless, odorless, non-combustion-supporting and non-combustible gas at normal temperature and normal pressure; safe and nontoxic, has good thermal stability and chemical stability, and does not decompose harmful gas even at high temperature; the heat transfer performance is good, the dynamic viscosity is low, and the flow loss is small; the phase change pressure and temperature are low, the unit cooling capacity is high, and the size of the storage equipment can be reduced.
Liquid hydrogen is a low boiling point working medium (a colorless, tasteless, high-energy, low-temperature fuel) with a boiling point of-252.78 deg.C (101 kPa). Hydrogen is a colorless, odorless, and extremely flammable gas at normal temperature and pressure.
The precooling engine adopting liquid hydrogen fuel utilizes the cold energy of liquid hydrogen to cool the flowing air, on one hand, the pressure ratio of the core engine is improved, and the performance (thrust) of the engine is improved; on the other hand, the working speed range of the engine is remarkably improved, and the engine can be used as ideal power of large aerospace vehicles such as horizontal take-off and landing, reusable two-stage/single-stage orbit-in carriers, space shuttles and the like.
The traditional supply mode of the working medium with low boiling point adopts a pressurization mode or a storage tank mode.
And (3) supercharging by adopting a booster pump: the disadvantages are as follows: a. the booster pump needs to occupy volume; b. under the regulation of high-temperature incoming flow, the pneumatic turbine pump cannot work due to overhigh incoming flow temperature (more than 1500K); c. the electric pump is adopted, so that the aircraft is required to additionally carry a battery, and the space and the weight are occupied.
The single tank solution has the disadvantages: a. in the traditional single storage tank supply scheme, under the conditions of maneuvering and overload of an aircraft, the liquid level in the storage tank is changed rapidly, so that the gas and liquid in the storage tank are mixed, and meanwhile, the liquid level leaks from the liquid taking port, so that the gas phase or the gas and liquid mixed phase is introduced into the liquid taking pipe; b. the gas phase or the gas-liquid mixed phase enters the liquid taking pipe and further enters the booster pump, so that the blades of the booster pump are damaged and the booster pump cannot work normally.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: aiming at the defects in the prior art, a pressurization supply system and a supply method of low-boiling-point working media (such as liquid carbon dioxide, liquid hydrogen and the like) are provided.
(II) technical scheme
In order to solve the technical problem, the invention provides a low-boiling point working medium pressurization supply system, which comprises a storage system, a pressurization system and a flow regulation system, wherein the storage system is used for storing working medium with a low boiling point; the storage system comprises an overload storage tank 7 and a split-tank storage tank 2 which are communicated, wherein low-boiling-point working media are stored; the supercharging system is connected with the overload storage tank 7 and the split-tank type storage tank 2, the flow regulating system is connected with the overload storage tank 7, low-boiling-point working media flow into the overload storage tank 7 by pressurizing the split-tank type storage tank 2, and the low-boiling-point working media are supplied out from the overload storage tank 7 through the flow regulating system under the action of pressure.
In the storage system, the box-separating storage tank 2 and the overload storage tank 7 are both provided with one, and are communicated with each other through the liquid taking device 3. The lower end of the liquid taking device 3 is arranged at the bottom of the box-separating type storage box 2, and the upper end of the liquid taking device 3 extends into the upper part of the overload storage box 7. One end of the pressurizing system is connected with the top of the first split-box type storage box 2, and the other end is connected with the bottom of the overload storage box 7.
In the storage system, the branch box type storage box 2 is provided with at least two, the overload storage box 7 is provided with one, at the moment, the branch box type storage box 2 is arranged side by side and is sequentially communicated, one end of the pressurization system is connected with the top of the first branch box type storage box 2, the other end of the pressurization system is connected with the bottom of the overload storage box 7, the last branch box type storage box 2 is communicated with the overload storage box 7 through the liquid taking device 3, the lower end of the liquid taking device 3 is arranged at the bottom of the last branch box type storage box 2, and the upper end of the liquid taking device 3 extends into the upper part of the overload storage box 7.
The adjacent box-separating storage tanks 2 are communicated through a liquid taking device, the lower end of the liquid taking device is arranged at the bottom of the previous box-separating storage tank 2, and the upper end of the liquid taking device 3 extends into the upper part of the previous box-separating storage tank 2.
The top of the box-separated storage tank 2 connected with the pressurization system is provided with a safety valve 1 for carrying out pressure relief protection on the box-separated storage tank 2.
The supercharging system comprises a flow regulating valve 5, a vaporizer 4 and a one-way valve 6, one end of the vaporizer 4 is connected with the top of the box-type storage tank 2, the other end of the vaporizer is connected with one end of the flow regulating valve 5, the other end of the flow regulating valve 5 is connected with the output end of the one-way valve 6, and the input end of the one-way valve 6 is connected with the bottom of the overload storage tank 7.
The liquid taking device 3 comprises a liquid taking head 10, a flexible connecting pipe 20, a connecting pipe 30 and a discharge port 40, one end of the flexible connecting pipe 20 is connected with the liquid taking head 10, the other end of the flexible connecting pipe 20 is connected with one end of the connecting pipe 30, the other end of the connecting pipe 30 is connected with the discharge port 40, and the discharge port 40 is an inverted U-shaped elbow.
The regulating system comprises a flow regulator 8.
(III) advantageous effects
The low boiling point working medium pressurization supply system and the supply method provided by the technical scheme adopt a working medium self-pressurization scheme, so that the structure and the weight of the aircraft pressurization system are reduced; adopt the branch case to supply, under aircraft overload, maneuver the condition, the overload storage tank is full case state, guarantees to supply to all to be pure liquid phase supply in the working process.
Drawings
FIG. 1 is a schematic diagram of a split-tank self-pressurizing feed scheme. 1, a safety valve; 2, a split-box storage box; 3 taking a liquid device; 4, a vaporizer; 5 a flow regulator; 5, a one-way valve; 7 an overload storage tank; 8 flow regulator.
Fig. 2 is a schematic structural diagram of a liquid extractor. 10 liquid taking head; 20 flexible connecting pipes; 30 connecting pipes; and 40, discharging the outlet.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in FIG. 1, the low boiling point working medium pressurizing and supplying system of the invention comprises a storage system, a pressurizing system and a flow regulating system; the storage system comprises an overload storage tank 7 and a split-tank storage tank 2 which are communicated, wherein low-boiling-point working media are stored; the supercharging system is connected with the overload storage tank 7 and the split-tank type storage tank 2, the flow regulating system is connected with the overload storage tank 7, low-boiling-point working media flow into the overload storage tank 7 by pressurizing the split-tank type storage tank 2, and the low-boiling-point working media are supplied out from the overload storage tank 7 through the flow regulating system under the action of pressure.
In the storage system, the box-separating storage tank 2 and the overload storage tank 7 are both provided with one, and are communicated with each other through the liquid taking device 3. The lower end of the liquid taking device 3 is arranged at the bottom of the box-separating type storage box 2, and the upper end of the liquid taking device 3 extends into the upper part of the overload storage box 7. One end of the pressurizing system is connected with the top of the first split-box type storage box 2, and the other end is connected with the bottom of the overload storage box 7.
In the storage system, the branch box type storage box 2 is provided with at least two, the overload storage box 7 is provided with one, at the moment, the branch box type storage box 2 is arranged side by side and is sequentially communicated, one end of the pressurization system is connected with the top of the first branch box type storage box 2, the other end of the pressurization system is connected with the bottom of the overload storage box 7, the last branch box type storage box 2 is communicated with the overload storage box 7 through the liquid taking device 3, the lower end of the liquid taking device 3 is arranged at the bottom of the last branch box type storage box 2, and the upper end of the liquid taking device 3 extends into the upper part of the overload storage box 7.
The adjacent box-separating storage tanks 2 are communicated through a liquid taking device, the lower end of the liquid taking device is arranged at the bottom of the previous box-separating storage tank 2, and the upper end of the liquid taking device 3 extends into the upper part of the previous box-separating storage tank 2.
The top of the box-separated storage tank 2 connected with the pressurization system is provided with a safety valve 1 for carrying out pressure relief protection on the box-separated storage tank 2.
The supercharging system comprises a flow regulating valve 5, a vaporizer 4 and a one-way valve 6, one end of the vaporizer 4 is connected with the top of the box-type storage tank 2, the other end of the vaporizer is connected with one end of the flow regulating valve 5, the other end of the flow regulating valve 5 is connected with the output end of the one-way valve 6, and the input end of the one-way valve 6 is connected with the bottom of the overload storage tank 7.
The liquid taking device 3 comprises a liquid taking head 10, a flexible connecting pipe 20, a connecting pipe 30 and a discharge port 40, one end of the flexible connecting pipe 20 is connected with the liquid taking head 10, the other end of the flexible connecting pipe 20 is connected with one end of the connecting pipe 30, the other end of the connecting pipe 30 is connected with the discharge port 40, and the discharge port 40 is an inverted U-shaped elbow.
The regulating system comprises a flow regulator 8.
In the embodiment shown in fig. 1, three separate tank 2 are respectively designated as tank I, tank II and tank III, and the overload tank 7 is designated as tank IV, and the self-pressurization working flow is adjusted by adjusting the flow control valve 5, so that the vaporized gas phase enters the tank I; and under the condition that the boxes I to IV are full, working medium is supplied out through the boxes IV under the action of pressure.
The supply flow rate is controlled and regulated by a flow regulator 8.
Under the conditions of overload and maneuvering, the liquid taking device 3 drives the flexible connecting pipe 20 to move under the action of the gravity of the liquid taking head 10, so that the liquid taking head 10 is always positioned at the lowest position and immersed in liquid; along with the consumption of the liquid, the liquid in the tank I is gradually consumed and is filled with gas; and then the gas continuously fills the tank II through a liquid taking device until the liquid in the tank II, the tank III and the tank IV is effectively supplied to the engine.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A low boiling point working medium pressurization supply system is characterized by comprising a storage system, a pressurization system and a flow regulation system; the storage system comprises an overload storage tank (7) and a split-tank storage tank (2) which are communicated with each other, wherein a low-boiling-point working medium is stored in the overload storage tank; the supercharging system is connected with the overload storage tank (7) and the split-tank storage tank (2), the flow regulating system is connected with the overload storage tank (7), the low-boiling-point working medium flows into the overload storage tank (7) by pressurizing the split-tank storage tank (2), and the low-boiling-point working medium is supplied out from the overload storage tank (7) through the flow regulating system under the action of pressure.
2. The system for the pressurized supply of working fluid with low boiling point according to claim 1, wherein the storage system comprises one split-tank storage tank (2) and one overload storage tank (7) which are communicated with each other through the liquid extractor (3).
3. The low-boiling-point working medium pressurized supply system according to claim 2, wherein the lower end of the liquid extractor (3) is arranged at the bottom of the split-box type storage tank (2), and the upper end of the liquid extractor (3) extends into the upper part of the overload storage tank (7).
4. A pressurized supply system for working medium with low boiling point according to claim 3, characterized in that one end of said pressurized system is connected to the top of the first split tank (2) and the other end is connected to the bottom of the overload tank (7).
5. The system for the pressurized supply of working medium with low boiling point according to claim 1, wherein at least two sub-tanks (2) are provided in the storage system, one overload tank (7) is provided, in which case the sub-tanks (2) are arranged side by side and are in communication with each other in sequence, one end of the pressurization system is connected to the top of the first sub-tank (2), the other end is connected to the bottom of the overload tank (7), the last sub-tank (2) is in communication with the overload tank (7) through the liquid taking device (3), the lower end of the liquid taking device (3) is arranged at the bottom of the last sub-tank (2), and the upper end of the liquid taking device (3) extends into the upper part of the overload tank (7).
6. The system for the pressurized supply of working fluid with low boiling point according to claim 5, wherein the adjacent sub-tank type storage tanks (2) are also communicated with each other through a liquid taking device, the lower end of the liquid taking device is arranged at the bottom of the previous sub-tank type storage tank (2), and the upper end of the liquid taking device (3) extends into the upper part of the previous sub-tank type storage tank (2).
7. The low boiling point working medium pressurizing and supplying system according to claim 4 or 6, wherein a safety valve (1) is arranged at the top of the split tank (2) connected with the pressurizing system and used for performing pressure relief protection on the split tank (2).
8. The low-boiling-point working medium pressurization supply system according to claim 7, characterized in that the pressurization system comprises a flow regulating valve (5), a vaporizer (4) and a check valve (6), one end of the vaporizer (4) is connected with the top of the box-type storage tank (2), the other end of the vaporizer is connected with one end of the flow regulating valve (5), the other end of the flow regulating valve (5) is connected with the output end of the check valve (6), and the input end of the check valve (6) is connected with the bottom of the overload storage tank (7).
9. The low-boiling-point working medium pressurizing and supplying system of claim 8, wherein the liquid taking device (3) comprises a liquid taking head (10), a flexible connecting pipe (20), a connecting pipe (30) and a discharge port (40), one end of the flexible connecting pipe (20) is connected with the liquid taking head (10), the other end of the flexible connecting pipe is connected with one end of the connecting pipe (30), the other end of the connecting pipe (30) is connected with the discharge port (40), and the discharge port (40) is an inverted U-shaped elbow.
10. A low boiling point working medium pressurization supply method is characterized in that the supply method is implemented based on the low boiling point working medium pressurization supply system of claim 8, and the supply method comprises the following processes: under the conditions of overload and maneuvering, the liquid taking device (3) pulls the flexible connecting pipe (20) to move under the action of the gravity of the liquid taking head (10), so that the liquid taking head (10) is always positioned at the lowest position and immersed in liquid; along with the consumption of the liquid, the liquid in the box-separated storage tank (2) is gradually consumed and is filled with gas; then the gas is continuously filled into a subsequent box body through a liquid taking device, so that the working medium with low boiling point is effectively supplied to the engine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111627257.6A CN114275169A (en) | 2021-12-28 | 2021-12-28 | Low-boiling-point working medium pressurization supply system and supply method |
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| CN202111627257.6A CN114275169A (en) | 2021-12-28 | 2021-12-28 | Low-boiling-point working medium pressurization supply system and supply method |
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