CN112483278A - Eight-way shunt structure with POGO vibration suppression function - Google Patents
Eight-way shunt structure with POGO vibration suppression function Download PDFInfo
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- CN112483278A CN112483278A CN202011166793.6A CN202011166793A CN112483278A CN 112483278 A CN112483278 A CN 112483278A CN 202011166793 A CN202011166793 A CN 202011166793A CN 112483278 A CN112483278 A CN 112483278A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to an eight-way shunting structure with a POGO vibration suppression function, belonging to the field of design of a carrier rocket propellant; the device comprises a looper flange, a Y-shaped ring, an upper ball body, a switching ring, an inner circular ring, an expansion ring, a lower ball body and 7 outlet flanges; the adapter ring is coaxially and fixedly arranged at the bottom end of the upper ball body; the lower ball body is coaxially and fixedly arranged at the bottom end of the adapter ring; the inner circular ring is coaxially arranged in the inner cavity of the upper sphere; the 1 st outgoing side edge of the Y-shaped ring is fixedly connected with the outer wall of the inner circular ring; the 2 nd outgoing side edge of the Y-shaped ring is fixedly connected with the inner wall of the upper sphere; the loop flange is fixedly arranged on the outer wall of the 3 rd outgoing side of the Y-shaped ring; the loop flange is coaxially limited at the opening at the top of the upper sphere through a Y-shaped ring; the expanding ring is coaxially and fixedly arranged at the axial bottom end of the inner circular ring; 7 outlet flanges are arranged on the outer wall of the lower sphere; the invention meets the requirements of the accumulator on larger volume and energy value and realizes that the propellant is uniformly delivered to a plurality of engines.
Description
Technical Field
The invention belongs to the field of design of carrier rocket propellants, and relates to an eight-way shunt structure with a POGO vibration suppression function.
Background
POGO vibration refers to longitudinal unstable low-frequency vibration generated by mutual coupling of dynamic characteristics of a liquid rocket structural system and a propulsion system, and can cause the shutdown of a rocket engine, the failure of an effective load, the physical discomfort of astronauts, even the damage of rocket body structures and other consequences in serious cases. The POGO of domestic and foreign rockets is inhibited by installing a pressure accumulator on a propellant conveying pipeline at the inlet of an engine pump and separating the natural frequency of a conveying system from the natural frequency of a rocket body structure by changing the natural frequency of the conveying system, so that the purpose of POGO inhibition is achieved, and the pressure accumulator is generally adopted. When the rocket scale becomes bigger, the volume and energy value requirements for the pressure accumulator are larger, the metal film box gas storage type pressure accumulator obviously increases the number of welding lines and the length due to the increase of the number of films, the control difficulty of the welding line defects is obviously increased, and meanwhile, the film box is easy to destabilize after being pressurized due to the increase of the slenderness ratio, and the reliability is poorer under the vibration working condition.
Disclosure of Invention
The technical problem solved by the invention is as follows: the eight-way shunt structure with the POGO vibration suppression function is provided to overcome the defects of the prior art, the existing metal bellows pressure accumulator with small volume and poor manufacturability and reliability is replaced, the requirements on larger volume and energy value of the pressure accumulator are met, and the propellant is uniformly conveyed to a plurality of engines.
The technical scheme of the invention is as follows:
an eight-way shunting structure with POGO vibration suppression function comprises a loop flange, a Y-shaped ring, an upper ball body, a switching ring, an inner circular ring, an expansion ring, a lower ball body and 7 outlet flanges; wherein, the upper sphere is a hemispherical hollow shell structure; the upper ball body is axially and vertically arranged, and the large-diameter opening end is vertically downward; the adapter ring is coaxially and fixedly arranged at the bottom end of the upper ball body; the lower sphere is of a hemispherical hollow shell structure; the lower ball body is axially and vertically arranged, and the large-diameter opening end is vertically upward; the lower ball body is coaxially and fixedly arranged at the bottom end of the adapter ring; the inner ring is a hollow cylindrical structure which is vertically arranged in the axial direction; the inner circular ring is coaxially arranged in the inner cavity of the upper sphere; the Y-shaped ring is provided with 3 outgoing side edges; the 1 st outgoing side edge of the Y-shaped ring is fixedly connected with the outer wall of the inner circular ring; the 2 nd outgoing side edge of the Y-shaped ring is fixedly connected with the inner wall of the upper sphere; the loop flange is fixedly arranged on the outer wall of the 3 rd outgoing side of the Y-shaped ring; the top of the upper sphere is provided with an opening; the loop flange is coaxially limited at the opening at the top of the upper sphere through a Y-shaped ring; the expanding ring is coaxially and fixedly arranged at the axial bottom end of the inner circular ring; 7 outlet flanges are arranged on the outer wall of the lower sphere.
In the above eight-way shunt structure with a POGO vibration suppression function, the cross section of the expanding ring is in an L-shaped structure; the vertical edge of the L-shaped expanding ring is butted with the bottom end of the inner circular ring; the horizontal edge of the L-shaped expanding ring points to the inner wall of the inner circular ring; and a gap is reserved between the horizontal edge of the expanding ring and the inner wall of the inner circular ring.
In the eight-way shunting structure with the POGO vibration suppression function, 1 outlet flange of the 7 outlet flanges is arranged at the bottom of the lower sphere and is connected with the central point of the outlet flange and the central point L1 of the axis of the adapter ring, so that the included angle a between the L1 and the axis of the lower sphere is 15 degrees; the other 6 outlet flanges are positioned on a uniform horizontal plane, and the 6 outlet flanges are uniformly arranged on the side wall of the lower sphere along the circumferential direction; and the central point of any 1 of the 6 outlet flanges is connected with the central point L2 of the axis of the adapter ring, so that the included angle b between the L2 and the axis of the lower sphere is 60 degrees.
At the above-mentioned eight-way reposition of redundant personnel structure that possesses POGO vibration suppression function, the working process of eight-way reposition of redundant personnel structure is:
external propellant enters from the loop flange, passes through the inner circular ring, the expanding ring and the lower ball body in sequence, and is output to an external engine from 7 outlet flanges; and gas is filled in a cavity formed among the inner circular ring, the outer wall of the expanding ring and the inner wall of the upper sphere, so that the vibration suppression of the POGO with the eight-way shunting structure is realized.
In the eight-way shunt structure with the POGO vibration suppression function, the upper sphere is provided with a first differential pressure sensor interface, an exhaust hole, a pressure measuring hole, an inflation hole and a gas temperature measuring hole; the first differential pressure sensor interface, the exhaust hole, the pressure measuring hole, the gas charging hole and the gas temperature measuring hole are positioned on the same horizontal plane; the distance L3 between the plane and the plane where the axial midpoint of the adapter ring is located is 880-890 mm;
the first differential pressure sensor interface, the exhaust hole, the pressure measuring hole, the inflation hole and the gas temperature measuring hole are uniformly arranged on the outer wall of the upper sphere along the circumferential direction.
In the eight-way shunt structure with the POGO vibration suppression function, the inner cavity of the upper sphere is inflated through the inflation holes; the gas in the inner cavity of the upper sphere is exhausted through the exhaust hole; the gas pressure in the inner cavity of the upper sphere is measured through the pressure measuring hole; the gas temperature of the inner cavity of the upper sphere is measured through the gas temperature measuring hole; the first differential pressure sensor interface is in communication with an external differential pressure sensor.
At foretell eight-way reposition of redundant personnel structure that possesses POGO vibration suppression function, go up the gas that the spheroid inner chamber was filled and be helium.
In the eight-way shunt structure with the POGO vibration suppression function, the adapter ring is provided with a liquid temperature measuring hole and a second differential pressure sensor interface; the liquid temperature measuring hole and the second differential pressure sensor interface are symmetrically arranged on the side wall of the adapter ring, and the horizontal planes of the liquid temperature measuring hole and the second differential pressure sensor interface are located at the axial middle position of the adapter ring.
In the eight-way shunt structure with the POGO vibration suppression function, after the eight-way shunt structure is filled with the external propellant, the liquid level of the external propellant is positioned above the liquid temperature measuring hole; the temperature of the external propellant is measured through the liquid temperature measuring hole; the second differential pressure sensor interface is in communication with an external differential pressure sensor.
In the eight-way shunt structure with the POGO vibration suppression function, the external differential pressure sensor realizes measurement of gas pressure through the first differential pressure sensor interface; the propellant pressure is measured through a second differential pressure sensor interface; and calculating the pressure difference to obtain the liquid level height of the propellant in the eight-way shunting structure.
Compared with the prior art, the invention has the beneficial effects that:
(1) the POGO restraining system can be applied to a POGO restraining system of a large low-temperature liquid carrier rocket, can provide gas volume required by POGO restraining, has a large energy value, and can replace the existing metal bellows type pressure accumulator;
(2) the invention realizes that the propellant is uniformly delivered to each engine through the design of the multi-way outflow ports. The volume of the air cavity of the pressure accumulator can be kept unchanged basically (the fluctuation range is controlled within 5%) by the design of the discharge pipe, and the volume of the air cavity can be adjusted rapidly by the height design of the discharge pipe so as to meet the requirements of different energy values;
(3) the gas in the air cavity can be discharged out of the system through the electromagnetic valve and the orifice plate, and can not enter the conveying pipe, so that the normal work of the engine is not influenced;
(4) the invention eliminates the single-point failure link through the redundancy design of the key action single machine during the system design, and ensures that the system can still work normally when a fault occurs once. The product is simple to use and maintain, and the operation in the preparation stage before injection is reduced; after low-temperature filling, unattended operation is realized through automatic control or remote control.
Drawings
FIG. 1 is a front view of an eight-way split flow configuration of the present invention;
FIG. 2 is a top view of an eight-way flow splitting arrangement of the present invention;
fig. 3 is a top view of an adapter ring of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
The invention provides a multi-pass flow dividing structure with a POGO vibration suppression function, which is applied to a pipeline of a conveying system, replaces the existing metal bellows pressure accumulator with small volume and poor manufacturability and reliability, meets the requirements of the pressure accumulator on larger volume and energy value, and realizes uniform conveying of a propellant to a plurality of engines. The invention integrates the POGO vibration suppression function of the pressure accumulator and the multi-pass flow dividing function, and is suitable for compact space on arrows and weight reduction of a simplified system.
An eight-way shunt structure with a POGO vibration suppression function, as shown in fig. 1, comprises a loop flange 1, a Y-shaped ring 3, an upper sphere 4, an adapter ring 5, an inner ring 6, an expansion ring 7, a lower sphere 8 and 7 outlet flanges 9; wherein, the upper sphere 4 is a hemispherical hollow shell structure; the upper ball body 4 is axially and vertically arranged, and the opening end with the large diameter is vertically downward; the adapter ring 5 is coaxially and fixedly arranged at the bottom end of the upper sphere 4; the lower sphere 8 is a hemispherical hollow shell structure; the lower ball body 8 is axially and vertically arranged, and the opening end of the large diameter is vertically upward; the lower ball body 8 is coaxially and fixedly arranged at the bottom end of the adapter ring 5; the inner ring 6 is a hollow cylindrical structure which is vertically arranged in the axial direction; the inner circular ring 6 is coaxially arranged in the inner cavity of the upper sphere 4; the Y-ring 3 is provided with 3 outgoing sides; the 1 st outgoing side edge of the Y-shaped ring 3 is fixedly connected with the outer wall of the inner circular ring 6; the 2 nd outgoing side edge of the Y-shaped ring 3 is fixedly connected with the inner wall of the upper sphere 4; the loop flange 1 is fixedly arranged on the outer wall of the 3 rd outgoing side of the Y-shaped ring 3; the top of the upper sphere 4 is provided with an opening; the looping flange 1 is coaxially limited at the opening at the top of the upper sphere 4 through a Y-shaped ring 3; the expanding ring 7 is coaxially and fixedly arranged at the axial bottom end of the inner circular ring 6; and 7 outlet flanges 9 are arranged on the outer wall of the lower ball body 8.
The section of the expanding ring 7 is of an L-shaped structure; the vertical edge of the L-shaped expanding ring 7 is butted with the bottom end of the inner ring 6; the horizontal side of the L-shaped flared ring 7 points towards the inner wall of the inner ring 6; and a gap is reserved between the horizontal edge of the expanding ring 7 and the inner wall of the inner ring 6.
1 outlet flange 9 of the 7 outlet flanges 9 is arranged at the bottom of the lower ball body 8 and is connected with the central point of the outlet flange 9 and the central point L1 of the axis of the adapter ring 5, so that the included angle a between L1 and the axis of the lower ball body 8 is 15 degrees; the other 6 outlet flanges 9 are positioned on a uniform horizontal plane, and the 6 outlet flanges 9 are uniformly arranged on the side wall of the lower sphere 8 along the circumferential direction; and the central point of any 1 outlet flange 9 in the 6 outlet flanges 9 is connected with the axial central point L2 of the adapter ring 5, so that the included angle b between the L2 and the axial of the lower ball 8 is 60 degrees.
The working process of the eight-way shunting structure is as follows:
external propellant enters from the looper flange 1, sequentially passes through the inner circular ring 6, the expanding ring 7 and the lower ball 8, and is output to an external engine from 7 outlet flanges 9; gas is filled in a cavity formed between the outer walls of the inner circular ring 6 and the expanding ring 7 and the inner wall of the upper sphere 4, and the vibration suppression of the POGO with the eight-way shunting structure is realized.
As shown in fig. 2, the upper sphere 4 is provided with a first differential pressure sensor interface 10, an exhaust hole 11, a pressure measuring hole 12, an inflation hole 13 and a gas temperature measuring hole 14; the first differential pressure sensor interface 10, the exhaust hole 11, the pressure measuring hole 12, the gas charging hole 13 and the gas temperature measuring hole 14 are positioned on the same horizontal plane; the distance L3 between the plane and the plane of the axial midpoint of the adapter ring 5 is 880-890 mm;
the first differential pressure sensor interface 10, the exhaust hole 11, the pressure measuring hole 12, the inflation hole 13 and the gas temperature measuring hole 14 are uniformly arranged on the outer wall of the upper sphere 4 along the circumferential direction. The inner cavity of the upper sphere 4 is inflated through the inflation hole 13; the air in the inner cavity of the upper sphere 4 is exhausted through the exhaust hole 11; the measurement of the gas pressure in the inner cavity of the upper sphere 4 is realized through the pressure measuring hole 12; the gas temperature in the inner cavity of the upper sphere 4 is measured through the gas temperature measuring hole 14; the first differential pressure sensor interface 10 communicates with an external differential pressure sensor. The gas filled in the inner cavity of the upper sphere 4 is helium.
As shown in fig. 3, the adapter ring 5 is provided with a liquid temperature measurement hole 15 and a second differential pressure sensor interface 16; the liquid temperature measuring hole 15 and the second differential pressure sensor interface 16 are symmetrically arranged on the side wall of the adapter ring 5, and the horizontal plane where the liquid temperature measuring hole 15 and the second differential pressure sensor interface 16 are located is located at the axial middle position of the adapter ring 5. After the eight-way shunt structure is filled with the external propellant, the liquid level of the external propellant is positioned above the liquid temperature measuring hole 15; the temperature of the external propellant is measured through the liquid temperature measuring hole 15; the second differential pressure sensor interface 16 communicates with an external differential pressure sensor. The external differential pressure sensor realizes measurement of gas pressure through the first differential pressure sensor interface 10; the measurement of the propellant pressure is realized through the second differential pressure sensor interface 16; and calculating the pressure difference to obtain the liquid level height of the propellant in the eight-way shunting structure.
The upper ball body 4, the adapter ring 5 and the lower ball body 8 are molded by integral pressurizing without welding seams. After the ball body is formed, the convex hole of the ball body is shaped, and the sizes of roundness, thickness and the like of the convex hole and the welding position are ensured. After the sphere shape modification is finished, welding the loop flange 1 and the upper sphere 4 through a Y-shaped ring 3 to form an upper assembly; an outlet flange 9 and a lower sphere 8 are welded to form a lower assembly and a middle transfer ring, the lower assembly and the middle transfer ring comprise a liquid temperature measuring hole 15 and a second differential pressure sensor interface 16, the whole eight-way sphere is realized through two circumferential welding lines, an inner ring 6 and an expansion ring 7 in the eight-way sphere are welded, and finally a multi-way flow distribution structure with a POGO vibration suppression function is realized.
The structure of leading to more passes through inertial hole and the pipeline UNICOM on the expanding ring 7, and the work process is through keeping the air pillow pressure to the inside gas medium that lets in of structure that leads to more, controls the air pillow volume through exhaust hole 11 and inflation hole 13, and this air pillow can realize POGO vibration and restrain required energy value to exhaust hole 11 and external UNICOM avoid the combustion gas to get into the engine and cause the cavitation. The external propellant enters the multi-pass flow dividing structure through the loop flange 1, and is uniformly conveyed to each engine through seven outlet flanges 9 which are uniformly arranged on the lower sphere and have uniform sizes, so that the multi-pass flow dividing function is realized.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (10)
1. The utility model provides an eight-way shunt structure that possesses POGO vibration suppression function which characterized in that: comprises a loop flange (1), a Y-shaped ring (3), an upper ball body (4), a transfer ring (5), an inner circular ring (6), an expansion ring (7), a lower ball body (8) and 7 outlet flanges (9); wherein, the upper sphere (4) is a hemispherical hollow shell structure; the upper ball body (4) is axially and vertically arranged, and the opening end with the large diameter is vertically downward; the adapter ring (5) is coaxially and fixedly arranged at the bottom end of the upper sphere (4); the lower sphere (8) is of a hemispherical hollow shell structure; the lower ball body (8) is axially and vertically arranged, and the opening end of the large diameter is vertically upward; the lower ball body (8) is coaxially and fixedly arranged at the bottom end of the adapter ring (5); the inner ring (6) is a hollow cylindrical structure which is vertically arranged in the axial direction; the inner circular ring (6) is coaxially arranged in the inner cavity of the upper sphere (4); the Y-shaped ring (3) is provided with 3 outgoing side edges; the 1 st outgoing side edge of the Y-shaped ring (3) is fixedly connected with the outer wall of the inner ring (6); the 2 nd outgoing side edge of the Y-shaped ring (3) is fixedly connected with the inner wall of the upper sphere (4); the loop flange (1) is fixedly arranged on the outer wall of the 3 rd outgoing side of the Y-shaped ring (3); the top of the upper sphere (4) is provided with an opening; the loop flange (1) is coaxially limited at the opening at the top of the upper sphere (4) through a Y-shaped ring (3); the expanding ring (7) is coaxially and fixedly arranged at the axial bottom end of the inner circular ring (6); 7 outlet flanges (9) are arranged on the outer wall of the lower sphere (8).
2. The octant shunt structure with POGO vibration suppression function as claimed in claim 1, wherein: the cross section of the expanding ring (7) is of an L-shaped structure; the vertical edge of the L-shaped expanding ring (7) is butted with the bottom end of the inner circular ring (6); the horizontal edge of the L-shaped expanding ring (7) points to the inner wall of the inner circular ring (6); and a gap is reserved between the horizontal edge of the expanding ring (7) and the inner wall of the inner ring (6).
3. The octant shunt structure with POGO vibration suppression function as claimed in claim 2, wherein: 1 outlet flange (9) of the 7 outlet flanges (9) is arranged at the bottom of the lower sphere (8) and is connected with the central point of the outlet flange (9) and the axial central point L1 of the adapter ring (5), so that the axial included angle a between L1 and the lower sphere (8) is 15 degrees; the other 6 outlet flanges (9) are positioned on a uniform horizontal plane, and the 6 outlet flanges (9) are uniformly arranged on the side wall of the lower sphere (8) along the circumferential direction; and the central point of any 1 outlet flange (9) in the 6 outlet flanges (9) is connected with the axial central point L2 of the adapter ring (5), and the included angle b between the L2 and the axial of the lower sphere (8) is 60 degrees.
4. The octant shunt structure with POGO vibration suppression function as claimed in any one of claims 1-3, wherein: the working process of the eight-way shunting structure is as follows:
external propellant enters from the loop flange (1), sequentially passes through the inner circular ring (6), the expanding ring (7) and the lower ball body (8), and is output to an external engine from 7 outlet flanges (9); gas is filled in a cavity formed among the outer walls of the inner circular ring (6) and the expanding ring (7) and the inner wall of the upper sphere (4), and the vibration suppression of the POGO with the eight-way shunting structure is realized.
5. The octant shunt structure with POGO vibration suppression function as claimed in claim 4, wherein: the upper sphere (4) is provided with a first differential pressure sensor interface (10), an exhaust hole (11), a pressure measuring hole (12), an inflation hole (13) and a gas temperature measuring hole (14); the first differential pressure sensor interface (10), the exhaust hole (11), the pressure measuring hole (12), the inflation hole (13) and the gas temperature measuring hole (14) are positioned on the same horizontal plane; the distance L3 between the plane and the plane of the axial midpoint of the adapter ring (5) is 880-890 mm;
the first differential pressure sensor interface (10), the exhaust hole (11), the pressure measuring hole (12), the inflation hole (13) and the gas temperature measuring hole (14) are uniformly arranged on the outer wall of the upper sphere (4) along the circumferential direction.
6. The octant shunt structure with POGO vibration suppression function as claimed in claim 5, wherein: the inner cavity of the upper sphere (4) is inflated through the inflation hole (13); the gas in the inner cavity of the upper sphere (4) is exhausted through the exhaust hole (11); the measurement of the gas pressure in the inner cavity of the upper sphere (4) is realized through the pressure measuring hole (12); the gas temperature in the inner cavity of the upper sphere (4) is measured through the gas temperature measuring hole (14); the first differential pressure sensor interface (10) communicates with an external differential pressure sensor.
7. The octant shunt structure with POGO vibration suppression function as claimed in claim 6, wherein: the gas filled in the inner cavity of the upper sphere (4) is helium.
8. The octant shunt structure with POGO vibration suppression function as claimed in claim 7, wherein: a liquid temperature measuring hole (15) and a second differential pressure sensor interface (16) are arranged on the adapter ring (5); the liquid temperature measuring hole (15) and the second differential pressure sensor interface (16) are symmetrically arranged on the side wall of the adapter ring (5), and the horizontal plane where the liquid temperature measuring hole (15) and the second differential pressure sensor interface (16) are located is located at the axial middle position of the adapter ring (5).
9. The octant shunt structure with POGO vibration suppression function as claimed in claim 8, wherein: after the eight-way shunt structure is filled with the external propellant, the liquid level of the external propellant is positioned above the liquid temperature measuring hole (15); the temperature of the external propellant is measured through a liquid temperature measuring hole (15); the second differential pressure sensor interface (16) is in communication with an external differential pressure sensor.
10. The octant shunt structure with POGO vibration suppression function as claimed in claim 9, wherein: the external differential pressure sensor realizes measurement of gas pressure through a first differential pressure sensor interface (10); the measurement of the propellant pressure is realized through a second differential pressure sensor interface (16); and calculating the pressure difference to obtain the liquid level height of the propellant in the eight-way shunting structure.
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| CN117869117A (en) * | 2023-12-26 | 2024-04-12 | 北京天兵科技有限公司 | Pressure accumulator and propellant conveying system of carrier rocket |
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|---|---|---|---|---|
| CN114704507A (en) * | 2022-03-14 | 2022-07-05 | 蓝箭航天空间科技股份有限公司 | Carrier rocket semi-regulated pressure accumulator and POGO vibration suppression method |
| CN114704507B (en) * | 2022-03-14 | 2023-03-28 | 蓝箭航天空间科技股份有限公司 | Carrier rocket semi-regulated pressure accumulator and POGO vibration suppression method |
| CN117536733A (en) * | 2023-10-19 | 2024-02-09 | 北京天兵科技有限公司 | Large liquid carrier rocket POGO suppression system and conveying system |
| CN117536733B (en) * | 2023-10-19 | 2024-08-13 | 北京天兵科技有限公司 | Large liquid carrier rocket POGO suppression system and conveying system |
| CN117869117A (en) * | 2023-12-26 | 2024-04-12 | 北京天兵科技有限公司 | Pressure accumulator and propellant conveying system of carrier rocket |
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| Publication number | Publication date |
|---|---|
| CN112483278B (en) | 2022-03-04 |
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