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Structure and method for axial force balance of a large flow and high power preload pump

A technology of balanced structure and pre-pressurized pump, which is applied to parts, pumps, and pump elements of pumping devices used for elastic fluids, and can solve problems such as rotor structure damage, affecting normal operation of the engine, and bearing damage, and achieves an adjustment method effective effect

Active Publication Date: 2021-06-15
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the pre-pressure pump spins, the rotor structure will generate a certain axial force under the action of the pressure field. If the axial force is too large, the rotor structure will be damaged and the bearing will be damaged, which will affect the normal operation of the engine.

Method used

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  • Structure and method for axial force balance of a large flow and high power preload pump
  • Structure and method for axial force balance of a large flow and high power preload pump
  • Structure and method for axial force balance of a large flow and high power preload pump

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Embodiment Construction

[0030] The invention will be further described in detail below with reference to the drawings and examples. Through these description, the features and advantages of the present invention will become more clearly clarified.

[0031] According to the first aspect of the invention, such as figure 1 As shown, the present invention provides a large flow high power preloaded pump axial force balancing structure, which is located in a preloaded pump housing, including a housing rib 1, a radial bearing 2, and a thrust bearing 5. And pre-press pump rotor 6; where

[0032] After the preload pump is a axial flow pump, after the preload pump rotor 6 is rotated, the preloaded pump rotor has a lower propellant pressure increases to a high pressure of the preloaded pump rotor, and the preload pump rotor 6 is located two from it. The radial bearing 2 and the thrust bearing 5 are supported by two o'clock, wherein the thrust bearing 5 is subjected to the remaining axial force of the preloaded pump...

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Abstract

The invention provides an axial force balance structure and method of a large-flow and high-power preload pump. The bearing (5), and the pre-pressure pump rotor (6), may also include a balance drum (3) and a double labyrinth seal (4). The balance structure and method in the present invention are proposed in order to solve the problem of excessive residual axial force of the rotor of the large-flow and high-power pre-compression pump, and are suitable for high-thrust pump-pressed liquid rocket engines. The layout can actively control the internal flow circulation of the preload pump. While ensuring the cooling flow of the bearing, it can effectively control the pressure distribution of the rotor of the large flow and high power preload pump under different working conditions, thereby adjusting the residual axial force of the preload pump and improving Engine reliability.

Description

Technical field [0001] The invention belongs to the field of fluid mechanism, involving an axial force balancing structure and method, and more particularly to a large flow high power preloaded pump axial force balance structure and method. Background technique [0002] The liquid rocket engine pump booster system generally adopts the pre-pressing pump structure, and the pre-pressing pump is placed before the main pump is placed in advance, and the main pump inlet propellant pressure is improved, and the main pump does not cause cavitation under lower reservoir pressure, lowered. Engine pressure demand for reservoirs. After the pre-pressing pump is spin, the rotor structure produces a certain axial force under the action of the pressure field, and the axial force will cause the rotor structural damage and the bearing damage, which affects the normal operation of the engine. For large flow high-power preload pumps, due to the large outer diameter of the rotor, the rotor axial forc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F04D29/18F04D29/08F04D29/046F02K9/46
CPCF02K9/46F04D29/046F04D29/086F04D29/181F04D29/669
Inventor 王晓锋袁伟为李惠敏李昌奂李爱民于晴蒋建园
Owner XIAN AEROSPACE PROPULSION INST