阅读说明：本技术 并联贮箱均衡排放的装置 (Device for equalizing discharge of parallel storage tanks ) 是由 马海涛 陈健 唐妹芳 洪鑫 金广明 谭郦郦 汪俊龙 于 2020-06-02 设计创作，主要内容包括：本发明提供了一种并联贮箱均衡排放的装置,包括：容积流量计A(2),容积流量计B(4),刚性互联机构(3)；容积流量计A(2)的主轴与容积流量计B(4)的主轴通过刚性互联机构(3)连接。本发明所涉及的并联贮箱均衡排放装置具有流量控制精度高,压力适应范围广,粘度适应性强,可以在单机状态完成流量的标定,不用进行系统的管路匹配及系统冷流测试,简化系统测试及结构布局,大大提高产品可靠性。(The invention provides a device for balanced discharge of parallel storage tanks, which comprises: the system comprises a volume flow meter A (2), a volume flow meter B (4) and a rigid interconnection mechanism (3); the main shaft of the volume flowmeter A (2) is connected with the main shaft of the volume flowmeter B (4) through a rigid interconnection mechanism (3). The parallel storage tank balanced discharge device has the advantages of high flow control precision, wide pressure application range and strong viscosity adaptability, can finish the flow calibration in a single machine state, does not need to carry out the pipeline matching of a system and the cold flow test of the system, simplifies the system test and the structural layout, and greatly improves the product reliability.)

1. An apparatus for equalizing discharge from parallel tanks, comprising: the system comprises a volume flow meter A (2), a volume flow meter B (4) and a rigid interconnection mechanism (3);

the main shaft of the volume flowmeter A (2) is connected with the main shaft of the volume flowmeter B (4) through a rigid interconnection mechanism (3) to synchronously rotate.

2. The apparatus for equalizing discharge from parallel tanks as claimed in claim 1, further comprising: a storage tank A (1) and a storage tank B (5);

the volumetric flowmeter A (2) and the storage tank A (1) are 1 path, the volumetric flowmeter B (4) and the storage tank B (5) are 2 paths, the propellant flows through the volumetric flowmeter A (2) from the storage tank A (1), and the propellant flows through the volumetric flowmeter B (4) from the storage tank B (5).

3. A parallel tank equalizing discharge device as in claim 1 wherein said volumetric flow meter a (2) and volumetric flow meter B (4) are equal in volumetric flow rate for one revolution.

4. A parallel tank equalizing discharge device as claimed in claim 1, wherein the volumetric flow meter a (2) is connected to the main shaft of the volumetric flow meter B (4) by rigid interconnection means (3) to allow synchronous rotation of the volumetric flow meter a (2) and the volumetric flow meter B (4).

5. The device for equalizing discharge of parallel tanks according to claim 1, wherein the volumetric flow meter a (2) and the volumetric flow meter B (4) are the same elliptical gear flow meter or the same spiral rotor flow meter, and the volumetric flow meter a (2) and the volumetric flow meter B (4) have the same size and structure.

6. A parallel tank equalizing discharge device as in claim 1, wherein tank residual propellant measurements are made by volumetric flow meter a (2) and volumetric flow meter B (4).

7. A parallel tank equalizing discharge device according to claim 1, characterized in that said rigid interconnection means (3) comprise: a coupling is provided.

8. The apparatus for equalizing discharge from parallel storage tanks, according to any one of claims 1 to 7, wherein said apparatus for equalizing discharge from parallel storage tanks is used for equalizing discharge from a bipropellant parallel storage tank in a liquid attitude and orbit control power system.

Technical Field

The invention relates to the technical field of space propulsion systems. And in particular to a device for balanced draining of parallel tanks.

Background

During the working process of the spacecraft, the consumption quality of the propellant in two parallel storage tanks with the same component can have difference, and the difference is called as the amount of discharge imbalance of the parallel storage tanks. Due to unbalanced consumption of symmetrically arranged tank propellant, the mass center of the spacecraft is continuously shifted in the flying process, and the spacecraft can be deviated from the flying orbit. In order to correct the flight deviation of the spacecraft, the attitude control engine needs to work continuously, and excessively consumes the propellant, so that the propellant is consumed in advance; if the serious imbalance exceeds the capability of the attitude control engine for adjusting the attitude, the spacecraft cannot be controlled, and the flight failure is caused. Therefore, the discharge imbalance of the parallel tanks is always an important technical index of the propulsion system.

At present, the known control method for equalizing discharge of the parallel storage tanks comprises (1) a throttling orifice control method; (2) a method for controlling cavitation; (3) an electronic control method; (4) and (4) a synchronous valve control method. The existing spacecraft needs to accurately control the attitude due to the requirement of the flight task, and often needs a plurality of engines with different thrusts to complete the task. In this case, the above-mentioned solutions have certain problems.

The orifice plate control method is to set orifice plate in the outlet of the storage tank to balance the flow resistance difference in the upstream of the storage tank. However, the orifice plate cannot satisfy the requirement of large and small flow rate at the same time. The flow resistance of large flow is larger by adjusting according to small flow; the small flow can not be adjusted according to the large flow.

The cavitation control manufacturing method has the same mechanism as the orifice plate method, has the same problems, and cannot balance flow regulation under large and small flows.

The electronic control method balances the discharge of the parallel tanks through active control, but the premise needs to be that the residual propellant amount of each tank can be accurately measured, and the system is more in components and complex.

The synchronous valve control valve has wide adaptive flow range, but needs to utilize partial flow resistance of the system to achieve the flow regulation function, and the flow regulation precision has a space for improving.

Therefore, it is urgently needed to develop a device for the balanced discharge of the parallel connection storage tanks so as to promote the problem of unbalanced discharge of the parallel connection storage tanks of the system.

Disclosure of Invention

In view of the shortcomings in the prior art, it is an object of the present invention to provide a device for equalizing the discharge of parallel tanks.

According to the invention, the device for equalizing discharge of the parallel tanks comprises: the system comprises a volume flowmeter A, a volume flowmeter B and a rigid interconnection mechanism;

the main shaft of the volume flowmeter A is connected with the main shaft of the volume flowmeter B through a rigid interconnection mechanism to synchronously rotate.

Preferably, the method further comprises the following steps: a storage tank A and a storage tank B;

the volumetric flowmeter A and the storage tank A are used as a path, the volumetric flowmeter B and the storage tank B are used as a path, the propellant flows through the volumetric flowmeter A from the storage tank A, and the propellant flows through the volumetric flowmeter B from the storage tank B.

Preferably, the volumetric flow meter a and the volumetric flow meter B have the same volumetric flow rate in one rotation.

Preferably, the main shafts of the volumetric flowmeter a and the volumetric flowmeter B are connected through a rigid interconnection mechanism, so that the volumetric flowmeter a and the volumetric flowmeter B synchronously rotate.

Preferably, the volumetric flowmeter a and the volumetric flowmeter B are the same elliptical gear flowmeter or the same spiral rotor flowmeter, and the volumetric flowmeter a and the volumetric flowmeter B have the same size and structure.

Preferably, the measurement of the tank residual propellant is performed by means of a volumetric flow meter a and a volumetric flow meter B.

Preferably, the rigid interconnection means comprises: a coupling is provided.

Preferably, the device for the balanced discharge of the parallel storage tanks is applied to the balanced discharge of the parallel storage tanks of the bipropellant propellant of the liquid attitude and orbit control power system.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can adapt to the working conditions of different flow rates, ensures the flow control precision under the full flow rate through the self precision characteristic of the volume flow meter, and can improve the flow control precision of the two volume flow meters as long as the difference of the two volume flow meters is reduced.

2. The invention can adapt to propellants with different viscosities, and ensures low flow resistance under various propellants through the characteristic that the volumetric flowmeter adapts to the viscosity.

3. The invention can adapt to propellants with different pressures, and the flow control precision under various pressures is ensured by the rotation of the rotor of the volume flowmeter.

4. The invention utilizes the working principle of the volumetric flowmeter, can complete the complete machine test through the self test, and does not need to carry out the matching test with the system.

5. The invention utilizes the principle of the volume flowmeter, and uses the volume flowmeter as a testing tool and a fluid control tool, thereby being capable of testing the flow of the propellant in real time.

6. The flow control of the invention adopts passive control, the system does not need to adopt electric active control, the installation position is not required, and the control and the structural layout of the system are greatly simplified.

In summary, the following steps: the parallel storage tank balanced discharge device has the advantages of high flow control precision, wide pressure application range and strong viscosity adaptability, can finish the flow calibration in a single machine state, does not need to carry out the pipeline matching of a system and the cold flow test of the system, simplifies the system test and the structural layout, and greatly improves the product reliability.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural diagram of a balanced discharge device for parallel tanks provided by the invention.

The figures show that:

1-storage tank A, 2-volume flowmeter A, 3-rigid interconnection mechanism, 4-volume flowmeter B, 5-storage tank B.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

According to the invention, the device for equalizing discharge of the parallel tanks comprises: the system comprises a volume flowmeter A, a volume flowmeter B and a rigid interconnection mechanism;

the main shaft of the volume flowmeter A is connected with the main shaft of the volume flowmeter B through a rigid interconnection mechanism to synchronously rotate.

Specifically, the method further comprises the following steps: a storage tank A and a storage tank B;

the volumetric flowmeter A and the storage tank A are used as a path, the volumetric flowmeter B and the storage tank B are used as a path, the propellant flows through the volumetric flowmeter A from the storage tank A, and the propellant flows through the volumetric flowmeter B from the storage tank B.

Specifically, the volume flow of the volume flowmeter a and the volume flow of the volume flowmeter B are equal to each other when the volume flowmeters rotate once.

Specifically, the main shafts of the volumetric flowmeter a and the volumetric flowmeter B are connected through a rigid interconnection mechanism, so that the volumetric flowmeter a and the volumetric flowmeter B synchronously rotate.

Specifically, the volumetric flowmeter a and the volumetric flowmeter B are the same elliptical gear flowmeter or the same spiral rotor flowmeter, and the volumetric flowmeter a and the volumetric flowmeter B have the same size and structure.

Specifically, the measurement of the tank residual propellant is performed by a volumetric flow meter a and a volumetric flow meter B.

Specifically, the rigid interconnection mechanism comprises: a coupling is provided.

Specifically, the device for the balanced discharge of the parallel storage tanks is applied to the balanced discharge of the parallel storage tanks of the bipropellant propellant of the liquid attitude and orbit control power system.

The present invention will be described more specifically below with reference to preferred examples.

Preferred example 1:

fig. 1 is a schematic structural diagram of a parallel tank equalizing discharge device. As shown in the embodiment of fig. 1, the apparatus comprises: the storage tank A is connected with the volumetric flowmeter A, the storage tank B is connected with the volumetric flowmeter B, the storage tank A and the storage tank B are connected with a rigid interconnection mechanism, and the volumetric flowmeter A is connected with an outlet of the volumetric flowmeter B.

Next, the operation of the present invention will be described.

The volumetric flowmeter a2 and the tank a1 form 1-way, the volumetric flowmeter B4 and the tank B5 form 2-way, propellant flows from the tank a1 through the volumetric flowmeter a2, and propellant flows from the tank B4 through the volumetric flowmeter B4. The flow rates of the volume flow meter A2 and the volume flow meter B4 are completely equal in one rotation, and the volume flow meter A2 and the volume flow meter B4 ensure synchronous rotation through a rigid interconnection mechanism, so that the propellant in the storage tank A1 and the propellant in the storage tank B5 are uniformly discharged. Meanwhile, flow signals of the volume flowmeter A2 and the volume flowmeter B4 can be collected, the service condition of the propellant can be fed back in real time, and the residual quantity of the propellant in the storage tank A1 and the storage tank B5 can be calculated.

The parallel tank balanced discharge device is applied to a two-component propellant parallel tank balanced discharge system, and is applied as shown in figure 1. The storage tank A1 and the storage tank B5 are storage tanks connected with the same propellant in parallel, and the propellant is an oxidant or fuel; the parallel storage tanks are in the structural form of metal membranes or surface tension storage tanks; the parallel storage tank of the storage tank A1 and the storage tank B5 is connected with a volume flow meter A2 or a volume flow meter B4 through a pipeline, and the volume flow meter A2 or the volume flow meter B4 are connected and collected to be output to the engine.

Preferred example 2:

the invention aims to provide a parallel storage tank balanced discharge device for a space propulsion system, which can solve the problem of unbalanced discharge of parallel storage tanks. The balanced discharge device can meet the balanced discharge requirement of the parallel storage tanks of the space propulsion system. The invention can adapt to various flow working conditions, has the advantages of small flow resistance, high flow regulation precision, simplified power system and system without matching and debugging, can accurately measure the residual amount of the propellant in the storage tank, and is particularly suitable for a propellant parallel storage tank balanced discharge system.

The technical scheme of the invention is as follows: a parallel storage tank balanced discharge device comprises a volume flow meter A, a volume flow meter B and a rigid interconnection mechanism; the rigid interconnection mechanism is connected with the volume flowmeter A and the volume flowmeter B and ensures that the volume flowmeter A and the volume flowmeter B rotate synchronously; the flow rates of the volume flowmeter A and the volume flowmeter B are completely equal after one rotation.

The volume flowmeter A and the storage tank A are 1 path, the volume flowmeter B and the storage tank B are 2 paths, the propellant flows through the volume flowmeter A from the storage tank A, and the propellant flows through the volume flowmeter B from the storage tank B. The flow of the volumetric flowmeter A and the flow of the volumetric flowmeter B which rotate for one circle are completely equal, and the volumetric flowmeter A and the volumetric flowmeter B synchronously rotate through the rigid interconnection mechanism, so that the propellant in the storage tank A and the propellant in the storage tank B are uniformly discharged. Meanwhile, flow signals of the volume flowmeter A and the volume flowmeter B can be collected, the service condition of the propellant is fed back in real time, and the propellant residual quantity in the storage tank A and the storage tank B is calculated.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.