A liquid rocket engine bleed air augmentation device

Abstract

The application discloses a kind of for liquid rocket engine blowing air supply device, including ground gas source assembly, engine, air supply mechanism, blowing mechanism, the ground gas source assembly is connected with air supply mechanism and blowing mechanism respectively, the gas source inlet of the engine is connected with the gas source outlet of air supply mechanism and blowing mechanism respectively, the gas outlet of the engine is connected with the gas source inlet of air supply mechanism.The air supply bottle of the present application is used to supply air for the control gas bottle carried by the engine itself, to ensure the stability of the engine control gas source, to provide protection for the normal operation of the engine, and to improve the reliability of the engine control and blowing system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine purging and air supply, in particular to a liquid rocket engine purging and air supply device. BACKGROUND

[0002] The liquid rocket engine purging and air supply system can provide purging and control gas source for normal operation of the engine. The traditional liquid rocket engine purging and control gas cylinder is carried by itself, which leads to a large engine volume and is not convenient for engine layout. Otherwise, the engine purging and control gas amount is limited, which leads to incomplete purging in the multiple starting process of the engine and causes adverse effects on multiple ignition of the engine. SUMMARY

[0003] Therefore, the main purpose of the present application is to provide a liquid rocket engine purging and air supply device.

[0004] To achieve the above purpose, the technical scheme of the present application is as follows:

[0005] The present application provides a liquid rocket engine purging and air supply device, which comprises a ground gas source assembly, an engine, an air supply mechanism and a purging mechanism. The ground gas source assembly is connected with the air supply mechanism and the purging mechanism respectively. The gas source inlet of the engine is connected with the gas source outlet of the air supply mechanism and the purging mechanism respectively. The gas outlet of the engine is connected with the gas source inlet of the air supply mechanism.

[0006] Preferably, the ground gas source assembly comprises a ground gas source, a ground gas source purging control port and a ground purging gas port. The ground gas source and the ground gas source purging control port are connected with the air supply mechanism and the purging mechanism. The ground purging gas port is connected with the purging mechanism.

[0007] Preferably, the air supply mechanism comprises an air supply assembly and an exhaust assembly. The air supply assembly is connected with the ground gas source. The air supply assembly is connected with the engine control gas source inlet. The exhaust assembly is connected with the engine control gas source purging port. The exhaust assembly is connected with the ground gas source purging control port.

[0008] The air supplement assembly preferably comprises an air supplement cylinder, a first filter, a first air charging valve, a first high-pressure electromagnetic valve, a one-way valve, a throttle ring, a second filter, one end of the first filter and the second filter is connected with the ground gas source, the other end of the first filter is connected with the first air inlet end of the first air charging valve, the air outlet end of the first air charging valve is connected with the air supplement cylinder and one end of the first high-pressure electromagnetic valve respectively, the second air inlet end of the first air charging valve is connected with the exhaust assembly, the other end of the second filter is connected with the other end of the first high-pressure electromagnetic valve and one end of the throttle ring in series after the one-way valve, the other end of the throttle ring is connected with the engine control gas source inlet.

[0009] The exhaust assembly preferably comprises an exhaust pipe, one end of the exhaust pipe is connected with the engine control gas source exhaust outlet, the other end of the exhaust pipe is connected with the second air inlet end of the first air charging valve and the ground gas source exhaust control outlet respectively.

[0010] The blowing mechanism preferably comprises a blowing gas source assembly and a blowing assembly, one end of the blowing assembly is connected with the ground blowing gas outlet, the other end of the blowing assembly is connected with the engine blowing gas source inlet and the blowing gas source assembly respectively, the air inlet end of the blowing gas source assembly is connected with the ground gas source and the ground gas source exhaust control outlet.

[0011] The blowing assembly preferably comprises a fourth filter and a second one-way valve, one end of the fourth filter is connected with the ground gas source exhaust control outlet, the other end of the fourth filter is connected with one end of the second one-way valve, the other end of the second one-way valve is connected with the blowing gas source assembly and the engine blowing gas source inlet respectively.

[0012] The blowing gas source assembly preferably comprises a blowing cylinder group, a third filter, a second air charging valve, a second high-pressure electromagnetic valve, a pressure reducing valve, a safety valve, one end of the third filter is connected with the ground gas source, the other end of the third filter is connected with the first air inlet end of the second air charging valve, the second air inlet end of the second air charging valve is connected with the ground gas source exhaust control outlet, the air outlet end of the second air charging valve is connected with the air inlet end of the blowing cylinder group, the air outlet end of the blowing cylinder group is connected with the engine blowing gas source inlet in sequence after the second high-pressure electromagnetic valve and the pressure reducing valve, the safety valve is arranged on the gas path of the pressure reducing valve for protecting the gas path after the pressure reducing valve is damaged.

[0013] The blowing cylinder group preferably comprises at least one cylinder.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The application replenishes the control gas cylinder carried by the engine by the gas cylinder, ensures the stability of the engine control gas source, provides protection for the normal work of the engine, and improves the reliability of the engine control and blowing system. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0017] Figure 1 A structure schematic view of a gas replenishing mechanism in a liquid rocket engine blowing and gas replenishing device according to an embodiment of the application.

[0018] Figure 2 A structure schematic view of a blowing mechanism in a liquid rocket engine blowing and gas replenishing device according to an embodiment of the application. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the application clearer, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application.

[0020] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are used only for illustrative purposes, and cannot be understood as limiting the patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0021] It should be noted that in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitations, the element defined by the sentence "comprises a" does not exclude the presence of another identical element in the process, article or device comprising the element.

[0022] The embodiment of the present application provides a kind of for liquid rocket engine blowing air supply device, such as Figure 1 And Figure 2 As shown in the figure, including ground gas source assembly, engine, air supply mechanism, blowing mechanism, the ground gas source assembly is connected with air supply mechanism and blowing mechanism respectively, the gas source entrance of the engine is connected with the gas source outlet of air supply mechanism and blowing mechanism respectively, the gas outlet of the engine is connected with the gas source entrance of air supply mechanism.

[0023] As shown in the figure Figure 1 And Figure 2 The ground gas source assembly includes ground gas source, ground gas source bleed control port, ground blowing gas port, the ground gas source and ground gas source bleed control port are connected with air supply mechanism and blowing mechanism, and the ground blowing gas port is connected with blowing mechanism.

[0024] As shown in the figure Figure 1 And Figure 2 The air supply mechanism includes air supply assembly, exhaust assembly, the air inlet of the air supply assembly is connected with ground gas source, the air outlet of the air supply assembly is connected with engine control gas source inlet, the air inlet of the exhaust assembly is connected with engine control gas source bleed port, and the air outlet of the exhaust assembly is connected with ground gas source bleed control port.

[0025] As shown in the figure Figure 1 And Figure 2 The air supply assembly includes air supply cylinder 11, first filter 12, first charging valve 13, first high-pressure electromagnetic valve 14, one-way valve 15, throttle ring 16, second filter 17, one end of the first filter 12 and the second filter is connected with ground gas source, the other end of the first filter 12 is connected with the first air inlet end of the first charging valve 13, the air outlet end of the first charging valve 13 is connected with the air supply cylinder 11 and one end of the first high-pressure electromagnetic valve 14 respectively, the second air inlet end of the first charging valve 13 is connected with exhaust assembly, the other end of the second filter 17 is connected with the other end of the first high-pressure electromagnetic valve 14 and one end of the throttle ring 16 after one-way valve 15 in series, the other end of the throttle ring 16 is connected with engine control gas source inlet.

[0026] As shown in the figure Figure 1 And Figure 2 The exhaust assembly includes exhaust pipe 18, one end of the exhaust pipe 18 is connected with engine control gas source bleed port, and the other end of the exhaust pipe 18 is connected with the second air inlet end of the first charging valve 13 and ground gas source bleed control port respectively.

[0027] As shown in the figure Figure 1 And Figure 2As shown in the figures, the blowing mechanism comprises a blowing gas source assembly and a blowing assembly, one end of the blowing assembly is connected with the ground blowing gas port, the other end of the blowing assembly is connected with the engine blowing gas source inlet and the blowing gas source assembly respectively, the air inlet end of the blowing gas source assembly is connected with the ground gas source and the ground gas source discharge control port.

[0028] As shown in the figures, Figure 1 and Figure 2 the blowing assembly comprises a fourth filter 28 and a second one-way valve 27, one end of the fourth filter 28 is connected with the ground gas source discharge control port, the other end of the fourth filter 28 is connected with one end of the second one-way valve 27, the other end of the second one-way valve 27 is connected with the blowing gas source assembly and the engine blowing gas source inlet respectively.

[0029] As shown in the figures, Figure 1 and Figure 2 the blowing gas source assembly comprises a blowing gas cylinder group 21, a third filter 22, a second charging valve 23, a second high-pressure electromagnetic valve 24, a pressure reducing valve 25, and a safety valve 26, one end of the third filter 22 is connected with the ground gas source, the other end of the third filter 22 is connected with the first air inlet end of the second charging valve 23, the second air inlet end of the second charging valve 23 is connected with the ground gas source discharge control port, the air outlet end of the second charging valve 23 is connected with the air inlet end of the blowing gas cylinder group 21, the air outlet end of the blowing gas cylinder group 21 is connected with the engine blowing gas source inlet in sequence after the second high-pressure electromagnetic valve 24 and the pressure reducing valve 25, the safety valve 26 is arranged on the gas path of the pressure reducing valve 25 for protecting the gas path after the pressure reducing valve 25 is damaged.

[0030] As shown in the figures, Figure 1 and Figure 2 the blowing gas cylinder group 21 comprises at least one gas cylinder.

[0031] The working principle of the present application is as follows:

[0032] As shown in the figures, Figure 1 and Figure 2As shown in the figure, the blow bottle group 21 provides a blow gas source for the engine, the third filter 22 and the fourth filter 28 are respectively arranged in the blow bottle group 21 charging pipeline and the engine ground blow gas source inlet, and the gas source entering the engine is filtered, the second charging valve 23 is arranged in the engine charging pipeline and the discharge pipeline, and is used for charging and discharging of the bottle, the second high-pressure electromagnetic valve 24 is arranged in the charging bottle outlet pipeline, and the high-pressure gas is separated when the engine does not need to be blown and charged, the second one-way valve 27 is arranged in the engine ground gas source charging road, and is used for preventing reverse leakage of the engine gas source. The throttle ring 16 is arranged in the engine control gas source inlet pipeline, the gas source entering the engine is pressure-regulated, the pressure reducing valve 25 is arranged in the blow bottle group outlet high-pressure electromagnetic valve outlet pipeline, and the blow gas source of the engine is pressure-reduced, and the safety valve 26 is arranged in the pressure reducing valve 25 outlet pipeline, and in the case that the pressure reducing valve 25 fails, the blow gas entering the engine meets the pressure requirement.

[0033] When the pressure in the blow bottle group 21 is reduced, the charging assembly can be used for charging, and when the pressure of the control bottle in the engine is too high, the charging assembly can also be used for pressure reduction, so as to ensure the safety of the gas pipeline.

[0034] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A purging and replenishment device for a liquid rocket engine, characterized in that, It includes a ground air source assembly, an engine, an air replenishment mechanism, and a purging mechanism. The ground air source assembly is connected to the air replenishment mechanism and the purging mechanism respectively. The air source inlet of the engine is connected to the air source outlet of the air replenishment mechanism and the purging mechanism respectively. The vent of the engine is connected to the air source inlet of the air replenishment mechanism. The air replenishment mechanism includes an air replenishment component and an exhaust component. The air inlet of the air replenishment component is connected to a ground air source, the air outlet of the air replenishment component is connected to an engine control air source inlet, the air inlet of the exhaust component is connected to an engine control air source vent, and the air outlet of the exhaust component is connected to a ground air source vent control port. The exhaust assembly includes an exhaust pipe, one end of which is connected to the engine control air source vent port, and the other end of which is connected to the second air inlet of the first air valve and the ground air source vent control port, respectively. The purging mechanism includes a purging air source assembly; The purging gas source assembly includes a purging gas cylinder group and a safety valve; The purge gas cylinder group includes at least one gas cylinder; the purge gas cylinder group is arranged in parallel; the outlet of the purge gas cylinder group is connected in series with a second high-pressure solenoid valve and a pressure reducing valve and then connected to the purge gas source inlet of the engine; the safety valve is set on the gas line of the pressure reducing valve to protect the gas line after the pressure reducing valve is damaged.

2. The purging and replenishment device for a liquid rocket engine according to claim 1, characterized in that, The ground air source assembly includes a ground air source, a ground air source venting control port, and a ground purging port. The ground air source and the ground air source venting control port are both connected to the air supply mechanism and the purging mechanism, and the ground purging port is connected to the purging mechanism.

3. The purging and replenishment device for a liquid rocket engine according to claim 1, characterized in that, The gas replenishment assembly includes a gas cylinder, a first filter, a first filling valve, a first high-pressure solenoid valve, a one-way valve, a throttle coil, and a second filter. One end of each of the first and second filters is connected to a ground air source. The other end of the first filter is connected to the first air inlet of the first inflation valve. The outlet of the first inflation valve is connected to one end of the supplementary air cylinder and one end of the first high-pressure solenoid valve. The second air inlet of the first inflation valve is connected to the exhaust assembly. The other end of the second filter is connected in series with a one-way valve and then to the other end of the first high-pressure solenoid valve and one end of the throttle coil. The other end of the throttle coil is connected to the engine control air source inlet.

4. The purging and replenishment device for a liquid rocket engine according to claim 3, characterized in that, The purging mechanism includes a purging air source assembly and a purging assembly. One end of the purging assembly is connected to the ground purging air port, and the other end of the purging assembly is connected to the engine purging air source inlet and the purging air source assembly, respectively. The air inlet of the purging air source assembly is connected to the ground air source and the ground air source venting control port.

5. The purging and replenishment device for a liquid rocket engine according to claim 4, characterized in that, The purging assembly includes a fourth filter and a second one-way valve. One end of the fourth filter is connected to the ground air source vent control port, and the other end of the fourth filter is connected to one end of the second one-way valve. The other end of the second one-way valve is connected to the purging air source assembly and the engine purging air source inlet, respectively.

6. The purging and replenishment device for a liquid rocket engine according to claim 5, characterized in that, The purge gas source assembly includes a purge gas cylinder group, a third filter, a second inflation valve, a second high-pressure solenoid valve, a pressure reducing valve, and a safety valve. One end of the third filter is connected to the ground gas source, and the other end of the third filter is connected to the first air inlet of the second inflation valve. The second air inlet of the second inflation valve is connected to the air release control port of the ground gas source, and the air outlet of the second inflation valve is connected to the air inlet of the purge gas cylinder group.

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