Valve group shared by double liquid rocket engines

Abstract

The invention relates to a valve group shared by two liquid rocket engines. The valve group comprises a valve group seat, a functional multi-way seat, a connecting rod, a screw-in filler neck, an internal guide pipe and an electromagnetic valve, the valve is fixed on the valve group seat, the valve group seat is provided with an air source flow channel, the air source flow channel is provided with a threaded hole for screwing in the screw-in filler neck, and the screw-in filler neck is connected with an inlet of the electromagnetic valve through an internally-arranged guide pipe; the two ends of the functional multi-way seat are fixedly connected to the valve group seat through connecting rods respectively; the main section of the functional multi-way base is T-shaped, the lower end face is provided with an inlet filler neck used for being connected with an outlet of the electromagnetic valve, and the left and right end faces of the upper portion are symmetrically provided with outlet filler necks connected with execution structures of engines on the corresponding sides respectively. The problem of common valve group conversion in the existing single-machine assembly double-machine process is solved, rapidness and reliability are achieved, and the problems that the positions of single-machine and double-machine valve groups are not unified, and guide pipes are not shared are solved; the control system is simplified, engine state control is facilitated, the working efficiency is improved, and the productivity of the engine is improved.

Description

Technical Field

[0001] The invention belongs to the field of liquid rocket engine design and relates to a dual-engine common valve group of liquid rocket engines. Background Art

[0002] The actuators of liquid rocket engines are usually controlled by various valves. The centralized arrangement of valves makes the engine structure compact, the cables clear, and easy to maintain and test.

[0003] Many liquid rocket engines use two engines in parallel, with some of the engine's actuators controlled by independent valve groups and the rest controlled by shared valve groups. Reasonable layout of the valve group can not only reduce the complexity of the control pipeline, but also avoid messy electrical interfaces. After the engine calibration test, it enters the dual-engine assembly stage, but the shared valve group and external connection pipelines become repeated assembly items. Reason: During the single-engine calibration test, a complete set of valve groups is required for both independent and dual-engine use. The shared valve group needs to be temporarily installed on the single machine with a bracket for fixation, so a conduit in this layout state needs to be configured. When assembling the dual engines later, the shared valve group is located in the middle of the dual-engine rack, and another bracket and conduit for the valve group in this layout state are required. In this way, there is a problem of secondary installation after the shared valve group and small conduit are removed during the single-engine dual-engine process. Manpower and time costs increase accordingly.

[0004] As engine production capacity increases, the installation of shared valve groups and small ducts for dual engines has become a bottleneck restricting production capacity. Therefore, a quick way is needed to solve the problem of disassembly and assembly of shared valve groups when switching between single and dual engines. Summary of the invention

[0005] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art and propose a liquid rocket engine dual-engine shared valve group, to solve the problem of converting the shared valve group in the process of assembling a single-engine to a dual-engine liquid rocket engine, which is fast and reliable, and avoids the problems of inconsistent positions of the single and dual-engine valve groups and non-sharing of conduits; at the same time, it ensures that the number and status of the solenoid valves are the same in the single-engine and dual-engine states, which is conducive to simplifying the control system and facilitating engine state control, improving work efficiency, and increasing the engine's production capacity.

[0006] The solution of the present invention is:

[0007] A dual-engine common valve group for a liquid rocket engine, comprising a valve group seat, a multi-function seat, a connecting rod, a screw-in nozzle, an internal conduit, and a solenoid valve;

[0008] The valve is fixed on the valve assembly seat, and the valve assembly seat is provided with an air source flow channel, and a threaded hole is provided on the top surface or side surface of the air source flow channel, and the threaded hole is used to screw in a screw-in nozzle, and the screw-in nozzle is connected to the inlet of the solenoid valve through an internal conduit;

[0009] Both ends of the functional multi-way seat are fixedly connected to the valve group seat by connecting rods; the main cross-section of the functional multi-way seat is T-shaped, and an inlet nozzle is arranged on the lower end face for connecting with the outlet of the solenoid valve, and outlet nozzles are symmetrically arranged on the left and right end faces of the upper part, which are respectively connected to the execution structure of the engine on the corresponding side.

[0010] Preferably, the valve assembly is fixed to the engine on one side via a valve assembly seat.

[0011] Preferably, the valve assembly seat is used to fix valves of different models.

[0012] Preferably, the valve assembly seat provides different gas source flow channels for different valves.

[0013] Preferably, the cross-section of the gas source flow channel is square.

[0014] Preferably, when a single engine is used, the end pipe nozzle on one side of the upper part of the functional multi-way seat can be plugged; when assembling dual engines, the end pipe nozzles on both sides of the upper part of the functional multi-way seat are opened.

[0015] Preferably, the connecting rod is a hollow structure, providing space for the layout of the catheter.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] (1) The present invention designs a common valve group suitable for two liquid rocket engines, which can meet the requirements of not replacing the position of the common valve group and the connecting duct when the single and double engines are interchanged, thereby reducing the overall assembly volume and improving economic benefits.

[0018] (2) The valve assembly seat of the present invention is universal and can fix valves of different models and adjust different flow channels to provide air sources for different valves as needed. The valve assembly is widely used and can adapt to engines of different models.

[0019] (3) The functional multi-way seat in the present invention is an important component for realizing the conversion of single and double engines. The upper end face of the T-shaped tee points to the two engines that are symmetrical on the left and right. When using a single engine, the air hole on the opposite end of the T-shaped tee can be blocked; when assembling a double engine, the plug on the opposite side is opened and the small duct for controlling the opposite engine is connected. The valve group exists in the same position for single and double engines, and the direction of the small duct and the electrical harness remains unchanged, which simplifies the wiring and pipe layout and reduces unnecessary workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a common valve group for two liquid rocket engines of the present invention;

[0021] Figure 2 It is a schematic diagram of the valve group seat;

[0022] Figure 3 It is a schematic diagram of a functional multi-channel seat;

[0023] Figure 4 is a schematic diagram of the connecting rod;

[0024] Figure 5 This is a schematic diagram of the actual application of a dual-engine shared valve group for liquid rocket engines. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1 As shown, the present invention provides a structure suitable for a dual-engine common valve group of a liquid rocket engine, which can effectively simplify the single-engine to dual-engine conversion process and eliminate unnecessary conduits. It includes a valve group seat 1.1, a functional multi-pass seat 1.2, a connecting rod 1.3, a screw-in nozzle 1.4, an internal conduit 1.5, a solenoid valve 1.6 and other components. It has the characteristics of simple structure, reliable installation, strong versatility and practicality.

[0027] Valve seat structure Figure 2 As shown, different types of valves can be connected through the fixing hole 2.1, and different air source flow channels 2.2 can be provided for different valves as needed. The length, cross section and direction of the flow channel can be adjusted. The flow channel cross section is square, and a threaded hole 2.3 can be set on the top or side of the flow channel structure to screw in the screw-in nozzle, and then connected to the inlet of the solenoid valve through the internal conduit 1.5, as the inlet of the solenoid valve air source. The valve group is connected to the engine through the four mounting holes 1.7 on the valve group seat 1.1 and the mounting ears 1.8 on the two multi-function seats, realizing three-point fixed support, and the weight reduction hole 2.5 makes the structure more stable. All valve harnesses are connected to the engine as a whole through the connector fixing hole 2.4.

[0028] The valve is fixed on the valve block seat 1.1, and the threaded hole 2.3 is used to screw in a screw-in pipe nozzle, which is connected to the inlet of the solenoid valve through an internal conduit 1.5; both ends of the functional multi-way seat 1.2 are fixedly connected to the valve block seat 1.1 through connecting rods 1.3; the main section of the functional multi-way seat is T-shaped, and an inlet pipe nozzle 3.1 is arranged on the lower end face for connecting with the outlet of the solenoid valve, and outlet pipe nozzles 3.2 are symmetrically arranged on the left and right end faces of the upper part, respectively connected to the execution structure of the engine on the corresponding side.

[0029] like Figure 3 As shown in the figure, the functional multi-way seat is used to symmetrically transmit the fluid output by the valve to the actuators of the engines on both sides. The main section of the multi-way seat is T-shaped, and the nozzle on the lower end of the multi-way seat is connected to the outlet of the solenoid valve through a small conduit, which serves as the input port of the functional multi-way seat. The upper double-sided output ports are arranged symmetrically on the left and right, and are respectively connected to the actuators of the engines on both sides. The multi-way seat has a simple structure and is reliable.

[0030] like Figure 4 As shown, the connecting rod connects the valve block seat and the functional multi-way through bolts and fixing holes 4.1, and provides layout and direction space for the connecting conduits of the two, which is easy to disassemble and assemble.

[0031] like Figure 5 As shown, it is assumed that the two engines to be assembled are engine A and engine B respectively.

[0032] Assemble engine A and engine B separately.

[0033] When assembling engine A or engine B, the common valve group is fixed to the engine setting position and connected to the small conduit of the external actuator. The end face of the pipe nozzle on one side of the upper part of the functional multi-pass seat is blocked. After the calibration ignition test is passed, engine B is assembled on the valve group of engine A.

[0034] The valve group and external small conduit of engine A remain unchanged, and the nozzle blocked at the outlet of the functional multi-way seat is opened. Only the valve group of engine B is removed, and the connecting small conduit is temporarily fixed by a fixing tool. When both engines are fixed on the dual-engine frame, the small conduit temporarily fixed on engine B can be directly connected to the valve group of engine A. At this time, the valve group of engine A becomes a shared valve group for both engines.

[0035] Similarly, when the twin engines assembled by engine A and engine B are decomposed into single engine A and single engine B, the common valve group of the twin engines is retained on engine A, and the conduit connected to engine B is disconnected and fixed with a tool. The common valve group of the twin engines becomes a component of engine A. A new common valve group is installed at the corresponding position of engine B, and the small conduit can be directly connected.

[0036] The consistency of the state of the single-engine and double-engine common valve group has become a trend in engine layout optimization. It is more conducive to mass production and process standardization. The double-engine common valve group of a liquid rocket engine of the present invention has a simple structure and strong versatility. In the process of single-engine and double-engine assembly, only one common valve group needs to be removed, and its connecting duct can still be used when the layout direction remains unchanged, thereby reducing the workload of general assembly.

[0037] Parts of the present invention that are not described in detail belong to common knowledge among those skilled in the art.

Claims

1. A dual-engine common valve group for liquid rocket engines, characterized in that: It includes a valve group seat, a multi-function seat, a connecting rod, a screw-in nozzle, an internal conduit, and a solenoid valve; The valve is fixed on the valve assembly seat, and the valve assembly seat is provided with an air source flow channel, and a threaded hole is provided on the top surface or side surface of the air source flow channel, and the threaded hole is used to screw in a screw-in nozzle, and the screw-in nozzle is connected to the inlet of the solenoid valve through an internal conduit; Both ends of the functional multi-way seat are fixedly connected to the valve group seat by connecting rods; the main cross-section of the functional multi-way seat is T-shaped, and an inlet nozzle is arranged on the lower end face for connecting with the outlet of the solenoid valve, and outlet nozzles are symmetrically arranged on the left and right end faces of the upper part, which are respectively connected to the execution structure of the engine on the corresponding side.

2. A dual-engine common valve group for liquid rocket engines according to claim 1, characterized in that: The valve block is fixed to the engine on one side through the valve block seat.

3. A dual-engine common valve group for liquid rocket engines according to claim 2, characterized in that: The valve block seat is used to fix valves of different models.

4. A dual-engine common valve group for liquid rocket engines according to claim 3, characterized in that: The valve block seat provides different gas source flow paths for different valves.

5. A dual-engine common valve assembly for liquid rocket engines according to claim 1, characterized in that: The cross section of the gas source flow channel is square.

6. A dual-engine common valve assembly for liquid rocket engines according to claim 1, characterized in that: When using a single engine, just plug the end pipe nozzle on one side of the upper part of the functional multi-way seat; when assembling dual engines, open the end pipe nozzles on both sides of the upper part of the functional multi-way seat.

7. A dual-engine common valve assembly for liquid rocket engines according to claim 1, characterized in that: The connecting rod is a hollow structure, providing space for the layout of the catheter.

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