Filling device for testing cooling channel of thrust chamber body of liquid-propellant rocket engine

Abstract

A filling device for testing a cooling channel of a thrust chamber body of a liquid rocket engine can be used for testing flow resistance of a single-hole rectangular cooling channel of the thrust chamber body of the liquid rocket engine and comprises a filling section, a sealing section, a main sealing gasket, a sealing ring, an adapter plate, an air cylinder and a liquid inlet pipeline. A sealing ring is mounted in a groove in the bottom of the sealing section; the filling section is fixedly connected with the sealing section; the adapter plate is connected with the air cylinder, and the filling section is provided with a claw for quick positioning and is connected with the adapter plate; a groove is formed in the top of the sealing section, and the main sealing gasket is located in the groove. The central part of the main sealing gasket is rectangular and hollow; the micro filling pipe core extending out of the bottom of the groove of the sealing section penetrates through the main sealing gasket and extends out; a liquid inlet hole is formed in the side face of the filling section, the liquid inlet pipeline is connected with the liquid inlet hole in the side face of the filling section, and inner flow channels are arranged in the filling section and the sealing section so that the liquid inlet hole can be communicated with the micro filling pipe core. The flow coefficient and the flow characteristic of each cooling channel can be measured.

Description

TECHNICAL FIELD

[0001] The application relates to a filling device for liquid rocket engine thrust chamber body cooling channel test, which can be used for liquid rocket engine thrust chamber body single-hole rectangular cooling channel flow resistance test. BACKGROUND

[0002] The thrust chamber is a core component of a liquid rocket engine, and the flow uniformity and flow resistance characteristics of the cooling channel of the thrust chamber have a direct impact on the heat exchange efficiency and combustion stability of the rocket engine. Differences in the processing state of various cooling channels can cause the cooling hydrogen flow in the channel to be smaller than the design value when the local flow resistance is large or the flow coefficient is small, and in severe cases, the inner wall can be burned through and the thrust chamber can be burned out.

[0003] The traditional liquid flow test device is only used for overall liquid flow test of the thrust chamber body of a liquid rocket engine, and cannot realize liquid inlet and sealing of a single rectangular cooling channel. Therefore, a liquid flow test filling device for a single cooling channel of a thrust chamber body is needed, which can measure the flow coefficient and flow characteristics of the single cooling channel of the thrust chamber body, and there is no such test device in the prior art that can meet the liquid inlet and sealing of a single cooling channel. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the shortcomings of the prior art, and to realize the filling and sealing of a single cooling channel of a thrust chamber body by applying a pre-tightening force through a gas cylinder, so as to measure the flow coefficient and flow characteristics of each cooling channel.

[0005] The purpose of the application is achieved by the following technical solutions:

[0006] A filling device for liquid rocket engine thrust chamber body cooling channel test, comprising a filling section, a sealing section, a main sealing pad, a sealing ring, an adapter plate, a gas cylinder and a liquid inlet pipeline;

[0007] The sealing ring is installed in the groove at the bottom of the sealing section; the filling section and the sealing section are fixedly connected; the adapter plate is connected with the gas cylinder, the filling section is provided with quick positioning hooks, and the filling section is connected with the adapter plate;

[0008] The top of the sealing section is provided with a groove, and the main sealing pad is located in the groove; the central part of the main sealing pad is rectangular and hollow, and a micro filling pipe core protruding from the bottom of the groove of the sealing section extends out through the main sealing pad;

[0009] The filling section is provided with a liquid inlet hole, the liquid inlet pipeline is connected with the liquid inlet hole on the side surface of the filling section, and the inside of the filling section and the sealing section is provided with an inner flow channel, so that the liquid inlet hole is connected with the micro filling pipe core.

[0010] In an embodiment of the present application, the filling device further comprises a first fastener, and the filling section and the sealing section are fixedly connected by the first fastener.

[0011] In an embodiment of the present application, the filling device further comprises a second fastener, and the filling section is connected with the adapter plate by the second fastener.

[0012] In an embodiment of the present application, the bottom of the sealing section is provided with an O-shaped sealing ring groove, and the sealing ring is located in the O-shaped sealing ring groove.

[0013] In an embodiment of the present application, the cylinder is provided with a control gas inlet hole and an exhaust hole, and a speed reduction nozzle is arranged in front of the control gas inlet hole to slow down the running speed of the cylinder.

[0014] In an embodiment of the present application, the control gas is provided to the cylinder by the gas distribution platform, the cylinder is opened by the current signal, the cylinder generates a pre-tightening force, and the filling device is driven to move horizontally forward.

[0015] In an embodiment of the present application, the main sealing gasket is used for sealing the cooling channel of the tested sample and the filling device.

[0016] In an embodiment of the present application, the assembly and working process of the filling device are as follows:

[0017] a. The sealing ring is placed in the groove of the sealing section;

[0018] b. The filling section and the sealing section are connected;

[0019] c. The adapter plate is connected with the cylinder;

[0020] d. The filling section and the adapter plate are quickly connected by the positioning hook;

[0021] e. The main sealing gasket is placed in the groove at the top of the sealing section through the micro filling tube core, after the centering of the rectangular cooling channel of the body of the thrust chamber is completed, the control gas is provided to the cylinder by the gas distribution platform, the cylinder is opened by the current signal, the pre-tightening force generated by the cylinder, the cylinder drives the entire filling device to move horizontally forward, the micro filling tube core is inserted into the cooling channel of the body of the thrust chamber, and the main sealing gasket is uniformly compressed on the circumferential arc surface of the cooling channel of the tested sample to generate a sealing effect;

[0022] f. Water flows into the micro filling tube core through the filling section side liquid inlet hole and enters the cooling channel of the body of the thrust chamber;

[0023] g. After the filling is completed, the test medium supply is cut off, the exhaust hole of the cylinder is opened, the cylinder is retracted, and the filling device is withdrawn from the cooling channel hole of the body of the thrust chamber.

[0024] h.Repeat the above cylinder sealing action, complete the flow resistance test of different cooling channels. After the whole test is completed, remove the filling device to complete the whole test process.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] (1) The filling device of the present application combines visual recognition and automation, and for the first time realizes liquid flow test of the cooling channels of the thrust chamber body one by one, evaluates the flow characteristics of each cooling channel of the thrust chamber body, and improves the test coverage of the engine.

[0027] (2) The filling device of the present application realizes the sealing of a single 2mm-wide cooling channel of the thrust chamber body, and provides a possibility for testing the cooling channels of the thrust chamber body of the engine.

[0028] (3) The filling device of the present application adopts an insertion sealing design, inserts a 1mm-wide filling tube core into a 2mm-wide cooling channel by applying a pre-tightening force by a cylinder, and realizes sealing by a main sealing gasket; the insertion sealing design makes the flow resistance measured each time basically constant, improving the accuracy of the test.

[0029] (4) The square groove bottom of the sealing section of the filling device of the present application adopts a circular arc design, the radius is consistent with the test piece, and the circumferential direction is transmitted to the main sealing gasket during the pre-tightening process by the cylinder, and the sealing effect is better.

[0030] (5) The filling device of the present application adopts a segmented design, which is convenient to install and disassemble, and is provided with a detachable main sealing gasket, and has the advantages of simple structure, convenient operation, similar structure sealing can adopt this form, and high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the filling device as a whole.

[0032] Figure 2 It is a horizontal sectional view of the filling device.

[0033] Figure 3 It is a vertical sectional view of the sealing section.

[0034] Figure 4 It is a sealing schematic diagram of the sealing section.

[0035] Legend: filling section-1, sealing section-2, main sealing gasket-3, sealing ring-4, first fastener-5, second fastener-6, adapter plate-7, cylinder-8, liquid inlet pipeline-9, thrust chamber body cooling channel opening-10. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0037] A filling device for liquid rocket engine thrust chamber body cooling channel test, the overall schematic diagram of the filling device is shown in Figure 1 , which has the functions of medium filling and sealing. The horizontal section view of the filling device is shown in Figure 2 , the vertical section view of the sealing section is shown in Figure 3 , which shows the schematic relationship between the main sealing pad and the sealing section; the sealing section sealing schematic diagram is shown in Figure 4 , which shows the schematic relationship between the sealing section and the product cooling channel.

[0038] A filling device for liquid rocket engine thrust chamber body cooling channel test, comprising a filling section 1, a sealing section 2, a main sealing pad 3, a sealing ring 4, a first fastener 5, a second fastener 6, an adapter plate 7, a gas cylinder 8, a liquid inlet pipeline 9.

[0039] The filling section 1 and the sealing section 2 are provided with the same bolt hole group, the bottom of the sealing section 2 is provided with an O-shaped sealing ring groove, the sealing ring 4 is placed in the O-shaped sealing ring groove, and the filling section 1 and the sealing section 2 are fixedly connected through the first fastener 5; the adapter plate 7 is provided with bolt holes, and is connected with the gas cylinder 8 through a sunk groove bolt. The filling section 1 is provided with a quick positioning hook claw, and the second fastener 6 is connected with the adapter plate 7.

[0040] The top of the sealing section 2 is provided with a groove, and the main sealing pad 3 is placed in the square groove. The center part of the main sealing pad 3 is a rectangular hollow. A micro filling pipe core protruding from the bottom of the top groove of the sealing section 2 extends out through the main sealing pad 3.

[0041] The side of the filling section 1 is provided with a liquid inlet hole, the liquid inlet pipeline 9 is connected with the liquid inlet hole in the side of the filling section 1 in a screwed form, and the inside of the filling section 1 and the sealing section 2 is provided with an inner flow channel.

[0042] The gas cylinder 8 is provided with a control gas inlet hole and an exhaust hole, and a speed reduction nozzle is arranged in front of the control gas inlet hole, which can slow down the running speed of the gas cylinder.

[0043] The assembly and working process of the filling device are as follows:

[0044] a. The sealing ring 4 is placed in the O-shaped sealing ring groove of the sealing section 2.

[0045] b. The filling section 1 and the sealing section 2 are connected through the first fastener 1.

[0046] c. The adapter plate 7 is connected with the gas cylinder 8 through a sunk groove bolt.

[0047] d. The filling section 1 is quickly connected to the adapter plate 7 by positioning the hook.

[0048] e. The main seal 3 is placed in the square groove of the sealing section 2 through the micro filling tube core. After the centering of the rectangular cooling channel of the thrust chamber body is completed, the control gas of 0.5 MPa is provided to the cylinder 8 by the gas distribution table. The cylinder is opened by the electric current signal, and the cylinder generates a pre-tightening force of about 360 N. The cylinder pushes the filling device to move horizontally forward, the micro filling tube core is inserted into the cooling channel port 10 of the thrust chamber body, the main seal 3 is uniformly compressed on the circumferential arc surface of the cooling channel of the test piece, and the sealing effect is generated.

[0049] f. Water flows into the cooling channel of the thrust chamber body through the micro filling tube core through the side liquid inlet hole of the filling section 1.

[0050] g. After the filling is completed, the test medium supply is cut off, the gas discharge hole of the cylinder 8 is opened, the cylinder is retracted, and the filling device is withdrawn from the cooling channel hole of the thrust chamber body.

[0051] h. The above-mentioned sealing action of the cylinder 8 is repeated to complete the flow resistance test of different cooling channels. After the whole test is completed, the filling device is removed, and the whole test process is completed.

[0052] The contents not described in detail in the specification of the present application are the known technology of those skilled in the art.

[0053] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

Claims

1. A fill device for liquid rocket engine thrust chamber barrel cooling channel testing, characterized by, It comprises a filling section (1), a sealing section (2), a main sealing gasket (3), a sealing ring (4), an adapter plate (7), a cylinder (8), and a liquid inlet pipeline (9); The sealing ring (4) is installed in the groove at the bottom of the sealing section (2); the filling section (1) and the sealing section (2) are fixedly connected; the adapter plate (7) is connected with the cylinder (8), and the filling section (1) is provided with a quick positioning hook claw, and the filling section (1) is connected with the adapter plate (7); The top of the sealing section (2) is provided with a groove, and the main sealing gasket (3) is located in the groove; the central part of the main sealing gasket (3) is a rectangular hollow part, and a micro filling tube core protruding from the bottom of the groove of the sealing section (2) extends through the main sealing gasket (3) and extends out; The filling section (1) is provided with a liquid inlet hole at the side, the liquid inlet pipeline (9) is connected with the liquid inlet hole at the side of the filling section (1), and the filling section (1) and the sealing section (2) are both provided with an internal flow channel, so that the liquid inlet hole is communicated with the micro filling tube core.

2. The filling device according to claim 1, characterized in that The filling device further comprises a first fastener (5) for fixedly connecting the filling section (1) and the sealing section (2).

3. The filling device of claim 1, wherein The filling device further comprises a second fastener (6) for connecting the filling section (1) and the adapter plate (7).

4. The fill 'n go device according to claim 1, characterized in that The bottom of the sealing section (2) is provided with an O-shaped sealing ring groove, and the sealing ring (4) is located in the O-shaped sealing ring groove.

5. The fill 'n go device according to claim 1, characterized in that The cylinder (8) is provided with a control gas inlet hole and an exhaust hole, and a speed reduction nozzle is arranged in front of the control gas inlet hole, which can slow down the running speed of the cylinder (8).

6. The fill 'n go device according to claim 1, characterized in that The control gas is provided to the cylinder (8) by a gas distribution table, the cylinder (8) is opened by an electric current signal, the cylinder (8) generates a pre-tightening force, and drives the filling device to move horizontally forward.

7. The filling apparatus of claim 1, wherein The main sealing gasket (3) is used for sealing the filling device and a cooling channel of a test piece.

8. The filling apparatus of claim 1, wherein The assembly and working process of the filling device are as follows: a. The sealing ring (4) is placed in the groove of the sealing section (2); b. The filling section (1) and the sealing section (2) are connected; c. The adapter plate (7) is connected with the cylinder (8); d. The filling section (1) is quickly connected with the adapter plate (7) through the positioning hook claw; e. The main sealing gasket (3) is placed in the groove at the top of the sealing section (2) through the micro filling tube core, after the centering of the rectangular cooling channel of the body of the thrust chamber is completed, the control gas is provided to the cylinder (8) by the gas distribution table, the cylinder (8) is opened by the electric current signal, the pre-tightening force generated by the cylinder (8) drives the entire filling device to move horizontally forward, the micro filling tube core is inserted into the cooling channel port (10) of the body of the thrust chamber, and the main sealing gasket (3) is uniformly compressed on the circumferential arc surface of the cooling channel of the test piece, thereby generating a sealing effect; f. Water flows into the cooling channel of the body of the thrust chamber through the micro filling tube core from the liquid inlet hole at the side of the filling section (1); g. After the filling is completed, the supply of the test medium is cut off, the exhaust hole of the cylinder (8) is opened, the cylinder (8) is retracted, and the filling device is withdrawn from the cooling channel hole of the body of the thrust chamber; h. The sealing action of the cylinder (8) is repeated to complete the flow resistance test of different cooling channels.

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