A noise isolation and explosion-proof window of a liquid rocket engine test stand

Abstract

The application discloses a noise isolation and explosion-proof window of a liquid rocket engine test stand, which comprises anti-explosion glass, a window frame and a wall body; the anti-explosion glass is a three-layer hollow laminated glass structure; a steel core is fixed in the window frame, and the end of the anti-explosion glass is fixed on the steel core through a fixing piece; the wall body is provided with a pre-embedded piece, and the window frame attached to the wall body is fixed with the pre-embedded piece through a first connecting piece. The noise isolation and explosion-proof window has good sound insulation and noise reduction performance, and can meet the requirements of the window of the liquid rocket engine test stand on sound insulation and noise reduction performance; meanwhile, the installation stability of the noise isolation and explosion-proof window is high, and the integrity of the overall structure of the window body can be ensured when a great impact such as engine explosion occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of noise-isolating and explosion-proof windows, and in particular to a noise-isolating and explosion-proof window of a liquid rocket engine test bench. Background Art

[0002] During liquid rocket engine testing, personnel must carry out related work in the test stand's test and control room. Liquid rocket engines generate significant noise during testing. It has been estimated that the noise generated by the gas jet of a liquid rocket engine has a sound power of approximately 0.4% to 0.8% of the engine power, with a maximum sound pressure level of 160 to 170 dB, exceeding 185 dB in the near field of the jet. The spectrum is very wide, ranging from approximately 20 to 10,000 Hz. This level of noise is extremely harmful to human health, thus placing high demands on the sound insulation and noise reduction performance of windows. Furthermore, the windows are required to be explosion-proof to prevent the shock wave of a possible engine explosion from harming personnel in the test and control room.

[0003] At present, in order to meet the noise isolation and explosion-proof functions, the windows of the test bench mostly use multi-layer explosion-proof and soundproof glass, but the window frames are still ordinary window frames embedded in the test bench walls; although the windows can meet the noise isolation function under normal circumstances, a liquid rocket engine test bench once had a situation where the shock wave after the engine explosion caused the window frame and glass to fall off as a whole. Summary of the Invention

[0004] Aiming at the problem that the overall explosion-proof and noise-isolating performance of the windows of the current liquid rocket engine test bench is poor, the present invention provides a noise-isolating and explosion-proof window of the liquid rocket engine test bench.

[0005] The present invention discloses a noise-insulating and explosion-proof window for a liquid rocket engine test bench, comprising: explosion-proof glass, a window frame and a wall;

[0006] The explosion-proof glass is a three-layer hollow laminated glass structure;

[0007] A steel core is fixed in the window frame, and the ends of the explosion-proof glass are fixed to the steel core through fixing members;

[0008] An embedded part is provided in the wall, and the window frame attached to the wall is fixed to the embedded part via a first connecting part.

[0009] As a further improvement of the present invention, two oppositely arranged window frames that are not in contact with the wall are fixedly connected by a second connecting member.

[0010] As a further improvement of the present invention, the outer single-layer organic explosion-proof glass of the triple-layer hollow laminated glass is 10mm thick, and the central cavity is 20mm thick. The inner hollow organic explosion-proof glass is 10+15A+6mm thick, the hollow layer is filled with argon gas, and the film is 1.14mm PVB film.

[0011] As a further improvement of the present invention, the wall is a concrete wall with a thickness of 500 to 1000 mm, and the window opening structure provided on the wall is in the form of an outward trumpet, with an expansion angle of the trumpet being 15 to 20°.

[0012] As a further improvement of the present invention, the opening mode of the noise-isolating and explosion-proof window is an outward-opening and top-hung type.

[0013] As a further improvement of the present invention, the steel core is a rectangular stainless steel frame, the fixing piece is a rivet nut, the end of the explosion-proof glass is placed in the rectangular stainless steel frame and the upper and lower ends are fixed in the rectangular stainless steel frame by the rivet nuts.

[0014] As a further improvement of the present invention, the first connecting member is an angle steel, and the second connecting member is a steel strip.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The noise-isolating and explosion-proof windows of the present invention have good sound insulation and noise reduction properties, and can meet the sound insulation and noise reduction performance requirements of the windows of the liquid rocket engine test bench; at the same time, the noise-isolating and explosion-proof windows of the present invention have high installation stability, and can still ensure the integrity of the overall structure of the window when a huge impact such as an engine explosion occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the noise-isolating and explosion-proof window of the liquid rocket engine test bench disclosed in the present invention;

[0018] Figure 2 for Figure 1 Cross-sectional view of AA;

[0019] Figure 3 for Figure 1 Cross-sectional view of the BB.

[0020] In the picture:

[0021] 1. Explosion-proof glass; 2. Window frame; 3. Steel core; 4. Fixing parts; 5. First connecting part; 6. Embedded parts; 7. Wall; 8. Second connecting part. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] The present invention is described in further detail below with reference to the accompanying drawings:

[0024] like Figure 1-3 As shown, the present invention provides a noise-insulating and explosion-proof window for a liquid rocket engine test bench, comprising: explosion-proof glass 1, a window frame 2 and a wall 7; wherein,

[0025] The explosion-proof glass 1 of the present invention is a three-layer hollow laminated glass structure. Specifically, the outer layer of the three-layer hollow laminated glass is 10 mm thick, and the central cavity is 20 mm thick. The inner layer of hollow organic explosion-proof glass is 10 mm thick, 15 mm thick, and 6 mm thick. The hollow layer is filled with argon gas, and the film is 1.14 mm PVB film. The total thickness of the glass is 61 mm.

[0026] The window frame 2 of the present invention is fixed with a steel core 3, and the end of the explosion-proof glass 1 is fixed to the steel core 3 through a fixing member 4, thereby ensuring the rigidity of the window frame while improving its sound insulation performance; specifically: Figure 2 、 3 As shown, the steel core 3 is a rectangular stainless steel frame, the fixing part 4 is a rivet nut, the end of the explosion-proof glass 1 passes through the window frame 2 and is placed in the rectangular stainless steel frame, and the upper and lower ends are fixed in the rectangular stainless steel frame by rivet nuts, completing the stable installation of the explosion-proof glass 1 on the window frame 2.

[0027] The wall 7 of the present invention is provided with embedded parts 6, and the window frame 2 that fits the wall is fixed to the embedded parts 6 through the first connecting member 5. Figure 2 The two oppositely disposed window frames 2 of the non-adherent wall are fixedly connected by a second connecting member 8, as shown Figure 3 Specifically, the first connecting member 5 is an angle steel and can be fixed to the window frame 2 and the embedded member 6 by screwing or welding. The second connecting member 8 is a steel pressure strip and can be fixed to the window frame 2 by screwing or welding. The window frame 2 of the present invention is embedded in the wall to ensure its firmness under the action of shock waves.

[0028] The wall 7 of the present invention is a concrete explosion-proof wall with a thickness of 500 to 1000 mm. The window opening structure provided on the wall 7 is in the form of an outward-facing bell mouth with an expansion angle of 15 to 20 degrees, which expands the field of view and meets the observation requirements during the test run.

[0029] The noise-insulating and explosion-proof window of the present invention is opened outwardly and hung top-down, which meets the requirements of ventilation and air permeability in normal times, and can effectively prevent shock waves from rushing the window inwards when an accident occurs during a test run.

[0030] The advantages of the present invention are:

[0031] The noise-isolating and explosion-proof windows of the present invention have good sound insulation and noise reduction properties, and can meet the sound insulation and noise reduction performance requirements of the windows of the liquid rocket engine test bench; at the same time, the noise-isolating and explosion-proof windows of the present invention have high installation stability, and can still ensure the integrity of the overall structure of the window when a huge impact such as an engine explosion occurs.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A noise-proof and explosion-proof window for a liquid rocket engine test bench, characterized in that: include: explosion-resistant glass, window frames and walls; The explosion-proof glass is a three-layer hollow laminated glass structure; A steel core is fixed in the window frame, and the ends of the explosion-proof glass are fixed to the steel core by fixing members; wherein the steel core is a rectangular stainless steel frame, and the fixing members are rivet nuts, and the ends of the explosion-proof glass are placed in the rectangular stainless steel frame and the upper and lower ends are fixed in the rectangular stainless steel frame by the rivet nuts; An embedded part is provided in the wall, and the window frame attached to the wall is fixed to the embedded part via a first connecting part.

2. The noise-isolating and explosion-proof window of the liquid rocket engine test bench according to claim 1, characterized in that: The two window frames that are arranged opposite to each other and are not in contact with the wall are fixedly connected by a second connecting member.

3. The noise-isolating and explosion-proof window of the liquid rocket engine test bench according to claim 1 or 2, characterized in that: The outer single-layer organic explosion-proof glass of the three-layer hollow laminated glass is 10mm thick, the middle cavity is 20mm thick, the inner layer of hollow organic explosion-proof glass is 10+15A+6mm thick, the hollow layer is filled with argon gas, and the film is 1.14mm PVB film.

4. The noise-isolating and explosion-proof window of the liquid rocket engine test bench according to claim 1 or 2, characterized in that: The wall is a concrete wall with a thickness of 500-1000 mm. The window opening structure arranged on the wall is in the form of an outward trumpet, and the expansion angle of the trumpet is 15-20 degrees.

5. The noise-isolating and explosion-proof window of the liquid rocket engine test bench according to claim 1 or 2, characterized in that: The opening mode of the noise-isolating and explosion-proof window is an outward-opening and top-hung type.

6. The noise-isolating and explosion-proof window of the liquid rocket engine test bench according to claim 2, characterized in that: The first connecting member is an angle steel, and the second connecting member is a steel strip.

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