Vertical water pressure and volume measuring tool for solid rocket engine shell

Abstract

The utility model belongs to the technical field of composite material shell manufacturing, and particularly relates to a solid rocket engine shell vertical type water pressure and volume measuring tool which comprises a support, an engine shell is arranged above the support, a rear blanking cap is fixedly installed at the bottom of the engine shell, the rear blanking cap is arranged at the top of the support, and the rear blanking cap is connected with the support. The rear blanking cap is fixedly installed on the support through installation bolts, the front blanking cap is fixedly installed on the top of the engine shell, the exhaust pipe is fixed to the interior of the front blanking cap in a penetrating mode, the interior of the exhaust pipe is communicated with the interior of the engine shell, and a penetrating type through hole is formed in the support. According to the utility model, a vertical arrangement is adopted, and the engine housing is not bent and deformed during a hydrostatic test, so that the straightness of the engine housing can be ensured; meanwhile, air in the shell can be completely discharged, the volume of the engine shell can be accurately measured and calculated through the discharged water amount after the hydrostatic test is completed, and then the actual explosive loading amount of the engine shell is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material shell manufacturing, in particular to a vertical water pressure and volume measurement tool for a solid rocket engine shell. Background Art

[0002] A solid rocket motor is a chemical rocket engine that uses solid propellant, also known as a solid propellant rocket engine. After ignition, the solid propellant burns in the combustion chamber, converting chemical energy into heat energy, producing high-temperature and high-pressure combustion products. These combustion products flow through the nozzle, where they expand and accelerate, converting thermal energy into kinetic energy, and are expelled from the nozzle at high speed, generating thrust. During the manufacturing process, the volume of the solid rocket motor casing must be measured to determine the actual charge weight, and this measurement requires the use of a measuring tool.

[0003] At present, solid rocket engine casings are mostly placed horizontally during water pressure testing. However, due to the excessive length of the engine casing, the weight of the casing filled with water is large during water pressure testing, which causes the casing to deform and affects the casing straightness. At the same time, when placed horizontally, gas is easily retained inside the casing, and the volume of the engine casing cannot be accurately calculated by the amount of water discharged, which in turn affects the measurement of the actual charge. Therefore, a vertical water pressure and volume measurement tool for solid rocket engine casings is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art and solve the problems in the above-mentioned background technology, the utility model proposes a vertical water pressure and volume measurement tool for a solid rocket engine casing.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: a vertical water pressure and volume measurement tool for a solid rocket engine casing of the present invention comprises a bracket, an engine casing is arranged above the bracket, a rear plugging cover is fixedly installed on the bottom of the engine casing, the rear plugging cover is arranged on the top of the bracket, the rear plugging cover is fixed to the bracket by mounting bolts, and a front plugging cover is fixedly installed on the top of the engine casing;

[0006] An exhaust pipe is fixedly installed inside the front cover, and the inside of the exhaust pipe is communicated with the inside of the engine housing;

[0007] A through-hole is provided inside the bracket, a water inlet pipe and a pressure gauge are fixed through the inside of the rear plugging cover, the bottom of the pressure gauge extends to the outside of the rear plugging cover, the bottom of the pressure gauge passes through the through-hole, and the inside of the water inlet pipe is in communication with the inside of the engine housing;

[0008] A guide assembly is provided between the rear blocking cover and the bracket.

[0009] Preferably, support rods extend outwardly around the bottom of the bracket.

[0010] Preferably, the bottom of the rear blocking cover fits in with the top of the bracket.

[0011] Preferably, one end of the water inlet pipe passes through the through hole and the bracket.

[0012] Preferably, the guide assembly includes guide blocks fixedly connected to the left and right sides of the top of the bracket, and guide grooves are provided on the left and right sides of the bottom of the rear cover, and the guide blocks are inserted into the guide grooves.

[0013] Preferably, a through-type slide groove is provided inside the guide block, and sliders are slidably connected to the left and right sides of the slide groove, a spring is fixedly connected between the two sliders, a clamping block is fixedly connected to one side of the slider, and clamping grooves are provided on the left and right sides of the guide groove, and the outer surface of the clamping block is clamped in the clamping groove.

[0014] Preferably, the outer surface of the card block and the interior of the card slot are both arranged in an arc shape.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model adopts a vertical placement, and the engine casing will not bend or deform during the water pressure test, which can ensure the straightness of the engine casing; at the same time, the air inside the casing can be completely discharged. After the water pressure test is completed, the volume of the engine casing can be accurately measured by the amount of water discharged, and then the actual charge amount of the engine casing can be obtained.

[0017] 2. The utility model guides and positions the engine housing during hoisting by inserting the guide block into the guide groove, and facilitates the connection and installation of the engine housing and the top of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure in Example 1;

[0020] Figure 2 This is a bottom-up structural diagram of the first embodiment;

[0021] Figure 3 It is a schematic diagram of a partial front cross-section structure in Example 1;

[0022] Figure 4 For Example 1 Figure 3 Enlarged structural diagram at point A in the middle.

[0023] In the figure: 1. Engine housing; 2. Bracket; 3. Rear plug cover; 4. Front plug cover; 5. Water inlet pipe; 6. Exhaust pipe; 7. Pressure gauge; 8. Through hole; 9. Mounting bolt; 10. Guide groove; 11. Guide block; 12. Slot; 13. Block; 14. Slider; 15. Spring; 16. Slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 are within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figure 1-4 As shown, a solid rocket engine casing vertical water pressure and volume measurement tool includes a bracket 2, an engine casing 1 is arranged above the bracket 2, a rear cover 3 is fixedly installed on the bottom of the engine casing 1, and the rear cover 3 is arranged on the top of the bracket 2. The rear cover 3 is fixed to the bracket 2 by mounting bolts 9, and a front cover 4 is fixedly installed on the top of the engine casing 1;

[0027] An exhaust pipe 6 is fixedly installed inside the front cover 4, and the inside of the exhaust pipe 6 is communicated with the inside of the engine housing 1;

[0028] A through-hole 8 is provided inside the bracket 2, and a water inlet pipe 5 and a pressure gauge 7 are fixed through the inside of the rear cover 3. The bottom of the pressure gauge 7 extends to the outside of the rear cover 3, and the bottom of the pressure gauge 7 passes through the through-hole 8. The inside of the water inlet pipe 5 is in communication with the inside of the engine housing 1;

[0029] A guide assembly is provided between the rear plugging cover 3 and the bracket 2; when working, first install the rear plugging cover 3 and the front plugging cover 4 on the engine casing 1, and then hoist the engine casing 1 onto the bracket 2, and guide it through the guide assembly during hoisting, and facilitate the installation and connection between the engine casing 1 and the bracket 2, and then connect the rear plugging cover 3 with the mounting bolts 9, and after the engine casing 1 is fixed, install the water inlet pipe 5 and the pressure gauge 7 on the rear plugging cover 3, and install the exhaust pipe 6 on the front plugging cover 4. When the tooling is installed and a water pressure test is performed, clean water is added from the water inlet pipe 5, and air is discharged from the exhaust pipe 6. The air pipe 6 is excluded. When clear water continues to flow out of the exhaust pipe 6, the external exhaust pipe 6 valve is closed, and then the water inlet pipe 5 continues to be pressurized until the pressure gauge 7 shows that the pressure reaches the specified value, then the external water inlet pipe 5 valve is closed to maintain the pressure. When the water pressure test is completed, the water in the engine casing 1 is discharged from the water inlet pipe 5 into the water reservoir. The internal volume of the engine casing 1 can be calculated by measuring the volume of water in the water reservoir. A flow meter can also be installed on the water inlet pipe 5. The volume of the discharged water is measured during drainage to obtain the internal volume of the casing, thereby accurately obtaining the charge amount, making the tool easy to use and more practical.

[0030] The bottom of the bracket 2 is surrounded by support rods extending outwards. When in operation, the extended fixing rods increase the contact area between the bracket 2 and the placement surface, thereby making the bracket 2 more stable and providing more stable support to the engine housing 1.

[0031] The bottom of the rear blocking cover 3 is fitted with the top of the bracket 2; during operation, the rear blocking cover 3 can be disassembled and assembled therebetween.

[0032] One end of the water inlet pipe 5 passes through the through hole 8 and the bracket 2; when working, the water inlet pipe 5 is conveniently installed with the rear plug cover 3, and it is convenient to inject water into the engine housing 1 through the water inlet pipe 5.

[0033] The guide assembly includes guide blocks 11 fixedly connected to the left and right sides of the top of the bracket 2, and guide grooves 10 are provided on the left and right sides of the bottom of the rear cover 3, and the guide blocks 11 are inserted into the guide grooves 10; when working, the engine housing 1 is guided and positioned during hoisting by inserting the guide blocks 11 into the guide grooves 10, and it is convenient to connect and install the engine housing 1 and the top of the bracket 2.

[0034] The guide block 11 is provided with a through-type slide groove 16, and the slide blocks 14 are slidably connected to the left and right sides of the slide groove 16. A spring 15 is fixedly connected between the two slide blocks 14. A clamping block 13 is fixedly connected to one side of the slide block 14. The guide groove 10 is provided with a clamping groove 12 on the left and right sides, and the outer surface of the clamping block 13 is clamped in the clamping groove 12. During operation, when the guide block 11 is inserted into the guide groove 10, the clamping block 13 is squeezed, and after being squeezed, the clamping block 13 contracts by squeezing the slide block 14 and the spring 15, and the spring 15 After being squeezed, it has a rebound force, and then when the guide block 11 is fully inserted into the guide groove 10, the card block 13 corresponds to the card slot 12, and the rebound force of the spring 15 drives the sliding and card block 13 to move, and makes the card block 13 clamped in the card slot 12 to firmly insert the guide block 11 into the guide groove 10, thereby facilitating the pre-fixation between the engine housing 1 and the connection and installation between the engine housing 1 and the rear cover 3, and then the engine housing 1 and the bracket 2 are threadedly connected by the mounting bolts 9.

[0035] Example 2

[0036] See also Figure 4 As shown, compared with Example 1, as another implementation of the present invention, the outer surface of the clamping block 13 and the interior of the clamping slot 12 are both configured to be arc-shaped; during operation, the clamping block 13 and the clamping slot 12 are easily engaged and disengaged.

[0037] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A solid rocket engine casing vertical water pressure and volume measurement tool, comprising a bracket (2), an engine casing (1) is arranged above the bracket (2), a rear cover (3) is fixedly installed on the bottom of the engine casing (1), the rear cover (3) is arranged on the top of the bracket (2), the rear cover (3) is fixedly installed with the bracket (2) by means of mounting bolts (9), and a front cover (4) is fixedly installed on the top of the engine casing (1); Its characteristics are: An exhaust pipe (6) is fixedly inserted into the interior of the front blocking cover (4), and the interior of the exhaust pipe (6) is in communication with the interior of the engine housing (1); A through-hole (8) is provided inside the bracket (2); a water inlet pipe (5) and a pressure gauge (7) are fixedly passed through the inside of the rear plugging cover (3); the bottom of the pressure gauge (7) extends to the outside of the rear plugging cover (3); the bottom of the pressure gauge (7) passes through the through-hole (8); and the inside of the water inlet pipe (5) is communicated with the inside of the engine housing (1); A guide assembly is provided between the rear blocking cover (3) and the bracket (2).

2. The solid rocket motor case vertical water pressure and volume measurement tool according to claim 1, characterized in that: Support rods are extended outwards around the bottom of the bracket (2).

3. The solid rocket motor case vertical water pressure and volume measurement tool according to claim 2, characterized in that: The bottom of the rear blocking cover (3) is in contact with the top of the bracket (2).

4. The solid rocket motor case vertical water pressure and volume measurement tool according to claim 3, characterized in that: One end of the water inlet pipe (5) passes through the through hole (8) and the bracket (2).

5. The solid rocket motor case vertical water pressure and volume measurement tool according to claim 4, characterized in that: The guide assembly comprises guide blocks (11) fixedly connected to the left and right sides of the top of the bracket (2); guide grooves (10) are provided on the left and right sides of the bottom of the rear cover (3); and the guide blocks (11) are inserted into the guide grooves (10).

6. The solid rocket motor case vertical water pressure and volume measurement tool according to claim 5, characterized in that: A through-type sliding groove (16) is provided inside the guide block (11), and sliders (14) are slidably connected to the left and right sides of the sliding groove (16), a spring (15) is fixedly connected between the two sliders (14), and a clamping block (13) is fixedly connected to one side of the slider (14), and clamping grooves (12) are provided on the left and right sides of the guide groove (10), and the outer surface of the clamping block (13) is clamped inside the clamping groove (12).

7. The solid rocket motor case vertical water pressure and volume measurement tool according to claim 6, characterized in that: The outer surface of the clamping block (13) and the interior of the clamping slot (12) are both arranged in an arc shape.

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