Hydrostatic test tool for ignition shell

Abstract

The utility model discloses a hydrostatic test tool for an ignition shell, which belongs to the technical field of hydrostatic tests for ignition shells, and comprises a composite material winding shell and a rubber inner heat insulation layer, and the rubber inner heat insulation layer is attached to the inner side wall of the composite material winding shell. A plug is arranged in the right side of the composite material winding shell, and the right end of the plug penetrates and extends to the outer side of the right end of the composite material winding shell. The hydrostatic test tool for the ignition shell is provided with a plug, the plug is connected to the inner end of the composite material winding shell in an attached and penetrating mode, then the right end of the plug is sealed and extends to the outer side of the right end of the composite material winding shell in a penetrating mode, and the outer side of the plug is connected with a first nut in a screwed mode through a second rubber sealing ring; and the screwed first nut can be used for sealing the composite material winding shell through the second rubber sealing ring, so that the sealing effect of the composite material winding shell is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ignition shell water pressure test, specifically to a water pressure test tool for ignition shell. BACKGROUND

[0002] Ignition shell is the main component of solid rocket engine ignition device, and water pressure test is to test whether the ignition device combustion chamber shell can bear the maximum pressure of the ignition device, and to examine the ultimate bearing capacity, ultimate strength and safety margin of the combustion chamber shell. The water pressure test tool for ignition shell is a device or device for testing the pressure resistance of the ignition shell, which aims to evaluate the reliability of the ignition shell structure and the feasibility of the fiber winding process, and to ensure that the ignition shell can withstand the predetermined pressure in actual use, thereby ensuring its safety and stability.

[0003] The existing water pressure test tool can not achieve the preset pressure during the water pressure test of the ignition shell, resulting in water leakage and test failure, and reducing the practicality of the water pressure test tool. In order to overcome the above defects, the prior art 1 (Chinese patent with application number CN202322168393.4 and application date of August 14, 2023) water pressure test tool, by opening a second sealing groove on the combustion chamber shell and installing an O-shaped sealing ring two, using the second sealing groove on the combustion chamber shell to seal the side of the end face gland close to the combustion chamber shell, to ensure that the combustion chamber shell and the end face gland do not leak. Although the prior art can seal the shell, it can avoid water leakage during the experiment, but the existing ignition shell head is large, the outer end is connected by threads, and the shell is thin. If the end face is sealed, not only the sealing effect is not good, but also it is difficult to disassemble, or it takes a lot of time and effort to operate.

[0004] Therefore, we propose a water pressure test tool for ignition shell to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a water pressure test tool for ignition shell to solve the problem that the ignition shell head is large, the outer end is connected by threads, and the shell is thin, and if the end face is sealed, not only the sealing effect is not good, but also it is difficult to disassemble, or it takes a lot of time and effort to operate.

[0006] To achieve the above object, the utility model provides the following technical scheme: A hydrostatic test tool for ignition shell, including composite material winding shell and rubber inner heat insulation layer, wherein the rubber inner heat insulation layer is attached to the inner side wall of the composite material winding shell, and the right end of the composite material winding shell and the rubber inner heat insulation layer is in the shape of a circular arc; The right side of the composite material winding shell is internally provided with a plug, and the right end of the plug extends through to the outside of the right end of the composite material winding shell, and the inside of the plug is attached to the inner side wall of the composite material winding shell.

[0007] Preferably, the outside of the plug is provided with a first rubber sealing ring, and the outside of the first rubber sealing ring is attached to a first nut, and the first nut is screwed into the plug.

[0008] Preferably, the left side of the composite material winding shell is internally provided with a piston rod, and the left end of the piston rod is provided with an exhaust hole and a water inlet hole on the upper and lower sides, and the exhaust hole and the water inlet hole are symmetrically arranged about the horizontal center line of the piston rod.

[0009] Preferably, the outside of the piston rod is attached to a first rubber sealing ring, and the outside of the first rubber sealing ring is attached to the left inner wall of the composite material winding shell.

[0010] Preferably, the left end of the composite material winding shell is externally screwed into a front cover, and the diameter of the front cover is greater than the diameter of the composite material winding shell.

[0011] Preferably, the right end of the composite material winding shell is provided with a rear baffle, and the left end of the rear baffle corresponds to the front cover, and the diameters of the front cover and the rear baffle are the same.

[0012] Preferably, the inside of the front cover and the rear baffle is internally provided with a ring of screws, and the ring of screws is arranged at equal angles, and the two ends of the ring of screws are screwed into a second nut, and the inside of the two second nuts is respectively attached to the front cover and the rear baffle.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The plug is provided, the plug is attached and penetrated to the inner end of the composite material winding shell, the right end of the plug is sealed and penetrated to the outside of the right end of the composite material winding shell, the outside of the plug is tightly connected to the first nut through the second rubber sealing ring, the composite material winding shell can be sealed by the first nut after being tightened through the second rubber sealing ring, the phenomenon of water leakage and liquid leakage of the composite material winding shell in later use is avoided, and the sealing effect of the composite material winding shell is improved.

[0015] (2) further, the front cover is threadedly connected on the left side of the composite material winding shell, then the rear baffle is arranged on the right side of the composite material winding shell, the front cover and the rear baffle are connected through a circle of screw rods in thread, and the front cover and the rear baffle are positioned through a circle of second nuts, so that the composite material winding shell is protected.

[0016] (3) the piston rod is arranged, the first rubber sealing ring is arranged on the outer side of the piston rod, and then the piston rod with the first rubber sealing ring is inserted into the composite material winding shell as an exhaust hole and a water inlet hole for water pressure test.

[0017] (4) the front cover is arranged, the front cover can be used as a supporting part of the piston rod during the test, the piston rod is prevented from flying, and the use safety of the piston rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 it is water pressure tool schematic view of the utility model;

[0019] Figure 2 it is water pressure tool schematic view of the utility model without screw structure;

[0020] Figure 3 it is composite material winding shell and front cover side view structure schematic view of the utility model;

[0021] Figure 4 it is composite material winding shell and plug local main section structure schematic view of the utility model;

[0022] Figure 5 it is water pressure tool three-dimensional schematic view of the utility model;

[0023] Figure 6 it is water pressure tool three-dimensional schematic view of the utility model without screw structure.

[0024] In the drawing: 1, composite material winding shell; 2, rubber inner thermal insulation layer; 3, piston rod; 4, first rubber sealing ring; 5, front cover; 6, exhaust hole; 7, water inlet hole; 8, plug; 9, second rubber sealing ring; 10, first nut; 11, screw rod; 12, second nut; 13, rear baffle. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] The utility provides the following technical scheme:

[0027] Embodiment one, to solve the present ignition shell head for large opening, the outer end is a threaded connection mode, and the composite material winding shell 1 is thin, if using end face sealing, not only the sealing effect is bad, but also difficult to disassemble, or lead to the operation is very time-consuming and laborious problem, discloses:

[0028] The composite material winding shell 1 and the rubber inner thermal insulation layer 2, wherein the rubber inner thermal insulation layer 2 is attached to the inner side wall of the composite material winding shell 1, and the right end of the composite material winding shell 1 and the rubber inner thermal insulation layer 2 is arc-shaped; The right side of the composite material winding shell 1 is provided with a plug 8, and the right end of the plug 8 extends to the right end outside of the composite material winding shell 1, and the plug 8 is attached to the inner side wall of the composite material winding shell 1.

[0029] The outer side of the plug 8 is provided with a first rubber sealing ring 4, and the outer side of the first rubber sealing ring 4 is connected with a first nut 10, and the first nut 10 is screwed into the right side of the plug 8.

[0030] As shown in Figures 1-6 The plug 8 is loaded into the tail hole from the inside of the shell and extends to the right end outside of the composite material winding shell 1, and then the first rubber sealing ring 4 is placed outside, and then the first nut 10 is screwed on to fix it; The piston rod 3 is loaded with the first rubber sealing ring 4 and inserted into the shell; The front cover 5 is assembled with the composite material winding shell 1 by screwing, without screwing, which can be conveniently and quickly installed, and can be conveniently and quickly disassembled in the later stage, which is more time-saving and labor-saving.

[0031] Embodiment two, different from embodiment one, can improve the sealing property of the composite material winding shell 1, avoid the phenomenon of water and liquid leakage of the composite material winding shell 1 in the experiment, discloses:

[0032] A piston rod 3 is provided inside the left side of the composite material wound shell 1, and an exhaust hole 6 and a water inlet hole 7 are provided on the upper and lower sides of the left end of the piston rod 3, and the exhaust hole 6 and the water inlet hole 7 are symmetrically arranged about the transverse center line of the piston rod 3. A first rubber sealing ring 4 is fitted on the outer side of the piston rod 3, and the outer side of the first rubber sealing ring 4 is fitted and connected to the left inner wall of the composite material wound shell 1. A front baffle 5 is threadedly connected to the outer side of the left end of the composite material wound shell 1, and the diameter of the front baffle 5 is larger than the diameter of the composite material wound shell 1. A rear baffle 13 is provided at the right end of the composite material wound shell 1, and the left end of the rear baffle 13 corresponds to the front baffle 5, and the diameters of the front baffle 5 and the rear baffle 13 are the same. A circle of screws 11 is set in the internal grooves of the front cover 5 and the rear baffle 13, and the circle of screws 11 is set at equal angles, and the two ends of the circle of screws 11 are threaded through and connected with second nuts 12. At the same time, the inner sides of the two circles of second nuts 12 are respectively fitted and connected with the front cover 5 and the rear baffle 13.

[0033] like Figures 1-4 As shown, when used in the experiment, the water inlet pipe of the water pressure test equipment is connected to the water inlet hole 7 of the tooling. After the water overflows from the exhaust hole 6, the exhaust hole 6 is blocked and the water inlet valve is closed to start the pressurization test. During the pressure increase process, the piston rod 3 and the plug 8 will exert force outward due to the internal pressure, and the front cover 5 will support the piston rod 3 to prevent it from retreating, so as to avoid the piston rod 3 from popping out and causing injury due to excessive pressure. At the same time, the first rubber sealing ring 4 arranged on the outside of the piston rod 3 will play a sealing role due to its movement deformation, and the plug 8 will also press the rubber inner insulation layer 2, and play a sealing role with the second rubber sealing ring 9 on the outside, so as to avoid water leakage in the later stage and improve the sealing effect. After reaching the preset pressure and maintaining the pressure, all the pressure must be removed, and then the shell condition and the product are removed for better practicality.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hydrostatic test tool for an ignition shell, comprising a composite material winding shell (1) and a rubber inner thermal insulation layer (2), wherein the rubber inner thermal insulation layer (2) is arranged on the inner side wall of the composite material winding shell (1), and the right end of the composite material winding shell (1) and the rubber inner thermal insulation layer (2) are both arc-shaped. Characterized in that: The right side of the composite material winding shell (1) is internally provided with a plug (8), the right end of the plug (8) extends through to the outside of the right end of the composite material winding shell (1), and the outside of the plug (8) is connected to the inner side wall of the composite material winding shell (1).

2. A hydrostatic testing tool for an ignition housing as defined in claim 1, characterized in that: The outside of the plug (8) is provided with a first rubber sealing ring (4), the outside of the first rubber sealing ring (4) is connected with a first nut (10), and the first nut (10) is threadedly installed in the right side of the plug (8).

3. A hydrostatic testing tool for an ignition housing as defined in claim 1, wherein: The left side of the composite material winding shell (1) is internally provided with a piston rod (3), the left end of the piston rod (3) is provided with an exhaust hole (6) and a water inlet hole (7) on the upper and lower sides, and the exhaust hole (6) and the water inlet hole (7) are symmetrically arranged about the transverse center line of the piston rod (3).

4. A hydrostatic testing tool for an ignition housing as defined in claim 3, wherein: The outside of the piston rod (3) is provided with a first rubber sealing ring (4), and the outside of the first rubber sealing ring (4) is connected to the left inner wall of the composite material winding shell (1).

5. A hydrostatic testing tool for an ignition housing as defined in claim 4, wherein: The left end of the composite material winding shell (1) is externally threadedly connected with a front cover (5), and the diameter of the front cover (5) is greater than the diameter of the composite material winding shell (1).

6. A hydrostatic testing tool for an ignition housing as defined in claim 5, wherein: The right end of the composite material winding shell (1) is provided with a rear baffle (13), the left end of the rear baffle (13) corresponds to the front cover (5), and the diameters of the front cover (5) and the rear baffle (13) are the same.

7. A hydrostatic testing tool for an ignition housing according to claim 6, wherein: The inside of the front cover (5) and the rear baffle (13) is internally provided with a ring of screws (11), the ring of screws (11) is arranged at equal angles, the two ends of the ring of screws (11) are threadedly connected with second nuts (12), and the inside of the two second nuts (12) is respectively connected with the front cover (5) and the rear baffle (13).

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