Detection device for water pressure and water explosion of thin-wall cylindrical part

Abstract

The utility model relates to the technical field of thin-wall part processing, and particularly discloses a detection device for water pressure and water explosion of a thin-wall cylindrical part. The detection device comprises a front plug, a gland, a rear plug, an O-shaped ring and an elastic check ring. The special sealing device is designed and manufactured aiming at the problem of sealing failure caused by pressure-bearing deformation of thin-wall parts, so that the sealing device is connected to the barrel, the inner wall of the barrel is sealed by the sealing part, and the outer wall of the barrel is protected, so that the sealing failure caused by deformation of the barrel after pressure bearing is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thin-walled parts processing, and particularly discloses a detection device for water pressure and water explosion of thin-walled cylindrical parts. Background Art

[0002] Ammunition combustion chambers are generally thin-walled cylindrical parts, such as Figure 1 As shown in the figure, an ammunition combustion chamber has an overall length L of 800 mm, an outer diameter φ of 70 mm, a wall thickness t1 of 1.5 mm in the middle, and a wall thickness t2 of 1.1 mm at both ends of the threaded stop. To test its pressure-bearing strength and tightness, a hydraulic pressure and water burst test is required. The commonly used sealing device is to tighten the two ends and perform the test based on the end face seal.

[0003] Commonly used water pressure and water explosion detection device structures are as follows: Figure 2 As shown, it includes a front head 1, a seal 2, and a rear head. This equipment works by placing seals such as cowhide or ethylene at both ends of the part and applying pressure to squeeze and deform them to achieve a sealing effect. However, the threaded ends of some ammunition combustion chambers are too thin, resulting in small stress-bearing surfaces at both ends, which can easily form "knife edges" and damage the seals. Furthermore, due to the thin overall wall thickness, when pressure is applied to both ends, the cylinder is easily deformed due to pressure, resulting in seal failure, which does not meet testing requirements.

[0004] Therefore, it is urgent to develop a detection device for water pressure and water explosion of thin-walled cylindrical parts to solve the above technical problems. Utility Model Content

[0005] In order to solve the shortcomings of the existing technology, the utility model provides a detection device for water pressure and water explosion of thin-walled cylindrical parts. Aiming at the problem of sealing failure of thin-walled parts due to pressure deformation, a special sealing device is designed and manufactured. The sealing device is connected to the cylinder and uses the sealing member to seal the inner wall of the cylinder, while protecting the outer wall of the cylinder, thereby preventing sealing failure caused by deformation of the cylinder after being under pressure.

[0006] The utility model is achieved through the following technical solutions:

[0007] The utility model provides a detection device for water pressure explosion of thin-walled cylindrical parts, comprising a front plug 4, a gland 5, a rear plug 6, an O-ring 7 and an elastic retaining ring 8;

[0008] The detection device is mounted on the barrel-shaped member;

[0009] The front plug 4 is a stepped cylinder with a through hole in the middle;

[0010] The gland 5 is a hollow, single-sided semi-cylindrical shell, comprising an annular bottom and sidewall on one side, and an opening at the other end;

[0011] The rear plug 6 is a stepped cylinder;

[0012] The gland 5 is provided with two, respectively connected to the front plug 4 and the rear plug 6; the front plug 4 and the rear plug 6 are both connected in a manner that one end of the small-end cylinder passes through the annular bottom of the gland 5, and one end of the large-end cylinder of the front plug 4 is clamped in the gland 5 tube;

[0013] The front plug 4 and the rear plug 6 have at least three steps, and at least two cylindrical parts located on both sides of the annular bottom of the gland 5 are provided with an annular groove.

[0014] The O-ring 7 is installed in the annular groove on the inner side of the bottom of the annular cylinder of the gland 5 of the front plug 4 and the rear plug 6, and is connected to the inner side of the side wall of the gland 5;

[0015] The elastic retaining ring 8 is installed in the annular groove outside the annular bottom of the gland 5 of the front plug 4 and the rear plug 6 and is connected to the annular bottom of the gland 5.

[0016] Preferably, the O-ring 7 and the elastic retaining ring 8 are made of rubber.

[0017] Preferably, the front plug 4, the pressure cover 5 and the rear plug 6 are made of metal materials.

[0018] Preferably, the front plug 4 is a four-step cylindrical body, and the smallest fourth-step cylindrical head is conical.

[0019] Preferably, the rear plug 6 is a three-stepped cylindrical body.

[0020] Preferably, the outer sides of the large end cylinders of the front plug 4 and the rear plug 6 are provided with threads, which are threadedly connected to the thin-walled cylindrical part.

[0021] Preferably, external joints and wrench platforms are provided on the outside of the small end cylinders of the front plug 4 and the rear plug 6 to facilitate disassembly.

[0022] Preferably, the front plug 4 is connected to the pressure test pump through a high-pressure pipe.

[0023] Preferably, the small end cylinder of the rear plug 6 is provided with a screw thread and is connected to the support frame through the screw thread.

[0024] Preferably, a tripod slot is provided below the pressure cover 5 to securely connect the device.

[0025] The beneficial effects of the present invention are as follows:

[0026] Compared with the water pressure device in the prior art, the utility model makes the two end faces of the part free from stress and protects the thin-walled parts that are easily deformed, effectively reducing the deformation of the shell and improving the detection efficiency. The device has a simple structure and is suitable for general thin-walled cylindrical parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the ammunition combustion chamber structure;

[0028] Figure 2 It is a schematic diagram of a water pressure detection device in the prior art;

[0029] Figure 3 This is a schematic structural diagram of the detection device for water pressure and water explosion in Example 1;

[0030] Figure 4 Schematic diagram of the front plug structure of the water pressure and water explosion detection device in Example 1. DETAILED DESCRIPTION

[0031] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the following is a further description with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are only used to illustrate the technical effects of the present invention and are not intended to limit the scope of protection of the present invention.

[0032] Example 1

[0033] like Figures 3-4 As shown, a detection device for water pressure explosion of thin-walled cylindrical parts includes a front plug 4, a gland 5, a rear plug 6, an O-ring 7 and an elastic retaining ring 8;

[0034] The detection device is mounted on the barrel-shaped member;

[0035] The front plug 4 is a stepped cylinder with a through hole in the middle;

[0036] The gland 5 is a hollow, single-sided semi-cylindrical shell, comprising an annular bottom and sidewall on one side, and an opening at the other end;

[0037] The rear plug 6 is a stepped cylinder;

[0038] The gland 5 is provided with two, respectively connected to the front plug 4 and the rear plug 6; the front plug 4 and the rear plug 6 are both connected in a manner that one end of the small-end cylinder passes through the annular bottom of the gland 5, and one end of the large-end cylinder of the front plug 4 is clamped in the gland 5 tube;

[0039] The front plug 4 and the rear plug 6 have at least three steps, and at least two cylindrical parts located on both sides of the annular bottom of the gland 5 are provided with an annular groove.

[0040] The O-ring 7 is installed in the annular groove on the inner side of the bottom of the annular cylinder of the gland 5 of the front plug 4 and the rear plug 6, and is connected to the inner side of the side wall of the gland 5;

[0041] The elastic retaining ring 8 is installed in the annular groove outside the annular bottom of the gland 5 of the front plug 4 and the rear plug 6 and is connected to the annular bottom of the gland 5.

[0042] The front plug 4 is a four-step stepped cylinder, and the smallest fourth-step cylindrical head is conical. The rear plug 6 is a three-step stepped cylinder. The outer side of the large-end cylinder of the front plug 4 and the rear plug 6 is provided with a thread, which is threadedly connected to the thin-walled cylindrical part. The outer side of the small-end cylinder of the front plug 4 and the rear plug 6 is provided with an external joint and a wrench platform for easy disassembly. The front plug 4 is connected to the pressure test pump through a high-pressure pipe. The small-end cylinder of the rear plug 6 is provided with a screw thread, which is connected to the support frame through a screw thread.

[0043] A tripod slot is provided below the pressure cover 5 to securely connect the device.

[0044] The O-ring 7 and the elastic retaining ring 8 are made of rubber. The front plug 4, the gland 5 and the rear plug 6 are made of metal.

[0045] When using this hydraulic device, first place the O-ring 7 in the sealing grooves of the front and rear plugs, then secure the gland 5 to the plugs using circlips. The rear plug 6 and gland 5 are threadedly connected to one end of the part, with the O-ring 7 used to seal the inner wall. After a certain amount of water is injected into the part, the front plug 4 and gland 5 are threadedly connected to the other end of the part, also using the O-ring 7 to seal the inner wall. The pressure test pump is connected to the front plug 4 via a high-pressure pipe, and after placing it in a safe area, the pressure is applied and maintained to test the pressure. After the test is completed, the front plug 4 is removed first, the water is drained, and finally the rear plug 6 is removed.

Claims

1. A detection device for hydraulic explosion of thin-walled cylindrical parts, characterized in that: It comprises a front plug (4), a gland (5), a rear plug (6), an O-ring (7) and an elastic retaining ring (8); The detection device is mounted on the barrel-shaped member; The front plug (4) is a stepped cylinder with a through hole in the middle; The gland (5) is a hollow single-sided semi-cylindrical shell, comprising an annular bottom and a side wall on one side, and an opening at the other end; The rear plug (6) is a stepped cylinder; The gland (5) is provided with two, which are respectively connected to the front plug (4) and the rear plug (6); the front plug (4) and the rear plug (6) are both connected in a manner that one end of the small-headed cylinder passes through the annular bottom of the gland (5), and one end of the large-headed cylinder of the front plug (4) is clamped in the gland (5) tube; The front plug (4) and the rear plug (6) have at least three steps, and at least two cylindrical parts located on both sides of the annular bottom of the gland (5) are provided with annular grooves. The O-ring (7) is installed in the annular groove on the inner side of the bottom of the annular cylinder of the gland (5) of the front plug (4) and the rear plug (6), and is connected to the inner side of the cylinder side wall of the gland (5); The elastic retaining ring (8) is installed in the annular groove outside the annular bottom of the gland (5) of the front plug (4) and the rear plug (6) and is connected to the annular bottom of the gland (5).

2. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The O-ring (7) and the elastic retaining ring (8) are made of rubber.

3. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The front plug (4), the pressure cover (5) and the rear plug (6) are made of metal materials.

4. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The front plug (4) is a four-step cylindrical body, and the smallest fourth-step cylindrical head is conical.

5. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The rear plug (6) is a three-step stepped cylinder.

6. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The outer sides of the large end cylindrical bodies of the front plug (4) and the rear plug (6) are provided with threads, which are threadedly connected to the thin-walled cylindrical part.

7. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: External joints and wrench platforms are provided on the outsides of the small end cylinders of the front plug (4) and the rear plug (6), which facilitate disassembly.

8. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The front plug (4) is connected to the pressure test pump via a high-pressure pipe.

9. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: The small end cylindrical body of the rear plug (6) is provided with a screw thread and is connected to the support frame through the screw thread.

10. The detection device for hydraulic explosion of thin-walled cylindrical parts according to claim 1, characterized in that: A tripod slot is provided below the pressure cover (5) to securely connect the device.

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