CN201653684U - Sealing and Fastening Structure of Pressure Test Cylinder - Google Patents

Abstract

The utility model discloses a sealing and fastening structure of a pressure test cylinder, which comprises an upper flange, a lower flange, a clip and a collar, the upper flange and the lower flange abut against each other up and down, and the upper flange and the lower flange The outer sides are respectively provided with clamping teeth, and the clamps are ring-shaped, and are composed of two or more arc-shaped sub-clamps which are evenly distributed in the circumferential direction. The teeth of the upper flange and the lower flange are meshed, the collar fits the clamp, and a sealing ring is arranged between the upper flange and the lower flange. The utility model has a simple structure and is convenient for loading and unloading. The cylinder cap of the pressure test cylinder is installed through the fastening connection between the clamp, the upper flange and the lower flange, which can greatly reduce the size of the flange section of the pressure test device, so that it can Increase the size of the working section of the pressure test device under the existing processing conditions.

Description

Sealing and Fastening Structure of Pressure Test Cylinder

technical field

The utility model relates to a sealing and fastening structure, in particular to a sealing and fastening structure of a pressure test cylinder.

Background technique

In order to facilitate the installation of the test piece, the pressure test cylinder needs to be equipped with a full-scale large opening. The sealing and fastening of the opening is generally in the form of a flange. The sides of the upper and lower flanges are straight, and there is no mutual contact with the clamp. The fastening of the pressure test device is only realized through the upper and lower contact surfaces, so the stress level of the structure is high when the pressure test device is working, and it is inconvenient to disassemble and assemble. For pressure test devices with large working pressure and test scale, if this scheme continues to be adopted, a series of difficulties will arise: in order to reduce the stress level at the flange, large-scale integral forgings must be used, and the cost of large-scale integral forgings is high, and there are technical problems Risk: The friction force at the upper and lower contact surfaces is huge, and a large hydraulic mechanism is required to complete the opening and closing of the pressure test device.

Contents of the invention

The utility model aims at the above-mentioned shortcomings of the prior art, and provides a sealing and fastening structure of a pressure test cylinder, which has the characteristics of small flange section and easy installation and disassembly.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

The utility model comprises an upper flange, a lower flange, an annular clamp and a collar, the upper flange and the lower flange abut against each other up and down, the outer sides of the upper flange and the lower flange are respectively provided with clamping teeth, and the clamp consists of two pieces or The arc-shaped sub-clamps evenly distributed in the circumferential direction are formed by abutting against each other. Two sets of clamping teeth are arranged inside the clamping clamps. The two sets of clamping teeth are respectively meshed with the clamping teeth of the upper flange and the lower flange, and the collar fits the clamps; A sealing ring is set between the upper flange and the lower flange

The technical effect of the utility model is:

1. The size of the flange section of the pressure test device can be greatly reduced, thereby increasing the size of the working section of the pressure test device under the existing processing conditions.

2. The friction between the flange and the hoop is small, which is convenient for assembly and disassembly.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the structure of the utility model.

Detailed ways

As shown in Fig. 1, the utility model includes an upper flange 3 and a lower flange 7 respectively provided with locking teeth 2 on the outside, and a sealing ring 6 is arranged between the upper flange 3 and the lower flange 7. The hoop 4 is ring-shaped, and is composed of two or more arc-shaped sub-hoops (not shown in the figure) uniformly distributed in the circumferential direction, which are abutted against each other and are easy to disassemble. Two groups of locking teeth 1 matched with the locking teeth 2 of the lower flange 7, the locking teeth 1 mesh with the locking teeth 2 to realize the fast connection among the clamp 4, the upper flange 3 and the lower flange 7.

When the utility model is used, the lower flange 7 is welded with the pressure test cylinder (not shown in the figure), the upper flange 3 is connected with the cylinder cap (not drawn in the figure), and the cylinder cap passes through the clamp 4 and the upper flange 3. The lower flange 7 is tightly connected to each other and installed on the pressure test cylinder. The sealing ring 6 can ensure the reliable sealing of the cylinder and the cylinder cap. The collar 5 is fitted on the outside of the clamp 4 to ensure Fasten securely.

Claims (2)

1. The sealing and fastening structure of the pressure test cylinder, including the upper flange (3), the lower flange (7), the ring clamp (4) and the collar (5), the upper flange (3) and the lower flange (7) Up and down abutment, characterized in that the outer sides of the upper flange (3) and the lower flange (7) are respectively provided with clamping teeth (2), and the clamp (4) is divided into two or more circular arc-shaped clamps uniformly distributed in the circumferential direction The hoops are abutted against each other, and two groups of teeth (1) are arranged inside the hoop (4), and the two groups of teeth (1) are connected with the teeth (2) of the upper flange (3) and the lower flange (7) respectively. Engage, and the collar (5) fits over the clamp (4). 2. The sealing and fastening structure of the pressure test cylinder according to claim 1, characterized in that a sealing ring (6) is arranged between the upper flange (3) and the lower flange (7).

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