CN2628843Y

CN2628843Y - Pipe fast expansion plug

Info

Publication number: CN2628843Y
Application number: CN 03263786
Authority: CN
Inventors: 李奎民
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-27
Filing date: 2003-05-27
Publication date: 2004-07-28
Anticipated expiration: 2013-05-27

Abstract

The utility model relates to a pressure container or pipeline bulge test special tool, particularly a pipeline fast expansion plug which comprises a pedestal, a gland, a feed screw, a lock nut, etc., wherein the lower end of the feed screw is fixed to the center of the pedestal, and an expansion rubber sleeve and the gland of the expansion rubber sleeve are sleeved on the lower end of the feed screw. The lock nut of the gland is arranged on the feed screw. The utility model has the advantages of reasonable physical design and convenient operation. Man-hour and materials can be economized when the utility model is applied to the bulge tests of a pressure container or a pipeline, particularly an oil pipeline and a liquefied gas pipeline where open flame is forbided at the time of construction. At the same time, the operating safety of the bulge test is increased.

Description

The pipeline rapid expanding is stifled

Technical field:

The utility model relates to pressurized container or pipeline bulge test special tool, and particularly a kind of pipeline rapid expanding is stifled.

Background technique:

In water supply pipe, petroleum pipeline, liquefied gas pipeline work progress, especially in the pressure test of pressurized container, after at first each mouth of pipe weldering being blocked up, carry out bulge test more at present, test finishes and blocks the stifled mouth of pipe of this weldering again.Both time-consuming, wasted material again.

Summary of the invention:

Goal of the invention of the present utility model is to change traditional bulge test mouth of pipe weldering blocking method, and a kind of easy accessibility and repeatedly used section stifled instrument are provided---and the pipeline rapid expanding is stifled.

The technological scheme that realizes the foregoing invention purpose is: this pipeline rapid expanding blocking package is drawn together parts such as base, gland, leading screw, locknut, this leading screw lower end and base center fixation, the gland of suit expansion gum cover and this expansion gum cover on it is equipped with the locknut of this gland on leading screw.

Stifled according to the pipeline rapid expanding that technique scheme is implemented, before pressurized container or pipeline are carried out bulge test, can be directly with the stifled whole mouth of pipe that needs shutoff that inserts of this expansion, screwing locknut makes gland pressurize to the expansion gum cover, be positioned at this radially chap of expansion gum cover between gland and base, make it and mouth of pipe inwall interference fit, can realize the shutoff of this mouth of pipe; And then carry out bulge test; Unclamp locknut after finishing again, the expansion gum cover is restored to the original state, the stifled integral body of this expansion is taken off.The utlity model has reasonable in design, easy to operate advantage, be applied to bulge tests such as the petroleum pipeline of pressurized container or pipeline, particularly no open flames construction and liquefied gas pipeline, promptly save economical with materials again in man-hour, also improved the Security of bulge test work simultaneously.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 has the structural representation of the present utility model of suppressing joint.

Embodiment:

Provide a specific embodiment of the present utility model below in conjunction with accompanying drawing.The pipeline rapid expanding that Fig. 1 provides is stifled to be made up of base 1, leading screw 2, expansion gum cover 3, gland 4, packing ring 5, locknut 6, these leading screw 2 lower ends and base 1 center fixation, the gland 4 of suit expansion gum cover 3 and this expansion gum cover 3 on it is equipped with the locknut 6 of this gland 4 on leading screw 2.The stifled mouth of pipe plugging action that only rises of this structure pipeline rapid expanding.Stifled its leading screw 2 centers of the pipeline rapid expanding that Fig. 2 provides have along its axial pressurizing port 7, and this pressurizing port 7 runs through base 1 center, and leading screw 2 upper ends are equipped with and are suppressed joint 8.This structure pipeline rapid expanding is stifled not only to play mouth of pipe plugging action, but also can directly suppress by it, the suitable especially pressurized container that has only a mouth of pipe.When the pipeline of the pressurized container of two or more mouths of pipe, particularly both ends open carried out bulge test, stifled being used of the pipeline rapid expanding of the described structure of Fig. 1 Fig. 2 can be convenient.

Claims

1, a kind of pipeline rapid expanding is stifled, comprises base, gland, leading screw, locknut, it is characterized in that leading screw lower end and base center fixation, and the gland of suit expansion gum cover and this expansion gum cover on it is equipped with the locknut of this gland on leading screw.

2, pipeline rapid expanding according to claim 1 is stifled, it is characterized in that the leading screw center has along its axial pressurizing port, and this pressurizing port runs through the base center, and the leading screw upper end is equipped with and is suppressed joint.