CN204986205U - Oil gas pipeline leather cup screw sealing washer device - Google Patents

Abstract

The utility model discloses a sealing ring device for a leather cup screw hole of an oil and gas pipeline, which comprises a sealing cup and a sealing head; wherein a screw hole is arranged on the sealing surface of the sealing cup, and a screw hole is arranged on the outer end surface of the screw hole. A raised O-ring; the plugging head includes a front pressure plate, a rear pressure plate, bolts and nuts, and the bolts fix the sealing cup between the front pressure plate and the rear pressure plate through the nuts. The oil and gas pipeline leather cup screw hole sealing ring device described in the utility model solves the problem of oil and gas micro-leakage at the bolt part after the sealing cup enters the pipeline, improves the sealing effect of the pipeline, and adopts this device to greatly shorten the construction on the construction site time and improve work efficiency.

Description

Oil and gas pipeline leather cup screw hole sealing ring device

technical field

The utility model relates to a sealing device for oil and gas pipelines, in particular to a sealing ring device for oil and gas pipeline cup screw holes.

Background technique

With the continuous development of cities, the demand for oil and gas continues to increase. At present, the petrochemical industry usually uses pipelines to transport oil, natural gas, liquefied petroleum gas and other fuels. The transmission pipeline is under high pressure for a long time, and oil, natural gas, etc. corrode the pipeline, which is prone to leakage. Once a leak occurs, it needs to be repaired in time, and the pipeline needs to be blocked during the repair. However, the plugging cup currently used is to pass through the rear pressure plate and rubber cup of the plugging head through high-strength bolts, fix it on the front pressure plate of the plugging head, and place it in a sealed state through the plugging device. In the pipeline, when the cup is completely perpendicular to the inner wall of the pipe, after the pressure of the blocked pipe section is discharged, the single pressure of the medium in the pipeline on the cup is formed, and the lip of the cup can be expanded to reach the sealing point of the pipe. Purpose. But this plugging device always has certain microleakage phenomenon, especially the plugging of gas pipeline. After testing, it is found that the microleakage is not at the lip of the cup, but at the bolt part of the tension bolt. How to solve the leak between the screw rod and the screw hole of the cup is a big problem that needs to be solved urgently.

Utility model content

The technical problem to be solved by the utility model is to provide an oil and gas pipeline cup screw hole sealing ring device, which can solve the micro-leakage phenomenon in the screw hole and the bolt fixing place, and improve the sealing effect of the pipeline.

In order to solve the above problems, the utility model adopts the following technical solutions: a screw hole sealing ring device for oil and gas pipeline cups, including a plugging cup and a plugging head; wherein the sealing surface of the plugging cup is provided with screw holes, The upper end surface of the screw hole is provided with a raised O-ring; the plugging head includes a front pressure plate, a rear pressure plate, bolts and nuts, and the bolts fix the sealing cup between the front pressure plate and the rear pressure plate through the nuts.

The implementation of the technical solution of the utility model has the following beneficial effects: the oil and gas pipeline cup screw hole sealing ring device described in the utility model solves the problem of oil and gas leakage at the bolt part after the plug cup enters the pipeline, and improves the sealing of the pipeline. Effect, and the use of this device greatly overcomes the defect of lax plugging and improves work efficiency.

Description of drawings

Below in conjunction with accompanying drawing, the embodiment of the present utility model is further described:

Figure 1 is a schematic diagram of the structure of the plugging head.

Fig. 2 is a schematic diagram of the structure of the plugging cup.

1-front pressure plate; 2-plugging cup; 3-rear pressure plate; 4-bolt; 5-nut; 6-screw hole; 7-O-ring.

detailed description

Below according to accompanying drawing 1 and 2 and in conjunction with embodiment, the utility model is further described.

As shown in Figure 1, the utility model provides an oil and gas pipeline cup screw hole sealing ring device, including a plugging cup 2 and a plugging head; wherein the sealing surface of the plugging cup 2 is provided with a screw hole 6, and The outer end surface of the screw hole 6 is provided with a raised O-ring 7; the plugging head includes a front pressure plate 1, a rear pressure plate 3, a bolt 4, and a nut 5, and the bolt 4 fixes the sealing cup 2 on the Between the front platen 1 and the rear platen 3.

When the existing plugging cup 2 is sent into the oil and gas transmission pipeline through the plugging head, the raised O-ring 7 will be compacted after the cup is subjected to the high pressure of oil and gas, so as to realize the sealing effect of the screw hole 6 .

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, any person familiar with the technology can easily think of it within the technical scope disclosed in the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (1)

1. The oil and gas pipeline cup screw hole seal ring device is characterized in that: it includes a plugging cup (2) and a plugging head; wherein the sealing surface of the plugging cup (2) is provided with a screw hole (6). The outer end surface of the screw hole (6) is provided with a raised O-ring (7); the plugging head includes a front pressure plate (1), a rear pressure plate (3), bolts (4), nuts (5), bolts (4) Fix the sealing cup (2) between the front pressure plate (1) and the rear pressure plate (3) through the nut (5).