CN2268827Y - Pipeline extension device - Google Patents

Abstract

The utility model discloses a pipeline expansion device, belonging to the technical field of pipeline devices. The pipeline extension device is composed of a flange, an expansion pipe, a screw bolt, a press cover, a packing box, and an outer sleeve pipe. The outer sleeve pipe 7 is provided with the packing box 5; the packing box 5 is connected with the press cover 4 via the screw bolt 3, and a sealing ring 6 is arranged between the packing box 5 and the press cover 4; the chrome plated expansion pipe 2 is connected with the packing box 5 and the press cover 4 in an inserting way. The utility model is suitable for the fields of heating power, coal gas, petroleum, chemical industry, etc.

Description

Pipeline extension device

The utility model belongs to the piping facility technical field, is a kind of pipeline extension device.

General pipeline extension device adopts asbestos packing and stone mill to do stuffing box packing, and packing seal in use is bad, causes seepage, and field maintenance is also very difficult.Expansion bend adopts does not have treated metallic material, corrosion easily.

The purpose of this utility model provides a kind of good sealing effect, the life-span is long, compensation effect is good pipeline compensator.

The purpose of this utility model is achieved in that it is made up of flange, telescopic pipe, bolt, gland, stuffing box, outer sleeve, flange plate, outer sleeve weld filler letter, stuffing box is connected with gland, and seal ring is arranged therebetween, and chromium plating telescopic pipe and stuffing box, gland are pegged graft.

The utility model has the advantages that, owing to adopt straight-through structure, non-resistance when medium passes through expansion bend, energy saving, dirt can not precipitate, non-obstruction phenomenon, have multiple Placement to select for the user, compensation ability is big, ne-leakage, can directly bury underground, floor space is little, saves engineering cost in a large number, adopt the chromium plating telescopic pipe not perishable, the life-span is long, adopts the hydraulic cylinder sealing structure, guarantee the reliability of sealing, do not need frequent replacing.The utility model be applicable to heating power heating, coal gas, oil, chemical industry, etc. the field.

The utility model is described in further detail below in conjunction with accompanying drawing.

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

Fig. 2 is second kind of structural representation of the present utility model.

Fig. 3 is the third structural representation of the present utility model.

Fig. 4 is the 4th a kind of structural representation of the present utility model.

Number in the figure is described as follows:

1, flange plate, 2, telescopic pipe, 3, bolt, 4, gland, 5, stuffing box, 6, seal ring, 7, outer sleeve, 8, bolt, 9, packing ring, 10, abutted flange.11, reducer pipe.

As shown in the figure, outer sleeve 7 has stuffing box 5, and stuffing box 5 is connected with gland 4 usefulness bolts 3, and seal ring 6 is arranged therebetween, and chromium plating telescopic pipe 2 is pegged graft with stuffing box 5, gland 4.

Embodiment 1, as shown in Figure 1, and (A type, the two ends flange-type) outer sleeve 7 one end weld filler letters 5, the other end is a flange plate, stuffing box 5 is connected with gland 4 usefulness bolts 3, seal ring 6 is arranged therebetween, and chromium plating telescopic pipe 2 is pegged graft with stuffing box 5, gland 4, and the other end of chromium plating telescopic pipe 2 has flange plate 1.This structure can directly be connected on the pipeline with flange.

Embodiment 2, as shown in Figure 2, (Type B, the two ends welding is compensation) outer sleeve 7 two ends weld filler letters 5, stuffing box 5 is connected with gland 4 usefulness bolts 3, and seal ring 6 is arranged therebetween, and the outer sleeve 7 between the stuffing box 5 has abutted flange 10, connect with bolt 8, chromium plating telescopic pipe 2 is pegged graft with stuffing box 5, gland 4.This structure has two stuffing boxes can bidirectional compensating, and compensation rate doubles, and adopts abutted flange to connect between the outer sleeve, can disassembled and assembled freely, and easy to maintenance.

Embodiment 3, as shown in Figure 3, (Type B, two ends welding type) outer sleeve 7 one end weld filler letters 5, stuffing box 5 is connected with gland 4 usefulness bolts 3, and seal ring 6 is arranged therebetween, and chromium plating telescopic pipe 2 is pegged graft with stuffing box 5, gland 4, outer sleeve the other end welding reducer pipe 11.This structure can directly be welded on the pipeline, and telescopic pipe adopts can not drawer structure, provides more reliable safety assurance for pipeline is in operation.

Embodiment 4, and as shown in Figure 4, (C type, threaded one end one end is direct insertion) outer sleeve 7 one ends have stuffing box 5, and stuffing box 5 is threaded with gland 4, and seal ring 6 is arranged therebetween, and chromium plating telescopic pipe 2 is pegged graft with stuffing box 5, gland 4.

During the pipe laying expansion bend, should be strict must not install deflection, otherwise when pipeline moves, the expansion bend shell may take place and telescopic pipe is bitten, easily produce leakage phenomenon along pipeline center.During the pipe laying expansion bend, the direction of arrow on the expansion bend aligns the media flow direction.The pipe laying expansion bend must be provided with fixed support and guiding trestle, pipeline is in operation is unlikely to disalignment, can freely stretch to guarantee expansion bend.

Claims (5)

1, a kind of pipeline extension device, it is made up of flange plate, telescopic pipe, bolt, gland, stuffing box, outer sleeve, it is characterized in that, outer sleeve 7 one end weld filler letters 5, stuffing box 5 is connected with gland 4 usefulness bolts 3, and seal ring 6 is arranged therebetween, and chromium plating telescopic pipe 2 is pegged graft with stuffing box 5, gland 4.

2, a kind of pipeline extension device according to claim 1 is characterized in that, outer sleeve 7 and telescopic pipe 2 one ends have flange plate.

3, a kind of pipeline extension device according to claim 1 is characterized in that, the outer sleeve 7 between the stuffing box has pair sending and receiving orchid 10, connects with bolt 8.

4, a kind of pipeline extension device according to claim 1 is characterized in that, outer sleeve 7 the other ends welding reducer pipe 11.

5, a kind of pipeline extension device according to claim 1 is characterized in that, stuffing box 5 is threaded with gland 4.

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