CN202274222U

CN202274222U - Pipeline connecting device for large-expansion-amount pipelines

Info

Publication number: CN202274222U
Application number: CN2011203806064U
Authority: CN
Inventors: 田建胜
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2011-10-10
Filing date: 2011-10-10
Publication date: 2012-06-13
Anticipated expiration: 2021-10-10

Abstract

The utility model discloses a pipeline connecting device for large-expansion-amount pipelines. The pipeline connecting device comprises an outer sleeve, wherein the two ends of the outer sleeve are respectively provided with a flange plate, the two ends of the outer sleeve are respectively internally provided with an inner sleeve with a ledge, a gland which is in screw joint with the flange plate at the end part of the outer sleeve is sleeved on each inner sleeve, an annular cylindrical rubber sealing ring is arranged between the ledge and gland of each inner sleeve, and an annular sealing gasket is arranged between each gland and each flange plate of the outer sleeve. The pipeline connecting device disclosed by the utility model is simple in structure and convenient to install, and can be used for greatly improving the expansion amount of a pipeline, improving the extremely-severe environment adaptability of the pipeline, and reducing the possibility that the pipeline is damaged due to environmental changes, thereby greatly improving the service life of the pipeline and ensuring the normal production. The pipeline connecting device can be widely applied to the pipeline installation of foundation engineering such as construction, chemical engineering, water supply, water drainage, oil, water heating and the like, especially the pipeline installation of mine vertical-shafts which have relatively severe application environments and higher requirements on the expansion amounts of pipelines.

Description

The assembling pipe joint of big extending amount pipeline

Technical field

The utility model relates to a kind of assembling pipe joint of big extending amount pipeline; Be particularly useful for environment relatively abominable, the pipeline of the bigger mine vertical shaft pit shaft of pipeline extending amount requirement is installed, the pipeline that also can be widely used in foundation engineerings such as building, chemical industry, feedwater, draining, oil, hot-water heating is installed.

Background technique

Various pipelines all can the phenomenon of expanding with heat and contract with cold occur with the variation of ambient temperature; When especially pipeline is longer; The extending amount of accumulative total is just bigger; Therefore when pipeline laying, must on pipeline, keep at a certain distance away and just install the pipeline expansion device additional, reason is not expanded with heat and contract with cold and is destroyed when guaranteeing that pipeline receives influence of temperature change.Especially in the mine vertical shaft pit shaft, need to lay various pipelines such as pressure ventilation pipe, waste pipe and water pipe usually; These pipelines are except being shown by variation of ambient temperature to expand with heat and contract with cold phenomenon; Another key factor that influences pipeline safety is exactly the line rupture protection valve that the wellbore formation sedimentation causes; And under the mine condition, the line rupture protection valve that stratum settlement causes is the most serious often, therefore; The requirement that under the vertical condition pipeline is adapted to the variation of borehole wall stratum settlement promptly requires pipeline that bigger flexible ability is arranged also than higher.At present the situation of pipeline stretchability connection set commonly used with on-the-spot requirement is: 1) the structure more complicated of the flexible connector of existing pipeline, and processing and fabricating is consuming time, take a lot of work, and is uneconomical; 2) extending amount is less, generally is no more than 160mm.

Pipeline connector in the market satisfies the installation and the user demand of normal conditions lower pipeline basically, but for the pipeline that has in the possible bore environment of sedimentation, after pipeline is installed and used 2～3 years; Because the influence of underground mining; Borehole wall stratum tends to occur the sedimentation and deformation than large scale, if with traditional pipeline expansion device, not only a fairly large number of expansion bend need be installed this moment; And the difficulty and the cost of pipeline later stage working service have been increased; Otherwise, pipeline will be because of the sedimentation on borehole wall stratum crooked even cracking, destroy, can't normally use; And when getting into the above degree of depth of 1000m along with pit mining, this problem is also more and more outstanding.Therefore; Develop the flexible connection set of novel pipeline; Change existing pipeline connecting device complex structure, processing and fabricating take a lot of work, time-consuming, consumption of materials is big, extending amount is little, can't satisfy deep shaft of vertical well pipeline install big because of the stratum settlement amount, to the demanding present situation of pipeline stretchability; The needs that be not only and guarantee mine normal production, improve the mine economic benefit also are to set up conservation-minded society and the inevitable requirement that promotes scientific and technological progress.

Summary of the invention

The purpose of the utility model is the deficiency that overcomes in the prior art, provide a kind of simple in structure, processing and fabricating convenient, be convenient to safeguard, applicability is strong, and the assembling pipe joint of big extending amount pipeline can be provided as required.

To achieve these goals; The assembling pipe joint of the big extending amount pipeline of the utility model; Comprise that two ends all have the outer sleeve of flange plate, be respectively equipped with the inner sleeve of band shoulder in the two ends of outer sleeve, be set with the gland that connects with outer sleeve end flange valve snail line on the inner sleeve; Be provided with ring-type cylinder type rubber seal between the shoulder of inner sleeve and the gland, be provided with the ring packing pad between gland and the outer sleeve flange plate.

The shoulder external diameter of said inner sleeve and the internal diameter of outer sleeve are for movingly; The external diameter of said inner sleeve and the aperture of gland are for movingly.

Beneficial effect: the utility model can be according to the extending amount processing and fabricating of pipeline character, installation environment and needs, and flexible ability is big, is particluarly suitable for using in the coal mine shaft lining pit shaft pipeline installation environment; With being connected of normal pipeline, both can weld, also can adopt flange to connect, the less pipeline of diameter also can adopt screwed connection.Not only solved little, the complex structure, difficult in maintenance of existing pipeline expansion joint extending amount, and in the problems such as line rupture protection valve of shaft of vertical well owing to the bigger initiation of stratum settlement.And can greatly improve the extending amount of pipeline, thus greatly improve the ability that pipeline adapts to extreme environment, greatly reduce the possibility that causes conduit failure because of environmental change, thereby improve greatly the working life of pipeline, guarantee to produce normal.Can be widely used in building, the pipeline of foundation engineerings such as chemical industry, feedwater, draining, oil, hot-water heating installs, and is especially relatively abominable to Environmental Conditions, require the pipeline of bigger mine vertical shaft pit shaft to install to the pipeline extending amount.Its major advantage has:

1) simple in structure, processing and fabricating is convenient, and materials consumption is few.

2) the pipeline extending amount can be provided with as required, has broken through the requirement that existing pipeline expansion bend extending amount is little, can't satisfy the big extending amount of extreme service condition, and is applied widely.

3) this device is various with the Placement of normal pipeline, but both flange-type connected, and also can weld, or screwed connection; While is applicable to the pipeline of various diameters.

4) use, easy to maintenance, user cost can reduce greatly;

5) can improve working life of pipeline greatly, what help increasing economic efficiency and guaranteeing to produce normally carries out.

Description of drawings

Fig. 1 is the main TV structure schematic representation of the utility model.

Fig. 2 is the plan structure schematic representation of the utility model.

Among the figure: 1-inner sleeve, 2-outer sleeve, 3-flange-type gland, 4-bolt, 5-ring-type cylinder type rubber seal, 6-ring packing pad.

Embodiment

Below in conjunction with accompanying drawing the embodiment of the utility model is done further description:

As shown in Figure 1; The assembling pipe joint of the big extending amount pipeline of the utility model; Mainly constitute by inner sleeve 1, outer sleeve 2 and gland 3; The two ends of outer sleeve 2 all have flange plate, and inner sleeve 1 has shoulder one end to be installed in the endoporus at outer sleeve 2 two ends, and the shoulder external diameter of inner sleeve 1 and the internal diameter of outer sleeve 2 are for movingly.Be set with gland 3 on the inner sleeve 1, the aperture of the external diameter of inner sleeve 1 and gland 3 is for movingly.Gland 3 and outer sleeve 2 end flange dishes are provided with ring-type cylinder type rubber seal 5 through 4 fastening connections of bolt between the shoulder of inner sleeve 1 and the gland 3, be provided with ring packing pad 6 between gland 3 and outer sleeve 2 flange plate.

Working principle: according to the requirement of pipeline Environmental Conditions to pipeline extending amount size, confirm the length of outer sleeve 2, length is big more, and its extending amount is just big more.Through between inside and outside sleeve pipe, adding ring-type cylinder type rubber seal 5, ring packing pad 6, can reach the liquid of conveying in the prevention pipeline or the purpose of gas leak.When being used for connecting pipeline, the outer end of the inner sleeve 1 at the outer sleeve 2 two ends form through flange, screw thread or welding is connected with pipeline gets final product.

Claims

1. the assembling pipe joint of a big extending amount pipeline; It is characterized in that: it comprises that two ends all have the outer sleeve of flange plate (2); Be respectively equipped with the inner sleeve (1) of band shoulder in the two ends of outer sleeve (2); Be set with the gland (3) that connects with outer sleeve (2) end flange valve snail line on the inner sleeve (1); Be provided with ring-type cylinder type rubber seal (5) between the shoulder of inner sleeve (1) and the gland (3), be provided with ring packing pad (6) between gland (3) and outer sleeve (2) flange plate.

2. the assembling pipe joint of big extending amount pipeline according to claim 1 is characterized in that: the internal diameter of the shoulder external diameter of said inner sleeve (1) and outer sleeve (2) is for movingly.

3. the assembling pipe joint of big extending amount pipeline according to claim 1 is characterized in that: the aperture of the external diameter of said inner sleeve (1) and gland (3) is for movingly.