CN105605365A - Pipeline leakage point sealing device - Google Patents

Abstract

The invention relates to a pipeline leakage point sealing device which can be used for plugging partial leakage points of a pipeline. The technical scheme is as follows: an upper shell and a lower shell are combined and covered on the outside of a pipeline leakage point, and a sealing gasket is compacted between the shells in a tongue-and-groove mode; the shells and pipeline are annularly provided with a sealing packing; and a regulating shaft is utilized to compact the sealing packing onto the ends of the shells through a stay bar. The pipeline leakage point sealing device has the advantages of simple structure and high practicality. The axial sealing and radial sealing are separated and can be regulated respectively, so that the sealing effect can be ensured more easily; and the compacting force of the filler can be regulated by simply rotating the regulating shaft, so the operation is more convenient.

Description

A kind of pipe leakage dot encapsulation device

Technical field

The present invention relates to a kind of pipe leakage dot encapsulation device.

Background technology

The destruction of pipeline can be divided into three classes substantially: the first kind is local little destruction, as aperture or crackle leakage. This class is let outLeakage is normally caused by local corrosion or weld defect. Equations of The Second Kind is local failure, need to add protective sleeve or use in steel pipe outsideShort tube is replaced destroyed part. This class is destroyed the most common, and for example ship grasp is hung. The 3rd class is to occur on quite long pipeline sectionDestroy on a large scale, cause pipeline axial intensity greatly to reduce. This situation need to be replaced destroyed part by long tube section.

Pipeline is because the local leakage that local corrosion or weld defect cause is the most common failure mode. Conventionally adopt at presentLocal mode of replacing is repaired. Local replacement needs long-time stopping transportation to carry out local replacing, and cost is higher, and needs to useTo welding, therefore need pipeline section cleaning, displacement nitrogen, prevent exploding. Adopt the mode of external reinforcing to remedy to be warp the mostRepairing method fast helps. Following patent has been announced some repairing pipe measures.

Patent CN201320801593.2, the damaged prosthetic device of fluid pressure type oil and gas pipes, adopts the first mending-leakage semicanal and the second mending-leakageSemicanal synthesizes a cylinder, leakage point is covered, and adopt the mode of welding to carry out axial seal.

Patent CN201320890630.1, a kind of pipe leakage dot encapsulation structure, adopts upper box and lower box to merge and is buckled in leakagePart, upper lower box forms a quad seal case, and drain valve connecting pipe are installed on casing.

Patent CN201320890887.7, a kind of annular chuck for repairing pipe, the clip of two semicircular ring of employing, holds tightlyPipeline also connects with bolt. Between clip and pipeline, elastomeric material is set.

Patent CN201420081473.4, a kind of pipe pressurized leakage compensating device, adopts the first slips and the second slips docking composition circleLead to and be enclosed within outside pipeline, between slips and pipeline, liner being set.

Patent CN201420096705.3, Hafu-type pipeline connects repair apparatus, and this patent, for running water pipe, adopts two and halfCircle is held the mode that adds sealing ring tightly and is implemented leakage point sealing.

Patent CN201420335934.6, a kind of pipeline pressure-bearing leakage compensating device, mainly to bands such as city tap-water, heating, blowdownsPressure pipeline carries out mending-leakage. Arc pressuring plate is pressed on pipeline outer wall by U bolt, and by seal with elastometic washer.

Patent CN201420641802.6, a kind of for the online leakage compensating device with pressure of non-combustible gas pipeline, by upper and lower mending-leakageSemi-circular tube connects and holds pipeline tightly with bolt. On mending-leakage semi-circular tube corresponding to leak, drive by-passing valve, in mending-leakage, can beatOpen by-passing valve earial drainage.

Above leakage repairing device for pipe line all adopts two semi-cylindrical shells to hold pipeline tightly substantially, and establishes between pipeline and enclasp devicePut gasket seal. Such mode axial seal is difficult to ensure, and difficult sealing between two semi-cylindrical shells is to realize.Therefore, shutoff way described in above patent, is difficult to tackle pressure piping, and especially pipe-line local leakage is difficult to applicationAbove way realizes shutoff.

In addition, existing pipeline external is strengthened repairing method, conventionally adopts to connect with bolt after housing holding tube or with the side of weldingFormula stationary housing, and adopt housing to add that the mode of encapsulant seals. Upper-lower casing merging once completes between housingRadial seal and housing and pipeline between axial seal. Regulate so comparatively difficulty of pretightning force, be often difficult to ensure simultaneouslyTwo kinds of sealing means are effective.

In sum, for the high-risk pipeline of high pressure, still immature to the external reinforcing repairing method technology and equipment of local leakage point,The innovation of correlation technique and research and development have larger using value.

Summary of the invention

Object of the present invention: existing pipe leakage point is held sealing device axial seal weakness tightly and two housings connect in order to overcomePosition seals not enough shortcoming, and spy provides a kind of pipe leakage dot encapsulation device.

For achieving the above object, the technical scheme that the present invention takes is:

A kind of pipe leakage dot encapsulation device, comprises lower house, upper shell, filler, gasket seal, bolt, gland, adjustingAxle, sleeve, strut, spud pile, flexible strand, is characterized in that:

Upper shell and lower house are the semicylinder of hollow, and upper shell and lower house are bolted, lower house with upper shellConnecting portion arranges the groove that cross section is rectangle, in described rectangular channel, gasket seal is set; Upper shell is at the position of being combined with lower houseBoss is set, and the rectangular channel of described boss and lower house matches and merges press seal pad, realizes radial seal; Upper shell and underHousing two ends arrange respectively semicircle opening, and two semicircle openings form a circular hole altogether, and pipeline is from upper shell and lower casingIn the middle of body, circular hole passes;

Lower house two ends arrange respectively two spud piles, and spud pile adopts screw thread or welding manner to be connected with lower house, flexible strandBypass pipeline is fixed on the spud pile on lower house both sides;

Filler is annular and is divided into 3 semi-rings, between filler semi-ring, connects by tongue-and-groove mode; Gland is annular and is dividedBe 3 semi-rings, adopt tongue-and-groove mode to connect between gland semi-ring, gland inner side arranges step near pipeline location;

Filler is arranged in the annular space that upper shell and lower house and pipeline form, and is pressed on upper shell and lower house with glandTwo ends; Upper shell and lower house two ends are respectively provided to few two groups of fillers, and the tongue-and-groove connecting portion of two groups of adjacent fillers is mutually wrongOpen;

Upper shell and lower house centre position arrange screwed hole, and regulating shaft is arranged on the annular space between upper shell and lower house and pipelineIn, regulating shaft is installed to by engage thread in the screwed hole of upper shell and lower house; Hexagonal counterbore in regulating shaft arranged outside, adjustsStep is set in the middle of nodal axisn, and sleeve is installed in regulating shaft inner side step and uses nut axial restraint, sleeve both sides hinged support rod,Strut withstands in the inner side step of gland.

The beneficial effect that the present invention has is: 1, a kind of duct closing type device of the present invention adopts axial packing seal, filler itBetween connect by tongue-and-groove mode, can better realize axial seal; 2, radial seal of the present invention and axial seal separate completely,Can regulate respectively pretightning force, sealing effectiveness more can ensure; 3, after installation of the present invention, just can easily by rotation regulating shaftThe pretightning force of adjusting filler, operates simpler.

Brief description of the drawings

Fig. 1 is structure diagram of the present invention.

Fig. 2 is the axial cutaway view of Fig. 1 of the present invention.

Fig. 3 is structure diagram of the present invention.

Fig. 4 is filler assembling schematic diagram of the present invention.

Fig. 5 is gland assembling schematic diagram of the present invention.

Fig. 6 is assembling schematic diagram of the present invention.

In figure: 1. lower house; 2. upper shell; 3. filler; 4. pipeline; 5. gasket seal; 6. bolt; 7. gland; 8. regulating shaft;9. sleeve; 10. strut; 11. spud piles; 12. flexible strand.

Detailed description of the invention

The present invention is not subject to the restriction of following embodiment, can determine concrete according to technical scheme of the present invention and actual conditionsEmbodiment. Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the present invention is done to following description. Upper and lower, left,The position relationship of right grade is to determine according to the layout direction of Figure of description 1.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6.

The semicylinder that upper shell 2 and lower house 1 are hollow, upper shell 2 is connected by bolt 6 with lower house 1, lower house1 with upper shell 2 connecting portions, the groove that cross section is rectangle being set, and gasket seal 5 is set in described rectangular channel. Upper shell 2 withThe position of lower house 1 combination arranges boss, and the rectangular channel of described boss and lower house 1 matches and merges press seal pad 5, realExisting radial seal. Upper shell 2 and lower house 1 two ends arrange respectively semicircle opening, and two semicircle openings form one altogetherIndividual circular hole, pipeline 4 passes from upper shell 2 and the middle circular hole of lower house 1.

Lower house 1 two ends arrange respectively two spud piles 11, and spud pile 11 adopts and is threaded with lower house 1, flexible strand 12Bypass pipeline 4 is fixed on the spud pile 11 on lower house 1 both sides. Lower house 1 can be fixed under pipeline 4 leakage points like thisSide, can install all parts in lower house 1 easily.

Filler 3 is for annular and be divided into 3 semi-rings, between filler 3 semi-rings, connects by tongue-and-groove mode, is so more conducive toThe sealing of filler 3 binding sites. Gland 7 is for annular and be divided into 3 semi-rings, between gland 7 semi-rings, adopts tongue-and-groove modeConnect. Gland 7 inner sides arrange step near pipeline 4 positions.

Filler 3 is arranged in the annular space that upper shell 2 and lower house 1 and pipeline 4 form, and is pressed on upper casing with gland 7Body 2 and lower house 1 two ends. The tongue-and-groove that upper shell 2 and lower house 1 two ends arrange respectively 3, two groups of fillers 3 of two groups of fillers connectsConnect position and mutually stagger, can reduce like this impact of connecting portion on integral sealing effect between filler 3 semi-rings.

Upper shell 2 and lower house 1 centre position arrange screwed hole, and regulating shaft 8 is arranged on upper shell 2 and lower house 1 and pipelineIn annular space between 4, regulating shaft 8 use engage thread are installed in the screwed hole of upper shell 2 and lower house 1. Outside regulating shaft 8Side arranges interior hexagonal counterbore, can rotate regulating shaft 8 by inner hexagon spanner. In the middle of regulating shaft 8, step is set, sleeve 9 is pacifiedInstall in regulating shaft 8 inner side step and use nut axial restraint, sleeve 9 both sides hinged support rods 10, strut 10 withstands on gland 7Inner side step on.

Principle of the present invention is:

Between upper shell 2 and lower house 1, realize radial seal by tongue-and-groove mode press seal pad 5. Outside regulating shaft 8The interior hexagonal counterbore rotation regulating shaft 8 of end, regulating shaft 8 holds out against strut 10 by sleeve 9, and strut 10 is compressed and is filled out by gland 7Material 3, realizes axial seal.

Claims (1)

1. a pipe leakage dot encapsulation device, comprises lower house, upper shell, filler, gasket seal, bolt, gland, tuneNodal axisn, sleeve, strut, spud pile, flexible strand, is characterized in that:

Upper shell and lower house are the semicylinder of hollow, and upper shell and lower house are bolted, lower house with upper shellConnecting portion arranges the groove that cross section is rectangle, in described rectangular channel, gasket seal is set; Upper shell is at the position of being combined with lower houseBoss is set, and the rectangular channel of described boss and lower house matches and merges press seal pad, realizes radial seal; Upper shell and underHousing two ends arrange respectively semicircle opening, and two semicircle openings form a circular hole altogether, and pipeline is from upper shell and lower casingIn the middle of body, circular hole passes;

Lower house two ends arrange respectively two spud piles, and spud pile adopts screw thread or welding manner to be connected with lower house, flexible strandBypass pipeline is fixed on the spud pile on lower house both sides;

Filler is annular and is divided into 3 semi-rings, between filler semi-ring, connects by tongue-and-groove mode; Gland is annular and is dividedBe 3 semi-rings, adopt tongue-and-groove mode to connect between gland semi-ring, gland inner side arranges step near pipeline location;

Filler is arranged in the annular space that upper shell and lower house and pipeline form, and is pressed on upper shell and lower house with glandTwo ends; Upper shell and lower house two ends are respectively provided to few two groups of fillers, and the tongue-and-groove connecting portion of two groups of adjacent fillers is mutually wrongOpen;

Upper shell and lower house centre position arrange screwed hole, and regulating shaft is arranged on the annular space between upper shell and lower house and pipelineIn, regulating shaft is installed to by engage thread in the screwed hole of upper shell and lower house; Hexagonal counterbore in regulating shaft arranged outside, adjustsStep is set in the middle of nodal axisn, and sleeve is installed in regulating shaft inner side step and uses nut axial restraint, sleeve both sides hinged support rod,Strut withstands in the inner side step of gland.