CN101749513B

CN101749513B - Sealing gaskets of Hafu joint

Info

Publication number: CN101749513B
Application number: CN2010101157628A
Authority: CN
Inventors: 焦发兆
Original assignee: ANHUI TONGFA EQUIPMENT CO LTD
Current assignee: ANHUI TONGFA EQUIPMENT CO LTD
Priority date: 2010-01-30
Filing date: 2010-01-30
Publication date: 2012-07-04
Anticipated expiration: 2030-01-30
Also published as: CN101749513A

Abstract

The invention belongs to the technical field of emergency repair of a pipeline, which in particular relates to sealing gaskets of a Hafu joint. The sealing gaskets of the Hafu joint comprise sealing rings arranged at both sides, wherein convex parts are both arranged on the end faces of the sealing rings. When the Hafu joint is installed, the sealing gaskets are arranged on casings, and the two casings are oppositely installed at the outer side of the damaged part of a pipeline and fastened together by bolts. At the time, the sealing gaskets in the casings are oppositely installed, and the corresponding end parts of the adjacent sealing rings are also abutted together tightly. As the convex parts are both arranged on the end parts of the sealing rings in the invention, adjacent convex parts are also abutted together tightly. Under fastening action of the bolts, the convex parts generate compression deformation, and high-pressure resistance performance and water hammer resistance performance are enhanced, thereby enhancing sealing property of the end parts of the sealing rings and working reliability of the Hafu joint.

Description

Sealing gaskets of Hafu joint

Technical field

The invention belongs to the pipe first-aid technical field, be specifically related to a kind of sealing gaskets of Hafu joint.

Background technique

A large amount of running water pipes, fuel tube, steam tube and petrochemical industry conveyance conduits of using in production and the life; These pipelines all might be improper because of safeguarding, geology depression and external force collision etc. are former thereby seepage or breakage take place; When needing repairing, use the Hough joint that the seepage or the breakage spot of pipeline are carried out sealed envelope usually.

The housing that the structure of existing Hough joint comprises opposed installation be arranged on the sealing gasket on the housing, the structure of sealing gasket is symmetrically distributed about the medial axis of housing, the sealing gasket during installation on the two housings is opposed to be abutted in together to improve sealability.Yet the high voltage performance of the end of existing sealing gaskets of Hafu joint and anti-water hammer performance are not good, high-pressure liquid takes place easily go out accident, cause the seal failure of Hough joint, therefore demand urgently improving.

Summary of the invention

The purpose of this invention is to provide a kind of sealing gaskets of Hafu joint, its simple structure and good seal performance.

For realizing above-mentioned purpose, the present invention has adopted following technological scheme: a kind of sealing gaskets of Hafu joint, comprise the seal ring that is arranged on both sides, and be provided with protuberance on the end face of described seal ring.

When the Hough joint is installed; Sealing gasket is placed on the housing, and with the opposed outside that is installed in the piping failure position of two housings, and with bolt two housings is tightened together and to get final product; Sealing gasket in the housing is installed relatively at this moment, and the corresponding end of adjacent seals circle also is abutted together tightly.Owing to be provided with protuberance on the end of the seal ring among the present invention; Therefore adjacent protuberance is being abutted together tightly also; Under the fastening effect of bolt; Described protuberance produces compressive strain, high voltage performance and anti-water hammer performance boost, thus improved the sealability of seal ring end and the functional reliability of Hough joint.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the plan view of Fig. 1, and the part that is painted with hatching among Fig. 2 is the B-B sectional view among Fig. 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is the A-A sectional view of Fig. 2.

Embodiment

Shown in Fig. 1～3, a kind of sealing gaskets of Hafu joint comprises the seal ring 10 that is arranged on both sides, is provided with protuberance 11 on the end face of described seal ring 10.

Described protuberance 11 has multiple implementation, is trapezoidal such as its cross section, as preferred version of the present invention; Described protuberance 11 is the chock shape; One side end face and the seal ring 10 of chock are connected as a single entity, and the opposite side end face is skewed, and the outer ring of selfsealings circle 10 is protruding gradually to inner ring; Protuberance 11 simple structures of this structure, materials are economized and are convenient to and make and realize.

Further; As shown in Figure 3, the inclination angle beta of the skewed end face of described protuberance 11 is 5～15 °, also is that the angle β between the both sides end face of chock shape of protuberance 11 is 5～15 degree; When adopting this structure; The protruding end of two protuberances 11 that are oppositely arranged will be driven plain under the fastening effect of bolt, and produce the sealability of enough deformation with the end of improving seal ring 10, and the other end of two protuberances 11 also will abut in together tightly simultaneously; Sealing area increases the sealability with further raising end, has also reduced difficulty of construction simultaneously and has improved speed of application.

As preferred version of the present invention, shown in Fig. 1～3, the end near protuberance 11 of described seal ring 10 is provided with support platform 12, and the cross-section area of support platform 12 is greater than the cross-section area of seal ring 10.

Because the end face of seal ring 10 abuts in together when mounted opposite one another; And the protuberance on the end face 11 is compressed distortion; So the pressure that bear the end of seal ring 10 is bigger; The setting of support platform 12 not only can increase the area of contact of seal ring 10 end faces, and can increase the structural strength of end, helps improving the sealability of end seal face.

Further, a side that is positioned at seal ring 10 inner rings of described support platform 12 is the plane, and extend along the tangential of seal ring 10 inner rings on this plane and intersect with the skewed end face of protuberance 11, shown in Fig. 1～3.

Above-mentioned set-up mode makes the cross section of end of seal ring 10 be rectangle or be roughly rectangle; Seal ring end after two adjacent faces combine is the column shape; Not only make the sealing area of end increase; Also improve the structural strength of end greatly, thereby greatly improved the high voltage performance and the anti-water hammer performance of end seal face.

As preferred version of the present invention; Like Fig. 1, shown in 2; Be provided with between the described seal ring 10 and connect the Stamping Steel Ribbon 20 of end each other; Stamping Steel Ribbon 20 is provided with is convenient to its positioning block that installs and fixes and/or locating slot 23, thereby the Stamping Steel Ribbon 20 that can prevent the sealing gasket sidepiece takes place to turn on one's side or go out under the effect of partial high pressure or water hammer, has guaranteed the sealability of Hough joint.

On the described Stamping Steel Ribbon 20 positioning block or locating slot can be set, better so that positioning block to be set usually, can increase the structural strength of Stamping Steel Ribbon 20 simultaneously.

Further, as shown in Figure 4, the cross section of described Stamping Steel Ribbon 20 is that the end face at wide at the top and narrow at the bottom trapezoidal, trapezoidal upper base place links to each other with the end face of seal ring 10, and described positioning block 23 is arranged on the trapezoidal end face that belongs to of going to the bottom.

Be embedded at Hough joint housing Stamping Steel Ribbon 20 longitudinally in the groove during installation; Because positioning block 23 is arranged on the end face at the trapezoidal place of going to the bottom; Also be the bottom that positioning block 23 is arranged on Stamping Steel Ribbon 20, and Hough joint housing is provided with and positioning block 23 corresponding recesses, positioning block 23 is aimed at the recess on the housings and embedded can be with Stamping Steel Ribbon 20 installation in position; Therefore positioning block 23 not only improves the sealability of Hough joint, and is convenient to install and construction.

Further, as shown in Figure 2, described positioning block 23 is for to be arranged on the convexity on the Stamping Steel Ribbon 20, and positioning block 23 is along the length direction setting of Stamping Steel Ribbon 20, and positioning block 23 is separately positioned on the two end part and the middle part of Stamping Steel Ribbon 20.

Positioning block 23 is arranged on the Stamping Steel Ribbon 20 as projection or raised line, helps improving the structural strength of Stamping Steel Ribbon 20; And a plurality of positioning blocks 23 are set along the length direction of Stamping Steel Ribbon 20, and then help improving the harmony of the intensity that Stamping Steel Ribbon 20 directly makes progress at Hough joint housing, help the reliably working of Stamping Steel Ribbon 20.

Claims

1. a sealing gaskets of Hafu joint comprises the seal ring (10) that is arranged on both sides, it is characterized in that: be provided with protuberance (11) on the end face of described seal ring (10); Described protuberance (11) is the chock shape, and a side end face of chock and seal ring (10) are connected as a single entity, and the opposite side end face is skewed, and the outer ring of selfsealings circle (10) is protruding gradually to inner ring; The end near protuberance (11) of described seal ring (10) is provided with support platform (12), and the cross-section area of support platform (12) is greater than the cross-section area of seal ring (10).

2. sealing gaskets of Hafu joint according to claim 1 is characterized in that: the angle of inclination of the skewed end face of described protuberance (11) is 5～15 °.

3. sealing gaskets of Hafu joint according to claim 1 is characterized in that: a side that is positioned at seal ring (10) inner ring of described support platform (12) is the plane, and extend along the tangential of seal ring (10) inner ring on this plane and intersect with the skewed end face of protuberance (11).

4. sealing gaskets of Hafu joint according to claim 1 is characterized in that: be provided with between the described seal ring (10) and connect the Stamping Steel Ribbon of end (20) each other, Stamping Steel Ribbon (20) is provided with is convenient to its positioning block that installs and fixes and/or locating slot (23).

5. sealing gaskets of Hafu joint according to claim 4; It is characterized in that: the cross section of described Stamping Steel Ribbon (20) is wide at the top and narrow at the bottom trapezoidal; The end face at trapezoidal upper base place links to each other with the end face of seal ring (10), and described positioning block (23) is arranged on the end face at the trapezoidal place of going to the bottom.

6. according to claim 4 or 5 described sealing gaskets of Hafu joint; It is characterized in that: described positioning block (23) is for being arranged on the convexity on the Stamping Steel Ribbon (20); Positioning block (23) is along the length direction setting of Stamping Steel Ribbon (20), and positioning block (23) is separately positioned on the two end part and the middle part of Stamping Steel Ribbon (20).