CN201016421Y

CN201016421Y - Y-shaped pipe flexible enlarging collar seal

Info

Publication number: CN201016421Y
Application number: CNU2006200589958U
Authority: CN
Inventors: 刘国坚
Original assignee: Guangdong Liansu Technology Industrial Co Ltd
Current assignee: Guangdong Liansu Technology Industrial Co Ltd
Priority date: 2006-05-16
Filing date: 2006-05-16
Publication date: 2008-02-06
Anticipated expiration: 2016-05-16

Abstract

The utility model provides a Y-shaped pipe flexible flared seal ring which is arranged between a flared convex nozzle pipe and an inserted pipe, and plays a role in prevention of leakage when pipes are connected in a flared way. The seal ring comprises an inner lip, an outer lip and a root. The inner lip and the outer lip extend from one end of the root separately at an angle from the root; the included angle between the outer lip and the root is larger than the inner angle of the flared convex nozzle pipe. Pressurization of connected pipes is achieved through the tightening force and the tension between the inner lip, the outer lip and the inserted pipe, and the flared convex nozzle pipe.

Description

A kind of " Y " shape pipeline flexible enlarging seal ring

Technical field

The utility model belongs to tubing accessory field, particularly relates to a kind of anti-seal ring that leaks when being used for pipeline and connecting.

Technical background

The comparatively advanced technology that is used for the pipeline connection at present is an enlarging socket joint mode, and enlarging socket joint mode all adopts sealed loop-pad in expanding between tang tubing and the insertion tube in case leak-stopping water usually, radial contraction takes place easily owing to connect the two ends of back tubing, make sealability not strong, often occur the situation of leaking in use for some time.At present in the research and development of convenience that is conceived to insert for enlarging socket joint mode Study on Technology and socket joint equipment more, seldom be conceived to cause the problem of leaking owing to tubing shrinks, even the research of relevant sealed against leakage aspect, also mostly on improvement socket joint equipment, even overcome seepy question, also high because of the complexity of equipment and cost makes practicability not strong.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, proposes a kind of novel seal ring, and the sealing circle can be realized the long-term leakproof purpose after pipeline connects by enlarging socket joint mode.

In order to realize the foregoing invention purpose, the technological scheme of employing is:

A kind of " Y " shape pipeline flexible enlarging seal ring, expanding tang tubing and inserting between the tubing, expand the Shi Qifang effect of leaking that connects in pipeline, described seal ring comprises epipharynx, outer lip and root, epipharynx and outer lip separately extend from root one end, all be certain included angle, and the angle between outer lip and the root is greater than the interior angle that expands tang tubing with root.

The outer side surface of outer lip described in the utility model is circular-arc.Because it is cylindrical that tubing expands the inwall of tang, so adopt the circular-arc location of expanding tang with tubing that makes things convenient for.

The both sides of described root are provided with the hollow out position, and the conscious rubber material level of snatching a moment during described hollow out position design " Y " rubber seal makes rubber seal that the feed supplement space be arranged in compression process, and are therefore relatively easy in installation process.

Seal ring of the present invention adopts elastic plastic material.

So far, the utility model adopts the flexible enlarging seal ring of " Y " shape to contact with insertion outer pipe wall, expansion tang pipe material inner wall respectively by epipharynx and outer lip.Because the angle between outer lip and the root is greater than the interior angle that expands tang tubing, so when connecting by enlarging socket joint mode, outer lip is forced to tighten up, it has outside tension force and expands the tang pipe material inner wall firmly to be adjacent to, simultaneously, because the elasticity of seal ring, tightening up of outer lip makes epipharynx produce and the opposite package power of the outside tension force of outer lip, to pack tightly the outer wall that inserts tubing, realized drip-preventing function by double seal.

And, when adopting the utility model, just begun to have fluid to pass through and pressure is very little, seal by the epipharynx of seal ring and outer lip and package power and tension force between insertion outer pipe wall, the expansion tang pipe material inner wall; When producing big pressure along with the cumulative of fluid, elastic expansion takes place in the heel of seal ring under hydrodynamic pressure, thereby epipharynx and outer lip and insertion outer pipe wall, the package power and the tension force that expand between the tang pipe material inner wall increase feasible sealing better, and the effect of the big more sealing of the pressure of fluid is good more, has guaranteed the usefulness of long term seal.

Description of drawings

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

Fig. 2 is for expanding the schematic representation of angle α in the tang tubing;

Fig. 3 is the angle β schematic representation of outer lip and root;

Schematic representation when Fig. 4 connects for the utility model is applied to pipeline.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Structural representation of the present utility model as shown in Figure 1, comprise root 33, epipharynx 31, outer lip 32, described epipharynx 31, outer lip 32 extend respectively outward at an end of root 33, and it is one circular-arc that the outer side surface of outer lip 32 becomes, and the both sides of root 33 are provided with hollow out position 34.

Angle β between outer lip 32 and the root 33 is greater than the interior angle α that expands tang tubing, and its structure is shown in accompanying drawing 2, accompanying drawing 3.

The utility model is applied to schematic representation that pipeline connects as shown in Figure 4, wherein, insert tubing 1 and be inserted into the expansion tang end that expands tang tubing 2, insert tubing 1 and expand between the tang tubing 2 and be placed with seal ring 3 described in the utility model, because seal ring 3 adopts the flexible enlarging seal ring of " Y " shape, it contacts with insertion tubing 1 outer wall, expansion tang tubing 2 inwalls respectively by epipharynx 31 and outer lip 32.Because the angle β of outer lip 32 between root 33 is greater than expanding the interior angle α that tang tubing 2 expands the tang end, so when connecting by enlarging socket joint mode, outer lip 32 is forced to tighten up, it has outside tension force and expands tang tubing 2 inwalls firmly to be adjacent to, simultaneously, because the elasticity of seal ring, tightening up of outer lip 32 makes epipharynx 31 produce and the opposite package power of outer lip 32 outside tension force, to pack tightly the outer wall that inserts tubing 1, realized drip-preventing function by double seal.And the utility model hollows out the rubber material level as hollow out position 34 when design " Y " shape rubber seal, make rubber seal that the feed supplement space be arranged in compression process, and is therefore relatively easy in installation process.

And, insert tubing 1 and expand tang tubing 2 is connected after, just begun to have fluid to pass through and pressure is very little, seal by package power and tension force between the epipharynx 31 of seal ring 3 and outer lip 32 and insertion tubing 1 outer wall, expansion tang tubing 2 inwalls; When producing big pressure along with the cumulative of fluid, elastic expansion takes place in the heel 33 of seal ring 3 under hydrodynamic pressure, thereby epipharynx 31 and outer lip 32 and the package power and the tension force increase of inserting between tubing 1 outer wall, expansion tang tubing 2 inwalls make sealing better, and the effect of the big more sealing of the pressure of fluid is good more, has guaranteed the usefulness of long term seal.

Claims

1. " Y " shape pipeline flexible enlarging seal ring, expanding tang tubing and inserting between the tubing, expand the Shi Qifang effect of leaking that connects in pipeline, it is characterized in that comprising epipharynx (31), outer lip (32) and root (33), and the angle (β) between outer lip (32) and the root (33) is greater than the interior angle (α) that expands tang tubing.

2. " Y " according to claim 1 shape pipeline flexible enlarging seal ring is characterized in that the outer side surface of described outer lip (2) is circular-arc.

3. " Y " according to claim 1 and 2 shape pipeline flexible enlarging seal ring is characterized in that the both sides of described root (33) are provided with the hollow out position.