CN102454847A

CN102454847A - Pipe fitting for absorbing expansion and earthquake-proof

Info

Publication number: CN102454847A
Application number: CN2011103125927A
Authority: CN
Inventors: 李到妍; 宋炫雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-15
Filing date: 2011-10-14
Publication date: 2012-05-16
Also published as: KR101059014B1

Abstract

An expandable and earthquake-proof pipe joint is provided to prevent the destroying of pipe joint by preventing the increasing of partial flow pressure and vortex which is caused by the inflow of fluid. An expandable and earthquake-proof pipe joint comprises a body, a packing, a flange, a pressing ring, a combining member, and a buffering member. One end of a pipe is inserted into the body. A level difference is formed at an end of the body in which one end of the pipe is inserted. An inner diameter of the body is expanded through the level difference. The packing seals the inner surface of the body and the outer surface of the pipe. The flange pressurizes the packing to a vertical plane of the level different part in the longitudinal direction of a pipe. The buffering member absorbs the expansion and contraction of the pipe.

Description

Stretch and the shatter-proof pipe joint of using

Technical field

The present invention relates to a kind of pipe joint, be specifically related to a kind ofly make it airtight, and absorb the flexible and shatter-proof pipe joint of using that pipe dilatation that heat and environment according to the inside and outside occur is made by the outside in order to interconnect a plurality of pipes.

Background technique

Usually continuing long-distancely when transporting fluid such as liquid or gas, using pipe mostly as its handover instrument.

These pipes according to kind, composition and the Environmental Conditions of fluid, use various materials such as plastics class or metal species mostly.

These pipes, interconnect by a plurality of pipes, and the connection part of these pipes roughly all are equipped with pipe joint up to consumption from activity.

Here, when flowing in the pipe bigger liquid of temperature variation or gas or pipe are installed on bigger regional of temperature variation, according to the temperature or the peripheral temperature of stream material, tube swelling can appear or pipe shrinks.

In addition, according to rocking and external force such as wind of the installation ground of these pipes or body of wall etc., pipe range can change along with fine shaking.

For the pipe dilatation that absorbs so occur, can on pipeline, connect bellows, the pipe joint of making in order when pipe is flexible, to realize pipe to slide also capable of using.

, utilize the pipe joint 10 of traditional bellows here, such as Fig. 1 diagram, comprising:

Bellows 11, its basis is stretched in the temperature variation of the fluid of internal flow;

Pipe 12, its two end part at bellows 11 are carried out bonding through welding respectively;

Protective tube 13, it makes bellows 11 be in interior configuration state, thereby by outer protection bellows 11;

Sliding rail 13a, it is formed at the two end part of protective tube 13 respectively;

Lead ring 14, the one of which end is connected with sliding rail 13a bolt, and the other end is tortuous and contact with pipe 12.

Therefore, when pipe 12 was flexible, lead ring 14 and pipe 12 bellows 11 that slides along sliding rail 13a, and make jointly shrank, thereby absorption tube 12 is flexible.

But bellows 11 and pipe 12 carry out bondingly usually through welding manner, therefore, make the welding job of these bellowss 11 and pipe 12 have certain difficulty.

In addition,, used plain washer parts such as (not shown), but this mode equally also needs a lot of weld intervals for the ease of welding job.

In addition, utilize the pipe joint 20 of the slip of traditional telescopic pipe, such as Fig. 2 diagram, comprising:

Pipe 21, it makes the reduced diameter of an end through forming end difference 21a;

Bulb tube 22, it is installed on an end of aforementioned tube 21;

Shell 23, it covers above-mentioned bulb tube 22.

At this moment, for the sliding scale of limiter tube 21, can in the groove of pipe 21 vertical end, insert ring-type obturator 21b, therefore, the sliding scale of pipe 21 is to be formed at the end difference 21a of an end and the spacing between the obturator 21b.

Can external diameter and internal diameter be dwindled through in order to manage the end difference 21a that 21 slip forms here.

In addition, the length of an end of the pipe that external diameter and internal diameter are dwindled is pipe 21 slip Prediction distance, has just formed the certain-length that is equivalent to manage 21 flexible estimation range.

Therefore, pipe 21 can slide along bulb tube 22 when flexible, thus the stretching of absorption tube 21,

But along with external diameter and internal diameter dwindle, in an end of the pipe that possesses certain-length 21, mobile the pressing of the fluid of flow duct 21 inside rises to the respective degrees that internal diameter dwindles, thereby not only can interfere flowing of fluid, but also can hinder fluid to flow smoothly.

In addition, the obturator 21b that installs for the sliding scale of limiter tube 21, when being destroyed owing to pipe 21 excessive slip, the combining of pipe 21 and bulb tube 22 and shell 23 is disengaged, thereby can't accomplish pipe joint 20 original functions.

In addition, because fluid flows into the space of formation between obturator 21b and bulb tube 22, so the stream pressure of basis generation when fluid flows into and flows out and the vortex phenomenon of fluid etc., can't accomplish the mobile of fluid smoothly.

In addition,,, therefore install and have narrow limitation, make complex structure because of it again, so bring many difficulties for the making of pipe joint 20 because its manufacturing cost is expensive though pipe joint 20 has shatter-proof function.

Summary of the invention

The present invention develops in order to address the above problem, and the objective of the invention is to, and a kind of flexible and shatter-proof pipe joint of use is provided, and installs through simple corrugated tube, when realizing the flexible absorption function to pipe, and the still shatter-proof function of elder generation.

The present invention also aims to; A kind of flexible and shatter-proof pipe joint of using is provided; It makes flowing of fluid more smooth and easy because of the variation that does not have external diameter in the pipe; And protruding for the buffering of one, thereby, also can prevent to break away from through cushioning protruding destruction even when managing excessive slip at formation of an end of pipe and pipe.

In addition, the present invention also aims to, a kind of flexible and shatter-proof pipe joint of use is provided, it can make the pipe that combines with pipe joint, with length direction spool be the center, carry out the rotation of rotation mode, thereby possess outstanding shatter-proof function.

The present invention develops for realizing above-mentioned purpose, according to the flexible and shatter-proof pipe joint of using of the present invention, it is characterized in that this pipe joint is installed on the connection part of pipe in order to interconnect a plurality of pipes, and comprises:

Body, it can insert end of each pipe, and forms the end difference that internal diameter is enlarged in each end to the direction of insertion of pipe;

Liner, it and places on the end difference in the form of a ring, carries out airtight to the inside of body and the outside of pipe;

Flange, it stresses on liner on the vertical surface of end difference to the length direction of pipe, and combines with body;

Combination tool, it can make flange and body combine;

Press ring, it and is entrained between the end and liner of flange of the liner that can pressurize in the form of a ring;

Buffering instrument, but the telescopic variation of its absorption tube.

, it is characterized in that the buffering instrument comprises that a plurality of bufferings are protruding here, it is formed at the outer periphery on the same plane by determining deviation protrusion respectively in an end of the pipe that is inserted in body.And the buffering of protruding for one with pipe is protruding; Be positioned at horizontal plane scope but also the space that forms by the height H that supports grab of the end difference of the length direction that not only belongs to relevant pipe; And flexible according to what manage, sliding to the length L that supports between the grab by press ring.

In addition, it is characterized in that combination tool comprises:

A plurality of bonding pads, but it is at the section of each end of the body of insertion tube, forms by determining deviation protrusion respectively;

Engagement groove is formed on the bonding pad, and is caved in by a central side position simultaneously of pipe, makes a position of another side and this depression position be connected to form concave shape;

A plurality of combinations are protruding, and its body at flange end of tossing about is formed at the outer periphery on the same plane by determining deviation protrusion,

And combine protruding, in placing each engagement groove after, protrudingly carry out axle jointly with flange and rotate by combining, make it to combine with engagement groove.

As another embodiment, it is characterized in that combination tool comprises:

A plurality of bonding pads, its body at the flange end of tossing about is formed at the outer periphery on the same plane by determining deviation protrusion respectively;

Engagement groove is formed on the bonding pad, and is caved in a central side position simultaneously of pipe, and a position of another side connects the formation concave shape with this depression position;

A plurality of combinations are protruding, but it is formed at the outer periphery on the same plane by determining deviation protrusion in each end of the body of insertion tube,

And combine convexity, after placing between each engagement groove,, make it to combine with engagement groove by combining convexity and flange to carry out the axle rotation jointly.

In addition, under pipe is in upright state, see that it is characterized in that, the upper shape that the combination that mutually combines is protruding and engagement groove is in contact with one another can comprise horizontal part, down slop portion, vertical component effect according to the order of sequence along bonding position from the center of pipe.

According to another embodiment, under pipe is in upright state, look from the center of pipe, it is characterized in that the upper shape that the combination that mutually combines is protruding and engagement groove is in contact with one another can comprise horizontal part along bonding position, the portion that is inclined upwardly, vertical component effect according to the order of sequence.

, it is characterized in that bonding pad also comprises here: joining hole, it forms by running through between longitudinal plane to the engagement groove of length direction to pipe, and joint bolt is pressurizeed to combining convexity.

Technique effect of the present invention is:

As stated, effect according to the present invention is, through being installed on the pipe joint of each connection part of managing, can the flexible modification of pipe be absorbed, and therefore, can get rid of the making or the installation of corrugated tube, and replenish flexible absorption function and shatter-proof function.

In addition, effect of the present invention is that warp did not change in an end of the pipe that not only is connected with pipe joint had, and the internal diameter of whole pipe is consistent, therefore, can keep the same mobile pressure of the inner fluid of flow duct, realizes that fluid is mobile smoothly.

In addition, its effect is, it is protruding to form buffering in an end of pipe, and with the pipe type that becomes one, thereby because excessively flexible when causing the slip of pipe, the disengaging that the destruction by the buffering convexity that prevents may to occur because of the independent installation buffering is protruding causes.

In addition, its effect is, and is flexible according to excessively; When pipe is inserted into body; The buffering convexity can pressure-producing part be a media, at an end face of body with support to replenish in the elastic range of spacing or liner between the grab and move, thus the destruction of suppressing the buffering convexity.

In addition; Its effect is; Connection part at each pipe; Got rid of the space that can make between fluid intake channel joint and each pipe, therefore eliminated the rising of pressing etc. of flowing of the eddy current that flows into and produce during outflow space at fluid and part, extruded the destruction of existing pipe joint thereby got rid of to flow according to eddy current and part.

In addition, when the connection part of each pipe is connected by pipe joints such as " L " word, " T " fonts, can when earthquake take place, these connection parts are axle with the length direction of each pipe, form the rotation of rotation mode, thereby realize shock-proof effect.For example, the pipe that level is installed serves as that axle carries out the rotation of rotation mode with the center line of level; And vertically arranged pipe, then forwards or the rear carry out pivot rotation.Therefore, not only can absorb the flexible of the pipe that occurs because of heat or earthquake, also can tackle the ground that occurs because of earthquake and rock, thereby realize shatter-proof function.

In addition, its effect is, pipe joint simple in structure made easily, and manufacturing cost is cheap, and therefore the cost burden of a plurality of installations reduces.

Description of drawings

Fig. 1 is the diagrammatical side cross-sectional view that an embodiment of conventional pipe joint is shown,

Fig. 2 is the diagrammatical side cross-sectional view that another embodiment of conventional pipe joint is shown,

Fig. 3 illustrates according to flexible and shatter-proof diagrammatical perspective view with pipe joint of the present invention,

Fig. 4 is the separate perspective view at the pipe joint shown in Fig. 3,

Fig. 5 a and Fig. 5 b are at the side cross-sectional view of the pipe joint shown in Fig. 3 and user mode figure,

Fig. 6 a to Fig. 6 c is combine embodiment's the diagrammatical profile of state of the combination engagement groove protruding and bonding pad that is illustrated in the flange shown in Fig. 3,

Fig. 7 is the perspective view that flexible and shatter-proof another embodiment with pipe joint shown in Fig. 3 is shown,

Fig. 8 a and Fig. 8 b are the separate perspective view and the side cross-sectional view of the pipe joint shown in Fig. 7.

Embodiment

Below, through accompanying drawing, specify according to the flexible and shatter-proof pipe joint of using of the present invention.

Fig. 3 illustrates according to flexible and shatter-proof diagrammatical perspective view with pipe joint of the present invention; Fig. 4 is the separate perspective view at the pipe joint shown in Fig. 3; Fig. 5 a and Fig. 5 b are at the side cross-sectional view of the pipe joint shown in Fig. 3 and user mode figure, and Fig. 6 a to Fig. 6 c is combine embodiment's the diagrammatical profile of state of the combination engagement groove protruding and bonding pad that is illustrated in the flange shown in Fig. 3.

At first, such as Fig. 3 and Fig. 4 diagram, according to the flexible and shatter-proof pipe joint of using of the present invention, can comprise:

Body 110, it inserts connection part side one end of interconnective pipe 101 respectively, and forms the end difference 111 that internal diameter is enlarged respectively at the two end part of an end of insertion tube 101;

Liner 120, it and places on the above-mentioned end difference 111 in the form of a ring, carries out airtight to the inside and the outside of pipe 101 of body 110;

Flange 130, it combines with body 110, and forms support grab 131 at the end inner periphery protrusion of tossing about of body 110 in the time of the above-mentioned liner of end difference 111 pressurization 120;

Combination tool, it can make above-mentioned flange 130 and body 110 combine;

The buffering instrument, but its absorption tube 101 is flexible.

Here, combination tool shown in Fig. 4 to Fig. 5 b, can comprise:

A plurality of bonding pads 140, it forms by determining deviation protrusion at the section at body 110 two ends;

Engagement groove 141, it is caved in by a central side position simultaneously of pipe on bonding pad 140, and makes a position of another side and this depression position be connected to form concave shape;

A plurality of combinations are protruding 132, and its body 110 at flange 130 is tossed about in the end, is formed at the outer periphery on the same plane by determining deviation protrusion.

Bonding pad 140 is integrally formed with body 110; In conjunction with convexity 132, be integrally formed with flange 130.As required, can make separately, and fix through bonding modes such as welding.

In addition, see that the shape of a side of bonding pad 140 that forms engagement groove 141 is shown in Fig. 6 a to Fig. 6 c from the center of the pipe 101 erect.

Here, ring-type press ring 121 will be entrained between the end of liner 120 and flange 130.

Outermost to the bonding pad 140 of managing 101 length direction forms joining hole 142, above-mentioned joining hole 142 in, can run through installation joint bolt 142.

Here, run through by joint bolt 142 under the state of joining hole 142, also can combine with combining protruding 132 bolts.

Fig. 6 a to Fig. 6 c for the convenience of explaining, shows under the state that pipe 101, body 110, flange 130 are erect, and when 101 the center of managing is seen, combines protruding 132 states that combine with engagement groove 141.

Shown in Fig. 6 a, the engagement groove 141 of the contact that mutually combines and the upper shape that combines protruding 132 can form

horizontal part

132a, 141a, down

slop portion

132b, 141b, vertical component effect 132c, 141c according to the order of sequence along engagement groove 141 and the bonding position that combines protruding 132.

At this moment, in order to improve engagement groove 141 and the combination force that combines protruding 132, shown in Fig. 6 b, form protruding 132d at the horizontal part 132a that combines protruding 132, form groove 141d at the horizontal part 141a of engagement groove 141, it can interconnect.

In addition, according to another embodiment, shown in Fig. 6 c; The mutually combine engagement groove 141 and the upper shape that combines protruding 132 of contact can form horizontal part 132a according to the order of sequence along engagement groove 141 and the bonding position that combines protruding 132, and 141a, the 132b of portion is inclined upwardly; 141b, vertical component effect 132c, 141c.The combination of this shape though need to force to embed, also is a difficulty of removing its combination to opposite direction in order correspondingly to improve.

Certainly,, support, random combination therefore can not occur and remove by joint bolt 143 in conjunction with concluding of convexity 132 and engagement groove 141.

In addition, the buffering instrument shown in the long-pending 5b of Fig. 5 a, comprises the protruding 101a of a plurality of bufferings, and it is formed at the outer periphery on the same plane by a determining deviation respectively at the two end part of pipe 101.

At this moment, cushioning protruding 101a is positioned at and not only belongs to the horizontal plane 111b scope of the end difference 111 of managing 101 length direction but also can form the space that flange 130 supports grabs 131 height H.

Here, cushion protruding 101a and form the protrusion shape, and form a plurality of by a determining deviation at grade by pipe 101 modification.At this moment, cushion protruding 101a and also can form ring-shaped continuous.

Fig. 5 b shows the state that the protruding 101a of buffering is slided by original position, and slip that should the protruding 101a of buffering, and because of the length change according to the flexible pipe 101 of pipe 101, protruding 101a moves generation by buffering.Perhaps, because of moving of the pipe 101 that changes according to the mobile pressure of fluid or ground, protruding 101a moves generation by buffering.

Below, through accompanying drawing, specify according to flexible and shatter-proof another embodiment of the present invention with pipe joint.

Fig. 7 is the perspective view that flexible and shatter-proof another embodiment with pipe joint shown in Fig. 3 is shown, and Fig. 8 a and Fig. 8 b are the separate perspective view and the side cross-sectional view of the pipe joint shown in Fig. 7.

Such as Fig. 7 to Fig. 8 b diagram, through will stretch and shatter-proof another embodiment and Fig. 3 with pipe joint 100 illustrated flexible and shatter-proofly compare with pipe joint 100, concentrate its different constituent element be described.

Here, with Fig. 3 to Fig. 6 b in the constituent element of identical reference symbol, belong to the identical constituent element that possesses same function.

In the embodiments of figure 3, be formed on the flange 130 in conjunction with convexity 132, bonding pad 140 is formed at body 110, and in another embodiment of Fig. 7, is formed at body 110 in conjunction with convexity 132, and bonding pad 140 is formed at flange 130.

At this moment, be formed at the outer periphery on the same plane at two end part, and bonding pad 140 is formed at the outer periphery on the same plane in the body 110 of flange 130 end of tossing about to the body 110 of managing 101 length direction in conjunction with protruding 132.

Identical with the embodiment of above-mentioned Fig. 3 in conjunction with protruding 132 with the shape of engagement groove 141, combining structure, function etc.

Below, flexible and shatter-proof combination and effect with pipe joint according to the embodiment of Fig. 3 are described.

At first, after an end of pipe 101 was inserted in body 110, liner 120 and press ring 121 were installed on the end difference 111 of body 110 according to the order of sequence, and flange 130 combines with the end bonding pad 140 that is formed at body 110.

At this moment; The protruding 101a of buffering that is formed at a pipe end of 101 and is positioned at and both belongs to the horizontal plane 111b scope of the end difference 111 of managing 101 length direction and the space that is formed by the height H that supports grab 131 between the support grab 131 of press ring 121 and flange 130.

Secondly, joint bolt 143 is installed in the joining hole 142 of bonding pad 140.

Thereby, realize the combination of pipe joint 100 and pipe 101.

Here; According to the body 110 of combination tool and the combination of flange 130; Flange 130 at body 110 and make combine protruding 132 to place between each engagement groove 141 after,, when a direction is carried out axle rotation, combine to form with engagement groove 141 at flange 130 through combining convexity 132.

At this moment, flange 130 combines in body 110, and the liner 120 that can make body 110 sides one end of flange 130 be opposite to end difference 111 pressurizes, and makes the inside of body 110 and the outside of pipe 101 firmly carry out airtight through liner 120.

Through press ring 121, the plus-pressure that the end by flange 130 is spread out of is passed to the one side of the liner 120 that contacts with press ring equably, thereby improves airtight power.

In addition, the plus-pressure that spreads out of when the end by liner 120 concentrates on a position of liner 120, the destruction of the liner 120 that just can prevent to take place.

Joint bolt 143 can be to combining protruding 132 to pressurize with engagement groove 141 is in bonding state, thus improve combine protruding 132 with the combination force of engagement groove 141.

Therefore, when 143 pairs of the joint bolts in being installed on joining hole 142 combine protruding 132 to pressurize, help to keep the combination that combines convexity 132 and engagement groove 141, also help to keep the pressurized state of an end of flange 130 press ring 121.

Cushion protruding 101a, be integrally formed type, therefore, in the sliding process of the protruding 101a of buffering, may occur being out of shape, but can prevent the phenomenon destroying and break away from through press ring 121 or flange 130 and the interference of supporting 131 of grabs by pipe 101 modification.

Cushion protruding 101a, when sliding in by the length L between the support grab of press ring 121 to flange 130 according to pipe 101 flexible, can be to managing 101 flexible the absorption.

In addition, in another embodiment of Fig. 7, with Fig. 3 be that strength is compared, only have some change on protruding 132 the formation position with combining at bonding pad 140, its combination and effect are identical, therefore omit its explanation.

Here, pipe 101 flexible modification is produced by the heat or the outside heat that flow in the inner fluid of pipe 101, and should be flexible can be through according to of the present invention flexible and shatter-proofly absorb with pipe joint 100.

In addition, even, make pipe 101 break away from original position through mobile pressure that flows in the fluid in the pipe 101 or the ground environment variation that comprises land subsidence, earthquake etc., also can be through flexible and shatter-proof stretching according to the present invention with pipe joint 100 absorption tubes 101.

In pipe joint 100; Through manage 101, the mutually combining of body 110 and flange 130, can avoid thoroughly fixing, therefore; Even manage 101 center lines with length direction serves as that axle carries out the rotation of rotation mode, also can continue to keep these parts 101,110, mutually combining between 130.

Therefore; As shown in Figure 1, at the connection part of each pipe 101 " T " font pipe joint 100 is installed, can when earthquake takes place; Pipe 101 on the horizontal line serves as that axle carries out the rotation of rotation mode with the center line of length direction, and the pipe 101 on the vertical line then forwards or rearward carries out the pivot rotation.

Therefore, can under pipe 101 and the prerequisite that is not destroyed of pipe joint 110, accomplish shatter-proof function.

Here, the pipe joint 100 of " L " font, through accomplishing shatter-proof function with the similar rotation mode of " T " font, and the pipe joint 100 of in-line also can improve its shatter-proof function through being connected with other " L " fonts or " T " font pipe joint 100.

In addition, when a plurality of pipe joints 100 are installed on adjoining position, can further improve its shatter-proof function.

In addition,, put down in writing the embodiment who connects two pipes, and only the body of the drum of hollow has been illustrated in order to explain according to the flexible and shatter-proof pipe joint of using of the present invention.

But; Can when connecting three pipes, utilize the body of " T " word shape; When connecting four pipes, utilize the body of "+" word shape, so that when connecting more multitube, utilize the correspondingly body of distortion, and install in each end of these bodys and to utilize each above-mentioned constituent element.

Therefore, the present invention is not only applicable to the connection procedure of two pipes, is applicable to the connection procedure of a plurality of pipes more than three yet.

As above-mentioned illustrated, the pursuer of technical field under the present invention should be able to understand the present invention under the situation that does not change its technological thought or essential characteristic, can implement through other concrete form.Therefore, the foregoing description conduct illustrates all aspects, is not limited only to this.Scope of the present invention mainly embodies through the claim scope, and should all belong in the scope of the present invention through all changes or the modification form that meaning, scope and the equivalent concepts of claim are drawn.

Description of reference numerals

100 pipe joints, 110 bodys

120 press ring, 130 flanges

131 support grab 132 combines protruding

140 bonding pads, 141 engagement grooves

142 joining holes

Claims

1. one kind is stretched and the shatter-proof pipe joint of using, and it is characterized in that, this pipe joint can be connection a plurality of pipes (101) and is installed on each pipe (101) connection part, and comprises:

Body (110), it can insert an end of said each pipe (101), and forms end difference (111) in each end of the end that can insert said pipe (101), thereby internal diameter is enlarged;

Liner (120), it places on the said end difference (111), and makes the inside of said body (110) and the outer face seal of said pipe (101);

Flange (130), it stresses on said liner (120) on the vertical surface (111a) to the said end difference (111) of the length direction of said pipe (101), and combines with said body (110);

Combination tool, it can make said flange (130) and said body (110) combine;

Press ring, it is entrained between the end and said liner (120) of said flange (130) of the said liner (120) that can pressurize;

The buffering instrument, it can absorb the flexible of said pipe (101);

Said buffering instrument comprises:

A plurality of bufferings protruding (101a), it is formed at the outer periphery on the same plane by determining deviation protrusion respectively in an end of the said pipe (101) that is inserted in said body (110), and with said tubular being integral;

Said buffering protruding (101a) is positioned at and not only belongs to horizontal plane (111b) scope of the said end difference (111) of the length direction of said pipe (101) but also the space that formed by the height (H) of said support grab (131);

And flexible according to said pipe (101), in by the length (L) between said press ring (121) to the said support grab (131), sliding;

Said combination tool can comprise:

A plurality of bonding pads (140), it is formed at the outer periphery on the same plane by determining deviation protrusion respectively at the section of each end of the said body (110) that can insert said pipe (101);

Engagement groove (141), it makes a position of another side connect the formation concave shape with this depression position by the position depression of the central side one side of said pipe (101);

A plurality of combinations protruding (132), its said body (110) at said flange (130) end of tossing about is formed at the outer periphery on the same plane by determining deviation protrusion,

And said combination protruding (132), after placing between said each engagement groove (141), said combination protruding (132) and said flange (130) carry out the axle rotation jointly, make it to combine with said engagement groove (141);

Under the state of said pipe (101) for setting; See that from the center of said pipe (101) the said upper shape that combines protruding (132) and said engagement groove (141) to be in contact with one another that mutually combines can be according to bonding position; Form horizontal part (132a according to the order of sequence; 141a), down slop portion (132b, 141b), vertical component effect (132c, 141c);

Said bonding pad (140) also comprises:

Joining hole, it forms by running through between longitudinal plane to the said engagement groove (141) to the length direction of said pipe (101), and joint bolt (143) is pressurizeed to said combinations convexity (132).

2. one kind is stretched and the shatter-proof pipe joint of using, and it is characterized in that, this pipe joint can be connection a plurality of pipes (101) and is installed on each pipe (101) connection part, and comprises:

Combination tool, it can make said flange (130) and said body (110) combine;

The buffering instrument, it can absorb the flexible of said pipe (101);

Said buffering instrument comprises:

A plurality of bufferings protruding (101a), it is formed at the outer periphery on the same plane by determining deviation protrusion respectively in an end of the said pipe (101) that is inserted in said body (110), and with said tubular being integral,

Said buffering protruding (101a) is positioned at and not only belongs to horizontal plane (111b) scope of the said end difference (111) of the length direction of said pipe (101) but also the space that formed by the height (H) of said support grab (131),

Said combination tool can comprise:

A plurality of bonding pads (140), its said body (110) at said flange (130) end of tossing about is formed at the outer periphery on the same plane by determining deviation protrusion respectively;

Engagement groove (141), it is formed on the said bonding pad (140), and is caved in by a central side position simultaneously of said pipe (101), makes a position of another side connect the formation concave shape with this depression position;

A plurality of combinations protruding (132), it is formed at the outer periphery on the same plane by determining deviation protrusion respectively in each end of said body (110) that can insert said pipe (101),

And said combination protruding (132), after placing between said each engagement groove (141), said engagement groove (141) and said flange (130) carry out the axle rotation jointly, make it to combine protruding (132) to combine with said;

Said bonding pad (140) also comprises:

3. the flexible and shatter-proof pipe joint of using according to claim 1 and 2 is characterized in that,

Under the state of said pipe (101) for setting; See that from the center of said pipe (101) the said upper shape that combines protruding (132) and said engagement groove (141) to be in contact with one another that mutually combines can be according to bonding position; Form horizontal part (132a according to the order of sequence; 141a), the portion that is inclined upwardly (132b, 141b), vertical component effect (132c, 141c).