CN213809315U

CN213809315U - Double-end socket sealing structure of hollow structure wall winding pipe

Info

Publication number: CN213809315U
Application number: CN202022891932.3U
Authority: CN
Inventors: 皮建军; 王扬保; 喻进; 梁天雄
Original assignee: Sichuan Heda New Material Technology Co ltd; Chengdu Zhongqi Power Technology Service Co ltd
Current assignee: Sichuan Heda New Material Technology Co ltd; Chengdu Zhongqi Power Technology Service Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-27
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses a hollow structure wall winding pipe double-end socket joint seal structure, the tip of winding pipe inserts in the double-end socket joint connects to realize sealing connection through the sealing washer, the sealing washer includes first sealing washer and second sealing washer, sets up the interval between first sealing washer and the second sealing washer and forms inclosed experimental chamber, be provided with test passage on the double-end socket joint, experimental chamber is through test passage and the switch-on of double-end socket joint external environment. The utility model discloses a set up two sets of seal structure, realized carrying out dual flexible seal to the junction, the sealed integrity of junction keeps effectual, simultaneously, constitutes simple inspection structure through test chamber and test channel, only needs the leakproofness through the inspection test chamber just can obtain the sealing performance of whole junction, and the operation process is simple high-efficient, and the degree of accuracy is high, and the leakproofness inspection of specially adapted pipeline job site has overcome the not enough that current seal test method exists.

Description

Double-end socket sealing structure of hollow structure wall winding pipe

Technical Field

The utility model relates to a hollow structure wall winding pipe technical field, in particular to hollow structure wall winding pipe double-end socket joint seal structure.

Background

The hollow structure wall winding pipe is a special structure wall pipe which is made of high-density polyethylene as a raw material by adopting a thermal state winding forming process and has higher external pressure resistance, and the pipe with the diameter of 3 meters can be produced by the unique forming process, which is difficult to finish by other production processes. Due to the excellent melt welding performance of high-density polyethylene (HDPE), the product forming process and the product quality are guaranteed, and various reliable modes such as electrothermal melt welding, thermal contraction connection and the like are provided for construction connection, and the high-density polyethylene (HDPE) is an important reason for the rare occurrence of leakage. The hollow structure wall winding pipe has stable chemical property, strong acid, alkali and salt resistance, strong impact resistance, light weight, convenient connection and low price of raw materials, and is mainly applied to a municipal engineering drainage system.

The existing connection mode of the wall winding pipe with the hollow structure mainly comprises clamp connection, thermal contraction connection, electric hot melting belt connection and the like, the connection modes have respective advantages and disadvantages, and socket electric hot melting welding is the connection mode with the widest application range. The bell and spigot connection mode is that a sealing connection structure is formed by assembling the bidirectional bell and spigot joint, the sealing ring and the winding pipe, and the bell and spigot connection mode has the characteristics of difficulty in breaking, good reliability, strong sealing property and the like. However, in the existing socket electrofusion welding sealing structure, the sealing ring used is of an annular structure, which can only form a sealing layer at the joint, the stress structure is poor, the deformation resistance is general, once the sealing ring leaks at the joint, the sealing performance of the joint is damaged, the sealing effect is not optimal, and the sealing ring cannot be used as a pressure pipeline for connection.

In order to solve the problem, the utility model discloses a winding arrangement tubular product high seal high strength connector (CN209876259U) is disclosed in the earlier patent of people, the connector of this patent mainly includes bellmouth and socket, bellmouth and socket respectively with the tip fixed connection of winding pipe, bellmouth and socket are each other to inserting and form sealing connection structure, wherein, realize once sealedly through spigot surface and socket inclined plane phase-match, realize spigot surface and socket inclined plane contact cross-section's sealed through the inner seal circle, realize the sealed of winding pipe port through the port sealing washer. The sealing structure has the following defects in the using process: 1. the requirement on materials is high, a high-strength composite material is required to be adopted for manufacturing the socket and the socket, and the socket are required to be additionally configured, so that the use cost is overhigh; 2. the sealing performance of the inserting surface and the socket inclined surface realizes double sealing through rigid profile matching and a flexible inner sealing ring, but the sealing effect of a rigid contact surface is poor when the rigid contact surface is deformed under stress, the hidden danger of leakage obviously exists when the sealing of the contact surface is realized only by the inner sealing ring with a single layer, and the integrity maintaining effect of the sealing of the joint is poor.

Meanwhile, the existing tightness inspection of the elastic sealing ring joint at the joint of the winding pipe of the wall of the hollow structure basically adopts an elastic sealing ring joint sealing test method specified by the national standard (GB/T19472.2-2004) for inspection, and the sealing test method has the general principle; assembling the pipe and tube to form a test piece, adding a predetermined internal hydrostatic pressure p₁To level off its sealing performance, if possible, followed by a specified higher internal hydrostatic pressure p₂To level up its sealing performance, each pressurization is maintained for a prescribed time, at which time it is checked whether the joint is leaking. The sealing test method has the advantages that the specific operation steps are complex, the requirement on a test site is high, the sealing test method is difficult to implement and poor in accuracy when the sealing performance of a construction site is checked, and the sealing performance of a joint cannot be accurately reflected in real time.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: to the problems existing in the prior art, the double-end socket and spigot seal structure of the hollow structure wall winding pipe and the seal test method are better in seal effect and more convenient in seal inspection, through arranging 2 sets of seal structures and arranging the test cavity and the test channel based on the structure, double-layer flexible seal of the joint is realized, the deformation resistance is strong, the seal performance is not easy to damage, the seal effect is better, meanwhile, the traditional seal test method is changed, a simple inspection structure is formed through the test cavity and the test channel, the seal performance of the whole joint can be obtained only by inspecting the seal performance of the test cavity, the adaptability to the test site is strong, the operation process is simple, the accuracy is high, the seal inspection method is particularly suitable for the seal inspection of the pipeline construction site, and the defects in the prior art are overcome.

The utility model adopts the technical scheme as follows: the utility model provides a hollow structure wall winding pipe double-end socket joint seal structure, includes winding pipe, double-end socket joint and sealing washer, the tip of winding pipe inserts in the double-end socket joint to realize sealing connection through sealing washer and double-end socket joint, its characterized in that, the sealing washer includes first sealing washer and second sealing washer, first sealing washer and second sealing washer are all established on the winding pipe, and are followed the axis direction setting of winding pipe sets up between first sealing washer and the second sealing washer interval formation inclosed experimental chamber, be provided with the experimental passageway that is used for the medium circulation on the double-end socket joint that experimental chamber corresponds, experimental chamber passes through experimental passageway and the switch-on of double-end socket joint external environment, experimental passageway is sealed through the sealing plug towards the outside one end of double-end socket joint.

Due to the arrangement of the structure, the end parts of two sections of winding pipes to be connected are respectively inserted into the double-end socket joint, the part of the winding pipe extending into the double-end socket joint is in sealing connection with the inner wall of the double-end socket joint through the sealing ring, 2 sealing rings are arranged along the axial direction of the winding pipe, and then 2 sealing structures are formed at the joint, a test cavity is formed by a closed cavity between the 2 sealing structures, the 2 sealing structures are all used for flexibly sealing the joint, so that the defect of rigid sealing can be avoided, and double insurance can be realized on the sealing performance of the joint. Meanwhile, when the tightness is checked, the tightness of the test cavity only needs to be checked through the test channel, if the tightness of the test cavity is good, the tightness of the sealing interfaces of the first sealing ring and the second sealing ring on the two sides of the sealing cavity is good, the tightness of the whole joint is reflected well, the problem that the whole joint is directly subjected to the sealing test check is solved, convenience, accuracy and high efficiency are achieved, and the defects of the existing sealing test mode are overcome.

Further, the utility model discloses a hollow structure wall winding pipe double-end socket joint seal structure with the utility model discloses people's prior patent technique compares, has following advantage:

1. the special design and manufacture of a socket, a bell mouth and other sealing connecting components are not needed, the existing double-end socket joint and a sealing ring are utilized, and the use cost is obviously lower than that of the design of the bell mouth and the socket;

2. the utility model adopts 2 sets of flexible sealing structures to improve the sealing performance of the joint, has strong adaptability to deformation and stable sealing performance, and the prior patent technology realizes 2 layers of sealing by a mode of rigid sealing and flexible sealing, the rigid sealing has poor adaptability to deformation, the integrity of the joint sealing keeps poor effect, and compared with the utility model, the sealing performance is slightly weak;

3. the seal structure of prior patent can only seal the inspection through current sealed test mode, and then has the problem that the on-the-spot sealed inspection is difficult, the operation is complicated, the degree of accuracy is not high, and the utility model discloses improved seal structure can adopt more convenient, accurate and the sealed test mode of efficient to seal the inspection, and adaptability to inspection environment is strong, and the practicality is stronger.

The utility model discloses in, establish earlier when first sealing washer and second sealing washer and establish the back on the winding pipe, when again with double-end socket joint sealing connection, for the convenience first sealing washer and second sealing washer cover establish on the winding pipe, also for the interval between fixed first sealing washer and the second sealing washer simultaneously, first sealing washer and second sealing washer are connected through connecting the stem, the thickness of connecting the stem is not higher than the thickness of first sealing washer or second sealing washer. The setting of connecting the stem makes first sealing washer and second sealing washer form monolithic structure to in assembly and to the junction realize sealed, also fixed the interval between first sealing washer and the second sealing washer simultaneously, make the volume parameter of test chamber stable, be convenient for later stage standardization and standardization sealing performance's inspection.

The utility model discloses in, it also can be with first sealing washer and the direct assembly of second sealing washer in double-end socket joint connects, and it also can form stable seal structure and test chamber, also can be convenient for later stage standardization and standardization sealing performance's inspection. Specifically, the inner wall of double-end socket joint is provided with the sealing washer mounting groove that is used for holding first sealing washer and second sealing washer, first sealing washer and second sealing washer fixed mounting are on double-end socket joint's inner wall.

The utility model discloses in, in order to keep the seal structure integrity of junction, double-end socket joint has hollow structure, experimental passageway runs through double-end socket joint's well cavity, and does not put through with this well cavity. The double-end socket joint with hollow structure is equivalent to double-wall structure, the inner wall of the double-end socket joint is in sealing contact with the outer wall of the end part of the sealing ring and the winding pipe, the outer wall is in contact with the landfill, due to the hollow structure, only the outer wall of the double-end socket joint is stressed to deform and cannot be stressed to deform during soil restoration, the integrity of the inner wall structure can be ensured, meanwhile, when the soil is restored during construction, the internal gas pressure in the hollow cavity is increased under the action of external force, the inner wall of the double-end socket joint is forced to be tightly attached to the outer wall of the winding pipe at the joint, and therefore the sealing performance of the joint is further improved.

Further, in order to enable the first sealing ring and the second sealing ring to form a sealing interface better, a plurality of sealing flanges in an annular structure are arranged on the outer wall of the first sealing ring or/and the outer wall of the second sealing ring, the sealing flanges are arranged at equal intervals along the axial direction of the first sealing ring or the second sealing ring, the vertical surface of each sealing flange inclines towards the assembling direction of the first sealing ring or the second sealing ring to form an inclined surface, and the included angle between each sealing flange and the wall surface of the first sealing ring or the second sealing ring is 70-80 degrees.

The utility model discloses in, establish earlier when first sealing washer and second sealing washer and establish the back on the winding pipe, when again with double-end socket joint sealing connection, establish on hollow structure wall winding pipe for the sealing washer cover better to material saving manufacturing cost simultaneously, it is the banding structure to connect the stem, many connection stems of equipartition on the terminal surface of first sealing washer or second sealing washer. The strip-shaped connecting stem can avoid the problem that the friction force between the connecting stem and the winding pipe of the hollow structure wall is too large to influence the installation, and simultaneously, the material consumption is saved.

Further, to the embodiment of above-mentioned sealing washer, in order to realize sealing up the flat mouthful of winding pipe tip, the one end that the connecting stem was kept away from to first sealing washer is turned over inwards and is formed the port sealing, the outer fringe of port sealing and the laminating of the inner wall of hollow structure wall winding pipe to through the port lock of profile complex mode and hollow structure wall winding pipe. The flat opening at the end part of the winding pipe can be completely sealed in a buckling mode, and sewage is not easy to leak into the port.

Further, the sealing plug with the double-end socket joint passes through screw-thread fit, profile cooperation, joint or bonds and realizes detachable fixed sealing connection, preferably realizes detachable fixed sealing connection through screw-thread fit.

Further, for the convenience of installation and the sealed effect that improves the sealing washer, the second sealing washer is made by meeting water inflation rubber materials.

The utility model discloses still include a hollow structure wall winding pipe double-end socket joint seal structure seal test method, including adopting foretell hollow structure wall winding pipe double-end socket joint seal structure, seal test method includes following step:

s1, taking the assembled double-end socket and spigot seal structure of the hollow structure wall winding pipe as a sample, and injecting liquid into the inspection cavity through the inspection channel until the inspection cavity is full of liquid;

after S2 and S1 are finished, hydrostatic test pressure is applied to the test cavity through a mechanical or hydraulic device, in the process of applying the test pressure, the hydrostatic test pressure is maintained for a certain time after pressurization every time, whether the sealing structure leaks or not is checked in the time until the sealing structure increases to the specified test pressure, and the hydrostatic test pressure is maintained for a certain time;

and S3, stopping the test if leakage occurs during the process of applying the test pressure, or decompressing and discharging the liquid in the test cavity after all the pressure-bearing time is finished, and finishing the test.

The utility model discloses a sealing test method, through the setting of test passageway and test chamber, only need carry out the leakproofness inspection through test passageway to the test chamber, if the test chamber leakproofness is good, the first sealing washer of explanation sealed chamber both sides and the sealed interface leakproofness of second sealing washer are good, reflect the leakproofness of whole junction from this well, avoided directly to the problem that whole junction carries out the sealed test inspection, the utility model discloses a sealing test method is convenient, accurate, high-efficient, and to experimental scene adaptability strong, the operation process is simple, and the leakproofness inspection of specially adapted pipeline construction scene has overcome the not enough that prior art exists.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a setting up 2 sets of flexible seal structures in the junction, the airtight cavity between 2 sets of flexible seal structures then constitutes the test chamber, 2 sets of flexible seal structures all are used for carrying out the flexible seal to the junction, and to deformation adaptability strong, the integrity of junction seal keeps effectually, realizes "double insurance" to the sealing performance of junction, and sealed effect is better, has avoided the defect that the rigid seal exists;

2. the utility model discloses a seal test method has been redesigned based on 2 sets of flexible seal structure, through the setting of test passageway and test chamber, only need carry out the leakproofness inspection through the test passageway to the test chamber, if the test chamber leakproofness is good, the sealed interface leakproofness of the first sealing washer of explanation sealed chamber both sides and second sealing washer is good, reflects the leakproofness of whole junction from this well, has avoided directly carrying out the problem of sealed test inspection to whole junction, the utility model discloses a seal test method is convenient, accurate, high-efficient, has overcome the defect that traditional seal test method exists, and to experimental scene adaptability reinforce, operating process is simple, and the leakproofness inspection of specially adapted pipeline construction scene has been overcome, has overcome the not enough that prior art exists.

Drawings

Fig. 1 is a partial schematic view of a double-end socket sealing structure of a hollow structure wall winding pipe in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a sealing ring of the present invention;

fig. 3 is a schematic view of a part of a socket sealing structure of embodiment 2 of the present invention;

fig. 4 is a schematic view of a part of a socket sealing structure of embodiment 3 of the present invention;

fig. 5 is a schematic view of a part of a socket sealing structure of embodiment 4 of the present invention;

fig. 6 is a partial schematic view of a socket sealing structure according to embodiment 5 of the present invention;

fig. 7 is a schematic view of a part of a socket sealing structure according to embodiment 6 of the present invention;

fig. 8 is a schematic view of a socket sealing structure according to embodiment 8 of the present invention;

fig. 9 is a schematic view of a socket seal structure according to embodiment 9 of the present invention.

The labels in the figure are: 1 is the winding pipe, 101 is grafting portion, 2 is double-end socket joint, 201 is grafting portion, 202 is for cutting off the rubber ring, 203 is experimental passageway, 204 is the sealing plug, 205 is well cavity, 206 is the sealing washer mounting groove, 3 is first sealing washer, 4 is the second sealing washer, 5 is experimental chamber, 6 is the connecting stem, 7 is the port sealing portion, 8 is the sealing flange, 9 is the sealing portion.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1, a double-end socket sealing structure of a winding pipe with a hollow structure wall comprises a winding pipe 1, a double-end socket joint 2 and a sealing ring, wherein the end of the winding pipe 1 forms an insertion part 101, the insertion part 101 is inserted into the double-end socket joint 2, two ends of the double-end socket joint 2 form socket parts 201, the insertion part 201 is matched with the socket parts 201 and is connected in a sealing manner through the sealing ring, a partition rubber ring 202 is arranged in the middle of the inner wall of the double-end socket joint 2 and is used for limiting the distance of the insertion part 101 extending into the socket parts 201, meanwhile, the cross section of the pipeline can be completely blocked through the partition rubber ring 202, so that liquid of the pipeline cannot flow into a groove of the pipeline, the sealing ring comprises a first sealing ring 3 and a second sealing ring 4, the first sealing ring 3 and the second sealing ring 4 are both sleeved on the insertion part 101 and are arranged along the axial direction of the winding pipe, a space is arranged between the first sealing ring 3 and the second sealing ring 4 to form a closed test cavity 5, a test channel 203 for medium (such as water) circulation is arranged on the socket part 201 corresponding to the test cavity 5, the test cavity 5 is communicated with the external environment of the socket part 201 through the test channel 203, and one end, facing the outside of the socket part 201, of the test channel 201 is sealed through a sealing plug 204.

In the structure, the double-end socket joint 2 is of a solid structure, the first sealing ring 3 and the second sealing ring 4 form two sets of flexible sealing structures at the joint, the deformation adaptability is strong, the integrity of the joint sealing is kept effectively, double insurance is realized on the sealing performance of the joint, and the defect of rigid sealing is avoided. Further, the sealing plug 204 and the test channel 203 are detachably fixedly and hermetically connected through screw fitting, profile fitting, clamping or bonding, and preferably, the detachable fixedly and hermetically connected through screw fitting.

Further, since the test chamber 5 and the test channel 203 are provided, the sealing test method thereof comprises the following steps:

s1, assembling the winding pipe 1, the double-end socket joint 2 and the sealing ring according to the structure of the figure 1, and taking the assembled components as a sample;

s2, detaching the sealing plug 204 of the test channel 203, and then injecting water into the test cavity through the test channel 203 until the injected water overflows the test channel 203;

s3, hydrostatic pressure is applied to the test channel 203 through a mechanical or hydraulic device, and then the test pressure p is applied to the test cavity 5₁Boosting is carried out in a step-by-step pressurizing mode, in the boosting process, a certain time (for example, 10min) is maintained after each boosting, and whether the sealing structure leaks or not is checked in the time until the sealing structure increases to a specified test pressure p₁Then maintaining for a certain time (for example, maintaining for 15 min);

and S4, during the process of pressure increase or pressure maintaining (namely, in the time period of pressure maintaining), if a leakage condition occurs, stopping the test, otherwise, after S3 is completed, reducing the pressure and discharging the water in the test cavity 5 and the test channel 203, and finishing the test.

Further, fig. 1 shows a situation that the first sealing ring 3 and the second sealing ring 4 are sleeved on the inserting portion 101 first and then are connected with the socket portion 201 in a sealing manner, for this reason, in order to facilitate the first sealing ring 3 and the second sealing ring 4 to be sleeved on the winding pipe 1 and fix the distance between the first sealing ring 3 and the second sealing ring 4, the first sealing ring 3 and the second sealing ring 4 are connected through the connecting stem 6, as shown in fig. 2, the thickness of the connecting stem 6 is not higher than the thickness of the first sealing ring 3 or the second sealing ring 4, and is generally half of the thickness of the first sealing ring 3 or the second sealing ring 4. The setting of connecting stem 6 makes first sealing washer 3 and second sealing washer 4 form monolithic structure to in assembly and to the junction realize sealed, also fixed the interval between first sealing washer 3 and the second sealing washer 4 simultaneously, make the volume parameter of test chamber 5 stable, be convenient for later stage standardization and standardization sealing performance's inspection.

Further, in order to better sleeve the sealing ring on the hollow structure wall winding pipe and save material manufacturing cost, the connecting stem 6 is of a belt-shaped structure, and a plurality of connecting stems, preferably 4 connecting stems, are uniformly distributed on the end surface of the first sealing ring 3 or the second sealing ring 4. The strip-shaped connecting stem 6 can avoid the problem that the friction force between the connecting stem and the winding pipe of the hollow structure wall is too large to influence the installation, and simultaneously, the material consumption is saved. Further, in order to realize sealing the flat mouth of winding pipe end portion, the one end that connecting stem 6 was kept away from to first sealing washer 3 turns up inwards and forms port sealing 7, the outer fringe of port sealing 7 and the laminating of the inner wall of hollow structure wall winding pipe to through the port lock of profile complex mode and hollow structure wall winding pipe. The flat opening at the end part of the winding pipe can be completely sealed in a buckling mode, and sewage is not easy to leak into the port.

Example 2

Embodiment 2 is the same as embodiment 1, except that a plurality of sealing flanges 8 in an annular structure are arranged on the outer wall of the first sealing ring 3 or/and the second sealing ring 4, the sealing flanges 8 are arranged at equal intervals along the axial direction of the first sealing ring 3 or the second sealing ring 4, the vertical surface of each sealing flange 8 is inclined towards the assembling direction of the first sealing ring 3 or the second sealing ring 4 to form an inclined surface, and the included angle between each sealing flange 8 and the wall surface of the first sealing ring 3 or the second sealing ring 4 is 70-80 degrees (specifically selected according to actual requirements). As shown in fig. 3, fig. 3 shows that the first seal ring 3 and the second seal ring 4 both have 3 sealing flanges 8, an included angle between the sealing flange 8 and the wall surface of the first seal ring 3 or the second seal ring 4 is 80 °, the sealing flange 8 can better form a sealing interface, and the integrity of the sealing structure formed by the first seal ring 3 and the second seal ring 4 is ensured.

Example 3

Embodiment 3 is the same as embodiment 2 except that the double-ended socket 2 has a hollow structure, and the test passage 203 extends through the hollow cavity 205 of the double-ended socket 2 and is not communicated with the hollow cavity 205. As shown in fig. 4, the double-end socket joint 2 with a hollow structure is equivalent to a double-wall structure, the inner wall of the double-end socket joint 2 is in sealing contact with the sealing ring and the outer wall of the end part of the winding pipe 1, and the outer wall is in contact with the landfill, because of the existence of the hollow structure, only the outer wall of the double-end socket joint 2 is stressed and deformed during soil restoration, but the inner wall is not stressed and deformed, so that the integrity of the inner wall structure can be ensured, meanwhile, when the soil is restored during construction, the inner air pressure in the hollow cavity 205 is increased under the action of external force, so that the inner wall of the double-end socket joint 2 is forced to be tightly attached to the outer wall of the winding pipe 1 at the joint, and the sealing performance of the joint is further improved.

Example 4

Embodiment 4 is the same as embodiment 1 except that the first seal ring 3 and the second seal ring 4 are directly fitted into the double-ended socket joint 2. As shown in fig. 5, the inner wall of the double insert socket 2 is provided with a packing installation groove 206 for receiving the first packing 3 and the second packing 4, and the first packing 3 and the second packing 4 are fixedly installed on the inner wall of the double insert socket 2. At this time, the first sealing ring 3 and the second sealing ring 4 may be sealing rings of a common structure, without providing the sealing flange 8 or the connecting stem 6 and the port sealing portion 7, and the flat surface of the insertion portion 101 of the winding pipe 1 may be sealed by other processing methods, for example, sealing glue may be applied. Embodiment 4 can also achieve the same technical effects as embodiment 1, and the first sealing ring 3 and the second sealing ring 4 are directly arranged in the double-end socket joint 2, so that standardized installation is facilitated.

Example 5

Embodiment 5 is the same as embodiment 4 except that the double-ended socket joint 2 has a hollow structure, as shown in fig. 6.

Example 6

Embodiment 6 is the same as embodiment 5 except that, since the double-ended socket joint 2 has a hollow structure, it is difficult to directly machine the seal ring installation groove 206 for the case where the outer wall and the inner wall thereof are thin, and this has a great adverse effect on the structural strength of the double-ended socket joint 2. Therefore, in order to form the packing installation groove 206 in the inner wall of the double insert-and-socket joint 2, the concave portion formed concavely in the inner wall portion of the double insert-and-socket joint 2 constitutes the packing installation groove 206, as shown in fig. 7, in this structure, the concave packing installation groove 206 is not only convenient for processing and molding, but also does not adversely affect the structural strength of the double insert-and-socket joint 2, which is a preferred embodiment.

Example 7

Embodiment 7 is the same as embodiment 1, and its difference lies in that second sealing washer 4 is made by meeting water inflation rubber materials, meet water inflation rubber materials adopt current material can, through the inflation effect of meeting water inflation rubber materials, further improve the sealed effect of sealing washer, the installation of being convenient for simultaneously prevents tensile second sealing washer 4 in the installation.

Example 8

Embodiment 8 is the same as embodiment 7, except that a sealing part 9 is provided on the first sealing ring 4, as shown in fig. 8, the sealing part 9 is provided at one end of the first sealing ring 4 facing the end of the winding pipe 1, the sealing part 9 is bent to form a concave structure and is in snap fit with the port of the winding pipe 1, that is, the sealing part 9 is to completely wrap the port of the winding pipe 1, such an arrangement can completely block the cross section of the pipeline, so that the liquid cannot flow into the groove of the pipeline, and the port sealing part 7 is not required to be separately provided.

Example 9

Example 9 is the same as example 8 except that the second seal ring 4 is provided at the port of the double-ended socket joint 2, and as shown in fig. 9, a recessed structure is provided at the port of the double-ended socket joint 2 for receiving the second seal ring 4, which facilitates the installation of the connection structure and facilitates and speeds the use of the connection structure while ensuring the sealability of the connection structure.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a hollow structure wall winding pipe double-end socket joint seal structure, includes winding pipe, double-end socket joint and sealing washer, the tip of winding pipe inserts in the double-end socket joint to realize sealing connection through sealing washer and double-end socket joint, its characterized in that, the sealing washer includes first sealing washer and second sealing washer, first sealing washer and second sealing washer are all established on the winding pipe, and are followed the axis direction setting of winding pipe sets up between first sealing washer and the second sealing washer interval formation inclosed experimental chamber, be provided with the experimental passageway that is used for the medium circulation on the double-end socket joint that experimental chamber corresponds, experimental chamber passes through experimental passageway and the switch-on of double-end socket joint external environment, experimental passageway is sealed through the sealing plug towards the outside one end of double-end socket joint.

2. The double-ended socket seal structure of a hollow structural wall-wound pipe according to claim 1, wherein said first seal ring and said second seal ring are connected by a plurality of connecting stems, and the thickness of said connecting stems is not higher than the thickness of said first seal ring or said second seal ring.

3. The double-ended socket seal structure of a wall-wound pipe having a hollow structure of claim 1, wherein the inner wall of the double-ended socket joint is provided with a packing installation groove for receiving a first packing and a second packing, which are fixedly installed on the inner wall of the double-ended socket joint.

4. The double-ended socket sealing structure of a hollow structure wall-wound pipe according to claim 1, wherein said double-ended socket has a hollow structure, and said test passage extends through a hollow cavity of the double-ended socket and does not communicate with the hollow cavity.

5. The double-ended socket sealing structure of the winding pipe with the hollow structure wall as claimed in claim 2, wherein a plurality of sealing flanges in an annular structure are arranged on the outer wall of the first sealing ring or/and the second sealing ring, the sealing flanges are arranged at equal intervals along the axial direction of the first sealing ring or the second sealing ring, the vertical surfaces of the sealing flanges are inclined towards the assembling direction of the first sealing ring or the second sealing ring to form inclined surfaces, and the included angle between each sealing flange and the wall surface of the first sealing ring or the second sealing ring is 70-80 degrees.

6. The double-ended socket sealing structure of the hollow structure wall winding pipe according to claim 5, wherein the connecting stem is in a strip structure, and a plurality of connecting stems are uniformly distributed on the end surface of the first sealing ring or the second sealing ring.

7. The double-ended socket sealing structure of the hollow structure wall winding pipe according to claim 6, wherein the end of the first sealing ring away from the connecting stem is flanged inwards to form a port sealing portion, and the outer edge of the port sealing portion is attached to the inner wall of the hollow structure wall winding pipe and is buckled with the port of the hollow structure wall winding pipe in a profile fitting manner.

8. The double-ended socket sealing structure of the wall-wound pipe with a hollow structure as claimed in claim 1, wherein the sealing plug and the double-ended socket joint are detachably fixedly and hermetically connected through screw fit, profile fit, clamping or bonding.

9. The double-ended female seal structure of claim 1, wherein said second seal ring is made of a water-swellable rubber material.