CN205013856U - Top expanding connects - Google Patents

Abstract

The utility model discloses a top-expanding joint. The top-expanding joint comprises a flange casing, and a detachable expansion pipe and a detachable jacking pipe are arranged inside the flange casing. The advantages of the top expansion joint of the utility model are: due to the use of top pressure connection, the fixing is firm and reliable, the sealing performance is good, the installation is convenient, and it is not easy to leak. In addition, the anti-slip tooth protrusion can effectively prevent the slippage of the pipeline, and the effect is obvious. The top expansion joint is mainly used in non-excavation pipeline repair projects, and is used for the connection between the pipeline to be repaired and the inner flexible hose. The joint has good reliability, sealing and convenience.

Description

Top expansion joint

technical field

The utility model relates to a pipeline connection device, more precisely, a top expansion joint.

Background technique

When laying or maintaining pipeline systems, especially flexible pipelines, it is often necessary to install joints to the pipelines. Existing pipeline joints mostly adopt flange connection, and the connection is prone to loosening and leakage, and the reliability is poor.

Utility model content

The utility model mainly solves the technical problems existing in the prior art, thereby providing a top-expanding joint.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

A top-expansion joint, the top-expansion joint includes a flange casing, a separable expansion tube and a detachable jacking tube are arranged inside the flange casing, and the flange casing includes a Cylindrical flange sleeve, the head of the flange sleeve is provided with an annular first flange ring disc, and the tail of the flange sleeve is provided with an annular second flange ring disc, The outer side of the second flange is provided with an annular first sealing ring groove, the expansion tube includes a cylindrical expansion cylinder, and the top of the expansion cylinder is provided with an annular The expansion joint clasp, the size of the expansion joint cylinder is larger than the expansion joint clasp ring, the bottom of the expansion joint cylinder is provided with an expansion joint flanging, and the outer wall of the expansion joint cylinder is provided with There is an anti-skid tooth protrusion array composed of anti-skid tooth protrusions, the jacking tube includes a cylindrical jacking cylinder main body, a jacking cylinder flanging is provided at the tail of the jacking cylinder main body, and the first sealing ring groove There is a sealing ring inside.

As a preferred embodiment of the present invention, an annular second sealing ring groove is provided on the inner wall of the flange of the top cylinder, and another sealing ring is provided in the second sealing ring groove.

As a preferred embodiment of the present invention, an annular sealing ring protrusion is provided on the edge of the top tube flange, and the sealing ring protrusion cooperates with the expansion joint flange of the expansion tube.

As a preferred embodiment of the present invention, an expansion joint array composed of expansion joints is provided on the side wall of the expansion joint cylinder.

As a preferred embodiment of the present invention, the inner wall of the flange sleeve is provided with an array of compensation grooves composed of compensation grooves.

The advantages of the top expansion joint of the utility model are: due to the use of top pressure connection, the fixing is firm and reliable, the sealing performance is good, the installation is convenient, and it is not easy to leak. In addition, the anti-slip tooth protrusion can effectively prevent the slippage of the pipeline, and the effect is obvious. The top expansion joint is mainly used in non-excavation pipeline repair projects, and is used for the connection between the pipeline to be repaired and the inner flexible hose. The joint has good reliability, sealing and convenience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the use structure of the jack expansion joint of the present utility model;

Fig. 2 is a schematic diagram of the use structure of the jack expansion joint in Fig. 1, which is another perspective at this time;

Fig. 3 is a cross-sectional view of the top expansion joint in Fig. 2 along the line A-A;

Fig. 4 is a detailed enlarged schematic view of area B of the top expansion joint in Fig. 3;

Fig. 5 is an exploded schematic diagram of the three-dimensional structure of the jacking expansion joint of the present invention;

Fig. 6 is a three-dimensional structural schematic diagram of the flange jacket of the top expansion joint in Fig. 5;

Fig. 7 is a cross-sectional view of the flange jacket in Fig. 6 along line C-C;

Fig. 8 is an enlarged schematic view of the details of the D area of the flange jacket in Fig. 7;

Fig. 9 is a schematic diagram of the three-dimensional structure of the expansion tube of the top-expansion joint in Fig. 5;

Fig. 10 is a cross-sectional view of the expansion tube of the top expansion joint in Fig. 9 along line E-E;

Fig. 11 is an enlarged schematic view of the details of the F area of the expansion tube of the top-expansion joint in Fig. 10;

Figure 12 is an enlarged schematic view of the details of the G area of the expansion tube of the top expansion joint in Figure 10;

Fig. 13 is a schematic diagram of the three-dimensional structure of the jacking pipe of the jacking expansion joint in Fig. 5;

Fig. 14 is a cross-sectional view of the jacking pipe of the jacking expansion joint in Fig. 13 along the line H-H;

Fig. 15 is an enlarged schematic view of the details of the I area of the jacking pipe of the jacking expansion joint in Fig. 14;

Fig. 16 is a schematic cross-sectional structure diagram of the flange jacket of the jacking expansion joint in Fig. 5, which is the second embodiment at this time;

Fig. 17 is a detailed enlarged schematic diagram of the J area of the flange jacket in Fig. 16;

Fig. 18 is a schematic diagram of the three-dimensional structure of the jacking pipe of the jacking expansion joint in Fig. 5, which is the second embodiment at this time;

Fig. 19 is a sectional view of the jacking pipe in Fig. 18 along line K-K;

Fig. 20 is a detailed enlarged schematic diagram of the L area of the pipe jacking in Fig. 19;

Fig. 21 is a schematic cross-sectional view of the pipe jacking in Fig. 18;

FIG. 22 is an enlarged schematic view of the details of the M area of the schematic cross-sectional view of the pipe jacking in FIG. 21;

in,

1. Top expansion joint; 2. Flange jacket; 20. Flange sleeve; 201. Compensation groove; 21. First flange ring disc; 22. Second flange ring disc; 221. First sealing ring groove ;3, pipe jacking; 31, main body of jacking cylinder; 32, flange of jacking cylinder; 33, second sealing ring groove; 34, sealing ring protrusion; 4, expansion tube; 41, expansion cylinder; 42, expansion card Ring; 43, expansion joint flanging; 44, anti-slip tooth protrusion; 45, expansion joint; 5, sealing ring.

detailed description

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

As shown in Figures 1 to 15, the jacking expansion joint 1 includes a flange casing 2, a separable expansion tube 4 and a separable jacking tube 3 are arranged inside the flange casing 2, and the flange casing 2 Contains a cylindrical flange sleeve 20, the head of the flange sleeve 20 is provided with an annular first flange ring 21, and the tail of the flange sleeve 20 is provided with an annular second flange ring Disk 22, the outer side of the second flange ring disk 22 is provided with an annular first sealing ring groove 221, the expansion tube 4 includes a cylindrical expansion cylinder 41, and the top of the expansion cylinder 41 is provided with a Annular expansion joint snap ring 42, the size of the expansion joint cylinder 41 is larger than the expansion joint snap ring 42, the bottom of the expansion joint cylinder 41 is provided with an expansion joint flange 43, and the outer wall of the expansion joint cylinder 41 is provided with There is an anti-skid tooth protrusion array composed of anti-slip tooth protrusions 44. The push tube 3 includes a cylindrical top tube main body 31. The tail of the top tube main body 31 is provided with a top tube flange 32. The top tube flange 32 An annular second sealing ring groove 33 is provided on the inner wall, and a sealing ring 5 is respectively arranged in the first sealing ring groove 221 and the second sealing ring groove 33 .

An array of expansion joints 45 is provided on the side wall of the expansion joint cylinder 41 . The expansion joint 45 can effectively reduce the force required for the jacking of the pipe 3, which is convenient for on-site construction.

As shown in Figure 16 and Figure 17, it is the second embodiment of the flange casing of the expansion joint. At this time, a plurality of compensation grooves 201 are provided on the inner wall of the flange casing. The outer wall of the flexible pipe 6 can be squeezed into the compensation groove 201, which can absorb the reasonable tolerance of the wall thickness of the pipe 6, and the jacking operation of the pipe 3 is easy and easy to construct.

As shown in Fig. 18 to Fig. 22, it is the second embodiment of the jacking pipe of the jacking expansion joint. As shown in FIG. 22 , an annular sealing ring protrusion 34 is provided on the edge of the top cylinder flange 32 of the jacking pipe 3 , and the sealing ring protrusion 34 cooperates with the expansion flange 43 of the expansion tube 4 . Since the expansion flange 43 of the expansion tube 4 is wrapped by the sealing ring protrusion 34, the sealing performance of the top expansion joint 1 is further improved.

When in use, as shown in Figure 3 and Figure 4, the user first installs the sealing ring 5 in the first sealing ring groove 221 of the flange casing 2, and the pipe 6 to be connected is sleeved to the expansion cylinder 41 of the expansion tube 4 Then insert the entire expansion tube 4 into the flange sleeve 20 of the flange outer casing 2. Next, install the sealing ring 5 in the second sealing ring groove 33 of the jacking pipe 3, and insert the head of the jacking pipe 3 into the expanding cylinder 41 of the expanding tube 4, and use an external extruding device to seal the entire The pipe jacking 3 is pushed into the expansion joint cylinder 41. At this time, the anti-slip tooth protrusion 44 tightly buckles the inner wall of the pipe 6, thus completing the installation of the entire pipe joint. Due to the use of top pressure connection, the fixing is firm and reliable, the sealing is good, the installation is convenient, and it is not easy to leak. In addition, the anti-slip tooth protrusions 44 can effectively prevent the pipe 6 from slipping, and the effect is obvious.

It is not limited thereto, and any change or replacement that is not thought of through creative work shall be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (5)

1. The top expansion type joint is characterized in that the top expansion type joint (1) comprises a flange outer sleeve (2), a separable expansion pipe (4) and a separable top pipe (3) are arranged in the flange outer sleeve (2), the flange outer sleeve (2) comprises a cylindrical flange sleeve (20), the head of the flange sleeve (20) is provided with an annular first flange ring disc (21), the tail of the flange sleeve (20) is provided with an annular second flange ring disc (22), the outer side of the second flange ring disc (22) is provided with an annular first sealing ring groove (221), the expansion pipe (4) comprises a cylindrical expansion connecting cylinder (41), the top of the expansion connecting cylinder (41) is provided with an annular expansion connecting clamping ring (42), and the size of the expansion connecting cylinder (41) is larger than the expansion connecting clamping ring (42), the bottom of expanded joint drum (41) be equipped with one expanded joint turn-ups (43), the outer wall of expanded joint drum (41) on be equipped with one by anti-skidding odontoid array of antiskid odontoid (44) constitution, push pipe (3) contain a cylindric top cylinder main part (31), the afterbody of top cylinder main part (31) be equipped with a top cylinder turn-ups (32), first sealed annular (221) in be equipped with a sealing washer (5).

2. The top-expansion joint according to claim 1, wherein the inner wall of the top barrel flange (32) is provided with an annular second sealing ring groove (33), and the second sealing ring groove (33) is internally provided with another sealing ring (5).

3. The top-expansion joint according to claim 1, wherein the edge of the top barrel flange (32) is provided with an annular sealing ring protrusion (34), and the sealing ring protrusion (34) is matched with the expansion joint flange (43) of the expansion pipe (4).

4. A top-expansion joint according to claim 2 or 3, wherein the expansion cylinder (41) is provided with an array of expansion joints (45) on its side wall.

5. A top-expansion joint according to claim 2 or 3, wherein the flange sleeve (20) is provided with an array of compensating grooves (201) on its inner wall.