CN111594696A - Pipeline pressure tapping branching device - Google Patents

Abstract

The invention discloses a pipe press-opening branching device, which comprises a press-pressed pipe body, a lower saddle, an upper saddle, a pipe sealing gasket, a gate knife, a nut and a shut-off sealing ring. The outer side of the upper saddle is provided with a long-waisted gate The knife is inserted into the groove, and the center of the upper saddle is provided with a through hole, and the inside of the through hole is sequentially provided with an internal thread, an annular shut-off sealing groove and a pipe sealing groove matched with the pipe gasket. The sealing groove is connected, the knife insertion groove corresponds to the position of the shutoff sealing groove, the lower part of the upper saddle is provided with mounting bosses on both sides, and the bolt ends of the two tops of the lower saddle pass through the mounting bosses and form a locking structure with the nut. In the present invention, the pipe sealing gasket can be arranged in a U-shaped structure, the outer part of the upper part of the pipe sealing gasket is matched with the pipe sealing groove, and the inner side of the upper part of the pipe sealing groove is matched with the inner wall of the through hole. Compared with the traditional sealing gasket, the sealing effect is better. Well, it can also play a leak-proof role under greater pressure.

Description

A branching device for piping with pressure openings

technical field

The invention relates to the technical field of perforation under pressure, in particular to a branching device for perforation under pressure in a pipeline.

Background technique

A gate valve needs to be installed for the opening of the pipeline under pressure. For example, the patent of 201820344996.1 discloses the method of opening the pipeline. The gate valve controls the opening and closing of the fluid inside the pipeline and the branch pipeline during the process of opening the pipeline under pressure. The key to opening the hole. Because the gate valve has a certain length, the drilling machine needs to pass through the gate valve to open the pipeline. However, the existing technology wastes a lot of materials, and at the same time, the drilling stroke is long, which is not conducive to the work of the main shaft of the drilling machine.

US Patent 3,420,261 also proposes an open-hole diverter.

However, the shut-off sealing system adopted in this technical solution has many structural components, which is not convenient for installation and use.

The patent of CN201320073611.X also proposes a pipeline opening device with a gate valve, but it is only a combination of the pipeline opening device and the gate valve.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a pipe press-opening branch device to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention provides the following technical solutions:

A pipe press-opening branch device, comprising a press-pressed pipe body, a lower saddle, an upper saddle, a pipe gasket, a guillotine, a nut and a shut-off sealing ring, and the outer side of the upper saddle is provided with a long-waisted guillotine insert. The center of the upper saddle is provided with a through hole, and the inside of the through hole is sequentially provided with an internal thread, an annular shut-off sealing groove and a pipe sealing groove matched with a pipe sealing gasket from top to bottom. The insertion groove is communicated with the shut-off sealing groove, and the blade insertion groove corresponds to the position of the shut-off sealing groove;

There are mounting bosses on both sides of the lower part of the upper saddle, the bolt ends of the two tops of the lower saddle pass through the mounting bosses and form a locking structure with the nut, and the pressurized pipe body passes through the lower saddle and the upper saddle. ring structure;

The bottom of the upper saddle is matched with the arc outer wall of the pressurized pipe body, and the pipe gasket is located between the upper saddle and the pressurized pipe body to form a sealing fit;

The shut-off seal ring is located in the shut-off seal groove, and the shut-off seal ring and the shut-off seal groove are in interference fit;

The blade is inserted into the through hole through the blade insertion slot, and cooperates with the shut-off sealing ring to form a sealing structure.

Further, the shut-off sealing ring includes a guide surface located on the upper part of the outer side, a sealing lip located at the top end and a relief groove located on the inner side, and the sealing lip is in sealing cooperation with the guillotine knife.

Further, an inner lining frame is arranged on the inner side of the shut-off sealing ring, and the top end of the inner lining frame is lower than the bottom of the escape groove.

Further, an outer sealing groove of annular structure is provided on the outer wall of the upper saddle and corresponding to the blade insertion groove, and the outer sealing groove is provided with a clamp and a sealing gasket located on the inner side of the clamp.

Further, the cross section of the sealing gasket at the position corresponding to the blade insertion groove is a T-shaped structure, and the protruding portion extends into the blade insertion groove.

Further, the cross section of the pipe sealing gasket is a U-shaped structure, and the pipe sealing gasket is clamped with the pipe sealing groove.

Compared with the prior art, the beneficial effects of the present invention are:

In the present invention, the pipe sealing gasket can be arranged in a U-shaped structure, the outer part of the upper part of the pipe sealing gasket is matched with the pipe sealing groove, and the inner side of the upper part of the pipe sealing groove is matched with the inner wall of the through hole. Compared with the traditional sealing gasket, the sealing effect is better. Well, it can also play a leak-proof role under greater pressure.

The knife can be inserted into the through hole through the knife insertion slot. When inserting, it first touches the guide surface on the shut-off sealing ring. After further pressure is applied, the knife will press the sealing lip on the shut-off sealing ring until the sealing lip is sealed with the knife. Matching, because there is an escape groove under the sealing lip and inside the shut-off sealing ring, when the sealing lip is pressed and deformed downward, on the one hand, it can reduce the resistance of the knife insertion; on the other hand, it can prevent the shut-off sealing ring from being greatly affected It can be moved out of the shut-off sealing groove by applying force, thereby avoiding the leakage problem when the guillotine blade extends into the through hole.

When the knife is drawn out, the sealing lip can quickly rebound to seal the shut-off sealing groove and the knife insertion groove to prevent fluid leakage in the pressurized pipe body.

In order to improve the deformation resistance of the shut-off sealing ring and prevent the shut-off sealing ring from being moved out of the shut-off sealing groove by a large force, an inner lining frame can be arranged on the inner side of the shut-off sealing ring, and the top of the inner lining frame is lower than the bottom of the relief groove. , Support the shut-off sealing ring through the lining skeleton, so that it is close to the inner wall of the shut-off sealing groove.

As a safety measure, a clamp and a sealing gasket can also be arranged on the outer sealing groove of the upper saddle and corresponding to the outer wall of the groove where the knife is inserted, so as to further prevent leakage.

Description of drawings

Fig. 1 is an exploded view of a pipe press-opening branch device;

Fig. 2 is a kind of assembly drawing of the branch device of pipe press opening hole;

Fig. 3 is a top view of a pipe press-opening branch device;

Fig. 4 is a full cross-sectional view at A-A in Fig. 3;

5 is a schematic diagram of the assembly structure of an upper saddle and a shut-off sealing ring in a pipe press-opening branch device;

FIG. 6 is a schematic structural diagram of a shut-off sealing ring in a pipe press-opening branch device.

In the figure: 10. Pipe body under pressure; 20. Lower saddle; 30. Upper saddle; 31. Knife insertion slot; 32. Through hole; 321. Internal thread; , Mounting boss; 34, Outer sealing groove; 341, Clamp; 342, Seal washer; 40, Pipe gasket; 50, Knife; 60, Nut; 70, Shutoff seal; 71, Guide surface; 72, Seal Lip; 73, concession groove; 74, lining skeleton.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figures 1-6, the present invention provides technical solutions:

A pipe pressurized perforating branch device, comprising pressurized pipe body 10, lower saddle 20, upper saddle 30, pipe gasket 40, guillotine 50, nut 60 and shut-off sealing ring 70, the outer side of the upper saddle 30 is provided with a long The waist-shaped knife insert groove 31 is provided with a through hole 32 in the center of the upper saddle 30. The interior of the through hole 32 is sequentially provided with an internal thread 321, an annular shut-off sealing groove 322 from top to bottom, and is matched with the pipeline gasket 40. The pipeline sealing groove 323 is connected to the guillotine sealing groove 323, the knife insertion groove 31 is communicated with the shutoff sealing groove 322, and the guillotine knife insertion groove 31 corresponds to the position of the shutoff sealing groove 322;

Both sides of the lower part of the upper saddle 30 are provided with mounting bosses 33 , the bolt ends of the two tops of the lower saddle 20 pass through the mounting bosses 33 and form a locking structure with the nut 60 , and the pressurized pipe body 10 passes through the lower saddle 20 and the upper saddle 30 formed ring structure;

The bottom of the upper saddle 30 is matched with the arc outer wall of the pressurized pipe body 10, and the pipe gasket 40 is located between the upper saddle 30 and the pressurized pipe body 10 to form a sealing fit;

The shut-off sealing ring 70 is located in the shut-off sealing groove 322, and the shut-off sealing ring 70 is in an interference fit with the shut-off sealing groove 322;

The blade 50 extends through the blade insertion groove 31 into the interior of the through hole 32, and cooperates with the shut-off sealing ring 70 to form a sealing structure.

Both sides of the bottom of the upper saddle 30 are provided with mounting bosses 33, and the center of the mounting boss 33 is provided with a through hole, which can be used for the lower saddle 20 to form a U-shaped structure, and the bolt ends located at the two top ends of the lower saddle 20 pass through the through holes and are connected with the through holes. The nut 60 is screwed and fixed, which tightly connects the upper saddle 30 and the pressurized pipe body 10, and cooperates with the pipe gasket 40 to form a sealing connection structure.

Wherein, the pipe gasket 40 can be arranged in a U-shaped structure, the outer part of the upper part of the pipe gasket 40 (located on the outer side of the concave part of the top surface) is matched with the pipe sealing groove 323, and the inner side of the upper part of the pipe sealing groove 323 and the inner wall of the through hole 32 Compared with the traditional gasket, the sealing effect is better, and it can also play a leak-proof role under large pressure.

The lower part of the upper saddle 30 is an arc surface, which matches the outer circle size of the pressurized pipe body 10. The pipe sealing groove 323 is located at the junction of the through hole 32 and the bottom surface of the upper saddle 30, and the opening is downward. Pipe gasket 40 is a sealing fit.

A shut-off sealing ring 70 is installed in the shut-off sealing groove 322 , and the height of the shut-off sealing ring 70 is slightly higher than that of the shut-off sealing groove 322 , so that the shut-off sealing ring 70 prevents the fluid in the pressurized pipe body 10 from being inserted into the groove 31 through the guillotine knife. leak out.

The knife 50 can be inserted into the through hole 32 through the knife insertion groove 31, and firstly contacts the guide surface 71 on the shut-off sealing ring 70 when inserting. , until the sealing lip 72 is in sealing cooperation with the knife 50. Since there is an escape groove 73 below the sealing lip 72 and inside the shut-off sealing ring 70, when the sealing lip 72 is compressed and deformed downward, on the one hand, the knife 50 can be reduced. On the other hand, it can prevent the shut-off sealing ring 70 from being moved out of the shut-off sealing groove 322 by a large force, thereby avoiding the leakage problem when the knife 50 extends into the through hole 32 .

When the guillotine 50 is drawn out, the sealing lip 72 can quickly rebound to seal the shutoff sealing groove 322 and the guillotine insertion groove 31 to prevent the fluid leakage in the pressurized pipe body 10 .

In order to improve the deformation resistance of the shut-off seal ring 70 and prevent the shut-off seal ring 70 from being moved out of the shut-off seal groove 322 by a large force, an inner lining frame 74 can be provided on the inner side of the shut-off sealing ring 70, and the top of the inner lining frame 74 Below the bottom of the relief groove 73 , the shut-off sealing ring 70 is supported by the inner lining frame 74 so as to be in close contact with the inner wall of the shut-off sealing groove 322 .

For safety measures, a ring-shaped outer sealing groove 34 can also be provided on the outer wall of the upper saddle 30 and corresponding to the blade insertion groove 31 . The sealing gasket 342 has a T-shaped cross section corresponding to the position of the blade insertion groove 31 , and the protruding part extends into the blade insertion groove 31 to further prevent leakage.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A pipe pressurized perforating branch device, comprising a pressurized pipe body (10), a lower saddle (20), an upper saddle (30), a pipe gasket (40), a knife (50), and a nut (60) and a shut-off sealing ring (70), characterized in that: the outer side of the upper saddle (30) is provided with a long-waisted knife insertion groove (31), and the center of the upper saddle (30) is provided with a through hole ( 32), the interior of the through hole (32) is sequentially provided with an internal thread (321), an annular shut-off sealing groove (322) and a pipe sealing groove (323) matched with the pipe gasket (40) from top to bottom, The blade insertion groove (31) is communicated with the shut-off sealing groove (322), and the blade insertion groove (31) corresponds to the position of the shut-off sealing groove (322); Mounting bosses (33) are provided on both sides of the lower part of the upper saddle (30), and the bolt ends of the two tops of the lower saddle (20) pass through the mounting bosses (33) and form a locking structure with the nut (60), The pressurized pipe body (10) passes through the annular structure formed by the lower saddle (20) and the upper saddle (30); The bottom of the upper saddle (30) is matched with the arc outer wall of the pressurized pipe body (10), and the pipe gasket (40) is located between the upper saddle (30) and the pressurized pipe body (10) to form a sealing fit ; The shut-off sealing ring (70) is located in the shut-off sealing groove (322), and the shut-off sealing ring (70) is in an interference fit with the shut-off sealing groove (322); The blade (50) extends into the through hole (32) through the blade insertion groove (31), and cooperates with the shut-off sealing ring (70) to form a sealing structure. 2 . The branching device for piping with pressure opening according to claim 1 , wherein the shut-off sealing ring ( 70 ) comprises a guide surface ( 71 ) at the upper outer side and a sealing lip ( 72 ) at the top. 3 . and an escape groove (73) located on the inner side, the sealing lip (72) is in sealing fit with the guillotine knife (50). 3. A pipe press-opening branching device according to claim 2, characterized in that: an inner lining frame (74) is provided on the inner side of the shut-off sealing ring (70), and the inner lining frame (74) is provided with an inner lining frame (74). The top end is lower than the bottom of the relief groove (73). 4. A pipe press-opening branching device according to any one of claims 1-3, characterized in that: a ring is provided on the outer wall of the upper saddle (30) and corresponding to the blade insertion groove (31). The outer sealing groove (34) of the shape structure is provided on the outer sealing groove (34) with a clamp (341) and a sealing gasket (342) located inside the clamp (341). 5 . The branching device for pipe under pressure according to claim 4 , wherein the cross section of the sealing gasket ( 342 ) corresponding to the position where the knife is inserted into the groove ( 31 ) is a T-shaped structure, and the convex The outgoing part extends into the blade insertion slot (31). 6 . The branching device for pipe under pressure according to claim 4 , wherein the cross section of the pipe gasket ( 40 ) is a U-shaped structure, and the pipe gasket ( 40 ) is sealed with the pipe. 7 . The slot (323) is snapped.

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