A pipeline pressure opening branch device

Abstract

The present invention discloses a pipeline pressure opening branch device, including a pressure pipe body, a lower saddle, an upper saddle, a pipeline sealing gasket, a gate knife, a nut and a flow-cutting sealing ring. The outer side of the upper saddle is provided with a long waist-shaped gate knife insertion groove, and the center of the upper saddle is provided with a through hole. The inside of the through hole is provided with internal threads, an annular flow-cutting sealing groove and a pipeline sealing groove matched with the pipeline sealing gasket from top to bottom. The gate knife insertion groove is connected with the flow-cutting sealing groove, and the gate knife insertion groove corresponds to the position of the flow-cutting sealing groove. The two sides of the lower part of the upper saddle are provided with mounting bosses, and the bolt ends at 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 pipeline sealing gasket can be set into a U-shaped structure, the outer part of the upper part of the pipeline sealing gasket cooperates with the pipeline sealing groove, and the inner side of the upper part of the pipeline sealing groove cooperates with the inner wall of the through hole. Compared with the traditional sealing gasket, the sealing effect is better and can play a leak-proof role even under a larger pressure.

Description

Technical Field

[0001] The invention relates to the technical field of pressure-opening holes, and in particular to a pipeline pressure-opening hole branching device. Background Art

[0002] A gate valve needs to be installed when drilling a hole under pressure in a pipeline. For example, the patent No. 201820344996.1 discloses a method for drilling a hole in a pipeline. The gate valve controls the flow of fluids inside the pipeline and the branch pipeline during the process of drilling a hole under pressure, and is the key to drilling a hole under pressure. Because the gate valve has a certain length, the drilling machine needs to pass through the gate valve to drill a hole in the pipeline. However, the existing technology wastes a lot of materials, and the drilling stroke is long, which is not conducive to the operation of the drilling machine spindle.

[0003] US Patent 3420261 also proposes an open hole flow divider.

[0004] However, the shut-off sealing system used in this technical solution has many structural components, and is not convenient to install and use.

[0005] Patent CN201320073611.X also proposes a pipeline hole opening device with a gate valve, but it is only a combination of the pipeline hole opening device and the gate valve. Summary of the invention

[0006] The object of the present invention is to provide a pipeline pressure opening branching device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A pipeline pressure opening branch device, comprising a pressure pipe body, a lower saddle, an upper saddle, a pipeline sealing gasket, a gate knife, a nut and a flow-cutting sealing ring, wherein a long waist-shaped gate knife insertion groove is arranged on the outer side of the upper saddle, a through hole is arranged in the center of the upper saddle, and an internal thread, an annular flow-cutting sealing groove and a pipeline sealing groove matched with the pipeline sealing gasket are arranged in sequence from top to bottom inside the through hole, the gate knife insertion groove is connected with the flow-cutting sealing groove, and the gate knife insertion groove corresponds to the position of the flow-cutting sealing groove;

[0009] The lower part of the upper saddle is provided with mounting bosses on both sides, the bolt ends at the two tops of the lower saddle pass through the mounting bosses and form a locking structure with nuts, and the pressure pipe body passes through the annular structure formed by the lower saddle and the upper saddle;

[0010] The bottom of the upper saddle cooperates with the arc outer wall of the pressurized pipe body, and the pipeline sealing gasket is located between the upper saddle and the pressurized pipe body to form a sealing fit;

[0011] The intercepting sealing ring is located in the intercepting sealing groove, and the intercepting sealing ring and the intercepting sealing groove are interference fit;

[0012] The gate knife passes through the gate knife insertion groove and extends into the through hole, and cooperates with the intercepting sealing ring to form a sealing structure.

[0013] Furthermore, the shut-off sealing ring includes a guide surface located at the upper outer portion, a sealing lip located at the top end and a retreat groove located at the inner side, and the sealing lip cooperates with the gate knife seal.

[0014] Furthermore, an inner lining frame is provided on the inner side of the intercepting sealing ring, and the top end of the inner lining frame is lower than the bottom of the retreat groove.

[0015] Furthermore, an outer sealing groove with an annular structure is provided on the outer wall of the upper saddle corresponding to the gate knife insertion groove, and the outer sealing groove is provided with a clamp and a sealing gasket located on the inner side of the clamp.

[0016] Furthermore, the cross section of the sealing gasket at the position corresponding to the gate blade insertion groove is a T-shaped structure, and the protruding portion extends into the gate blade insertion groove.

[0017] Furthermore, 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.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the pipe sealing gasket can be arranged into a U-shaped structure, the outer part of the upper part of the pipe sealing gasket cooperates with the pipe sealing groove, and the inner side of the upper part of the pipe sealing groove cooperates with the inner wall of the through hole. Compared with the traditional sealing gasket, the sealing effect is better and can play a leak-proof role even under greater pressure.

[0020] The gate knife can be inserted into the through hole through the gate knife insertion groove. When inserted, it first contacts the guide surface on the intercepting sealing ring. After further pressure is applied, the gate knife will press the sealing lip on the intercepting sealing ring until the sealing lip and the gate knife seal cooperate. Since a retreat groove is provided below the sealing lip and on the inner side of the intercepting sealing ring, the sealing lip deforms downward after being compressed, which can reduce the resistance of the gate knife insertion on the one hand; on the other hand, it can prevent the intercepting sealing ring from being moved out of the intercepting sealing groove due to a large force, thereby avoiding leakage problems when the gate knife is inserted into the through hole.

[0021] When the gate knife is pulled out, the sealing lip can rebound quickly to close the intercepting sealing groove and the gate knife insertion groove to prevent the fluid in the pressurized pipe body from leaking.

[0022] In order to improve the deformation resistance of the intercepting sealing ring and prevent the intercepting sealing ring from moving out of the intercepting sealing groove due to a large force, an inner lining frame can be provided on the inner side of the intercepting sealing ring, and the top of the inner lining frame is lower than the bottom of the retreat groove. The intercepting sealing ring is supported by the inner lining frame so that it is close to the inner wall of the intercepting sealing groove.

[0023] As a safety measure, a clamp and a sealing gasket may be provided on the outer sealing groove at the upper saddle and corresponding to the outer wall of the gate knife insertion groove to further prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of a pipeline pressure opening branch device;

[0025] Figure 2 It is an assembly drawing of a pipeline pressure opening branch device;

[0026] Figure 3 A top view of a pipeline pressure opening branching device;

[0027] Figure 4 for Figure 3 Full section view at AA in the middle;

[0028] Figure 5 It is a schematic diagram of the assembly structure of an upper saddle and a shutoff sealing ring in a branch device for opening a hole under pressure in a pipeline;

[0029] Figure 6 The present invention is a schematic diagram of the structure of a flow-cutting sealing ring in a branch device for opening a hole under pressure in a pipeline.

[0030] In the figure: 10, pressurized pipe body; 20, lower saddle; 30, upper saddle; 31, gate knife insertion groove; 32, through hole; 321, internal thread; 322, intercepting sealing groove; 323, pipeline sealing groove; 33, mounting boss; 34, external sealing groove; 341, clamp; 342, sealing gasket; 40, pipeline sealing gasket; 50, gate knife; 60, nut; 70, intercepting sealing ring; 71, guide surface; 72, sealing lip; 73, retreat groove; 74, lining frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-6 , the present invention provides a technical solution:

[0033] A pipeline pressure opening branch device comprises a pressure pipe body 10, a lower saddle 20, an upper saddle 30, a pipeline sealing gasket 40, a gate knife 50, a nut 60 and a flow-cutting sealing ring 70, a long waist-shaped gate knife insertion groove 31 is arranged on the outer side of the upper saddle 30, a through hole 32 is arranged at the center of the upper saddle 30, and an internal thread 321, an annular flow-cutting sealing groove 322 and a pipeline sealing groove 323 matched with the pipeline sealing gasket 40 are arranged in sequence from top to bottom inside the through hole 32, the gate knife insertion groove 31 is connected with the flow-cutting sealing groove 322, and the gate knife insertion groove 31 corresponds to the position of the flow-cutting sealing groove 322;

[0034] Mounting bosses 33 are provided on both sides of the lower part of the upper saddle 30, and the bolt ends at 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 pressure pipe body 10 passes through the annular structure formed by the lower saddle 20 and the upper saddle 30;

[0035] The bottom of the upper saddle 30 cooperates with the arc outer wall of the pressurized pipe body 10, and the pipe sealing gasket 40 is located between the upper saddle 30 and the pressurized pipe body 10 to form a sealing fit;

[0036] The intercepting sealing ring 70 is located in the intercepting sealing groove 322, and the intercepting sealing ring 70 and the intercepting sealing groove 322 are interference fit;

[0037] The gate knife 50 extends into the through hole 32 through the gate knife insertion groove 31 and cooperates with the intercepting sealing ring 70 to form a sealing structure.

[0038] Mounting bosses 33 are provided on both sides of the bottom of the upper saddle 30, and a through hole is provided in the center of the mounting boss 33, so that the lower saddle 20 can 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 threadedly connected and fixed with nuts 60, so that the upper saddle 30 is tightly connected to the pressurized pipe body 10, and cooperates with the pipe sealing gasket 40 to form a sealed connection structure.

[0039] Among them, the pipe sealing gasket 40 can be set into a U-shaped structure, the outer part of the upper part of the pipe sealing gasket 40 (located on the outside of the recessed part of the top surface) cooperates with the pipe sealing groove 323, and the inner side of the upper part of the pipe sealing groove 323 cooperates with the inner wall of the through hole 32. Compared with the traditional sealing gasket, the sealing effect is better and can play a leak-proof role even under greater pressure.

[0040] The lower part of the upper saddle 30 is an arc surface, and matches the outer circle size of the pressurized pipe body 10 . The pipe sealing groove 323 is located at the intersection of the through hole 32 and the bottom surface of the upper saddle 30 , and opens downward. The pipe sealing groove 323 is sealed with the pipe sealing gasket 40 .

[0041] A flow interception sealing ring 70 is installed in the flow interception sealing groove 322 , and the height of the flow interception sealing ring 70 is slightly higher than that of the flow interception sealing groove 322 , so that the flow interception sealing ring 70 prevents the fluid in the pressurized pipe body 10 from leaking outward through the gate knife insertion groove 31 .

[0042] The gate knife 50 can be inserted into the through hole 32 through the gate knife insertion groove 31. When inserted, it first contacts the guide surface 71 on the intercepting sealing ring 70. After further pressure is applied, the gate knife 50 will press the sealing lip 72 on the intercepting sealing ring 70 until the sealing lip 72 and the gate knife 50 are sealed. Since a retreat groove 73 is provided below the sealing lip 72 and on the inner side of the intercepting sealing ring 70, when the sealing lip 72 is compressed and deformed downward, on the one hand, the resistance to the insertion of the gate knife 50 can be reduced; on the other hand, it can prevent the intercepting sealing ring 70 from being subjected to a large force and moving out of the intercepting sealing groove 322, thereby avoiding leakage when the gate knife 50 is extended into the through hole 32.

[0043] When the gate knife 50 is pulled out, the sealing lip 72 can rebound quickly to seal the intercepting sealing groove 322 and the gate knife insertion groove 31 to prevent the fluid in the pressurized pipe body 10 from leaking.

[0044] In order to improve the deformation resistance of the intercepting sealing ring 70 and prevent the intercepting sealing ring 70 from being moved out of the intercepting sealing groove 322 due to a large force, an inner lining frame 74 can be provided on the inner side of the intercepting sealing ring 70, and the top of the inner lining frame 74 is lower than the bottom of the retreat groove 73. The intercepting sealing ring 70 is supported by the inner lining frame 74 so that it is close to the inner wall of the intercepting sealing groove 322.

[0045] As a safety measure, an outer sealing groove 34 with an annular structure may be provided on the upper saddle 30 and on the outer wall corresponding to the gate knife insertion groove 31. The outer sealing groove 34 is provided with a clamp 341 and a sealing gasket 342 located on the inner side of the clamp 341. The cross-section of the sealing gasket 342 at the position corresponding to the gate knife insertion groove 31 is a T-shaped structure, and the protruding part extends into the gate knife insertion groove 31, thereby further preventing leakage.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline pressure opening branching device, comprising a pressure pipe body (10), a lower saddle (20), an upper saddle (30), a pipeline sealing gasket (40), a gate knife (50), a nut (60) and a shutoff sealing ring (70), characterized in that: The outer side of the upper saddle (30) is provided with a long waist-shaped gate knife insertion groove (31), the center of the upper saddle (30) is provided with a through hole (32), the interior of the through hole (32) is provided with an internal thread (321), an annular intercepting sealing groove (322) and a pipeline sealing groove (323) matched with a pipeline sealing gasket (40) in sequence from top to bottom, the gate knife insertion groove (31) is connected with the intercepting sealing groove (322), and the gate knife insertion groove (31) corresponds to the location of the intercepting sealing groove (322); The upper saddle (30) is provided with mounting bosses (33) on both sides of the lower part, the bolt ends at the two top parts of the lower saddle (20) pass through the mounting bosses (33) and form a locking structure with nuts (60), and the pressure 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) cooperates with the arc outer wall of the pressurized pipe body (10), and the pipe sealing gasket (40) is located between the upper saddle (30) and the pressurized pipe body (10) to form a sealing fit; The intercepting sealing ring (70) is located in the intercepting sealing groove (322), and the intercepting sealing ring (70) and the intercepting sealing groove (322) are interference fit; The gate knife (50) passes through the gate knife insertion groove (31) and extends into the interior of the through hole (32), and cooperates with the intercepting sealing ring (70) to form a sealing structure.

2. A pipeline pressure opening branching device according to claim 1, characterized in that: The shutoff sealing ring (70) comprises a guide surface (71) located at an upper outer portion, a sealing lip (72) located at a top end, and a retreat groove (73) located at an inner side, wherein the sealing lip (72) is in sealing cooperation with the gate knife (50).

3. A pipeline pressure opening branching device according to claim 2, characterized in that: An inner lining frame (74) is provided on the inner side of the intercepting sealing ring (70), and the top end of the inner lining frame (74) is lower than the bottom end of the retreat groove (73).

4. A pipeline pressure opening branching device according to any one of claims 1 to 3, characterized in that: An outer sealing groove (34) with an annular structure is provided on the outer wall of the upper saddle (30) and corresponding to the gate knife insertion groove (31), and a clamp (341) and a sealing gasket (342) located inside the clamp (341) are provided on the outer sealing groove (34).

5. A pipeline pressure opening branching device according to claim 4, characterized in that: The cross section of the sealing gasket (342) at the position corresponding to the gate blade insertion groove (31) is a T-shaped structure, and the protruding portion extends into the gate blade insertion groove (31).

6. A pipeline pressure opening branching device according to claim 4, characterized in that: The cross section of the pipeline sealing gasket (40) is a U-shaped structure, and the pipeline sealing gasket (40) is clamped with the pipeline sealing groove (323).

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