Splicing type lining oil pipe

Abstract

The utility model discloses a splicing type lining oil pipe, which relates to the field of lining oil pipes and comprises an alloy outer sleeve, a lining hose is arranged in the alloy outer sleeve, a plurality of gluing grooves are formed in the inner wall of the alloy outer sleeve in a penetrating manner, glue injection holes are formed in the positions, close to the two sides, of the top end of the alloy outer sleeve in a penetrating manner; glue injection grooves are formed in the positions, close to the two sides, of the inner wall of the alloy outer sleeve and located on the outer ring of the multiple gluing grooves, flange connecting pieces are fixedly welded to the positions, close to the two sides, of the outer ring of the alloy outer sleeve, outer sealing rings are arranged on one sides of the flange connecting pieces, and inner sealing rings are arranged on the inner rings of the outer sealing rings. Through the arrangement of the glue injection hole, the gluing groove and the glue injection groove, the alloy outer sleeve can be recycled conveniently, the replacement cost is reduced, meanwhile, the outer sealing ring and the inner sealing ring are arranged, the inner pipeline and the outer pipeline can be sealed independently, and the sealing performance of the two spliced lining oil pipes after butt joint is improved.

Description

Technical Field

[0001] The utility model relates to the field of inner-lined oil pipes, in particular to a spliced ​​inner-lined oil pipe. Background Art

[0002] Lined oil pipe is a pipeline component used in pipeline systems to protect the inside of the pipeline system from corrosion and other damage and extend the service life of the pipeline system. It is usually composed of two parts: an outer sleeve and an inner liner. The material of the outer sleeve is mostly hard alloy to improve the pressure resistance of the lined oil pipe, and the inner liner is made of corrosion-resistant material, such as polyurethane, polytetrafluoroethylene or other corrosion-resistant metal composites. The present scheme specifically relates to a spliced ​​lined oil pipe; the outer sleeve and the inner liner of the existing lined oil pipe are connected as one piece. When the inner liner is damaged, it is troublesome to peel it off, and it is not convenient to disassemble the damaged liner for replacement. In addition, the inner and outer pipelines use the same sealing element, and the sealing performance of the pipelines after docking is poor. Utility Model Content

[0003] The main purpose of the utility model is to provide a spliced ​​lined oil pipe, which can effectively solve the technical problem that the outer sleeve and the inner liner pipe of the existing lined oil pipe in the background technology are connected as one piece, it is troublesome to peel off the inner liner pipe when it is damaged, it is not convenient to disassemble the damaged inner liner pipe for replacement, and the inner and outer pipelines use the same sealing element, resulting in poor sealing after the pipelines are connected.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A spliced ​​lined oil pipe comprises an alloy outer casing, an inner lining hose is arranged inside the alloy outer casing, a plurality of adhesive grooves are opened through the inner wall of the alloy outer casing, glue injection holes are opened through the top of the alloy outer casing on both sides, and glue injection grooves are opened through the inner wall of the alloy outer casing on both sides and located on the outer circles of the plurality of adhesive grooves.

[0006] As a further solution of the utility model, flange connectors are fixedly welded on both sides of the outer ring of the alloy outer sleeve.

[0007] As a further solution of the utility model, an outer sealing ring is provided on one side of the flange connection piece, and an inner sealing ring is provided inside the inner ring of the outer sealing ring.

[0008] As a further solution of the utility model, the glue injection hole is connected to the glue injection groove, the glue injection groove is connected to the adhesive groove, and the side view cross section of the glue injection groove is annular.

[0009] As a further solution of the utility model, the outer sealing ring is clamped with one side of the liner hose, and the inner sealing ring is clamped with the outer sealing ring.

[0010] As a further solution of the utility model, the top view of the lining hose is arranged in an "I" shape, and the lining hose is sleeved with the alloy outer sleeve.

[0011] As a further solution of the present invention, the inner sealing ring has the same thickness as the outer sealing ring, and the lining hose includes a straight pipe and a limiting ring fixedly installed at both ends of the straight pipe, wherein the inner diameter and outer diameter of the limiting ring are equal to the inner diameter and outer diameter of the inner sealing ring, and the thickness of the limiting ring is equal to half the thickness of the outer sealing ring.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a glue injection hole, an adhesive groove and a glue injection groove, and hot melt glue is injected into one of the glue injection holes. When the hot melt glue flows out from the other glue injection hole, the glue injection is stopped. During the flow of the hot melt glue, the hot melt glue flows into the glue injection groove through the glue injection hole, and then flows into the adhesive groove through the glue injection groove. After that, the hot melt glue spreads to the gap between the alloy outer sleeve and the inner lining hose, and adheres the inner lining hose to the alloy outer sleeve, which is convenient for splicing the inner lining hose and the alloy outer sleeve. When the inner lining hose is damaged, the alloy outer sleeve is heated to melt the hot melt glue, and the inner lining hose can be pulled out for replacement, which is convenient for recycling the alloy outer sleeve and reducing the replacement cost. At the same time, an outer sealing ring and an inner sealing ring are provided, and the joint of the flange connector can be sealed by pressing the outer sealing ring by the flange connector, and the joint of the inner lining hose can be sealed by pressing the inner sealing ring by the inner lining hose, which is convenient for independently sealing the inner and outer pipelines, and improves the sealing performance of the two spliced ​​inner lining oil pipes after docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a spliced ​​inner-lined oil pipe of the utility model;

[0015] Figure 2 This is a diagram of the overall structure of a spliced ​​inner-lined oil pipe of the utility model;

[0016] Figure 3 This is a structural schematic diagram of an alloy outer sleeve in a spliced ​​inner-lined oil pipe of the utility model;

[0017] Figure 4 This is a structural disassembly diagram of an alloy outer sleeve and an inner lining hose in a spliced ​​inner lining oil pipe of the utility model.

[0018] In the figure: 1. Alloy outer sleeve; 2. Flange connection; 3. Lined hose; 4. Outer sealing ring; 5. Inner sealing ring; 6. Glue injection hole; 7. Glue groove; 8. Glue injection groove. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-Figure 4 As shown, a spliced ​​lined oil pipe includes an alloy outer casing 1, an inner lining hose 3 is arranged inside the alloy outer casing 1, a plurality of adhesive grooves 7 are opened through the inner wall of the alloy outer casing 1, glue injection holes 6 are opened on both sides of the top of the alloy outer casing 1, and glue injection grooves 8 are opened through the inner wall of the alloy outer casing 1 on both sides and located on the outer circles of the plurality of adhesive grooves 7.

[0021] The outer ring of the alloy outer sleeve 1 is fixedly welded with flange connectors 2 on both sides. The flange connectors 2 are provided to facilitate the butt connection of two alloy outer sleeves 1. At the same time, the flange connectors 2 are provided to facilitate the fixing of the outer sealing ring 4 to improve the sealing performance.

[0022] An outer sealing ring 4 is provided on one side of the flange connector 2, and an inner sealing ring 5 is provided on the inner ring of the outer sealing ring 4. The outer sealing ring 4 and the inner sealing ring 5 are provided to enhance the sealing performance of the spliced ​​lined oil pipe when it is connected to an external device or to another spliced ​​lined oil pipe.

[0023] The glue injection hole 6 is connected with the glue injection groove 8, and the glue injection groove 8 is connected with the adhesive groove 7. The side cross-section of the glue injection groove 8 is annular. Hot melt glue is injected into one of the glue injection holes 6. After the hot melt glue flows into the glue injection groove 8, it flows into the adhesive groove 7 through the glue injection groove 8. Then the hot melt glue spreads to the gap between the alloy outer sleeve 1 and the lining hose 3, and the lining hose 3 is adhered to the alloy outer sleeve 1, completing the splicing of the alloy outer sleeve 1 and the lining hose 3.

[0024] The outer sealing ring 4 is clamped with one side of the lining hose 3, and the inner sealing ring 5 is clamped with the outer sealing ring 4. When the spliced ​​lining oil pipes are butt-jointed with each other, the two flange connectors 2 press the outer sealing ring 4, and the joint of the flange connector 2 is sealed by the outer sealing ring 4. Then, the inner sealing ring 5 is pressed by the lining hose 3, and the joint of the lining hose 3 is sealed by the inner sealing ring 5. The alloy outer sleeve 1 and the lining hose 3 are separately sealed by the inner sealing ring 5 and the outer sealing ring 4, thereby improving the sealing performance of the spliced ​​lining oil pipes after butt-jointing.

[0025] The top view of the lining hose 3 is in an "I" shape, and the lining hose 3 is connected to the alloy outer sleeve 1. The lining hose 3 is fixed to the inner wall of the alloy outer sleeve 1 by hot melt adhesive. When the alloy outer sleeve 1 is heated, the hot melt adhesive melts, which makes it easy to peel off the lining hose 3, and then recover the alloy outer sleeve 1, so as to facilitate the replacement of the new lining hose 3.

[0026] The thickness of the inner sealing ring 5 is the same as that of the outer sealing ring 4. The lining hose 3 includes a straight pipe and a limiting ring fixedly installed at both ends of the straight pipe, wherein the inner diameter and outer diameter of the limiting ring are equal to the inner diameter and outer diameter of the inner sealing ring 5, and the thickness of the limiting ring is equal to half of the thickness of the outer sealing ring 4. When the inner sealing ring 5 is used to seal the lining hose 3, the inner sealing ring 5 contacts the limiting ring to avoid the formation of a height difference between the inner wall of the lining hose 3 and the inner wall of the inner sealing ring 5, thereby increasing the resistance encountered when the liquid flows.

[0027] It should be noted that the utility model is a spliced ​​lining oil pipe. When in use, first insert the lining hose 3 into the alloy outer casing 1, and fill the lining hose 3 with a cylinder with a diameter equal to the inner diameter of the lining hose 3, and at the same time, press the two sides of the lining hose 3 onto the flange connector 2, and then inject hot melt glue into one of the glue injection holes 6. When the hot melt glue flows out from the other glue injection hole 6, stop injecting glue. During the flow of the hot melt glue, the hot melt glue flows into the glue injection groove 8 through the glue injection hole 6, and then flows into the adhesive groove 7 through the glue injection groove 8. Then, the hot melt glue spreads to the gap between the alloy outer casing 1 and the lining hose 3, and the lining hose 3 is adhered to the alloy outer casing 1, completing the splicing of the alloy outer casing 1 and the lining hose 3.

[0028] After the hot melt adhesive solidifies, pull out the cylinder filled with the lining hose 3, connect the two spliced ​​lining oil pipes end to end, press the outer sealing ring 4 through the two flange connectors 2, and press the inner sealing ring 5 through the two lining hoses 3, and then connect the two flange connectors 2 through external bolts and nuts to complete the docking of the two spliced ​​lining oil pipes;

[0029] When the lining hose 3 is damaged, the alloy outer sleeve 1 is heated to melt the hot melt adhesive inside, and the lining hose 3 can be pulled out. After cleaning the hot melt adhesive, the alloy outer sleeve 1 is recycled and a new lining hose 3 is installed to obtain a new spliced ​​lining oil pipe for use.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A spliced ​​lined oil pipe, characterized in that: The invention comprises an alloy outer sleeve (1), wherein an inner lining hose (3) is arranged inside the alloy outer sleeve (1), a plurality of adhesive grooves (7) are provided through the inner wall of the alloy outer sleeve (1), glue injection holes (6) are provided through the top of the alloy outer sleeve (1) on both sides, and glue injection grooves (8) are provided through the inner wall of the alloy outer sleeve (1) on both sides and located on the outer ring of the plurality of adhesive grooves (7).

2. The spliced ​​lined oil pipe according to claim 1, characterized in that: The outer ring of the alloy outer sleeve (1) is fixedly welded with flange connectors (2) on both sides.

3. The spliced ​​lined oil pipe according to claim 2, characterized in that: An outer sealing ring (4) is arranged on one side of the flange connection piece (2), and an inner sealing ring (5) is arranged inside the inner ring of the outer sealing ring (4).

4. The spliced ​​lined oil pipe according to claim 1, characterized in that: The glue injection hole (6) is connected to the glue injection groove (8), and the glue injection groove (8) is connected to the adhesive groove (7). The side view cross section of the glue injection groove (8) is arranged in a ring shape.

5. The spliced ​​lined oil pipe according to claim 3, characterized in that: The outer sealing ring (4) is clamped with one side of the lining hose (3), and the inner sealing ring (5) is clamped with the outer sealing ring (4).

6. The spliced ​​lined oil pipe according to claim 1, characterized in that: The inner lining hose (3) is arranged in an "I" shape when viewed from above, and the inner lining hose (3) is sleeved with the alloy outer sleeve (1).

7. The spliced ​​lined oil pipe according to claim 3, characterized in that: The inner sealing ring (5) has the same thickness as the outer sealing ring (4), and the lining hose (3) comprises a straight pipe and a limiting ring fixedly installed at both ends of the straight pipe, wherein the inner diameter and outer diameter of the limiting ring are equal to the inner diameter and outer diameter of the inner sealing ring (5), and the thickness of the limiting ring is equal to half the thickness of the outer sealing ring (4).

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