Thermal compensation petroleum pipe coupling

Abstract

The utility model relates to the technical field of petroleum pipe couplings, in particular to a thermal compensation petroleum pipe coupling which comprises a coupling body, pipelines are in threaded connection with the two ends of the interior of the coupling body, connecting sleeves are fixed to the surfaces of the pipelines in a sliding and sleeved mode, and the inner sides of the connecting sleeves are connected with the two ends of the coupling body in a threaded fit mode. And a sealing ring is mounted in the connecting sleeve in a sliding manner. The device has the beneficial effects that liquid in the spiral coil is heated to a certain temperature through the electric heating wire, heating and heat preservation are conducted on the joint of the coupling and the pipeline, and the heat preservation effect is enhanced through the heat preservation sleeve, so that the joint of the coupling and the pipeline is heated and subjected to heat preservation, and the influence of day and night temperature difference is reduced; gaps or expansion cracks caused by thermal expansion and cold contraction are avoided; and the connection between the pipeline and the coupling is relatively firm, so that gaps caused by the influence of the shaking of the pipeline are not easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum pipe couplings, in particular to a thermal compensation petroleum pipe coupling. Background Art

[0002] When transporting oil, an oil pipeline is needed. Since the size of the oil pipeline is limited, a coupling pipeline for connecting the oil casing needs to be provided between each oil pipeline.

[0003] Couplings are often used to connect oil pipelines. The coupling body has internal threads that correspond to the external threads of the oil pipeline. When connecting, the oil pipeline and the coupling body are connected through threads to achieve the connection of the pipeline. This connection method is relatively fast and has better sealing. When the oil pipeline is laid in an environment with a large temperature difference between day and night or a large seasonal temperature difference, or when the oil temperature changes, the oil pipeline will expand and contract to a certain extent due to the change in temperature. At this time, it is necessary to set compensating pipe fittings at a certain distance to offset the change in the pipeline.

[0004] For example, the prior art Chinese patent publication number "CN211623352U" provides a heat-compensated oil pipeline pipe coupling structure, including an oil pipeline and an oil coupling, one end of the oil pipeline is fixedly connected with a conical screw sleeve, the inner wall of the oil coupling is fixedly connected with a threaded ring matching the conical screw sleeve, two arc-shaped clamps are provided on the oil pipeline, the side walls of the two arc-shaped clamps are fixedly connected with fixed blocks, the side walls of the fixed blocks are provided with fixing bolts, the fixing bolts pass through the two fixed blocks and are threadedly connected with fixing nuts, the side walls of the two arc-shaped clamps are fixedly connected with mounting seats, the side walls of the mounting seats are provided with locking bolts, and the side walls of the oil coupling are provided with multiple threaded grooves, and the locking bolts pass through the mounting seats and extend into the threaded grooves.

[0005] The device uses the arc clamping plate and under the restriction of the locking bolt and the fixing bolt, the oil coupling and the oil pipeline are connected more tightly together and the sealing performance is better.

[0006] The existing thermal compensation oil pipe coupling is only to set a coupling between two oil pipelines for connection. The thermal expansion and contraction caused by the temperature difference between day and night at the coupling will cause gaps or expansion cracks between the coupling and the pipeline, affecting the safe transportation of oil by the oil pipeline. At the same time, the connection between the pipeline and the coupling is not sealed and tightened stably enough. When the pipeline shakes and vibrates, gaps will appear in the connection between the two ends of the coupling and the pipeline, resulting in unstable and unsealed connection. Utility Model Content

[0007] The purpose of the utility model is to solve the problem in the prior art that the joint coupling is subjected to the temperature difference between day and night and causes thermal expansion and contraction, which may lead to gaps or expansion cracks between the coupling and the pipeline, thus affecting the safe transportation of oil by the oil pipeline, and to propose a thermal compensation oil pipe coupling.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A thermal compensation petroleum pipe coupling is designed, comprising a coupling, wherein both ends of the coupling are threadedly connected to pipelines, a sliding sleeve connected to a connecting sleeve is fixed on the surface of the pipeline, the inner side of the connecting sleeve is threadedly connected to both ends of the coupling, a sealing ring is slidably installed inside the connecting sleeve, a heat-conducting silicone sleeve is bonded to the surface of the coupling, a spiral coil is sleeved on the surface of the heat-conducting silicone sleeve, an electric heating wire is inserted into the interior of the spiral coil, the top end of one end of the spiral coil is connected to a liquid inlet pipe, the bottom end of the other end of the spiral coil is connected to a liquid outlet pipe, a temperature sensor is bonded to the bottom end of the heat-conducting silicone sleeve, and an insulation sleeve is sleeved on the outer surface of the spiral coil.

[0010] Furthermore, a first connecting flange is fixed at both ends of the coupling, a first connecting hole is opened on the surface of the first connecting flange, a second connecting flange is fixed on the surface of the pipe, a second connecting hole is opened on the surface of the second connecting flange, bolts pass through the inside of the first connecting hole and the second connecting hole, and a nut is connected to one end of the bolt.

[0011] Furthermore, the inner surface and the outer surface of the coupling are both threaded structures, the inner surface of the connecting sleeve is a threaded structure, and is threadedly connected with the two ends of the coupling, and the sealing ring is abutted against the connection between the coupling and the pipe.

[0012] Furthermore, the sealing ring is a circular ring structure, and the cross section is a triangular structure.

[0013] Furthermore, the spiral coil is spirally wrapped around the outer surface of the thermally conductive silicone sleeve, and the liquid inlet pipe and the liquid outlet pipe are respectively located at two ends of the coupling.

[0014] Furthermore, the thermal insulation sleeve is a cylindrical structure and is made of thermal insulation foam material.

[0015] Furthermore, the first connecting flanges are located at two ends of the thermal insulation sleeve and abut against the side surfaces of the connecting sleeve.

[0016] Furthermore, the second connecting flange is parallel to the first connecting flange, the first connecting hole is aligned with the second connecting hole, the second connecting flange is located on the outside of the connecting sleeve, and the nut is located on the outside of the second connecting hole.

[0017] The utility model provides a thermal compensation petroleum pipe coupling, which has the following beneficial effects:

[0018] 1. The utility model connects a coupling to the outer end of the connection of the pipeline, and arranges a heat-conducting silicone sleeve, a spiral coil and a heat-insulating sleeve on the outside of the coupling. Therefore, when the coupling and the pipeline are arranged outdoors and pass through day and night, the temperature of the surface of the coupling is detected by a temperature sensor, the liquid inside the spiral coil can be heated to a certain temperature by an electric heating wire, the connection between the coupling and the pipeline is heated and insulated, and the heat-insulating effect is enhanced by the heat-insulating sleeve. Therefore, the connection between the coupling and the pipeline is heated and insulated, the influence of the temperature difference between day and night is reduced, and the occurrence of gaps or expansion cracks due to thermal expansion and contraction is avoided. At the same time, when exposed to sunlight during the day, the heat-insulating sleeve can reduce high-temperature exposure, thereby reducing the high temperature to which the coupling and the pipeline connection are subjected.

[0019] 2. The utility model uses a connecting sleeve to fasten the connection between the coupling and the pipe, and uses a sealing ring to seal the connection. Furthermore, the pipe and the coupling are fastened and installed by a first connecting flange, a second connecting flange and bolts. Therefore, the connection between the pipe and the coupling is relatively tight and is not easily affected by the shaking of the pipe to form a gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0022] Figure 3 For this utility model Figure 1 A magnified image of point A;

[0023] Figure 4 For this utility model Figure 1 Schematic diagram of the spiral coil structure.

[0024] In the figure: 1. Coupling; 2. Insulation sleeve; 3. Spiral coil; 4. Bolt; 5. First connecting flange; 6. Connecting sleeve; 7. Second connecting flange; 8. Pipeline; 9. Liquid outlet pipe; 10. Nut; 11. Temperature sensor; 12. Liquid inlet pipe; 13. First connecting hole; 14. Second connecting hole; 15. Sealing ring; 16. Thermal conductive silicone sleeve; 17. Electric heating wire. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A heat-compensated petroleum pipe coupling shown in the figure comprises a coupling 1, wherein the inner two ends of the coupling 1 are threadedly connected with a pipe 8, the surface of the pipe 8 is fixed with a sliding sleeve connected with a connecting sleeve 6, the inner side of the connecting sleeve 6 is threadedly connected with the two ends of the coupling 1, a sealing ring 15 is slidably installed inside the connecting sleeve 6, a heat-conducting silicone sleeve 16 is bonded to the surface of the coupling 1, a spiral coil 3 is sleeved on the surface of the heat-conducting silicone sleeve 16, an electric heating wire 17 is inserted into the interior of the spiral coil 3, a liquid inlet pipe 12 is connected to the top end of one end of the spiral coil 3, a liquid outlet pipe 9 is connected to the bottom end of the other end of the spiral coil 3, a temperature sensor 11 is bonded to the bottom end of the heat-conducting silicone sleeve 16, and an insulation sleeve 2 is sleeved on the outer surface of the spiral coil 3.

[0028] By connecting the coupling 1 to the outer end of the connection of the pipeline 8, and arranging a heat-conducting silicone sleeve 16, a spiral coil 3 and an insulation sleeve 2 on the outside of the coupling 1, therefore, when the coupling 1 and the pipeline 8 are arranged outdoors and after day and night, the temperature of the surface of the coupling 1 is detected by the temperature sensor 11, the liquid inside the spiral coil 3 can be heated to a certain temperature by the electric heating wire 17, the connection between the coupling 1 and the pipeline 8 is heated and insulated, and the insulation effect is enhanced by the insulation sleeve 2. Therefore, the connection between the coupling 1 and the pipeline 8 is heated and insulated, the influence of the temperature difference between day and night is reduced, and the occurrence of gaps or expansion cracks due to thermal expansion and contraction is avoided. At the same time, when exposed to sunlight during the day, the insulation sleeve 2 reduces high temperature exposure, and reduces the high temperature of the connection between the coupling 1 and the pipeline 8.

[0029] A first connecting flange 5 is fixed at both ends of the coupling 1, a first connecting hole 13 is opened on the surface of the first connecting flange 5, a second connecting flange 7 is fixed on the surface of the pipe 8, a second connecting hole 14 is opened on the surface of the second connecting flange 7, bolts 4 pass through the first connecting hole 13 and the second connecting hole 14, and a nut 10 is connected to one end of the bolt 4.

[0030] The connection between the coupling 1 and the pipe 8 is fastened by the connecting sleeve 6 and sealed by the sealing ring 15. Moreover, the pipe 8 and the coupling 1 are fastened and installed by the first connecting flange 5, the second connecting flange 7 and the bolts 4. Therefore, the connection between the pipe 8 and the coupling 1 is relatively tight and is not easily affected by the shaking of the pipe 8 to form a gap.

[0031] The inner and outer surfaces of the coupling 1 are both threaded structures, the inner surface of the connecting sleeve 6 is a threaded structure, and is threadedly connected to the two ends of the coupling 1, and the sealing ring 15 is abutted against the connection between the coupling 1 and the pipe 8; the sealing ring 15 is a circular ring structure, and the cross-section is a triangular structure.

[0032] The spiral coil 3 is spirally wound around the outer surface of the thermally conductive silicone sleeve 16, and the liquid inlet pipe 12 and the liquid outlet pipe 9 are respectively located at two ends of the coupling 1; the thermal insulation sleeve 2 is a cylindrical structure and is made of thermal insulation foam material.

[0033] Example 2

[0034] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A heat-compensated petroleum pipe coupling shown in the figure comprises a coupling 1, wherein the inner two ends of the coupling 1 are threadedly connected with a pipe 8, the surface of the pipe 8 is fixed with a sliding sleeve connected with a connecting sleeve 6, the inner side of the connecting sleeve 6 is threadedly connected with the two ends of the coupling 1, a sealing ring 15 is slidably installed inside the connecting sleeve 6, a heat-conducting silicone sleeve 16 is bonded to the surface of the coupling 1, a spiral coil 3 is sleeved on the surface of the heat-conducting silicone sleeve 16, an electric heating wire 17 is inserted into the interior of the spiral coil 3, a liquid inlet pipe 12 is connected to the top end of one end of the spiral coil 3, a liquid outlet pipe 9 is connected to the bottom end of the other end of the spiral coil 3, a temperature sensor 11 is bonded to the bottom end of the heat-conducting silicone sleeve 16, and an insulation sleeve 2 is sleeved on the outer surface of the spiral coil 3.

[0035] By connecting the coupling 1 to the outer end of the connection of the pipeline 8, and arranging a heat-conducting silicone sleeve 16, a spiral coil 3 and an insulation sleeve 2 on the outside of the coupling 1, therefore, when the coupling 1 and the pipeline 8 are arranged outdoors and after day and night, the temperature of the surface of the coupling 1 is detected by the temperature sensor 11, the liquid inside the spiral coil 3 can be heated to a certain temperature by the electric heating wire 17, the connection between the coupling 1 and the pipeline 8 is heated and insulated, and the insulation effect is enhanced by the insulation sleeve 2. Therefore, the connection between the coupling 1 and the pipeline 8 is heated and insulated, the influence of the temperature difference between day and night is reduced, and the occurrence of gaps or expansion cracks due to thermal expansion and contraction is avoided. At the same time, when exposed to sunlight during the day, the insulation sleeve 2 reduces high temperature exposure, and reduces the high temperature of the connection between the coupling 1 and the pipeline 8.

[0036] A first connecting flange 5 is fixed at both ends of the coupling 1, a first connecting hole 13 is opened on the surface of the first connecting flange 5, a second connecting flange 7 is fixed on the surface of the pipe 8, a second connecting hole 14 is opened on the surface of the second connecting flange 7, bolts 4 pass through the first connecting hole 13 and the second connecting hole 14, and a nut 10 is connected to one end of the bolt 4.

[0037] The connection between the coupling 1 and the pipe 8 is fastened by the connecting sleeve 6 and sealed by the sealing ring 15. Moreover, the pipe 8 and the coupling 1 are fastened and installed by the first connecting flange 5, the second connecting flange 7 and the bolts 4. Therefore, the connection between the pipe 8 and the coupling 1 is relatively tight and is not easily affected by the shaking of the pipe 8 to form a gap.

[0038] The first connecting flanges 5 are located at two ends of the thermal insulation sleeve 2 and abut against the side surfaces of the connecting sleeve 6 .

[0039] The second connecting flange 7 is parallel to the first connecting flange 5 , the first connecting hole 13 is aligned with the second connecting hole 14 , the second connecting flange 7 is located outside the connecting sleeve 6 , and the nut 10 is located outside the second connecting hole 14 .

[0040] Working method: By connecting the coupling 1 to the outer end of the connection of the pipeline 8, and arranging a heat-conducting silicone sleeve 16, a spiral coil 3 and an insulation sleeve 2 on the outside of the coupling 1, therefore, when the coupling 1 and the pipeline 8 are arranged outdoors and after day and night, the temperature of the surface of the coupling 1 is detected by the temperature sensor 11, the liquid inside the spiral coil 3 can be heated to a certain temperature by the electric heating wire 17, the connection between the coupling 1 and the pipeline 8 is heated and insulated, and the insulation effect is enhanced by the insulation sleeve 2, therefore, the connection between the coupling 1 and the pipeline 8 is heated and insulated, the influence of the temperature difference between day and night is reduced, and the occurrence of gaps or expansion cracks due to thermal expansion and contraction is avoided. At the same time, when exposed to sunlight during the day, the insulation sleeve 2 is used to reduce high temperature exposure, and the high temperature to which the coupling 1 and the pipeline 8 are subjected is reduced.

[0041] The connection between the coupling 1 and the pipe 8 is fastened by the connecting sleeve 6 and sealed by the sealing ring 15. Moreover, the pipe 8 and the coupling 1 are fastened and installed by the first connecting flange 5, the second connecting flange 7 and the bolts 4. Therefore, the connection between the pipe 8 and the coupling 1 is relatively tight and is not easily affected by the shaking of the pipe 8 to form a gap.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat-compensated petroleum pipe coupling, comprising a coupling (1), characterized in that: The inner two ends of the coupling (1) are threadedly connected to a pipe (8), the surface of the pipe (8) is fixed with a sliding sleeve connected to a connecting sleeve (6), the inner side of the connecting sleeve (6) is threadedly connected to the two ends of the coupling (1), a sealing ring (15) is slidably installed inside the connecting sleeve (6), the surface of the coupling (1) is bonded with a heat-conducting silicone sleeve (16), the surface of the heat-conducting silicone sleeve (16) is sleeved with a spiral coil (3), an electric heating wire (17) is inserted into the interior of the spiral coil (3), the top end of one end of the spiral coil (3) is connected to a liquid inlet pipe (12), the bottom end of the other end of the spiral coil (3) is connected to a liquid outlet pipe (9), the bottom end of the heat-conducting silicone sleeve (16) is bonded with a temperature sensor (11), and the outer surface of the spiral coil (3) is sleeved with a heat-insulating sleeve (2).

2. A thermal compensation petroleum pipe coupling according to claim 1, characterized in that: A first connecting flange (5) is fixed at both ends of the coupling (1), a first connecting hole (13) is formed on the surface of the first connecting flange (5), a second connecting flange (7) is fixed on the surface of the pipe (8), a second connecting hole (14) is formed on the surface of the second connecting flange (7), bolts (4) pass through the first connecting hole (13) and the second connecting hole (14), and a nut (10) is connected to one end of the bolt (4).

3. A thermal compensation petroleum pipe coupling according to claim 1, characterized in that: The inner surface and the outer surface of the coupling (1) are both threaded structures, the inner surface of the connecting sleeve (6) is a threaded structure and is threadedly connected with the two ends of the coupling (1), and the sealing ring (15) is abutted against the connection between the coupling (1) and the pipe (8).

4. A thermal compensation petroleum pipe coupling according to claim 1, characterized in that: The sealing ring (15) is a circular ring structure, and its cross section is a triangular structure.

5. The thermal compensation petroleum pipe coupling according to claim 1, characterized in that: The spiral coil (3) is spirally wound around the outer surface of the heat-conducting silicone sleeve (16), and the liquid inlet pipe (12) and the liquid outlet pipe (9) are respectively located at two ends of the coupling (1).

6. The thermal compensation petroleum pipe coupling according to claim 1, characterized in that: The thermal insulation sleeve (2) is of cylindrical structure and is made of thermal insulation foam material.

7. A thermal compensation petroleum pipe coupling according to claim 2, characterized in that: The first connecting flange (5) is located at both ends of the thermal insulation sleeve (2) and abuts against the side surface of the connecting sleeve (6).

8. The thermal compensation petroleum pipe coupling according to claim 2, characterized in that: The second connecting flange (7) is parallel to the first connecting flange (5), the first connecting hole (13) is aligned with the second connecting hole (14), the second connecting flange (7) is located on the outside of the connecting sleeve (6), and the nut (10) is located on the outside of the second connecting hole (14).

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