Auxiliary connecting device for oil pipeline

Abstract

The present application provides an auxiliary connection device for oil pipelines, which is used to connect two sections of oil pipelines. The auxiliary connection device includes a first connector, a second connector, and an auxiliary sealing roll arranged on the top of the first connector and the second connector, respectively arranged at adjacent oil pipeline joints. A pre-docking groove is arranged on the edge of the outer wall of one of the two connectors, and a retractable pre-docking piece is arranged on the edge of the outer wall of the other connector. The pre-docking piece is slidably matched with the pre-docking groove. A positioning groove is connected to the side of the pre-docking groove away from the docking surface. The pre-docking piece has a hinged position, and a partial structure of the pre-docking piece can fit with the positioning groove. The auxiliary sealing roll includes a sealing strip, which surrounds the connection between the first connector and the second connector; thereby improving the sealing effect, simplifying the installation structure, reducing the deflection during alignment connection, and improving the service life.

Description

Technical Field

[0001] The present application relates to the technical field of petroleum pipelines, and in particular to an auxiliary connection device for a petroleum pipeline. Background Art

[0002] Petroleum refers to a mixture of hydrocarbons in gaseous, liquid, or solid forms, occurring naturally. The reliability and safety of pipeline connections are crucial during the installation and maintenance of petroleum pipelines. Existing connection technologies for petroleum pipelines primarily include welding, flange connections, and threaded connections. These traditional connection methods present several practical challenges, such as:

[0003] It is inconvenient to connect, and misalignment often occurs when connecting two pipelines, which affects the subsequent normal connection and causes leakage. After the connection, most of them only use the butt connection method. Since impact may occur during oil transportation, if the flow direction is not limited, long-term use may cause loosening due to impact, affecting the sealing performance. Moreover, the existing connection method structure is relatively complex, and the sealing of the pipeline is often only connected by a mechanical structure to reduce the leakage of internal oil to the outside, while ignoring the possibility of dust, oil residue, etc. from the outside entering through the connection gap, which may not only accumulate at the connection, causing wear at the pipeline connection, but also have poor sealing effect.

[0004] Therefore, the existing technology needs to be further improved and enhanced. Utility Model Content

[0005] The present application provides an auxiliary connection device for a petroleum pipeline, so as to solve the problems in the prior art such as inconvenient connection, inconvenient alignment, poor sealing effect, and complex structure of the connection structure.

[0006] The technical solutions adopted in this application are:

[0007] The present application provides an auxiliary connection device for an oil pipeline, which is used to connect two sections of oil pipeline. The auxiliary connection device includes a first connector and a second connector, and an auxiliary sealing roll arranged on the top of the first connector and the second connector, respectively arranged at adjacent oil pipeline joints. The outer wall edge of one of the two is provided with a pre-docking groove, and the outer wall edge of the other of the two is provided with a retractable pre-docking part. The pre-docking part slides with the pre-docking groove. The side of the pre-docking groove away from the docking surface is connected to a positioning groove. The pre-docking part has a hinged position, and part of the structure of the pre-docking part can be fitted with the positioning groove. The auxiliary sealing roll includes a sealing strip, which surrounds the connection between the first connector and the second connector.

[0008] As a preferred embodiment of the present application, the diameter of the first connector is larger than the diameter of the oil pipeline, the connecting surfaces of the first connector and the second connector are both provided with connecting holes, and the auxiliary connecting device also includes a connecting piece, which is detachably connected to the connecting hole.

[0009] As a preferred embodiment of the present application, the pre-docking groove and the positioning groove are in an L-shaped structure.

[0010] As a preferred embodiment of the present application, the pre-docking groove is recessed toward the center of the first connector or the second connector, and the outer side wall of the pre-docking piece is coplanar with the outer side wall of the first connector and the second connector.

[0011] As a preferred embodiment of the present application, the pre-docking part includes an insertion part, a positioning part and a hinge position. The insertion part cooperates with the pre-docking groove, the positioning part is adapted to the pre-positioning groove, and the hinge position is arranged at the connection between the two, so that the insertion part and the positioning part rotate to form an L-shaped structure.

[0012] As a preferred embodiment of the present application, a flexible layer is provided on the inner wall of the positioning groove.

[0013] As a preferred embodiment of the present application, the auxiliary sealing roll includes a main frame, a roller and the sealing strip arranged on the roller, the axis of the roller is parallel to the axis of the oil pipeline, and the width of the sealing strip is greater than the thickness of the side walls of the first connector plus the second connector.

[0014] As a preferred embodiment of the present application, the main frame includes a support frame, a rotating shaft and a shielding portion. The support frame is connected to the top wall of the first connecting head or the second connecting head. The rotating shaft is arranged at the center of the support frame. The roller rotates on the rotating shaft. The shielding portion is arranged at the top of the support frame and covers part of the structure of the roller.

[0015] As a preferred embodiment of the present application, the connecting surface of one of the first connector and the second connector is provided with an annular groove, and the connecting surface of the other one is provided with an annular ridge, the annular ridge is inserted into and fits with the annular groove, and the inner wall of the annular groove is provided with a sealing sheet.

[0016] As a preferred embodiment of the present application, a sealing groove is provided on the connecting surface of the first connector and the second connector, and a sealing ring is provided in the sealing groove.

[0017] Due to the adoption of the above technical solution, the technical effects achieved by this application are:

[0018] 1. The present application provides an auxiliary connection device for an oil pipeline. By setting an auxiliary sealing roll, the outer wall gap of the first connector and the second connector can be sealed by the sealing strip of the auxiliary sealing roll after the first connector and the second connector are connected. This can not only further improve the sealing effect and reduce the leakage of oil to the outside, but also reduce the entry of external dust, oil residues and other structures into the gap, ensure the cleanliness of the internal transportation environment, and reduce the wear of the first connector and the second connector caused by dust entering the gap; in addition, the present application sets a pre-docking groove and a pre-docking part, which can ensure the alignment of the connection and reduce the deflection of the connection by assembling the pre-docking groove and the pre-docking part during docking; and, by setting the pre-docking part with a hinge position and setting the pre-docking groove connected to the positioning groove, part of the structure of the pre-docking part can be bent to the positioning groove to achieve axial clamping, thereby further ensuring the tightness of the connection.

[0019] 2. As a preferred embodiment of the present application, the present application realizes the assembly connection between the first connector and the second connector by setting connecting holes and connecting parts to ensure the connection effect, and realizes the axial positioning effect after the pre-positioning effect by setting the pre-docking groove and the positioning groove in an L shape, and realizes the coplanar outer wall of the pre-docking part and the outer wall of the first connector and the second connector by setting it, which not only has a beautiful appearance, but also facilitates the adhesion and fixation of the sealing strip here, reduces the wrinkles and protrusions caused by unevenness, and further improves the sealing effect.

[0020] 3. As a preferred embodiment of the present application, the present application sets a pre-docking part including an insertion part, a positioning part and a hinge part, so that the entire pre-docking part can be rotated, thereby facilitating simultaneous connection with the positioning groove and the pre-docking groove. The structure is simple and convenient for connection and sealing.

[0021] 4. As a preferred embodiment of the present application, the present application sets an auxiliary sealing roll main body frame including a support frame, a rotating shaft and a shielding portion, which can cover and protect part of the structure of the drum through the shielding portion, reduce the impact of external environmental factors on the sealing strip, and extend the service life to a certain extent. In addition, by setting the width of the sealing strip to be greater than the thickness of the side walls of the first connector and the second connector, the sealing strip can not only seal the connection between the first connector and the second connector, but also can seal and adhere to part of the area where the positioning grooves are set for the first connector and the second connector through a wider structure, so as to further enhance the sealing and fixing effect between the pre-jointing part and the positioning groove.

[0022] 5. As a preferred embodiment of the present application, the present application provides an annular groove and an annular ridge, which can improve the tightness of the connection between the first connector and the second connector by docking these two structures, and the structure of the annular ridge can play a certain role in blocking oil leakage. In addition, a sealing sheet is also provided in the annular groove, which can further improve the sealing effect; further, the structure of the sealing groove and the sealing ring can also further improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of an auxiliary connection device for a petroleum pipeline provided in this application;

[0025] Figure 2 This is a schematic diagram of the assembly structure of an auxiliary connection device for a petroleum pipeline provided in this application;

[0026] Figure 3 This is a structural diagram of a pre-docking component of an auxiliary connection device for a petroleum pipeline provided in this application;

[0027] Figure 4 This is a rear view of the second connector of the oil pipeline auxiliary connection device provided by this application;

[0028] Figure 5 for Figure 4 A magnified view of point A;

[0029] Figure 6 A front view of a first connector of an auxiliary connecting device for a petroleum pipeline provided in this application;

[0030] Figure 7 This is a front view of the second connector of the petroleum pipeline auxiliary connection device provided in this application.

[0031] Reference numerals:

[0032] 10 first connector; 11 pre-jointing member; 12 connecting hole; 13 inserting portion; 14 positioning portion; 15 hinged portion; 16 buckle; 17 annular groove;

[0033] 20 second connector; 21 pre-docking groove; 22 positioning groove; 23 annular edge; 24 sealing groove;

[0034] 30 auxiliary sealing roll; 31 sealing strip; 32 main frame; 33 roller; 34 support frame; 35 rotating shaft; 36 shielding part. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0037] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0038] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] like Figures 1 to 7As shown, the present application provides an auxiliary connection device for an oil pipeline, which is used to connect two sections of oil pipeline. The auxiliary connection device includes a first connector 10 and a second connector 20 respectively arranged at adjacent oil pipeline joints and an auxiliary sealing roll 30 arranged on the top of the first connector 10 and the second connector 20. The outer wall edge of one of the two is provided with a pre-docking groove 21, and the outer wall edge of the other of the two is provided with a retractable pre-docking part 11. The pre-docking part 11 slides with the pre-docking groove 21. The side of the pre-docking groove 21 away from the docking surface is connected to a positioning groove 22. The pre-docking part 11 has a hinge position 15, and part of the structure of the pre-docking part 11 can be fitted with the positioning groove 22. The auxiliary sealing roll 30 includes a sealing strip 31, which surrounds the connection between the first connector 10 and the second connector 20.

[0041] Among them, such as Figure 2 and Figure 5 As shown, the first connector 10 and the second connector 20 can adopt a structure similar to a flange, that is, the diameter of the first connector 10 is larger than the diameter of the oil pipeline, and the connecting surfaces of the first connector 10 and the second connector 20 are both provided with connecting holes 12. The auxiliary connecting device also includes a connecting piece, and the connecting piece is detachably connected to the connecting hole 12.

[0042] Optionally, the connection hole 12 and the connecting piece can be connected by bolts and fixed by threaded connection, which is convenient for disassembly and assembly and has a better positioning effect.

[0043] As a preferred embodiment of the present application, the pre-jointing groove 21 and the positioning groove 22 are in an L-shaped structure, such as Figure 3 and Figure 4 As shown, taking the first connector 10 as an example, the pre-docking groove 21 is arranged along the length direction of the oil pipeline, and the positioning groove 22 is along the pre-docking groove 21. When it reaches the end of the side wall of the first connector 10, it bends toward the side away from the docking surface to form an L-shaped structure. Of course, the L-shaped structure referred to here is not an L-shaped structure that appears on a plane, but a similar structure formed due to the bending and extension structure between the pre-docking groove 21 and the positioning groove 22.

[0044] Furthermore, if Figure 2 and Figure 5As shown, the pre-docking groove 21 is recessed toward the center of the first connector or the second connector, and the outer side wall of the pre-docking component 11 is coplanar with the outer side wall of the first connector and the second connector. It can be understood that the coplanarity referred to here means that after the pre-docking component 11 is inserted into the pre-docking groove 21, from the outside, there is no obvious convex or concave structure on the surface of the first connector and the second connector. Of course, a connection gap will inevitably appear when touched by hand. Such a structure is not only beautiful in appearance, but also facilitates the adhesion and fixation of the sealing strip 31 here, reducing wrinkles and bulges caused by unevenness, and further improving the sealing effect.

[0045] In a preferred embodiment, Figure 3 and Figure 5 As shown, the pre-docking part 11 includes an insertion part 13, a positioning part 14 and a hinge part 15. The insertion part 13 cooperates with the pre-docking groove 21, the positioning part 14 is adapted to the pre-positioning groove 22, and the hinge part 15 is arranged at the connection between the two, so that the insertion part 13 and the positioning part 14 rotate to form an L-shaped structure.

[0046] That is to say, the pre-docking member 11 should be a two-stage rotatable structure. During use, before the first connector 10 and the second connector 20 are connected, the longer pre-docking member 11 can be inserted into the pre-docking groove 21. At this time, the pre-docking member 11 is a long strip structure and does not need to be bent. When the front end structure of the pre-docking member 11 enters the pre-docking groove 21, it can largely ensure the alignment of the first connector 10 and the second connector 20 when they are subsequently connected, reducing deflection. At this time, the first connector 10 can be connected to the second connector 20. 0 and the distance between the second connector 20 is gradually shortened, thereby achieving docking. During this process, the pre-docking component 11 is also gradually inserted into the pre-docking groove 21 until the docking of the first connector 10 and the second connector 20 is completed. At this time, the hinge position 15 of the pre-docking component 11 is at the connection between the pre-docking groove 21 and the positioning groove 22, and the insertion portion 13 slightly protrudes from the pre-docking groove 21. At this time, the positioning portion 14 can be rotated so that the positioning portion 14 rotates in the direction of the positioning groove 22 until the positioning portion 14 is in contact with the positioning groove 22 to achieve positioning in the axial direction.

[0047] It is understandable that in this process, Figure 1 As shown, there can be multiple pre-docking parts 11 and pre-docking grooves 21, and the pre-docking part 11 can be set at the first connecting head 10, and the pre-docking groove 21 can be set at the second connecting head 20. In addition, in order to facilitate improving the convenience of pre-positioning, the insertion part 13 of the pre-docking part 11 can be provided with a telescopic section to increase the length of the pre-docking part 11, thereby making the distance during pre-docking longer.

[0048] In addition, to ensure the positioning effect, a rotatable or detachable snap-on structure 16 can be provided on the edge of the pre-docking groove 21 to improve the positioning effect after the positioning portion 14 enters the positioning groove 22. In addition, a flexible layer is provided on the inner wall of the positioning groove 22 to achieve a certain interference fit between the two, thereby improving the positioning effect.

[0049] As a preferred embodiment of the present application, Figure 2 As shown, the auxiliary sealing roll 30 includes a main frame 32, a roller 33 and the sealing strip 31 set on the roller 33. The axis of the roller 33 is parallel to the axis of the oil pipeline. The width of the sealing strip 31 is greater than the thickness of the side walls of the first connector 10 and the second connector 20.

[0050] It can be understood that by setting the width of the sealing strip 31 to be greater than the thickness of the side walls of the first connector 10 and the second connector 20, the sealing strip 31 can not only seal the connection between the first connector 10 and the second connector 20, but also can seal and adhere to the partial area of ​​the part where the positioning groove 22 is set in the first connector 10 and the second connector 20 through a wider structure, so as to further enhance the sealing and fixing effect between the pre-jointed part 11 and the positioning groove 22.

[0051] Furthermore, if Figure 2 As shown, the main frame 32 includes a support frame 34, a rotating shaft 35 and a shielding portion 36. The support frame 34 is connected to the top wall of the first connecting head 10, the rotating shaft 35 is arranged at the center of the support frame 34, and the roller 33 is rotatably arranged on the rotating shaft 35. The shielding portion 36 is arranged on the top of the support frame 34, and covers a part of the structure of the roller 33. The shielding portion 36 covers and protects the part of the structure of the roller 33, reduces the impact of external environmental factors on the sealing strip 31, and extends the service life to a certain extent. In addition, by directly setting the sealing strip 31 and the roller 33 as one body with the connecting device, on the one hand, there is no need for additional carrying, which is convenient for use. In addition, during later maintenance and inspection, if there is a problem with the sealing strip 31, it can be directly repaired, and the operation is more convenient.

[0052] Among them, for the sealing strip 31, it can use EPDM (ethylene propylene diene monomer rubber), which has good chemical resistance and aging resistance and is suitable for a variety of petroleum products; it can also use NBR (nitrile rubber), which has good oil resistance and is suitable for sealing petroleum and petroleum products.

[0053] As a preferred embodiment of the present application, the connecting surface of one of the first connector 10 and the second connector 20 is provided with an annular groove 17, and the connecting surface of the other one is provided with an annular ridge 23, the annular ridge 23 is inserted into and matched with the annular groove 17, and the inner wall of the annular groove 17 is provided with a sealing sheet.

[0054] like Figure 6 and Figure 7 As shown, an annular groove 17 can be provided on the first connector 10, and an annular ridge 23 can be provided on the second connector 20. The end of the annular ridge 23 can abut against the sealing sheet in the annular groove 17, thereby improving the sealing effect by reducing the gap.

[0055] Furthermore, a sealing groove 24 is provided on the connection surface of the first connector 10 and the second connector 20 , and a sealing ring is provided in the sealing groove 24 to further improve the sealing effect.

[0056] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0057] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. An auxiliary connecting device for oil pipelines, used for connecting two sections of oil pipelines, characterized in that: The auxiliary connection device includes a first connector and a second connector respectively arranged on adjacent oil pipeline joints, and an auxiliary sealing roll arranged on the top of the first connector and / or the second connector. A pre-docking groove is arranged on the edge of the outer wall of one of the two, and a retractable pre-docking member is arranged on the edge of the outer wall of the other of the two. The pre-docking member is slidably matched with the pre-docking groove. A positioning groove is connected to the side of the pre-docking groove away from the docking surface. The pre-docking member has a hinge position, and a partial structure of the pre-docking member can be fitted with the positioning groove. The auxiliary sealing roll includes a sealing strip, and the sealing strip surrounds the connection between the first connector and the second connector.

2. The petroleum pipeline auxiliary connection device according to claim 1, characterized in that: The diameter of the first connector is larger than the diameter of the oil pipeline. The connecting surfaces of the first connector and the second connector are both provided with connecting holes. The auxiliary connecting device also includes a connecting piece, and the connecting piece is detachably connected to the connecting hole.

3. The auxiliary connecting device for petroleum pipeline according to claim 2, characterized in that: The pre-joint groove and the positioning groove are in an L-shaped structure.

4. The petroleum pipeline auxiliary connection device according to claim 3, characterized in that: The pre-docking groove is recessed toward the center of the first connector or the second connector, and the outer side wall of the pre-docking piece is coplanar with the outer side walls of the first connector and the second connector.

5. The petroleum pipeline auxiliary connection device according to claim 4, characterized in that: The pre-docking component includes an insertion portion, a positioning portion and a hinge portion, wherein the insertion portion cooperates with the pre-docking groove, the positioning portion is adapted to the positioning groove, and the hinge portion is arranged at the connection between the two, so that the insertion portion and the positioning portion rotate to form an L-shaped structure.

6. The petroleum pipeline auxiliary connection device according to claim 5, characterized in that: The inner wall of the positioning groove is provided with a flexible layer.

7. The petroleum pipeline auxiliary connection device according to claim 1, characterized in that: The auxiliary sealing roll comprises a main frame, a roller and the sealing strip arranged on the roller, the axis of the roller is parallel to the axis of the oil pipeline, and the width of the sealing strip is greater than the thickness of the side walls of the first connector plus the second connector.

8. The petroleum pipeline auxiliary connection device according to claim 7, characterized in that: The main frame includes a support frame, a rotating shaft and a shielding portion. The support frame is connected to the top wall of the first connecting head or the second connecting head. The rotating shaft is arranged at the center of the support frame. The roller is rotated on the rotating shaft. The shielding portion is arranged on the top of the support frame and covers a partial structure of the roller.

9. The petroleum pipeline auxiliary connection device according to claim 1, characterized in that: The connection surface of one of the first connector and the second connector is provided with an annular groove, and the connection surface of the other connector is provided with an annular ridge, the annular ridge is inserted and matched with the annular groove, and the inner wall of the annular groove is provided with a sealing sheet.

10. The petroleum pipeline auxiliary connection device according to claim 9, characterized in that: The connecting surfaces of the first connector and the second connector are provided with a sealing groove, and a sealing ring is provided in the sealing groove.

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