A pressure stabilizing mechanism for oil and gas pipelines

Abstract

This utility model relates to the field of oil and gas pipeline technology, and in particular to an oil and gas pipeline pressure stabilizing mechanism. It includes a base with a semi-circular first notch at the center of the top of each of the left and right ends, and a second notch at the top of the front and rear sides. Two horizontal fixed shafts are installed inside the base. Two semi-circular tubular outer shells are provided, symmetrically distributed front and rear. A hinge block is installed at the bottom of each outer shell, and the two hinge blocks are rotatably mounted on the two fixed shafts. The two outer shells can be joined and closed to form a circular tube. Two pipe bodies are provided, joined left and right, and inserted between the two outer shells. This utility model achieves a self-sealing connection of the pipe bodies. The multi-layer sealing structure significantly reduces the risk of leakage, providing a core guarantee for stable pressure delivery by the pipe body and preventing leakage from damaging the pressure stabilizing effect. Combined with a pressure sensor, the sealing performance at the pipe body connection can be monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas pipeline technology, and in particular to an oil and gas pipeline pressure stabilizing mechanism. Background Technology

[0002] In the field of oil and gas pipeline transportation, stable transportation pressure and reliable sealing performance are the core prerequisites for ensuring the safe and efficient transportation of oil and gas. As a key component of the pipeline system, the performance of the oil and gas pipeline pressure stabilizing mechanism directly affects the overall transportation efficiency and safety level. However, the existing oil and gas pipeline pressure stabilizing mechanisms still have certain shortcomings in practical applications, making it difficult to meet the high requirements of industrial production for safety, convenience and stability.

[0003] The sealing effect at pipeline joints is the core foundation and key guarantee for achieving pipeline pressure stabilization. Current pipeline sealing and connection schemes often only complete the connection through basic sealing structures, which is insufficient for subsequent protection of the joint. Once a leak occurs at the joint, it can easily cause internal gas pressure fluctuations in the pipeline, directly destroying the pressure stabilization effect. At the same time, for some buried pipelines, existing technologies lack effective monitoring methods, making it impossible to grasp the sealing stability of the joint in real time and predict leakage risks in advance, thus posing safety hazards to oil and gas transportation. Therefore, this application proposes an oil and gas pipeline pressure stabilization mechanism. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure stabilizing mechanism for oil and gas pipelines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil and gas pipeline pressure stabilizing mechanism, comprising: The base has a semi-circular first notch at the center of the top of both the left and right ends, and a second notch at the top of both the front and back sides. Two fixed shafts are provided and installed horizontally inside the base; There are two outer shells, each a semi-circular tube, which are symmetrically distributed front to back. A hinge block is installed at the bottom of each outer shell, and the two hinge blocks are rotatably mounted on two fixed shafts. There are two tubes, which are joined together on the left and right sides and inserted between two outer shells. The inner walls of both ends of the outer shells are in contact with the outer walls of the tubes. A pressure sensor is mounted on the outside of one of the housings, with the sensor probe penetrating the side wall of the housing.

[0006] Optionally, the fitting side surfaces of the two casings when closed are each provided with a "匚"-shaped groove adapted to the shape thereof, a sealing gasket is arranged between the two corresponding grooves when the two casings are closed, a flared annular groove is provided on the outer side of the opening at both ends of each casing, and a sealing ring is arranged in each of the two annular grooves.

[0007] Optionally, the sealing ring is composed of two semicircular portions that are symmetrical front and back, the outer ring of the sealing ring has an inclined surface that fits against the inner wall of the annular groove, and the inner wall of the sealing ring is horizontal and fits against the outer wall of the pipe body.

[0008] Optionally, fixing plates are installed at both ends of the outer sides of the two casings, two through holes symmetrically distributed up and down are opened on the side surface of each fixing plate, and an extrusion assembly for extruding the corresponding sealing ring is inserted between the two fixing plates at the same end of the two casings.

[0009] Optionally, the extrusion assembly is composed of two sets of symmetrically distributed upper and lower extrusion inserts, the extrusion insert comprises an extrusion ring, connecting plates, screw rods and nuts, the extrusion ring is in a semi-circular ring shape and abuts against the outer side of the sealing ring, horizontal connecting plates are installed at both ends of the extrusion ring, screw rods are installed on the side surfaces of the two connecting plates away from the extrusion ring and close to the fixing plate, the screw rods in the two sets of extrusion inserts are respectively inserted into the through holes on the corresponding fixing plates, a nut is threaded on one end of each screw rod penetrating through the fixing plate, and a second bolt is inserted through between the two vertically corresponding connecting plates in the two sets of extrusion inserts.

[0010] Optionally, locking inserts are installed at both ends of the top of the two casings, the locking insert comprises a fixing block and a first bolt, the fixing block is installed on the top of the casing, and the first bolt is inserted through between the fixing blocks at both ends of the two casings.

[0011] Optionally, support seats are fixedly installed at both ends of the bottom of the base, third notches are opened at both ends of the bottom of the two second notches, after the casing rotates 180 degrees around the fixing shaft, the outer wall of the casing fits against the inner wall of the second notch, the two fixing plates on the outer wall of the casing are located in the two third notches at the bottom of the second notch, and a blocking ring is fixedly sleeved on the outer wall of the fixing shaft and at both ends of the hinged block.

[0012] Optionally, an integrated flange end cover is installed at the butt end of each of the two pipe bodies, a plurality of third bolts are inserted through between the side surfaces of the two flange end covers in a circular array, an annular sealing groove is opened on the side surface of one of the flange end covers, and a sealing ring adapted to the sealing groove and inserted into the sealing groove is installed on the side surface of the other flange end cover.

[0013] Advantageous effects of the present utility model: Sealing between the two housings at their closing position is achieved through a C-shaped groove and a sealing gasket; the two ends of the housing fit against the outer wall of the pipe body through a trumpet-shaped annular groove and a split semicircular sealing ring, and then the sealing ring is extruded by an extrusion assembly to make it closely fit against the annular groove and the pipe body, strengthening the sealing connection between the housing and the pipe body; at the same time, the butt ends of the two pipe bodies are matched with the sealing groove of the flange end cover and the sealing ring, and fastened by a third bolt, realizing the sealing of the butt joint of the pipe bodies themselves. The multi-layer sealing structure significantly reduces the risk of leakage, provides core guarantee for the stable pressure delivery of the pipe body, and avoids damaging the pressure stabilization effect due to leakage.

[0014] A pressure sensor is installed outside the housing, and its probe penetrates the side wall of the housing to directly contact the area around the pipe body, which can collect pressure data at the pipe body connection in real time. Once sealing failure or leakage occurs, the pressure sensor can quickly capture pressure fluctuations and give an early warning of leakage risk in time, avoiding potential safety hazards in oil and gas transportation caused by undetectable leakage, and improving the safety and controllability of pipe body operation.

[0015] The housing can be opened and closed by 30° rotation through a hinged block and a fixed shaft, and the butt joint and locking of the housing can be completed quickly by matching with the locking plug-in at the top; the extrusion assembly adopts a combination of a screw rod, a nut and a second bolt, and the pipe body butt joint is fastened by a third bolt, so that the installation and disassembly can be completed without complex special tools; at the same time, after the housing rotates, its outer wall fits against the second notch of the base and the fixing plate is embedded into the third notch, which facilitates positioning during installation. The overall structural design greatly simplifies the installation and later maintenance processes, and reduces labor and time costs. Description of Drawings

[0016] Other features, objects and advantages of the present utility model will become more apparent upon reading the detailed description of non-limiting embodiments given below with reference to the accompanying drawings:[ / END] Figure 1 is a schematic overall structural view of the present utility model; Figure 2 is a schematic structural view of the connection between the housing and the pipe body of the present utility model; Figure 3 is a schematic structural view of the pipe body butt joint of the present utility model; Figure 4 is a schematic sectional structural view of the pipe body of the present utility model; Figure 5 is a schematic structural view of the connection between the base and the housing of the present utility model; Figure 6 is a schematic structural view of the base of the present utility model; Figure 7 is a schematic structural view of the housing, the sealing ring and the extrusion assembly of the present utility model; Figure 8 is a schematic structural view of the extrusion assembly of the present utility model; In the drawings: 1. Base; 11. Support base; 12. First notch; 13. Second notch; 14. Third notch; 15. Fixed shaft; 2. Outer shell; 21. Hinge block; 22. Locking insert; 23. Pressure sensor; 24. Fixing plate; 25. Sealing gasket; 26. Annular groove; 221. Fixing block; 222. First bolt; 3. Sealing ring; 4. Extrusion assembly; 41. Extrusion ring; 42. Connecting plate; 43. Screw; 44. Nut; 45. Second bolt; 5. Pipe body; 51. Flange end cap; 52. Sealing groove; 53. Sealing ring; 54. Third bolt. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-8 This utility model provides a technical solution: an oil and gas pipeline pressure stabilizing mechanism, including a base 1, with a semi-circular first notch 12 at the center of the top of both the left and right ends of the base 1, and a second notch 13 at the top of both the front and rear sides of the base 1. Two horizontal fixed shafts 15 are installed inside the base 1. Two outer shells 2 are provided, each being a semi-circular tube, symmetrically distributed front and rear. A hinge block 21 is installed at the bottom of each of the two outer shells 2, and the two hinge blocks 21 are rotatably sleeved on the two fixed shafts 15. The two outer shells 2 can be joined and closed to form a circular tube. Two pipe bodies 5 are provided, joined left and right, and inserted between the two outer shells 2. The inner walls of both ends of the outer shells 2 are in contact with the outer walls of the pipe bodies 5. A pressure sensor 23 is installed on the outside of one of the outer shells 2, and the probe of the pressure sensor 23 penetrates through the side wall of the outer shell 2. It can be designed to be adapted for overall installation through the first notch 12 at both ends of the base 1 and the second notch 13 on both sides. The outer shell 2 can be rotated and opened and closed by means of the hinge block 21 and the fixed shaft 15, which facilitates the quick insertion and encapsulation of two left and right connected tubes 5. The fit between the inner wall of the outer shell 2 and the outer wall of the tube 5 initially ensures the limitation and enclosure of the tube 5. At the same time, the pressure sensor 23 installed on the outside with the probe penetrating the outer shell 2 can directly monitor the pressure in the area around the tube 5, providing hardware support for real-time monitoring of the sealing status of the tube 5 and early warning of leakage risks. It lays the foundation for pressure stabilization effect from both structural construction and monitoring function aspects.

[0019] like Figure 5 and Figure 7As shown, when the two housings 2 are closed, the abutting side surfaces are each provided with a "匚"-shaped groove adapted to the shape thereof. When the two housings 2 are closed, a sealing gasket 25 is disposed between each of the corresponding two grooves. A flared annular groove 26 is formed on the outer side of both end openings of the housing 2, and a sealing ring 3 is disposed in each of the two annular grooves 26. The "匚"-shaped groove on the closing surface of the housing 2 cooperates with the sealing gasket 25 to accurately fill the gap when the two semicircular tubular housings 2 are butted, so as to avoid leakage at the joint of the housings 2; the flared annular grooves 26 at both ends of the housing 2 are matched with the sealing ring 3, and the sealing ring 3 is tightly fitted in the annular groove 26 by extrusion, which can greatly reduce potential leakage points at the joint of the pipe body 5, and provides key sealing guarantee for pressure stabilization of the pipe body 5.

[0020] As Figure 7 and Figure 8 shown, the sealing ring 3 is composed of two symmetrical semicircular front and rear parts, the outer ring of the sealing ring 3 has an inclined surface and fits against the inner wall of the annular groove 26, and the inner wall of the sealing ring 3 is horizontal and fits against the outer wall of the pipe body 5. The split semicircular design enables the sealing ring 3 to be conveniently sleeved and installed without disassembling the pipe body 5, which reduces the assembly difficulty; the inclined surface of the outer ring of the sealing ring 3 fits with the inner wall of the flared annular groove 26, which can fully fill the space of the annular groove 26 and improve the fitting tightness, while the horizontal inner wall ensures flat contact with the outer wall of the pipe body 5, avoids sealing gaps caused by shape mismatch, and further enhances the sealing reliability of the joint between the housing 2 and the pipe body 5.

[0021] As Figure 2 , Figure 7 and Figure 8 shown, fixing plates 24 are installed at both ends of the outer side of the two housings 2, two vertically symmetric through holes are formed on the side surface of each fixing plate 24, and an extrusion assembly 4 for extruding the corresponding sealing ring 3 is inserted between the two fixing plates 24 at the same end of the two housings 2. By adding the fixing plates 24 and the extrusion assembly 4, the problems that the sealing ring 3 is easily loosened and has unstable sealing due to pure fitting are solved. The fixing plates 24 provide stable installation support for the extrusion assembly 4, and the extrusion assembly 4 can apply continuous and stable extrusion force to the sealing ring 3, forcing the sealing ring 3 to fit more tightly between the annular groove 26 and the pipe body 5, which significantly improves the sealing strength of the joint between the housing 2 and the pipe body 5.

[0022] As Figure 7 and Figure 8As shown, the extrusion assembly 4 consists of two sets of symmetrically distributed extrusion inserts. Each extrusion insert includes an extrusion ring 41, a connecting plate 42, a screw 43, and a nut 44. The extrusion ring 41 is semi-circular and rests against the outside of the sealing ring 3. Horizontal connecting plates 42 are installed at both ends of the extrusion ring 41. Screws 43 are installed on the sides of both connecting plates 42 away from the extrusion ring 41 and close to the fixing plate 24. The screws 43 in the two sets of extrusion inserts are respectively inserted into the through holes on the corresponding fixing plates 24, and a nut 44 is threaded onto one end of each screw 43 that penetrates the fixing plate 24. The two corresponding connecting plates 42 in the plug-in are each connected by a second bolt 45. The two sets of symmetrical extrusion plug-in are designed to be disassembled for easy installation and adjustment. The semi-circular extrusion ring 41 can apply uniform extrusion force to the sealing ring 3, avoiding uneven local force that could lead to sealing failure. The screw 43 and nut 44 can be used to flexibly adjust the extrusion force to adapt to the sealing requirements under different working conditions. The second bolt 45 further fixes the two corresponding connecting plates 42 to ensure the overall stability of the extrusion assembly 4. This not only facilitates installation and maintenance but also ensures that the sealing ring 3 maintains a good sealing state for a long time.

[0023] like Figure 1 and Figure 7 As shown, locking inserts 22 are installed at both ends of the top of the two outer shells 2. The locking insert 22 includes a fixing block 221 and a first bolt 222. The fixing block 221 is installed on the top of the outer shell 2, and the first bolt 222 is inserted through the fixing blocks 221 at both ends of the two outer shells 2. By the first bolt 222 passing through the fixing blocks 221 at the top of the two outer shells 2, the two semi-circular tubular outer shells 2 can be quickly locked into a complete tubular shape, preventing the outer shells 2 from loosening due to vibration, pressure and other factors during the operation of the tube body 5, and ensuring the stable wrapping of the tube body 5 by the outer shells 2. During installation and disassembly, only the first bolt 222 needs to be tightened, which improves the efficiency of mechanism assembly and subsequent maintenance.

[0024] like Figure 1 and Figure 5As shown, support seats 11 are fixedly installed at both ends of the bottom of the base 1. Third notches 14 are opened at both ends of the bottom of the two second notches 13. After the outer shell 2 is rotated 30° around the fixed shaft 15, the outer wall of the outer shell 2 fits against the inner wall of the second notch 13. The two fixed plates 24 on the outer wall of the outer shell 2 are located in the two third notches 14 at the bottom of the second notch 13. The outer wall of the fixed shaft 15 and the two ends of the hinge block 21 are fixedly fitted with blocking rings. The support seats 11 at the bottom of the base 1 enhance the placement stability of the overall mechanism. After the outer shell 2 is rotated 30°, the outer wall fits against the second notch 13 and the fixed plates 24 are embedded in the third notches 14, providing precise positioning for the installation of the outer shell 2 and preventing the outer shell 2 from rotating excessively or shifting its position. The blocking rings on the fixed shaft 15 restrict the displacement of the hinge block 21, ensuring that the outer shell 2 rotates smoothly and does not deviate. This improves the convenience of assembly and the stability of use of the mechanism from both the aspects of support stability and installation positioning.

[0025] like Figure 3 and Figure 4 As shown, each of the two pipe bodies 5 has an integrated flange end cap 51 installed at its mating end. Multiple third bolts 54 are inserted in a circular array between the sides of the two flange end caps 51. One flange end cap 51 has an annular sealing groove 52 on its side, and the other flange end cap 51 has a sealing ring 53 that matches the sealing groove 52 and is inserted inside it. The flange end caps 51 and the third bolts 54 cooperate to firmly connect the two pipe bodies 5, ensuring the structural stability of the pipe body 5 mating joint. The precise fit between the sealing groove 52 and the sealing ring 53 forms a special sealing structure on the mating surface of the pipe bodies 5, filling the gaps in the pipe body 5's connection. This forms a double seal with the external seal of the outer shell 2, further ensuring the stability of the internal conveying pressure of the pipe body 5 and preventing the pressure stabilization effect from being compromised due to leakage at the pipe body 5 mating joint.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure stabilizing mechanism for oil and gas pipelines, characterized in that, Comprising: a base (1), wherein a semicircular first notch (12) is provided at the center of the top of each of the left and right ends, and a second notch (13) is provided at the top of each of the front and rear sides; two fixing shafts (15), which are transversely installed in the base (1); two outer shells (2), wherein each outer shell (2) is a semicircular tube, the two outer shells (2) are symmetrically distributed front and rear, a hinged block (21) is installed at the bottom of each of the two outer shells (2), and the two hinged blocks (21) are respectively rotatably sleeved on the two fixing shafts (15); two pipe bodies (5), wherein the two pipe bodies (5) are butted left and right and inserted between the two outer shells (2), and inner walls of two ends of said outer shells (2) are attached to outer walls of the pipe bodies (5); a pressure sensor (23), which is installed outside one of the outer shells (2), and a probe of the pressure sensor (23) penetrates through a side wall of the outer shell (2).

2. The oil and gas pipeline pressure stabilizing mechanism according to claim 1, characterized in that, When the two outer shells (2) are closed, the mutually attached side surfaces are each provided with a "匚"-shaped groove adapted to the shape thereof, a sealing gasket (25) is provided between two corresponding grooves when the two outer shells (2) are closed, a flared annular groove (26) is provided on the outer side of an opening at each end of each outer shell (2), and a sealing ring (3) is provided in each of the two annular grooves (26).

3. The oil and gas pipeline pressure stabilizing mechanism according to claim 2, characterized in that, The sealing ring (3) is composed of two front-rear symmetrical semicircular parts, an outer ring of the sealing ring (3) is an inclined surface and attached to an inner wall of the annular groove (26), and an inner wall of the sealing ring (3) is horizontal and attached to the outer wall of the pipe body (5).

4. The oil and gas pipeline pressure stabilizing mechanism according to claim 3, characterized in that, A fixing plate (24) is installed at each end of an outer side of each of the two outer shells (2), two vertically symmetrical through holes are formed in a side surface of each fixing plate (24), and an extrusion assembly (4) for extruding the corresponding sealing ring (3) is inserted between the two fixing plates (24) at the same end of the two outer shells (2).

5. The oil and gas pipeline pressure stabilizing mechanism according to claim 4, characterized in that, The extrusion assembly (4) is composed of two sets of vertically symmetrical extrusion inserts, the extrusion insert comprises an extrusion ring (41), an adapter plate (42), a screw rod (43) and a nut (44), the extrusion ring (41) is in a semicircular annular shape and abuts against an outer side of the sealing ring (3), a horizontal adapter plate (42) is installed at each end of the extrusion ring (41), the screw rod (43) is installed on the side surface of the two adapter plates (42) away from the extrusion ring (41) and close to the fixing plate (24), the screw rods (43) in the two sets of extrusion inserts are respectively inserted into the through holes on the corresponding fixing plates (24), the nut (44) is threadedly sleeved on one end of each screw rod (43) penetrating through the fixing plate (24), and a second bolt (45) penetrates and is inserted between two vertically corresponding adapter plates (42) in the two sets of extrusion inserts.

6. The oil and gas pipeline pressure stabilizing mechanism according to claim 1, characterized in that, A locking insert (22) is installed at each end of a top of each of the two outer shells (2), the locking insert (22) comprises a fixing block (221) and a first bolt (222), the fixing block (221) is installed on the top of the outer shell (2), and the first bolt (222) penetrates and is inserted between the fixing blocks (221) at two ends of the two outer shells (2).

7. The oil and gas pipeline pressure stabilizing mechanism according to claim 4, characterized in that, Support seats (11) are fixedly installed at both ends of the bottom of the base (1). Third notches (14) are opened at both ends of the bottom of the two second notches (13). After the outer shell (2) is rotated 30° around the fixed shaft (15), the outer wall of the outer shell (2) fits against the inner wall of the second notch (13). The two fixed plates (24) of the outer wall of the outer shell (2) are located in the two third notches (14) at the bottom of the second notch (13). The outer wall of the fixed shaft (15) and both ends of the hinge block (21) are fixedly fitted with blocking rings.

8. The oil and gas pipeline pressure stabilizing mechanism according to claim 1, characterized in that, Both of the pipe bodies (5) are fitted with an integral flange end cap (51). Multiple third bolts (54) are inserted through the two flange end caps (51) in a circular array between their sides. One flange end cap (51) has an annular sealing groove (52) on its side, and the other flange end cap (51) has a sealing ring (53) that is adapted to the sealing groove (52) and inserted into it.

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