An impact-resistant necked flange forging for a petroleum pipeline

Abstract

The utility model is suitable for the technical field of neck flange, provides a kind of petroleum pipeline impact resistance neck flange forge piece, including connecting flange cover, neck flange ring and the impact resistance connecting piece for connecting connecting flange cover and neck flange ring, the impact resistance connecting piece surrounds connecting flange cover and neck flange ring and is set multiple in circumference direction, the impact resistance connecting piece includes the mounting of fixed connection with connecting flange cover, the fixed pin of setting in mounting and the connecting pin of being connected with neck flange ring, the connecting pin is installed in fixed pin interior, and the fixed pin and connecting pin between being provided with buffer spring.The device solves the impact generated in the use process of petroleum pipeline, can cause the problem of the influence of the connecting strength of flange forge piece, reaches the effect of the elasticity of buffer spring in connecting piece interior, resists the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the impact of the internal petroleum flow of petroleum pipeline outer wall and petroleum pipeline, reduces the probability of damage of flange connecting place impact.

Description

Technical Field

[0001] This utility model relates to the field of neck flange technology, and more specifically, it relates to an impact-resistant neck flange forging for oil pipelines. Background Technology

[0002] A neck flange is a common pipe fitting, primarily used for connection and sealing in piping systems. Its main characteristic is a raised neck in the center of the flange, which can be directly welded to the pipe to form a robust connection.

[0003] Patent CN220228234U discloses a necked flange with a sealing structure. A sealing device is provided on the outer side of the necked flange. The sealing device includes a connecting plate welded to the outer side of the necked flange, a guide post welded to the inner side of the connecting plate, a sliding block sleeved on the surface of the guide post, a collar welded to the outer side of the sliding block, and an installation block welded to the outer side of the collar. A knob is internally threaded onto the installation block, and a pressure applying device is movably connected to one end of the knob. An inner gasket is adhered to the inner side of the pressure applying device. This device is mainly used to effectively seal the weld seam at the flange-pipe connection, thereby preventing the welded area from being directly exposed to air. Since welding rod components are prone to corrosion, effectively sealing the welded area reduces the risk of the weld being viewed from above, ensuring stable operation of the pipeline connected by the necked flange under high pressure.

[0004] Although the aforementioned neck flange can effectively seal the weld at the flange-pipe joint, during the use of oil pipelines, whether it is an impact applied from outside the pipeline or an impact generated by the flow of oil inside the pipeline, the neck flange connection will be affected, which will affect the connection strength of the flange forging and cause damage to the flange connection. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an impact-resistant neck flange forging for oil pipelines that can resist the impact exerted on the outer wall of the oil pipeline and the impact generated by the flow of oil inside the oil pipeline through the elastic force of the internal buffer spring of the connector, thereby reducing the probability of damage to the flange connection due to impact and improving the connection strength and service life of the flange forging.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An impact-resistant necked flange forging for oil pipelines includes a connecting flange cover, a necked flange ring, and an impact-resistant connector for connecting the connecting flange cover and the necked flange ring. Multiple impact-resistant connectors are circumferentially arranged around the connecting flange cover and the necked flange ring. Each impact-resistant connector includes a mounting component fixedly connected to the connecting flange cover, a fixing pin disposed inside the mounting component, and a connecting pin connected to the necked flange ring. The connecting pin is installed inside the fixing pin, and a buffer spring is provided between the fixing pin and the connecting pin.

[0008] The present invention is further configured such that: the fixing pin is fixedly connected to the mounting component, the fixing pin has a through groove inside, and the connecting pin is arranged along the through groove.

[0009] The present invention is further configured such that: a buffer groove is provided inside the fixing pin near the connecting pin, and the diameter of the buffer groove is larger than the diameter of the through groove.

[0010] The present invention is further configured such that: the buffer spring is sleeved on the connecting pin, the buffer spring is disposed inside the buffer groove, and a gasket is disposed between the buffer spring and the top wall of the buffer groove.

[0011] The present invention is further configured such that: a plurality of first mounting plates are provided at the positions corresponding to the positions of the connecting flange cover and the impact-resistant connecting parts, a first mounting groove is formed between two adjacent first mounting plates, the bottom of the mounting part is fixedly connected to the first mounting plate, and the fixing pin is provided inside the first mounting groove.

[0012] The present invention is further configured such that: a plurality of second mounting plates are provided at the positions corresponding to the positions of the necked flange ring and the impact-resistant connector, and a second mounting groove is formed between two adjacent second mounting plates.

[0013] The present invention is further configured such that: a fastening bolt is connected to the end of the connecting pin, and the fastening bolt passes through the second mounting plate.

[0014] The beneficial effects of this utility model are:

[0015] By installing a buffer spring on the fixing pin, the spring force generated by the compression of the buffer spring can offset the impact of the impact exerted by the outer wall of the oil pipeline and the impact generated by the flow of oil inside the oil pipeline on the impact-resistant connector. This reduces the probability of damage caused by impact at the connection between the flange cover and the necked flange ring, and improves the connection strength and service life of the flange forging. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a structural schematic diagram of the impact-resistant necked flange forging for oil pipelines according to this utility model.

[0018] Figure 2 for Figure 1 The front view shown.

[0019] Figure 3 For along Figure 2 A cross-sectional view showing section line AA.

[0020] Figure 4 for Figure 3 A magnified view of a portion of region B shown.

[0021] Figure 5 for Figure 1 The diagram shows the structure of the connecting flange cover.

[0022] Figure 6 for Figure 5 The figure shows a cross-sectional view of the connecting flange cover.

[0023] Figure 7 for Figure 1 The diagram shows a cross-sectional view of the necked flange ring and the impact-resistant connector.

[0024] Explanation of reference numerals in the attached drawings: 1. Connecting flange cover; 11. First mounting plate; 12. First mounting groove; 13. First fitting groove; 14. Butt ring;

[0025] 2. Necked flange ring; 21. Second mounting plate; 22. Second mounting groove; 23. Second fitting groove; 24. Butt joint groove;

[0026] 3. Impact-resistant connectors; 31. Mounting parts; 32. Fixing pins; 33. Through grooves; 34. Buffer grooves; 35. Gaskets; 36. Buffer springs; 37. Connecting pins; 38. Fastening bolts; 39. Nuts. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Please refer to Figure 1An impact-resistant necked flange forging for oil pipelines includes a connecting flange cover 1, a necked flange ring 2, and an impact-resistant connector 3 for connecting the connecting flange cover 1 and the necked flange ring 2. The flange cover 1 and the necked flange ring 2 are respectively connected to the oil pipeline, and the flange cover 1 and the necked flange ring 2 are connected by the impact-resistant connector 3.

[0029] Please refer to Figure 1-6 Multiple first mounting plates 11 are provided at positions corresponding to the impact-resistant connector 3 on the side wall of the connecting flange cover 1, and the first mounting plates 11 are fixedly connected to the side wall of the connecting flange cover 1. A first mounting groove 12 is formed between two adjacent first mounting plates 11, and the spacing between the first mounting grooves 12 is smaller than the spacing on the other side of the first mounting plates 11. A first fitting groove 13 is provided on the inner wall of the connecting flange cover 1, and the first fitting groove 13 is arranged circumferentially along the connecting flange cover 1, and the cross-section of the first fitting groove 13 is triangular. A mating ring 14 is provided on the bottom wall of the connecting flange cover 1, and the mating ring 14 is arranged circumferentially along the connecting flange cover 1.

[0030] Please refer to Figure 1-4 and Figure 7 Multiple second mounting plates 21 are provided on the side wall of the necked flange ring 2 at positions corresponding to the impact-resistant connector 3. The second mounting plates 21 are fixedly connected to the side wall of the necked flange ring 2. A second mounting groove 22 is formed between two adjacent second mounting plates 21, and the spacing between the second mounting grooves 22 is smaller than the spacing on the other side of the first mounting plates 11. The spacing between the second mounting grooves 22 is consistent with that of the first mounting grooves 12, and corresponds to the positions of the first mounting plates 11 on the side wall of the connecting flange cover 1 and the second mounting plates 21 on the side wall of the necked flange ring 2, ensuring accurate positioning when the connecting flange cover 1 and the necked flange ring 2 are connected. A second fitting groove 23 is provided on the inner wall of the necked flange ring 2, and the second fitting groove 23 is arranged circumferentially along the connecting flange cover 1. The first fitting groove 13 has a triangular cross-section. A fitting strip is provided on the connecting flange cover 1 at a position corresponding to the second fitting groove 23, and a fitting strip is provided on the neck flange ring 2 at a position corresponding to the first fitting groove 13. After the connecting flange cover 1 and the neck flange ring 2 are fitted together, the first fitting groove 13 and the second fitting groove 23 are fitted with the fitting strips respectively. A mating groove 24 is provided on the top wall of the neck flange ring 2, and the mating groove 24 is arranged circumferentially along the neck flange ring. The shape of the mating groove 24 is adapted to the mating ring 14. When the connecting flange cover 1 and the neck flange ring 2 are fitted together, the mating ring 14 is fitted inside the mating groove 24. A sealing gasket can be provided between the mating ring 14 and the mating groove 24 to ensure reliable connection between the connecting flange cover 1 and the neck flange ring 2.

[0031] Please refer to Figure 1-4 and Figure 7Multiple impact-resistant connectors 3 are arranged circumferentially around the connecting flange cover 1 and the necked flange ring 2. Each impact-resistant connector 3 includes a mounting part 31 fixedly connected to the connecting flange cover 1, a fixing pin 32 disposed inside the mounting part 31, and a connecting pin 37 connected to the necked flange ring 2. The bottom of the mounting part 31 is fixedly connected to the first mounting plate 11. A threaded through groove is formed inside the mounting part 31. The fixing pin 32 is disposed inside the first mounting groove 12 and fixedly connected to the mounting part 31. The connecting pin 37 is installed inside the fixing pin 32. A through groove 33 is formed inside the fixing pin 32. The connecting pin 37 is disposed along the through groove 33. A nut 39 is provided at the end of the connecting pin 37 to limit its movement. The diameter of the end of the connecting pin 37 inside the fixing pin 32 is smaller than the diameter of the end of the connecting pin 37 away from the fixing pin 32. A through hole is formed at the end of the connecting pin 37 away from the fixing pin 32, and a fastening bolt 38 is connected to the through hole at the end of the connecting pin 37. The end of the connecting pin 37 is located inside the second mounting groove 22, and the fastening bolt 38 passes through the second mounting plate 21, thereby fixing the connecting pin 37 to the second mounting plate 21. A buffer groove 34 is provided inside the fixing pin 32 near the connecting pin 37, and the diameter of the buffer groove 34 is larger than the diameter of the through groove 33. A buffer spring 36 is provided between the fixing pin 32 and the connecting pin 37, sleeved on the connecting pin 37 and located inside the buffer groove 34. A gasket 35 is provided between the buffer spring 36 and the top wall of the buffer groove 34. When using the impact-resistant connector 3, first pass the connecting pin 37 through the through groove 33 on the fixing pin 32, then press the connecting flange cover 1 and the necked flange ring 2 to tighten the sealing gasket between the mating ring 14 and the mating groove 24. Then, limit the end of the connecting pin 37 with a nut, at which point the nut 39 abuts against the top of the fixing pin 32. When the through hole on the connecting pin 37 aligns with the hole on the second mounting plate 21, the fastening bolt 38 is passed through the connecting pin 37 and the second mounting plate 21 to fix the connecting pin 37, thus completing the connection between the connecting flange cover 1 and the necked flange ring 2, ensuring reliable sealing between them. When the necked flange forging is used to connect oil pipelines, regardless of whether the impact is applied externally to the pipeline or generated by the flow of oil within the pipeline, when the impact exceeds the elastic limit of the sealing gasket between the mating ring 14 and the mating groove 24 at the connection point of the connecting flange cover 1 and the necked flange ring 2, the fixing pin 32 continuously presses downwards relative to the connecting pin 37, and the nut 39 separates from the top of the fixing pin 32. During this process, the elastic force generated by the pressure of the buffer spring 36 against the fixing pin 32 and the gasket 35 resists the impact applied to the outer wall of the oil pipeline and the impact generated by the flow of oil within the pipeline, reducing the probability of damage to the flange connection due to impact, thereby improving the connection strength and service life of the flange forging. After the impact is offset, the fixing pin 32 is reset under the elastic force of the buffer spring 36 and re-aggregates with the nut 39.

[0032] By setting a buffer spring 36 on the fixing pin 32, when the impact-resistant connector 3 is subjected to the impact of the outer wall of the oil pipeline and the impact generated by the oil flow inside the oil pipeline, the elastic force generated by the compression of the buffer spring 36 can be used to offset the impact, thereby reducing the probability of damage to the connection between the connecting flange cover 1 and the necked flange ring 2 caused by impact, and improving the connection strength and service life of the flange forging.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An impact-resistant necked flange forging for oil pipelines, characterized in that: The device includes a connecting flange cover (1), a necked flange ring (2), and an impact-resistant connector (3) for connecting the connecting flange cover (1) and the necked flange ring (2). Multiple impact-resistant connectors (3) are arranged circumferentially around the connecting flange cover (1) and the necked flange ring (2). Each impact-resistant connector (3) includes a mounting part (31) fixedly connected to the connecting flange cover (1), a fixing pin (32) disposed inside the mounting part (31), and a connecting pin (37) connected to the necked flange ring (2). The connecting pin (37) is installed inside the fixing pin (32), and a buffer spring (36) is provided between the fixing pin (32) and the connecting pin (37).

2. The impact-resistant necked flange forging for oil pipelines according to claim 1, characterized in that: The fixing pin (32) is fixedly connected to the mounting part (31), and the fixing pin (32) has a through groove (33) inside, and the connecting pin (37) is set along the through groove (33).

3. The impact-resistant necked flange forging for oil pipelines according to claim 2, characterized in that: The fixed pin (32) has a buffer groove (34) on the side near the connecting pin (37) inside, and the diameter of the buffer groove (34) is larger than the diameter of the through groove (33).

4. The impact-resistant necked flange forging for oil pipelines according to claim 3, characterized in that: The buffer spring (36) is sleeved on the connecting pin (37), the buffer spring (36) is disposed inside the buffer groove (34), and a gasket (35) is disposed between the buffer spring (36) and the top wall of the buffer groove (34).

5. The impact-resistant necked flange forging for oil pipelines according to claim 1, characterized in that: The connecting flange cover (1) has multiple first mounting plates (11) at the corresponding positions of the impact-resistant connector (3). A first mounting groove (12) is formed between two adjacent first mounting plates (11). The bottom of the mounting component (31) is fixedly connected to the first mounting plate (11). The fixing pin (32) is located inside the first mounting groove (12).

6. The impact-resistant necked flange forging for oil pipelines according to claim 1, characterized in that: Multiple second mounting plates (21) are provided at the corresponding positions of the neck flange ring (2) and the impact-resistant connector (3), and a second mounting groove (22) is formed between two adjacent second mounting plates (21).

7. The impact-resistant neck flange forging for oil pipelines according to claim 6, characterized in that: The end of the connecting pin (37) is connected to a fastening bolt (38), which is installed through the second mounting plate (21).

Images