Safety valve for oil pipeline

Abstract

The utility model relates to the technical field of petroleum conveying pipeline safety, concretely to a petroleum conveying pipeline safety valve, including safety valve main part, the both sides symmetry fixed connection of safety valve main part have flange cap, and the one side of flange cap is inserted with flange plate, and the one side fixed connection of flange plate has conveying pipe, and the one side fixed connection of flange cap has self -locking connection subassembly, and the one side of flange cap and flange plate all is equipped with sealing groove, and the sealing pad is inserted in sealing groove, the petroleum conveying pipeline safety valve of the utility model is mainly through the fixed connection flange cap in safety valve main part both sides, and the flange plate of conveying pipe is connected to the one side of flange cap, and the connection and locking of flange cap and flange plate are realized through the self -locking connection subassembly set up on flange cap, wherein the one -way clamping of ratchet and ratchet wheel disc realizes self -locking, and the locking ring is extruded to flange cap inboard by adjusting screw rod to be screwed into first threaded hole, and the self -locking can be released, realizes the firm connection and self -locking anti -loose function of safety valve and conveying pipe.

Description

Technical Field

[0001] This utility model relates to the field of safety technology for oil pipelines, specifically to a safety valve for oil pipelines. Background Technology

[0002] Safety valves are used in the oil transportation process to deal with high pressure in the pipeline. When the pipeline pressure is too high, the safety valve opens to release a certain amount of pressure, thereby reducing the pressure in the pipeline and ensuring the safety of the transportation pipeline.

[0003] Chinese Patent CN220452811U discloses a safety valve for an oil pipeline, including a lower valve seat with an inlet at its bottom and an outlet pipe on its side. An annular groove with a sealing ring is located on the top of the lower valve seat. An upper valve seat is connected to the lower valve seat via screws, and a valve cap is mounted on the upper valve seat. A pressure relief assembly is located inside both the upper and lower valve seats. The assembly includes a ring inside the lower valve seat with a stop block, a valve stem at the bottom of the stop block, a valve plate at the bottom of the valve stem, and a lower rod body above the stop block. The upper rod body is slidably connected to the lower rod body. This design improves the sealing performance of the oil pipeline safety valve, preventing backflow of liquid between the outlet and inlet when the oil pressure in the pipeline exceeds a specified value.

[0004] The safety valves for oil pipelines described above and under existing technologies typically connect the safety valve and the pipeline via flanges. When high-pressure and high-speed media flow through and generate vibrations, these vibrations can easily loosen the bolts, causing leakage at the safety valve connection and affecting the normal operation of the safety valve. Regular inspection and maintenance of the bolts is usually required, which is very inconvenient. The lack of a corresponding safety valve connection structure with a self-locking function in this area necessitates improvement and optimization. Utility Model Content

[0005] The purpose of this invention is to provide a safety valve for oil pipelines to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety valve for an oil pipeline includes a safety valve body, flange caps are symmetrically and fixedly connected to both sides of the safety valve body, a flange plate is inserted into one side of the flange cap, a conveying pipe is fixedly connected to one side of the flange plate, a self-locking connection assembly is fixedly connected to one side of the flange cap, and a sealing groove is provided on one side of both the flange cap and the flange plate, and a sealing gasket is inserted into the sealing groove.

[0007] Preferably, both the flange cap and the flange are provided with connection holes, the flange is provided with a nut groove on one side, and the flange cap is provided with a first threaded hole and a spring groove on one side.

[0008] Preferably, a positioning groove is provided on one side of the flange cap, and a positioning block is fixedly connected to one side of the flange, with the positioning block inserted into the positioning groove.

[0009] Preferably, the self-locking connection assembly includes a locking ring, a self-locking screw, a ratchet disc, and ratchet teeth; a first spring is fixedly connected to one side of the locking ring, and the first spring is fixedly connected to a spring groove on one side; the self-locking screw is inserted into the locking ring, and the middle part of the self-locking screw passes through a connecting hole; a ratchet disc is fixedly connected to one side of the self-locking screw; a nut is threadedly connected to the other side of the self-locking screw, and one side of the nut is inserted into a nut groove; a ratchet tooth is rotatably connected to one side of the locking ring, and one side of the ratchet tooth is engaged with the ratchet disc.

[0010] Preferably, a spring post is fixedly connected to one side of the locking ring, a second spring is sleeved in the middle of the spring post, one side of the second spring is fixedly connected to the ratchet, and a paddle is fixedly connected to one side of the ratchet.

[0011] Preferably, the locking ring has a second threaded hole on one side, and an adjusting screw is threaded into the second threaded hole, with one side of the adjusting screw corresponding to the first threaded hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The safety valve for oil pipelines proposed in this utility model mainly involves fixing flange caps to both sides of the safety valve body. One side of the flange cap is inserted into a flange plate connected to the conveying pipe. The connection and locking between the flange cap and the flange plate are achieved through a self-locking connection component set on the flange cap. The ratchet disc at one end of the self-locking screw engages with the ratchet teeth to achieve self-locking. When the adjusting screw is screwed into the first threaded hole, the locking ring is pressed inward to the flange cap, thereby releasing the self-locking. This achieves a firm connection between the safety valve and the conveying pipe and a self-locking anti-loosening function. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a safety valve for an oil transportation pipeline;

[0015] Figure 2 An exploded view of the structure of a safety valve for an oil pipeline;

[0016] Figure 3 for Figure 2 Enlarged diagram of part A in the middle;

[0017] Figure 4 for Figure 2 Enlarged diagram of part B in the middle;

[0018] Figure 5 This is a partial structural cross-sectional view of a safety valve for an oil transportation pipeline.

[0019] In the diagram: Safety valve body 1, flange cap 2, flange 3, delivery pipe 4, locking ring 501, self-locking screw 502, ratchet disc 503, nut 504, first spring 505, ratchet tooth 506, spring post 507, second spring 508, second threaded hole 509, adjusting screw 510, toggle block 511, sealing groove 6, sealing gasket 7, connecting hole 8, nut groove 9, first threaded hole 10, spring groove 11, positioning groove 12, positioning block 13. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-5 The present invention provides the following two preferred embodiments:

[0022] Example 1: A safety valve for an oil pipeline includes a safety valve body 1. Flange caps 2 are symmetrically fixedly connected to both sides of the safety valve body 1. A flange plate 3 is inserted into one side of the flange cap 2. A delivery pipe 4 is fixedly connected to one side of the flange plate 3. A self-locking connection assembly is fixedly connected to one side of the flange cap 2. Both the flange cap 2 and the flange plate 3 have a sealing groove 6 on one side, and a sealing gasket 7 is inserted into the sealing groove 6. Both the flange cap 2 and the flange plate 3 have a connection hole 8. A nut groove 9 is provided on one side of the flange plate 3. A first threaded hole 10 and a spring groove 11 are provided on one side of the flange cap 2. A positioning groove 12 is provided on one side of the flange cap 2. A positioning block 13 is fixedly connected to one side of the flange plate 3 and is inserted into the positioning groove 12.

[0023] In use, flange caps 2 are fixedly connected to both sides of the safety valve body 1. A flange plate 3 is inserted into one side of each flange cap 2. A delivery pipe 4 is fixedly connected to one side of the flange plate 3. A sealing groove 6 is provided on the corresponding side of the flange cap 2 and the flange plate 3. A sealing gasket 7 is inserted into the sealing groove 6. The sealing gasket 7 plays a sealing role. When the flange plate 3 is inserted into the flange cap 2, the positioning block 13 on the outside of the flange plate 3 is aligned with the positioning groove 12 on one side of the flange cap 2 to achieve positioning insertion. When the insertion is completed, the connecting hole 8 on the flange cap 2 corresponds exactly to the connecting hole 8 on the flange plate 3, which facilitates the subsequent insertion and connection of the screw.

[0024] Example 2: Based on Example 1, the self-locking connection assembly includes a locking ring 501, a self-locking screw 502, a ratchet disc 503, and ratchet teeth 506. A first spring 505 is fixedly connected to one side of the locking ring 501, and the first spring 505 is fixedly connected to a spring groove 11 on one side. The self-locking screw 502 is inserted into the locking ring 501, and its middle portion passes through the connecting hole 8. A ratchet disc 503 is fixedly connected to one side of the self-locking screw 502, and a nut 504 is threadedly connected to the other side of the self-locking screw 502. One side of the nut 504 is inserted into the connecting hole 8. The nut groove 9 has a ratchet 506 rotatably connected to one side of the locking ring 501, and the ratchet 506 is engaged with the ratchet disc 503 on one side. A spring post 507 is fixedly connected to one side of the locking ring 501, and a second spring 508 is sleeved in the middle of the spring post 507. One side of the second spring 508 is fixedly connected to the ratchet 506, and a lever 511 is fixedly connected to one side of the ratchet 506. A second threaded hole 509 is provided on one side of the locking ring 501, and an adjusting screw 510 is threaded into the second threaded hole 509. One side of the adjusting screw 510 corresponds to the first threaded hole 10.

[0025] In use, after the flange cap 2 and flange 3 are inserted, the self-locking screw 502 is inserted into the connecting hole 8 from one side of the flange cap 2, and the nut 504 is inserted into the nut groove 9. The self-locking screw 502 and nut 504 are then tightened. The ratchet disc 503, fixedly connected to one side of the self-locking screw 502, engages with the ratchet tooth 506. The ratchet tooth 506 ensures that the ratchet disc 503 and self-locking screw 502 can only be tightened in one direction and cannot be loosened. Under the pull of the second spring 508, the ratchet tooth 506 is engaged in one direction within the ratchet disc 503, preventing vibration from causing the self-locking screw 502 to loosen. When using the self-locking screw 502, the lever 511 needs to be manually moved to prevent the ratchet 506 from blocking the ratchet disc 503. When it is necessary to disassemble the safety valve body 1, simply tighten the adjusting screw 510. The adjusting screw 510 will drive the locking ring 501 to move towards the flange cap 2. The locking ring 501 will compress the first spring 505. When the adjusting screw 510 is not compressing, the first spring 505 is in its natural state, which makes the ratchet 506 flush with the ratchet disc 503. When the locking ring 501 is compressed, the ratchet 506 disengages from the ratchet disc 503, and the lock is released. At this time, the self-locking screw 502 can be loosened for disassembly.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety valve for an oil pipeline, comprising a safety valve body (1), characterized in that: The safety valve body (1) is symmetrically fixedly connected to two sides of flange caps (2), a flange plate (3) is inserted into one side of the flange caps (2), a conveying pipe (4) is fixedly connected to one side of the flange plate (3), a self-locking connection assembly is fixedly connected to one side of the flange caps (2), and a sealing groove (6) is provided on one side of both the flange caps (2) and the flange plate (3), and a sealing gasket (7) is inserted into the sealing groove (6).

2. The safety valve for an oil pipeline according to claim 1, characterized in that: Both the flange cap (2) and the flange (3) are provided with connection holes (8), the flange (3) is provided with a nut groove (9) on one side, and the flange cap (2) is provided with a first threaded hole (10) and a spring groove (11) on one side.

3. A safety valve for an oil pipeline according to claim 1, characterized in that: The flange cap (2) has a positioning groove (12) on one side, and a positioning block (13) is fixedly connected to one side of the flange (3), and the positioning block (13) is inserted into the positioning groove (12).

4. A safety valve for an oil pipeline according to claim 1, characterized in that: The self-locking connection assembly includes a locking ring (501), a self-locking screw (502), a ratchet disc (503), and ratchet teeth (506). A first spring (505) is fixedly connected to one side of the locking ring (501), and the first spring (505) is fixedly connected to a spring groove (11) on one side. The self-locking screw (502) is inserted into the locking ring (501), and the middle part of the self-locking screw (502) passes through the connecting hole (8). A ratchet disc (503) is fixedly connected to one side of the self-locking screw (502), and a nut (504) is threadedly connected to the other side of the self-locking screw (502). One side of the nut (504) is inserted into the nut groove (9). A ratchet tooth (506) is rotatably connected to one side of the locking ring (501), and one side of the ratchet tooth (506) is engaged with the ratchet disc (503).

5. A safety valve for an oil pipeline according to claim 4, characterized in that: A spring post (507) is fixedly connected to one side of the locking ring (501), and a second spring (508) is sleeved in the middle of the spring post (507). One side of the second spring (508) is fixedly connected to the ratchet (506), and a lever (511) is fixedly connected to one side of the ratchet (506).

6. A safety valve for an oil pipeline according to claim 4, characterized in that: The locking ring (501) has a second threaded hole (509) on one side, and an adjusting screw (510) is threaded into the second threaded hole (509). The adjusting screw (510) is located on one side corresponding to the first threaded hole (10).

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