Safety protection assembly for flange connection oil pipeline

Abstract

A safety protection assembly of a flange connection oil pipeline relates to the technical field of pipeline protection. The outer sleeves of the two half bodies are connected and buckled on the two sides of a pipe connected with a flange through bolts, the two sides of each outer sleeve extend towards the flange pipe to form vertical plates, the outer sleeves are provided with check blocks on the outer sides of the limiting rings respectively, each check block is of a two-half-body structure, the check blocks of the two half bodies are combined together to be buckled on the pipe on one side of the flange, and small holes are machined in inner holes of the check blocks. Stepped holes are machined in the check blocks on the outer sides of the small holes, padding is wound between the stepped holes and the pipe, and glands are installed on the outer sides of the padding. The utility model has the beneficial effects that the conical column of the fastening sleeve is contracted to form interference fit with the pipeline so as to transversely fix the positioning sleeve on the pipeline, the port of the pipeline is sealed through the center head, the filler and the gland, the pressure test can be carried out, the fastening bolt is loosened after the pressure test is finished so as to detach the plugging assembly from the two ends of the pipeline, and the operation is convenient. Operation is simple, plugging is reliable, and the pipeline is not damaged in the pressure testing process.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline protection technical field especially, a kind of safety protection assembly of flange connection oil pipeline. BACKGROUND

[0002] Flange connection is a common pipeline connection mode, generally in order to ensure its safety, generally all choose appropriate gasket material, such as rubber, asbestos or metal gasket, to provide good sealing performance, prevent leakage, oil pipeline often transports distance far, and some flanges will be used at the place inconvenient for observation by worker, and flange connection place leakage problem cannot be handled in time, will cause certain loss to the liquid transported in pipeline, also can cause environmental pollution. SUMMARY

[0003] In order to solve the problem of current oil pipeline flange leakage, the utility model provides a kind of safety protection assembly of flange connection oil pipeline.

[0004] The utility model provides technical scheme: a kind of safety protection assembly of flange connection oil pipeline, including sleeve, sleeve is two half body structures, and the sleeve of two half bodies is connected by bolt and buckled on the both sides of pipe of flange connection, and the vertical plate of sleeve two sides extends to the direction of flange pipe, and the inner wall of sleeve extends two limit rings to the inside of flange two sides, and each installation stopper of limit ring outside of sleeve, stopper is two half body structures, and the stopper of two half bodies is buckled on the pipe of flange one side by being combined together, the outer circle of stopper is slidably connected with the inner hole of sleeve, and small hole is processed in the inner hole of stopper, and the inner diameter of small hole is slightly greater than the outer diameter of pipe, and step hole is processed on the outside of small hole, and filler is wound between step hole and pipe, and the outer side of filler is installed with gland, and gland is connected on vertical plate by bolt, and gland is half body structure;

[0005] Blind hole is opened on the outside of stopper, and positioning pin is arranged in blind hole, and compression spring is sleeved on positioning pin, and the other end of compression spring is abutted on the inside of vertical plate, and stopper and vertical plate are not contacted between them;

[0006] The inner hole diameter of vertical plate is same with step hole, and filler is filled to the inner hole position of vertical plate, and two half body stoppers are opened with strip groove A at contact surface A combining portion with filler, and sealing strip A is installed in two strip grooves A, and vertical plate is opened with strip groove B at contact surface B combining portion with filler, and sealing strip B is installed in two strip grooves B.

[0007] One of the outside of stopper is fixedly connected with ejector rod, and through hole is opened on the vertical plate of this side, and ejector rod extends through the through hole of vertical plate, and ejector rod is connected with the through hole of vertical plate through sealing ring, and travel switch is installed on the outside of ejector rod.

[0008] The beneficial effects of this utility model are as follows: packing is chosen as the seal because it can be wound around the pipe and has low requirements for the surface roughness and dimensional tolerances of the pipe. When there is liquid leakage at the flange, the liquid will push the baffle outward, thereby compressing the packing and strengthening the sealing effect. At the same time, considering that the outer sleeve and the baffle are semi-integral structures, a sealing strip is installed at the joint between the outer sleeve and the half-integral part of the baffle where the packing is located to eliminate the leakage point, ensure the protection effect, and also send out an alarm signal. Attached Figure Description

[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Appendix Figure 2 It is attached Figure 1 Side view;

[0011] Appendix Figure 3 This is a schematic diagram of the structure of the two half-blocks combined together in this utility model;

[0012] Appendix Figure 4 This is a cross-sectional view of the stop block in this utility model;

[0013] Appendix Figure 5 This is a cross-sectional schematic diagram of the two halves of the outer casing joined together in this utility model.

[0014] In the diagram, 1-outer jacket, 2-stop block, 3-packing, 4-gland, 5-limit ring, 6-compression spring, 7-top rod, 8-limit switch, 9-strip groove, 10-vertical plate, 11-sealing strip, 12-contact surface A, 13-contact surface B, 21-step hole, 22-small hole, 23-blind hole, 24-locating pin, 25-strip groove B, 26-sealing strip B. Detailed Implementation

[0015] like Figures 1-4 As shown, a safety protection component for a flange-connected oil pipeline includes an outer sleeve 1, which is a two-part structure. The two parts of the outer sleeve 1 are bolted together and fastened to both sides of the pipe connected to the flange. Vertical plates 10 extend from both sides of the outer sleeve 1 toward the flange pipe. Two limiting rings 5 ​​extend inward from both sides of the inner wall of the outer sleeve 1. A stop block 2 is installed on the outer side of each limiting ring 5 of the outer sleeve 1. The stop block 2 is a two-part structure. The two parts of the stop block 2 are joined together and fastened to the pipe on one side of the flange. The outer circle of the stop block 2 is slidably connected to the inner hole of the outer sleeve 1. The inner hole of the stop block 2 is machined with a small hole 22. The inner diameter of the small hole 22 is slightly larger than the outer diameter of the pipe. The stop block 2 is machined with a stepped hole 21 on the outer side of the small hole 22. The filler 3 is wound between the stepped hole 21 and the pipe. A pressure cap 4 is installed on the outer side of the filler 3. The pressure cap 4 is bolted to the vertical plate 10. The pressure cap 4 is a two-part structure.

[0016] A blind hole 23 is opened on the outer side of the block 2. A positioning pin 24 is provided in the blind hole 23. A compression spring 6 is fitted on the positioning pin 24. The other end of the compression spring 6 is pressed against the inner side of the vertical plate 10. The block 2 and the vertical plate 10 do not contact each other.

[0017] The inner diameter of the vertical plate 10 is the same as that of the stepped hole 21. The packing 3 is filled into the inner hole of the vertical plate 10. The two half-blocks 2 have strip grooves A9 at the joint with the contact surface A12 of the packing 3. Sealing strips A11 are installed in the two strip grooves A9. The vertical plate 10 has strip grooves B25 at the joint with the contact surface B13 of the packing 3. Sealing strips B26 are installed in the two strip grooves B25.

[0018] Safety protection components for the flange-connected oil pipelines are installed on the pipes on both sides of the flange connection. The space formed by the outer sleeve 1, the stop block 2, and the gland 4 with the pipe itself is sealed by the packing 3. The packing 3 is chosen as the seal because it can be wound around the pipe and has low requirements for the surface roughness and dimensional tolerances of the pipe. When there is liquid leakage at the flange, the liquid will push the stop block 2 outward, thereby compressing the packing 3 and strengthening the sealing effect. At the same time, considering that the outer sleeve 1 and the stop block 2 are semi-integral structures, a sealing strip 11 is installed at the semi-integral joint of the outer sleeve 1 and the stop block 2 where the packing 3 is located to eliminate the leakage point and ensure the protection effect.

[0019] One of the stop blocks 2 is fixedly connected to the top rod 7 on the outside. The side plate 10 has a through hole, and the top rod 7 extends out of the through hole of the plate 10. The top rod 7 is connected to the through hole of the plate 10 through a sealing ring. A limit switch 8 is installed on the outside of the top rod 7 on the plate 10. When leakage occurs at the flange connection, the stop block 2 moves outward, and the top rod 7 triggers the limit switch 8 to act, which can send an alarm signal to the control center.

Claims

1. A safety protection component for a flange-connected oil pipeline, comprising an outer sleeve (1), characterized in that: The outer sleeve (1) is a two-part structure. The two-part outer sleeve (1) is fastened to both sides of the flange-connected pipe by bolts. There are vertical plates (10) extending from both sides of the outer sleeve (1) towards the flange pipe. The inner wall of the outer sleeve (1) extends two limiting rings (5) inward from both sides of the flange. There are stop blocks (2) installed on the outer side of the limiting rings (5) of the outer sleeve (1). The stop blocks (2) are two-part structures. The two-part stop blocks (2) are fastened together to the pipe on one side of the flange. The outer circle of the stop block (2) is slidably connected to the inner hole of the outer sleeve (1). The inner hole of the stop block (2) is machined with a small hole (22). The inner diameter of the small hole (22) is slightly larger than the outer diameter of the pipe. The stop block (2) is machined with a stepped hole (21) on the outside of the small hole (22). The step hole (21) and the pipe are wrapped with filler (3). A gland (4) is installed on the outside of the filler (3). The gland (4) is bolted to the vertical plate (10). The gland (4) is a half-part structure. The block (2) has a blind hole (23) on the outside, and a positioning pin (24) is provided in the blind hole (23). A compression spring (6) is fitted on the positioning pin (24). The other end of the compression spring (6) is pressed against the inside of the vertical plate (10). The block (2) and the vertical plate (10) do not contact each other. The inner diameter of the vertical plate (10) is the same as that of the stepped hole (21). The filler (3) is filled into the inner hole of the vertical plate (10). The two half-blocks (2) have a strip groove A (9) at the joint with the contact surface A (12) of the filler (3). A sealing strip A (11) is installed in the two strip grooves A (9). The vertical plate (10) has a strip groove B (25) at the joint with the contact surface B (13) of the filler (3). A sealing strip B (26) is installed in the two strip grooves B (25).

2. The safety protection component for a flange-connected oil pipeline according to claim 1, characterized in that: One of the blocks (2) is fixedly connected to the top rod (7) on the outside. The upright plate (10) has a through hole. The top rod (7) extends out of the through hole of the upright plate (10). The top rod (7) is connected to the through hole of the upright plate (10) through a sealing ring. A limit switch (8) is installed on the outside of the top rod (7) on the upright plate (10).

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