CN101709820A - Pipeline connection adjustor for eliminating stresses - Google Patents

Abstract

The invention discloses a pipeline connection adjustor for eliminating stresses, which relates to a pipeline connector capable of effectively eliminating various stresses generated in the processes of pipeline laying and application. One end of an adjustable base (1) is a flange, while the other end face is provided with a limiting indicating head (5); a step hole is formed in the adjustable base, and a seal groove is formed in the hole; a seal ring (3) is arranged in the seal groove; the flange of the adjustable base is connected with a pipeline; one end of an adjustable pipe (4) is welded with a waveform pad (2); the adjustable pipe welded with one end of the waveform pad is arranged in a hole of the adjustable base so that the limiting indicating head on the adjustable base is arranged in a gap of an upper limiting indication area (6) of the adjustable pipe; the other end of the adjustable pipe is connected with the pipeline so that the waveform pad is in a compressive state and the left end of the limiting indicating head is in the center of a green area (9); and the limiting indicating area comprises a gap formed at a non-flange end of the adjustable pipe, and left and right red areas (7), left and right yellow areas (8) and the green area which are divided from left to right on two sides of the gap.

Description

A Stress Relief Pipeline Connection Regulator

technical field

The invention relates to a pipeline connector, in particular, it can effectively eliminate various stresses generated during the installation and use of industrial pipelines.

Background technique

Pipelines play an important role in modern industrial production and people's lives, and can be called "arteries" in some industries. Valves, instruments, etc. are installed on many pipelines for metering adjustment and control. Due to pipeline stress factors such as thermal expansion and contraction, installation errors, and component manufacturing tolerances, the tightly sealed valves and instrumentation equipment are often affected by tensile stress, compressive stress, and twisting stress. In actual installation and use, it is sometimes found that: under standard conditions, the valves that pass the verification and have good performance are installed on the pipeline, and there is a phenomenon of "closeness"; the adjustment valve has adjustment deviation; the positive displacement flowmeter has errors or even stuck; more The most serious thing is that under special working conditions, although the working pressure is far lower than the nominal pressure, accidents such as equipment bursting occur.

Contents of the invention

The technical problem to be solved by the present invention is to eliminate various stresses generated during pipeline installation and use, and minimize the damage caused by complex pipeline stress; at the same time, it facilitates the installation, disassembly and adjustment of pipeline equipment such as instruments and valves, and relieves water hammer effect.

Technical scheme of the present invention:

A pipeline connection regulator for stress relief, the connection regulator includes: an adjustment seat, a wave pad, a sealing ring, an adjustment tube, a limit indicating head, and a limit indicating area.

One end of the adjustment seat is a flange, the other end face is provided with a limit indicating head, a step hole is arranged in the adjustment seat, a sealing groove is arranged in the hole, a sealing ring is installed in the sealing groove, and the flange of the adjustment seat is connected to the pipeline.

One end of the adjustment tube is welded to the wave pad, and the adjustment tube welded to the end of the wave pad is placed in the hole of the adjustment seat, so that the limit indicator head on the adjustment seat is placed in the gap in the upper limit indication area of the adjustment tube, and the adjustment tube After the other end is connected to the pipeline, the wave pad is in a compressed state, and the left end of the limit indicating head is in the center of the green area.

The limit indication area includes the notch at the non-flange end of the adjustment tube and the two sides of the notch. From left to right, it is divided into left red area, left yellow area, green area, right yellow area, and right red area; the green area indicates the normal position , the yellow area indicates the warning position, and the red area indicates the dangerous position.

The width of the left red area, left yellow area, green area, right yellow area and right red area of the limit indication area is 3mm.

The notch width of the non-flange end of the adjusting tube is 8mm, and the notch length of the non-flange end of the regulating tube is 18mm; the width of the limit indicating head is 5mm, and the length of the limit indicating head is l=16mm.

Beneficial effects of the present invention:

1. Flowmeters and regulating valves on pipelines in petroleum, petrochemical, chemical and other departments are usually installed in a three-valve type, and the adverse effects of pipeline stress exist objectively; at the same time, it is very troublesome to remove them for maintenance regularly, and even cause equipment damage. After adopting this technical product, the above-mentioned problems can be easily solved.

2. In the flow precision verification and testing equipment, the use of this technical product will help to improve the stability of the device, and more accurately determine the reproducibility and repeatability of certain products.

3. On some long oil and gas pipelines, the present invention can also play the role of bellows, overcome thermal expansion and contraction stress, and improve the reliability of pipeline work.

Description of drawings

Figure 1 is a front view of a strain relief pipe connection regulator.

Figure 2 is a top view of a stress-relieving pipe connection regulator.

In the figure: joint seat 1, wave pad 2, sealing ring 3, regulating tube 4, limit indicating head 5, limit indicating area 6, left red area 7, left yellow area 8, green area 9, right yellow area 10, Right red zone 11.

Detailed ways

The present invention will be further described in conjunction with accompanying drawing:

A pipe connection regulator for stress relief, as shown in Figures 1 and 2.

A pipe connection regulator for stress relief, the connection regulator includes: an adjustment seat 1 , a wave pad 2 , a sealing ring 3 , an adjustment tube 4 , a limit indicating head 5 , and a limit indicating area 6 .

One end of the adjustment seat 1 is a flange, and a limit indicating head 5 is provided on the other end surface. A stepped hole is arranged in the adjustment seat 1, and a sealing groove is arranged in the hole, and a sealing ring 3 is installed in the sealing groove. The method of the adjustment seat 1 Lan is connected to the pipeline.

One end of the adjustment tube 4 is welded to the waveform pad 2, and the adjustment tube 4 welded to one end of the waveform pad 2 is placed in the hole of the adjustment seat 1, so that the limit indicator head 5 on the adjustment seat is placed in the upper limit indication area 6 of the adjustment tube In the gap, after the other end of the adjustment tube 4 is connected to the pipeline, the wave pad 2 is in a compressed state of 1.5mm, and the left end of the limit indicating head 5 is in the center of the green area 9 .

The limit indicating area 6 includes the notch on the non-flange end of the regulating tube and the two sides of the notch. From left to right, it is divided into a left red area 7, a left yellow area 8, a green area 9, a right yellow area 10, and a right red area 9. And be painted with respective bright colors; Green zone 11 shows and expresses normal position, and yellow zone 10 shows warning position, and red zone shows dangerous position.

The widths of the left red zone 7, the left yellow zone 8, the green zone 9, the right yellow zone 10 and the right red zone 11 of the limit indicating zone 6 are all 3mm.

The notch width of the non-flange end of the regulating tube is 8mm, and the notch length of the non-flange end of the regulating tube is 18mm; the width of the limit indicator head 5 is 5mm, and the length l=16mm of the limit indicator head 5.

When valves, flowmeters and other equipment are installed on the pipeline, install a stress-relieving pipeline connection regulator as required (generally downstream). When the long pipeline expands with heat and contracts with cold or is deformed due to stress, the adjustment seat 1 makes a small amount of sliding or relative rotation relative to the adjustment tube 4, thereby eliminating the possible tensile stress, compressive stress, and torsional stress, and ensuring that the equipment and instruments on the pipeline are not damaged , in normal working condition to ensure the accuracy of measurement. The sealing ring 3 ensures that there is no fluid leakage between the adjustment seat 1 and the adjustment pipe 4 . The limit indicating area 6 indicates the telescopic state of the adjusting seat 1.

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Claims (3)

1. A pipe connection regulator for stress relief, characterized in that the connection regulator includes: an adjustment seat (1), a wave pad (2), a sealing ring (3), an adjustment tube (4), and a limit indicator head (5), limit indication area (6); One end of the adjustment seat (1) is a flange, and a limit indicating head (5) is arranged on the other end surface. A step hole is arranged in the adjustment seat (1), and a sealing groove is arranged in the hole, and a sealing ring ( 3), the flange of the adjusting seat (1) is connected to the pipeline; One end of the adjustment tube (4) is welded to the waveform pad (2), and the adjustment tube (4) welded to one end of the waveform pad (2) is placed in the hole of the adjustment seat (1), so that the limit indicator head on the adjustment seat (5) Place it in the gap of the upper limit indication area (6) of the adjustment tube. After the other end of the adjustment tube (4) is connected to the pipeline, the waveform pad (2) is in a compressed state, and the limit indicator head (5) The left end is in the center of the green zone (9); The limit indication area (6) includes the notch at the non-flange end of the adjustment tube and the two sides of the notch, and is divided into left red area (7), left yellow area (8), green area (9) and right yellow area from left to right. Zone (10), right red zone (9); green zone (11) shows normal position, yellow zone (10) shows warning position, and red zone shows dangerous position. 2. A connector device for eliminating pipeline stress according to claim 1, characterized in that the left red area (7), left yellow area (8), green area ( 9), the width of the right yellow area (10), the right red area (11) is 3mm. 3. A kind of connector device for eliminating pipeline stress according to claim 1, characterized in that, the notch width of the non-flange end of the regulating tube is 8mm, and the notch length of the non-flange end of the regulating tube is 18mm; the limit indicating head ( 5) The width is 5mm, and the length l=16mm of the limit indicating head (5).

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