Bellows expansion joint and bellows

A technology of bellows and expansion joints, which is applied in the field of bellows expansion joints and bellows, can solve the problems of bellows instability, inapplicability, inconvenient use, etc., and achieve the goal of avoiding end pipe damage, good connection effect and avoiding damage Effect

Active Publication Date: 2021-12-03
ZHEJIANG YUEDING CORRUGATED TUBE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing metal bellows expansion joints for pipelines mostly use bellows made of austenitic stainless steel to withstand greater working pressure; The sewage is diverted to various small mud storage tanks. During the diversion process, due to the stress on the bellows during work, the bellows will be unstable or damaged, which greatly reduces the service life and work efficiency of the bellows expansion joints. The expansion joints in the prior art are not suitable for use with bellows of different lengths, and the use has relatively large limitations and is not convenient to use
If other materials are used to make bellows, although the service life can be extended, the manufacturing cost is high and it is not suitable for popularization and application

Method used

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  • Bellows expansion joint and bellows
  • Bellows expansion joint and bellows
  • Bellows expansion joint and bellows

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to Figure 1-10, a bellows expansion joint, including an end pipe 1, a first flange 101 and a second flange 102 are respectively provided on the outer walls of both sides of the end pipe 1, and two annular plates are sleeved on the middle outer wall of the end pipe 1 2. The bellows body 103 is sleeved between the first flange 101 and the ring plate 2 and the second flange 102 and the ring plate 2. The outer wall of the end pipe 1 is also provided with a bellows body 103. air bag 603;

[0037] Both the first flange 101 and the second flange 102 are fixedly connected with a first support ear 104, and the outer walls of the two annular plates 2 are connected with a second support ear 201 corresponding to the position of the first support ear 104, The first support ear 104 is connected with the first threaded rod 3, the second support ear 201 is connected with the second threaded rod 4, and the first threaded rod 3 is also provided with a stop rod 404, which is slida...

Embodiment 2

[0047] refer to Figure 1-9 , a bellows expansion joint, including an end pipe 1, a first flange 101 and a second flange 102 are respectively provided on the outer walls of both sides of the end pipe 1, and two annular plates 2 are connected to the middle outer wall of the end pipe 1 , a bellows body 103 is connected between the first flange 101 and the annular plate 2 and between the second flange 102 and the annular plate 2;

[0048] Both the first flange 101 and the second flange 102 are fixedly connected with a first support ear 104, and the outer walls of the two annular plates 2 are connected with a second support ear 201 corresponding to the position of the first support ear 104, The first support ear 104 is connected with the first threaded rod 3, the second support ear 201 is connected with the second threaded rod 4, and the first threaded rod 3 is also provided with a stop rod 404, which is slidably connected to the second threaded rod 404. On the threaded rod 4;

...

Embodiment 3

[0053] refer to Figure 1-9 , a bellows expansion joint, which is basically the same as that in Embodiment 1, furthermore, three sets of first support ears 104 and second support ears 201 are provided, and three sets of first support ears 104 and second support ears 201 are provided Both are respectively provided with a first threaded rod 3 and a second threaded rod 4, by setting three sets of first threaded rods 3 and second threaded rods 4, the force can be more uniform, and setting three sets can make it have a stable triangular shape. Sex, while saving material and space.

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Abstract

The invention relates to the field of bellows, in particular to a bellows expansion joint and its bellows, including an end pipe, the outer walls of both sides of the end pipe are respectively provided with a first flange and a second flange, the end pipe There are two ring plates connected to the outer wall of the middle part, the bellows body is connected between the first flange plate and the ring plate and the second flange plate and the ring plate, and the outer wall of the end pipe is also provided with an air bag that matches the bellows body ; A first threaded rod is connected to the first support ear, a second threaded rod is connected to the second support ear, a limit rod is also provided on the first threaded rod, and the limit rod is slidably connected to the second threaded rod; A second spring is provided between the knob and the second knob, and a fixing assembly is provided on the first knob and the second knob; the present invention is applicable to bellows of different lengths, and has a certain buffering effect, which can avoid bellows It is more convenient to use when it is unstable or damaged under force.

Description

technical field [0001] The invention relates to the field of bellows, in particular to a bellows expansion joint and the bellows. Background technique [0002] At present, bellows expansion joints are widely used in metallurgical blast furnace gas delivery systems, coke oven gas delivery systems and converter gas delivery systems to compensate for the displacement of bellows caused by thermal expansion and contraction of pipelines or equipment due to the influence of temperature, ensuring that the system Working safely and reliably, the bellows expansion joint is the compensator of the conveying pipeline, and the bellows is the compensating element of the expansion joint. [0003] The existing metal bellows expansion joints for pipelines mostly use bellows made of austenitic stainless steel to withstand greater working pressure; The sewage is diverted to various small mud storage tanks. During the diversion process, due to the stress on the bellows during work, the bellows ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L51/02F16L55/02F16L23/00
CPCF16L23/006F16L51/022F16L55/02
Inventor 梁艳艳
Owner ZHEJIANG YUEDING CORRUGATED TUBE
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