Expansion amount measuring and presetting method and device for pi-shaped pipe expansion joints

A technology of expansion joints and π-shaped tubes, which is applied in the measurement and preset fields of pipeline components, can solve problems such as failure to realize and utilize the compensation potential of expansion joints, difficult control of preset expansion accuracy, and deformation of π-shaped tubes. Achieve the effect of reducing installation cost, saving space and reducing quantity

Pending Publication Date: 2018-01-12
WUHUAN ENG
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Generally considered according to the free state, the compensation amount is based on the elongation under pressure and temperature, and the compensation potential of the expansion joint has not been brought into play and utilized.
In addition, if simply and

Method used

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  • Expansion amount measuring and presetting method and device for pi-shaped pipe expansion joints
  • Expansion amount measuring and presetting method and device for pi-shaped pipe expansion joints
  • Expansion amount measuring and presetting method and device for pi-shaped pipe expansion joints

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be further explained:

[0030] The two ends of the telescopic adjuster are respectively connected to the locking mechanism through the connecting bracket 11, the photoelectric range finder 1 is installed on the connecting bracket 11 on one side through the photoelectric range finder seat 5, and the distance measuring refraction plate 2 is installed on the On the connecting bracket 11 on the other side, the distance-measuring refraction plate 2 is coated with white coating, and the distance measurement accuracy is ±0.01mm.

[0031] The locking mechanism includes a V-shaped fixed limit seat 6 located at the end of the connecting bracket 11, a rope fastening mechanism 4, a locking rope 3 connected to the rope fastening mechanism 4 at one end, and another locking rope 3 with the locking rope 3. The rope lock hook 7 that one end is articulated. The rope fastening mechanism 4 is composed of a rope hub...

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Abstract

The invention discloses an expansion amount measuring and presetting method and device for pi-shaped pipe expansion joints. According to the technical scheme, a photoelectric distance measuring instrument and a corresponding distance measuring refraction plate are included, and an expansion and contraction adjustor is further included. The two ends of the expansion and contraction adjustor are connected with locking mechanisms through connecting supports correspondingly. The photoelectric distance measuring instrument is arranged on the connecting support on one side through a photoelectric distance measuring instrument base, and the distance measuring refraction plate is arranged on the connecting support on the other side. The device is simple, low in cost and high in precision. According to the method, operation is convenient, the installing number of the pi-shaped pipe expansion joints can be effectively reduced, the pipe system space is effectively saved, and the expansion amountmeasuring and presetting method and device are particularly suitable for expansion amount measuring and presetting during high-temperature and high-pressure pi-shaped pipeline constructing and repairing.

Description

technical field [0001] The invention relates to a method for measuring and presetting a pipeline component, in particular to a method for measuring and presetting the expansion amount of a π-shaped pipe expansion joint. Background technique [0002] In petrochemical and urban thermal systems, a large number of high-temperature pipes use various expansion joints to solve the problem of thermal expansion due to thermal expansion. Generally, corrugated expansion joints are mostly used in medium and low pressure heat and chemical pipelines. For medium and high pressure high-temperature pipelines, it is more economical and reliable to use π-type tubes for thermal expansion compensation, so this kind of π-type tube compensator is generally used in this case. Especially relative to various corrugated expansion joints, the preset expansion of π-type pipe compensators for medium and high pressure high temperature pipelines in the initial installation has been neglected. Generally c...

Claims

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Application Information

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IPC IPC(8): F16L51/00G01B11/00
Inventor 王超刘三军江大波章安杰姜霞
Owner WUHUAN ENG
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