Introduction to sleeve type compensator

Sleeve type compensator, also known as tubular expansion joint, is a compensation device for thermal fluid pipelines, mainly used as an auxiliary device for linear pipelines. The sleeve type compensator is suitable for hot water, steam, grease and other media. It compensates for thermal expansion through the sliding movement of the outer sleeve through the sliding sleeve.

The sleeve type compensator is suitable for medium engineering pressure ≤ 2.5MPa, and medium temperature - 40 ℃~600 ℃.

Sleeve type compensator The sleeve type compensator uses a new sealing material, flexible graphite ring, which has the characteristics of high strength, low friction coefficient (0.04-0.10), non aging, good effect, and convenient maintenance.

The sleeve type compensator has a long service life and a fatigue life comparable to that of the pipeline. After special treatment, the sliding surface has good corrosion resistance in saline water, salt solution, and other environments, which is more than 50 times higher than austenitic stainless steel. At the same time, when the sealing effect is weakened due to wear after many years, the flange can be tightened again to enhance the sealing performance. Alternatively, the bolt can be loosened, the pressure ring can be removed, and then one or two layers of sealing rings can be installed, and the pressure ring can be pressed tightly for continued use.

The sleeve type compensator has no requirements for chloride ion content, and is particularly suitable for systems with excessive chloride ions in the medium or surrounding environment.

The sleeve type compensator is divided into one-way and two-way compensation structures. The two-way type is characterized by that no matter which end the medium flows from, the sliding sleeves at both ends always slide freely to achieve two-way compensation and increase the compensation amount.

The directly buried sleeve type compensator can be directly buried underground, and it can be installed without installing a maintenance well, resulting in low engineering cost.

Purpose of sleeve type compensator

Sleeve type compensator, called tubular expansion joint, is a compensation device for thermal fluid pipelines, mainly used as an auxiliary device for linear pipelines. It is suitable for hot water, steam, grease and other media to compensate for thermal expansion through the sliding movement of the outer sleeve through the sliding sleeve.

The sleeve type compensator has no requirements for chloride ion content, and is particularly suitable for systems with excessive chloride ions in the medium or surrounding environment. The products are widely used in industries such as petroleum, chemical industry, steel, metallurgy, machinery, transportation, transportation, ships, wharves, construction, rubber, paper making, textiles, electric power heating network, pharmaceuticals, medical treatment, etc.

1. When installing a sleeve type compensator, first check whether its specification is consistent with the order.

2. The sliding sleeve of the one-way compensator should be installed at the inflow end of the medium.

3. The pipe section welded to both ends of the sleeve type compensator needs to undergo groove treatment. After welding, a hydraulic test should be conducted according to the acceptance specification, with a pressure of 1.5 times the working pressure. If the sealing device leaks during the pressure test, the bolts should be evenly tightened until there is no leakage.

4. The sleeve type compensator is installed along the pipeline, with different axial degrees greater than 1%, to prevent excessive friction during operation and affect the sealing performance.

5. Guide sliding bearings shall be provided at the pipe close to the compensator to prevent lateral displacement.

6. Pay attention to protecting the sliding surface, and avoid bumping or corrosion.

7. The outer sleeve of the two-way compensator should be supported by a fixed support and kept concentric with the pipeline. The compensation distance on both sides should be approximately the same.

8. The sleeve type compensator can be installed with a larger length Lmax at various temperatures, without pretensioning or preloading (the product is shipped with a larger length).

Use and maintenance of sleeve type compensator

1. During pipeline operation of sleeve type compensator, the sliding sleeve of the compensator is strictly prohibited from being subjected to external lateral thrust. It should always be concentric with the axial direction of the pipeline and avoid situations that hinder the normal sliding of the sliding sleeve.

2. During the maintenance of the sleeve type compensator, the sealing device should be inspected and the bolts should be tightened in a timely manner to ensure that there is no leakage in the seal.

3. Sleeve type compensator When the sliding sleeve surface of the compensator is severely corroded and the anti leakage effect is not obvious after tightening the bolts, replacement of the compensator should be considered.

Introduction to sleeve type compensator

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