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In the fast-developing modern, many engineering pipelines need to be equipped with compensators to adjust the thermal expansion and contraction of the pipeline. The pipeline must be provided with thermal expansion compensation devices at certain distances to reduce and release the stress generated when the pipeline is thermally expanded. , to ensure that the pipeline works stably and safely under heat. The installation of the compensator and the hanger should be carried out in strict accordance with the construction regulations. Improper installation often causes the compensator to lose its proper function, which brings safety hazards to the operation of the pipeline. This article will explain the correct installation method of common compensators.
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1. Natural compensator The natural compensator is divided into an L-shaped compensator, a Z-shaped compensator and a spatial stereo-bend compensator according to the shape. There is a 90°~135° elbow on the pipeline called the L-shaped compensator. There are two inverted 90° bends on the pipeline called the Z-shaped compensator. The natural compensator utilizes the natural bending of the heat pipe to eliminate the expansion and contraction amount of the pipe due to the introduction of the heat medium. It is composed of a bent pipe (or elbow) in the pipe, and has the advantages of simple structure, convenient manufacture and installation, and safety. reliable. Designers will give priority to the choice of this natural compensator. The natural compensator is the simplest to install, but it takes up a lot of space and has certain limitations.
2. Square compensator The square compensator can be installed in the overhead and trench sections. When used in direct burial, it must be used as a cavity or a non-passing trench. Otherwise, the insulation layer is used for compensation, and the compressible thickness of the insulation layer is used for compensation. Causes a hidden danger or damages the pipeline. Holes or soft backfilling in natural compensation are also essential. When the square compensator is spliced ​​with elbows, welds are not allowed in the hl of the horizontal arm; if it is unavoidable, it should be as close as possible to the sides of the elbow. For the vertical arm, the stress in the middle is the smallest, and the splice weld is preferably located in the middle; it should be installed when the pipe of the hl of the two fixed brackets is installed and the fixed bracket meets the force requirements. The cold-drawn welding u should be selected from the starting point of the bending of the compensator by 2m - 2. 5m; the compression before installation is half of the compensation value. The first bracket on both sides of the compensator is a sliding bracket, which should be set at 0. 5 m to 1.0 m from the compensator elbow. The guide and fixed brackets cannot be set. 3. When the corrugated compensator corrugated compensator is installed, it should be based on Compensation zero temperature positioning, compensation zero temperature is the midpoint of the highest and lowest temperature considered in the pipeline design; when the ambient temperature is equal to the compensation zero temperature, it can be installed without pre-tensioning or pre-pressing; if the ambient temperature is higher than the compensation zero temperature Should be pre-compressed, and vice versa.
4. Packing compensator The packing compensator is installed with at least one guiding bracket on both sides to ensure free expansion and contraction during operation, without deviation from the center, and to consider the temperature change during installation, leaving residual shrinkage.
The packing compensator shall be installed strictly along the centerline of the pipeline and shall not be deflected. Otherwise, the intubation and sleeve biting accident of the compensator may occur when the pipeline is put into operation. At least one guide bracket should be provided on both sides of the packing compensator to ensure that the compensator can freely contract without deviation from the center when the pipeline is running. The unidirectional packing compensator shall be installed near the fixed bracket. One end of the sleeve shell faces the pipe fixing bracket, and the telescopic end is connected with the tube that generates thermal expansion. To ensure that the pipe is concentric with the compensator, the telescopic end of the compensator must be set to 1 or 2 Guide bracket. The two-way packing compensator shall be installed in the middle of the two fixed brackets, and one or two guiding brackets shall be provided on both sides. The filler compensator cannula should be installed at the inflow end of the medium, the friction part should be coated with oil, and the non-friction part should be coated with anti-rust paint.
The above is the correct installation method for the common compensator provided by the Jiu'an compensator. Jiu'an has also compiled a lot of knowledge about compensators for everyone. Please pay attention to: http:// Hope that everyone can fully grasp, thus greatly improving the operation level and laying the foundation for the good application of the compensator. Gongyi Jiu'an Compensator is a professional manufacturer of pipe equipment all the year round. We always adhere to the scientific and technological progress and constantly develop and enterprising business policy. Guided by the market, in good faith management, customer first, customer service, benefit the customer, quality first purpose. In order to truly achieve the benefit of the customer and unremitting struggle!
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Correct installation method of common compensator