Type testing project for rotary compensators

The type testing project for rotary compensators are comprehensive process that ensures the product meets all necessary standards and specifications.

1.Technical Document Review

The type testing of rotary compensators involves a thorough review of technical documents to ensure the product meets all required standards and specifications. This review includes:

(1)Design Condition Assessment: Examination of design parameters, product standards, and any special technical requirements to ensure the product is fit for its intended use.

(2)Design Calculation Method and Selection: Verification of the design calculation methods used, ensuring they are appropriate and correctly applied.

(3)Material Selection for Key Components: Evaluation of the materials chosen for the key parts of the sample, ensuring they meet the necessary standards for strength and durability.

(4)Strength Calculations and Structural Design: Analysis of strength calculations and structural design, including the pressure-bearing strength of the core tube, outer tube, and concentric reducers, as well as the external pressure stability of the core tube and anti-disengagement structures.

(5)Sealing Material Selection and Sealing Structure Design: Assessment of the sealing materials used and the design of the sealing structure to ensure leak-proof operation under expected conditions.

(6)Process Documentation for Welding, Heat Treatment, and Assembly: Review of the process documents related to welding, heat treatment, and assembly, ensuring that the manufacturing process meets quality standards.

(7)Inspection and Testing Procedures: Evaluation of inspection and testing procedures, including non-destructive testing and pressure testing, to ensure product reliability.

rotary compensators

2.Inspection and Testing

The inspection and testing phase is critical in verifying the quality and safety of rotary compensators. It includes:

(1)Identification and Appearance: Checking the product identification and visual inspection to ensure there are no defects or deviations from the design.

(2)Chemical Composition and Mechanical Properties of Raw Materials: Testing the chemical composition and mechanical properties of the raw materials to ensure they meet the required standards.

(3)Geometric Dimensions: Measuring the geometric dimensions, including the wall thickness of the core tube and connecting pipes, the roundness and circumference tolerance of the core tube, and the overall length tolerance.

(4)Non-Destructive Testing: Conducting non-destructive testing to identify any potential internal defects that could affect the product’s performance.

(5)Pressure Testing: Performing pressure tests to verify the product’s ability to withstand the required pressure levels without failure.

(6)Leakage Testing: Conducting leak tests to ensure the compensator is airtight and will not leak under operational conditions.

(7)Fatigue Life Testing: Evaluating the fatigue life of the product to determine its durability over time and under repeated stress.

3.Sampling Rules

Sampling for testing should be done carefully to ensure representativeness:

Representative Forming Processes: The selected samples should represent the most typical forming processes. Products with higher pressure ratings should be selected when possible.

rotary compensators

4.Coverage Range

The coverage range for the type testing must meet the following conditions:

(1)Forming Method Coverage: The forming method of the sample should be the same or similar to the products being tested (e.g., molded rubber expansion joints, wound expansion joints, etc.). Different forming methods cannot cover each other.

(2)Specification and Pressure Rating Coverage: The applicable nominal pressure and nominal size should follow these guidelines:

When PN ≤ 2.5 MPa: DN* ≤ 2DN and PN* ≤ 2.5 MPa.

When PN > 2.5 MPa: DN* ≤ 2DN and PN* ≤ PN.

(Note: PN and PN refer to the nominal pressure of the sample and the products within the coverage range, respectively. DN and DN* refer to the nominal size of the sample and the products within the coverage range, respectively.)*

By thoroughly reviewing technical documents, conducting rigorous inspections and tests, and adhering to strict sampling rules, we can guarantee that the rotary compensators produced by Haihao Group are reliable, safe, and fit for their intended use in pressure piping systems.