Plastic high-pressure testing machine

Plastic high-pressure testing machineOverview:

Plastic high-pressure testing machineThe product has the characteristics of beautiful appearance, simple structure, high precision, good stability, and easy operation. It is a product of various research institutes, quality inspection departments, and pipe manufacturersThe testing equipment.

The XGY-10B series is manufactured according to the requirements of GB/T6111-85 "Method for determining the resistance time of thermoplastic pipes under long-term constant internal pressure", and is used to measure plastic pipes, composite pipes (such as PP-R, PP-B, PP-A, PZ-X, PB, PVC and aluminum-plastic composite pipes, etc.). The pressure resistance failure time under long-term constant internal pressure is determined by plastic pipe production plants and testing institutionsTesting equipment.This machine adopts a hydraulic (medium is water) system for pressurization, which is safe and reliable. The key measurement and control components are selected from imported parts, which improves the overall measurement and control accuracy and long-term reliability. It can achieve independent pressure control for various channels, without affecting each other after rupture, and can simultaneously perform multiple tests of different specifications, with a high cost performance ratio.

Technical Description of Pipe Static Hydraulic Testing Machine

1. Modular design of pressure control circuit: Our company has developed a specialized instrument control module that eliminates the design of discrete components, making it easier to maintain, with low failure rate, simplicity, and features that other manufacturers do not have

• The communication protocol has a high frequency of 19200bps, which can quickly connect with computers for operation and data transmission;

• Long data storage time, 10000 hours of data storage, surpassing the storage time of other manufacturers; The data recording frequency is 1 second, with precise counting, while other manufacturers record it in 1 minute, with accurate records of sample rupture;

• When the static hydraulic host works for a long time (such as 1000 hours), the computer can be turned off. As long as the host works, after the experiment is completed, the computer can be turned on to download data, print test results, and extend the service life of the computer. (Other manufacturers cannot turn off the computer after 200 hours, otherwise data cannot be recorded)

• Dustproof, waterproof and fog resistant, independent power supply, no interference with each other, and any problems on one route will not affect the continued operation of other routes for testing.

• Automatic data saving function before power outage, data will not be lost after incoming call;

• To ensure the accuracy of pressure, an 8-point correction function is used for pressure calibration, which is adjusted step by step; Control accuracy: 10MP *, accuracy is 0001MPa; 16MP*， The accuracy is 0.01MPa.

• There are multiple control modes with functions such as operation, stop, leakage, overvoltage warning, and rupture recognition, enabling operators to leave the experimental site during the testing process. When the sample leaks or ruptures, an automatic alarm will sound and the circuit will be automatically closed. Other tests will continue to proceed normally until the end of the test.

working principle

The working principle of this machine is:

1) Set the control pressure and range of the main pressure instrument to ensure that the pressure source provides a pressure higher than the maximum pressure of the branch2～3MPaThe pressure is stored in the accumulator.

2) Calculate the test pressure according to the ring stress requirements of the sample, and set the control pressure and range of the branch pressure instrument accordingly. After operation, the instrument controls the solenoid valve to be fully conductive, causing the pressure of the sample to rise rapidly. When the set pressure is reached, enter the pressure replenishment stage.

3) During the pressure replenishment stage, the solenoid valve intermittently conducts based on instrument data, allowing the pressure in the pressure source accumulator to be replenished into the sample.

4) When the pressure of the pressure source drops below the set pressure, the plunger pump starts working and stops working.

5) This machine also has functions such as operation, stop, leakage warning, and rupture recognition, allowing operators to leave the experimental site during the testing process. When the sample leaks or ruptures, an automatic alarm will sound and the circuit will be automatically closed. Other tests will continue to proceed normally until the test is completed. It has excellent performance price ratio among similar models and is an ideal product to replace imports.

6) The machine has a serial port that can be equipped with an external computer, which can draw pressure time curves, real-time query control pressure values, print and output reports, and replace manual duties. When the computer machine stops working, the instrument can still continue to work. But the computer does not directly control the solenoid valve, it must be controlled by an instrument, and the instrument cannot stop working during the test. During the experiment, the computer can be turned off at any time to perform other business tasks, and the host is working normally. When the host is connected to the computer, the host automatically transfers data to the computer without any impact on the experiment.

7) The main heating element inside the water tank ensures the lifespan of the heating tube, while external circulation ensures even water temperature in the tank. The constant temperature medium water tank is divided into two specifications: single heating and cooling/heating. This machine is at room temperature to95^℃

meet the standard：

1）GB/T6111-2003Thermoplastic pipes for fluid transportation Internal pressure resistance test method

2）GB/T18252-2000Determination of long-term static hydraulic strength of thermoplastic pipes using extrapolation method for plastic piping systems

3）GB/T15560-1995Plastic pipes for fluid transportation - Hydraulic instantaneous burst and pressure resistance test method

4）Other standards:ISO1167TheISO9080TheEN921TheASTMD1598TheASTMD1599 ISO13479

5）GB/T184762001 Polyolefin pipes for fluid transportation Determination of crack propagation resistance Test Method for Slow Growth of Cracks in Cut Pipe (Cut Test)

The pictures are for reference only, please refer to the actual product for details.