Safety valve performance testing and safety valve online calibrator calibrating device
A technology for calibrating devices and safety valves, which is applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., and can solve problems such as the inability to accurately measure the inlet pressure and flow rate of calibrating safety valves
Inactive Publication Date: 2016-06-22
HANGZHOU SPECIAL EQUIP INSPECTION & RES INST
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Problems solved by technology
The key factor of the safety valve calibration accuracy of the safety valve online calibrator is the accuracy of the opening criterion, especially the curve inflection point identification method needs to accurately capture the inflection point of the safety valve opening, and the online calibration cannot accurately measure the inlet pressure and flow of the calibration safety valve and other parameters, a set of calibration devices that more precisely simulate the actual working conditions is needed to verify the accuracy of the safety online calibrator
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[0017] The present invention will be further described below in conjunction with drawings and embodiments.
[0018] Such as figure 1 , figure 2 As shown, the present invention includes a plurality of high-pressure gas cylinders 1, a bus bar 2, a shut-off valve 3, a pressure reducing valve 4, a pressure gauge 5, a flow sensor 6, a first flow sensor 7, a safety valve clamping platform 8, a first pressure Sensor 9, adjustment test control panel 10, temperature sensor 11, buffer tank 12, test safety valve 13, second pressure sensor 14, second flow sensor 15, storage tank 16, ball valve 17, safety valve 18, pressure gauge 19, Vent valve 20 and safety valve online calibrator 21.
[0019] A plurality of high-pressure gas cylinders 1 and the bus bar 2 are connected in parallel to form a high-pressure gas source. The outlet of the high-pressure gas source is divided into two paths, and one path passes through the stop valve 3, the pressure reducing valve 4, the pressure gauge 5, the...
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The invention discloses a safety valve performance testing and online calibrator calibrating device. One channel of an outlet of a high pressure air source is connected with an inlet of a buffer bin via a stop valve, a pressure reducing valve, a pressure gage and a flow sensor in sequence while the other channel of the outlet of the high pressure air source is connected with a storage bin via a ball valve. The storage bin is also connected with a safety valve and a pressure gage. A temperature sensor is connected to the buffer bin. An upper outlet of the buffer bin is connected with a clamping table of the safety valve while a lower outlet of the buffer bin is connected with an air release valve. The outlet of the buffer bin is connected with an inlet of the to-be-tested safety valve. A first pressure sensor is connected to an inlet of the to-be-tested safety valve. An outlet of the storage bin is connected with a discharge port of the to-be-tested valve via a second flow sensor and a second pressure sensor. A safety valve online calibrator is mounted on the to-be-tested safety valve. The two pressure sensors, the temperature sensor and the two flow sensors are connected with a calibration testing control screen. By adopting the device provided by the invention, performance of the safety valve can be tested quickly; accuracy of the safety online calibrator can be calibrated; and safety valve performance tests in high-temperature environment and backpressure environment can be simulated.
Description
technical field [0001] The invention relates to a safety valve performance test and verification device, in particular to a safety valve performance test and an online calibrator verification device. Background technique [0002] Safety valve is the most widely used safety accessory in pressure-bearing equipment such as boilers, pressure vessels, and pressure pipelines. It is used to prevent the pressure from exceeding the allowable limit value and ensure the safe and reliable operation of the system. Therefore, as the final pressure relief protection device of the production system, the safety valve is often called the last line of defense for the safety of the production system. In the production process of pressure equipment, each pressure system and outlet of pressure source are generally equipped with a safety valve to protect the system from overpressure, especially the spring full lift safety valve is the most widely used. However, relevant domestic regulations and s...
Claims
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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 丁无极丁振宇盛水平包士毅熊伟东陈海云邢璐
Owner HANGZHOU SPECIAL EQUIP INSPECTION & RES INST