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KR-20260067864-A - Relief valve inspection system

KR20260067864AKR 20260067864 AKR20260067864 AKR 20260067864AKR-20260067864-A

Abstract

The present invention relates to a relief valve inspection system capable of automatically checking whether safety relief valves installed in various factory facilities and field piping lines are operating normally and generating and providing inspection results as digital data. The relief valve inspection system comprises: a relief valve popping test device that performs a discharge test of the relief valve using oil and transmits the discharge test results; and an automatic recording device that receives and analyzes the discharge test results transmitted from the relief valve popping test device, generates maintenance information based on the analysis results when maintenance is required and transmits it to a manager, and generates and provides the analysis results as digital data.

Inventors

  • 곽영환

Assignees

  • 에스씨에스 주식회사

Dates

Publication Date
20260513
Application Date
20241106

Claims (7)

  1. A relief valve popping test device that performs a relief valve ejection test using oil and transmits the ejection test results; and A relief valve inspection system characterized by including an automatic recording device that receives and analyzes the ejection test results transmitted from the relief valve popping test device, generates maintenance information when maintenance occurs based on the analysis results and transmits it to the manager, and generates and provides the analysis results as digital data.
  2. In claim 1, the relief valve popping test device is, Oil tank for storing oil for relief valve testing; Needle valve for removing air from the pipeline within a relief valve popping test device; An oil pump that pumps and supplies test oil stored in the above oil tank; An oil filter for removing impurities contained in the oil supplied through the above oil pump; A safety valve that ensures safety by discharging fluid to the outside when the pressure on the above pipeline reaches a set pressure, and restoring it to a normal state when the pressure falls below a certain pressure; A shut-off valve that supplies or blocks oil supplied through the above oil filter to a ball valve; A ball valve equipped with an inspection relief valve and regulating the pressure of the inspection relief valve with oil supplied through the shut-off valve; A digital gauge that measures pressure according to the operation of the relief valve mounted above and transmits the measured pressure data to a connected automatic recording device; A level gauge that measures and visually displays the amount of oil in the oil tank; and A relief valve inspection system characterized by including a gate valve that supplies or blocks oil into the oil tank.
  3. In claim 1, the automatic recording device is, A relief valve information receiver that receives information about the relief valve under test; A relief valve pressure measurement information receiving unit that receives inspection result data transmitted from the above relief valve popping test device; A relief valve inspection system characterized by including an inspection result analysis unit that analyzes inspection result data received from the above relief valve pressure measurement information receiving unit.
  4. In claim 3, the automatic recording device is, A relief valve inspection system characterized by including an inspection result generation unit that generates and provides inspection result analysis information analyzed by the inspection result analysis unit as a graph, generates an inspection result file upon transmission of the inspection result analysis information, and converts the generated inspection result file into an anti-counterfeiting file and transmits it.
  5. In claim 3, the automatic recording device is, A maintenance information generation unit that generates maintenance information when maintenance is required based on the inspection result analysis information analyzed by the inspection result analysis unit above; A relief valve inspection system characterized by including a maintenance information transmission unit that transmits maintenance information generated by the maintenance information generation unit to a display device or to an administrator terminal.
  6. In claim 5, the maintenance information generating unit, A relief valve inspection system characterized by determining, based on the results analyzed through the above inspection result analysis unit, that the operation of the oil pump is abnormal, that there is a shortage of hydraulic oil or that the oil filter is clogged with foreign matter, and generating corresponding maintenance information.
  7. In claim 5, the maintenance information generating unit, A relief valve inspection system characterized by generating maintenance information, including replacement of ball valve disc parts or piping inspection, when an oil leak is determined based on an analysis result through the above inspection result analysis unit.

Description

Relief valve inspection system The present invention relates to a relief valve inspection system, and more specifically, to a relief valve inspection system capable of automatically checking whether safety relief valves installed in various factory facilities and field piping lines are operating normally, and generating and providing the inspection results as digital data. This invention is a result filed with support as part of the Jeonnam Technopark 2024 Yeosu City Star Enterprise Development Project's enterprise growth stage development program. Generally, high-temperature, high-pressure boilers are used in plants such as thermal power plants, nuclear power plants, petrochemical plants, and oil refineries. Since the boiler's set pressure must be monitored frequently, the boiler piping is equipped with a high-pressure gas safety valve that automatically detects and alarms the set pressure, and a safety relief valve that opens to release fluid and lower the pressure when the fluid pressure exceeds a certain level. Here, the high-pressure gas safety valve functions to ensure the safety of the boiler and related equipment by mechanically detecting the pressure at the valve inlet when it exceeds a certain pressure and releasing the excess pressure to protect the device from explosion, while also allowing the noise generated during the release to be detected by surrounding people as a signal sound. In addition, it returns to its original state when the pressure at the valve inlet drops below a certain pressure again. A relief valve is a valve that lowers pressure by opening to release fluid when the pressure exceeds a certain level. It is installed in facilities handling fluids, such as boilers, pressure vessels, and piping, and is used to prevent safety accidents caused by excessive pressure. As these relief valves are used for an extended period, the operating pressure involved in opening and closing the valve changes, potentially causing the valve to open at a pressure different from the initially set pressure. For example, a spring-type valve driven by a spring allows the operating pressure for fluid discharge to be set by adjusting the length of the spring; however, as the spring loses its elasticity over time, the valve may open at a pressure lower than the initially set pressure. In addition, relief valves must be checked for defects after on-site removal and overhaul, and only products found to be free of defects should be installed on-site. Therefore, relief valves must be periodically inspected and calibrated to ensure they always open at a constant pressure, and products free of defects must be installed. However, the method used to inspect these relief valves involves an operator visually checking the pressure value of the relief valve under test using an analog gauge. This visual inspection method has the disadvantage that the reliability of the inspection results is low because it is difficult to determine the instantaneous operating pressure value and the verification of minute pressure values is also unclear, making it difficult to accurately determine the operating pressure and closing pressure values. In addition, since the inspection result report is also handwritten, there is a disadvantage in that its reliability cannot be guaranteed. Therefore, a relief valve inspection system is required that can automatically and accurately check for abnormalities in the relief valve and provide an inspection result report as digital data. FIG. 1 is a schematic diagram of a relief valve inspection system according to the present invention, and FIGS. 2 and FIGS. 3 are a front view and a plan view of a relief valve popping test device according to the present invention, and FIG. 4 is a photograph showing an example of a relief valve popping test device according to the present invention, and FIG. 5 is a block diagram of an exemplary embodiment of the automatic recording device of FIG. 1. A relief valve inspection system according to a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings. The terms or words used in the present invention described below should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely preferred embodiments of the present invention and do not represent all technical concepts of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application. FIG. 1 is a schematic diagram of a relief valve inspection system according to a preferred embodim