Remote pressure line protection device for pilot operated safety valve
A pilot-operated safety valve and protection device technology, used in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as non-opening, blockage of pressure guiding pipes, valve failures, etc., to ensure normal operation and maintenance. Normal work, the effect of solving the blockage
Active Publication Date: 2017-06-13
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
If the medium contains water or heavy components, the medium may condense in the pressure guiding tube, or the medium contains solid particles (such as catalyst dust, carbon powder generated by medium reaction, etc.), which may cause the pressure guiding tube to be blocked, thereby hindering the pilot valve of the safety valve Normal pressure taking leads to misoperation of the pilot valve, causing the main valve of the pilot valve to be opened or not opened by mistake, or even the valve to fail, thus affecting the safe production of the protected system
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[0016] The above and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.
[0017] The remote pressure-taking line protection device of the pilot-operated safety valve of the present invention, such as figure 2 As shown, the device includes a first protection medium pipeline 201, the upstream of the first protection medium pipeline is connected to the first protection medium input device, and the downstream is connected to the pressure-taking line 103 of the pilot safety valve pilot valve, and the first protection medium pipeline 201 is connected to the From upstream to downstream, a pressure regulating valve 207, a main protection medium check valve 212 and a main protection medium cut-off valve 213 are arranged in sequence; a pressure sensor 209 is arranged between the pressure regulating valve 207 and the main protection medium check valve 212, and the pressure se...
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The invention relates to a remote pressure-taking line protection device for a pilot-operated safety valve, the device includes a first protection medium pipeline, the upstream of the first protection medium pipeline is connected to a first protection medium input device, and the downstream is connected to a pilot-operated safety valve Pilot valve pressure line, the first protective medium pipeline is provided with a pressure regulating valve group, a main protective medium check valve and a main protective medium cut-off valve in sequence from upstream to downstream; the pressure regulating valve is connected with the main protective medium A pressure sensor is provided between the check valves, a pressure controller is provided between the pressure sensor and the pressure regulating valve, and the pressure controller is also connected with an overpressure protection safety valve. An overpressure protection pipeline is connected between the protection medium check valves, and the overpressure protection pipeline is connected to a flare pipeline or an atmospheric safety zone, and an overpressure protection safety valve is arranged on the overpressure protection pipeline.
Description
technical field [0001] The invention relates to the fields of oil refining and petrochemical industry, in particular to a remote pressure-taking line protection device for a pilot-operated safety valve. Background technique [0002] As a safety valve for automatic mechanical safety protection, the pilot safety valve is affected by the external force caused by the machine (such as a spring), and the valve seat is closed when the protected system is operating normally. When the pressure of the medium in the protected system rises and exceeds the specified value, the valve will automatically open to prevent the pressure in the protected system from exceeding the specified value by discharging the medium to the outside of the system. Pilot-operated safety valves are mainly divided into two parts, the main valve and the pilot valve, according to their components. The main valve is driven and controlled by the medium discharged from the pilot valve. The pilot valve acts as a dir...
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IPC IPC(8): F17D5/00
Inventor 王勇李玉鑫路聿轩郭克伦曹媛维曹新波张霄航石海涛姜南陈晴于震坤
Owner BC P INC CHINA NAT PETROLEUM CORP