Skid-mounted depressurizing system

A skid-mounted depressurizing system, comprising a main process module, a mechanical control system, a thermodynamic balance system and a control system,

• wherein the main process module comprises a plurality of main process pipelines, each of the plurality of the main process pipelines is provided with a pressure reducing valve set;
• the thermodynamic balance system comprises a storage unit, a switching unit, a heating unit, a cooling unit, and a conveying unit, the storage unit is configured to store the medium, the heating unit is configured to heat the input medium, and the cooling unit is configured to cool the input medium, the conveying unit is configured to increase pressure of the medium flowing out of the storage unit and convey the medium downstream, and the switching unit is configured to output the heated or cooled medium during operation,
• the mechanical control system comprises at least one of an electric control system, a pneumatic control system, or an electro-hydraulic control system, and
• the control system comprises a central control module, a depressurizing-system external signal processor, a mechanical-control-system processing module, and a thermodynamic-balance-system processing module, wherein the depressurizing-system external signal processor is configured to receive and process signals of upstream and downstream devices or other signals external to the depressurizing system, and transmit the signals to the central control module for corresponding processing, the mechanical-control-system processing module is configured to receive an instruction sent by the central control module, and to feedback and control each valve in the main process module to implement actions;
• and the thermodynamic-balance-system processing module is configured to receive the instruction sent by the central control module, and to feedback and control actions of each functional unit in the thermodynamic balance system;
• a process medium is configured to enter at least one of the plurality of the main process pipelines during depressurization, the control system is configured to send control instructions to the mechanical control system and the thermodynamic balance system, the mechanical control system is configured to output a torque according to the control instructions of the control system to control opening and closing and opening degree adjustment of each valve of the plurality of the main process pipelines, and the thermodynamic balance system is configured to provide the medium of different properties to the plurality of the main process pipelines according to the control instructions of the control system to control temperature, pressure, cleanliness degree or sealing degree of the main process module;
• the main process module comprises N main process pipelines, N≥4, and the N main process pipelines are backup pipelines for each other;
• inlets of the plurality of the main process pipelines are connected together by one pipe, and outlets of the plurality of the main process pipelines are connected by another pipe, or the inlets of the plurality of the main process pipelines are connected by a multi-way switching valve, and the outlets of the plurality of the main process pipelines are connected by another multi-way switching valve;
• the inlets of the N main process pipelines are connected by a multi-way switching valve I, and the outlets are connected by a multi-way switching valve II and are circumferentially distributed;
• the multi-way switching valve I comprises an inlet pipe and plurality of outlet pipes located below the inlet pipe and circumferentially distributed, a switching valve element I configured to control the opening and closing of the multi-way switching valve is mounted on a side of each of the plurality of the outlet pipe of the multi-way switching valve I, and a top end of the inlet pipe of the multi-way switching valve I is an inlet for the medium;
• the multi-way switching valve II comprises an outlet pipe and a plurality of inlet pipes located above the outlet pipe of the multi-way switching valve II and circumferentially distributed, a switching valve element II configured to control the opening and closing of the multi-way switching valve is mounted on a side of each of the plurality of the inlet pipes of the multi-way switching valve II, and a bottom end of each outlet pipe of the multi-way switching valve I is respectively connected to a top end of the corresponding inlet pipe of the multi-way switching valve II through one of the main process pipelines;
• and
• the medium is configured to enter from the inlet pipe of the multi-way switching valve I, then selectively flow into one or more of the N main process pipelines according to the opening and closing of the switching valve element I, then be converged at the outlet pipe of the multi-way switching valve II by the switching valve element II after depressurization, and finally flow out.