34results about How to "Shorten the commissioning period" patented technology

The invention relates to a nuclear power station DCS debugging system and a method thereof. The system comprises: a computer server, an operation terminal and a test dolly which are connected through network communication. The operation terminal is used to receive initial condition input by a user and debugging operation information and display an operation simulation result of the computer server so as to be used for DCS debugging analysis. The computer server simulates a continuous production process of the nuclear power station according to the initial condition and the debugging operation information so as to generate dynamic test data. The test data is sent to DCS equipment through the test dolly. A DCS control instruction from the DCS equipment is received and the test data is recalculated. By using the system and the method of the invention, logic preview before nuclear power units are started can be realized so as to reduce a nuclear power unit debugging and starting risk, shorten debugging construction time and save project construction costs.

The invention discloses a method and system for testing a configuration logic design of a DCS (Distributed Control System) of a nuclear power station. The method comprises the following steps of: importing a designed configuration logic diagram to be tested into a selected minimal configuration DCS; communicatively connecting the selected minimal configuration DCS with an engineering simulation process platform; according to the preset test progress, running the configuration logic diagram to be tested on the minimal configuration DCS, and interacting data with the engineering simulation process platform, then recording a test result; and according to the test result, modifying the configuration logic diagram to be tested. According to the method and system disclosed by the invention, the configuration logic diagram is tested by using the minimal configuration DCS and the engineering simulation process platform, the correctness and completeness of the result can be virtually verified without depending on real field equipment, the debugging work period is shortened, and the safety and reliability of the design process is guaranteed.

The invention discloses a system for debugging a half-speed steam turbine protection system of a nuclear power plant. The system for debugging the half-speed steam turbine protection system of the nuclear power plant comprises a simulation machine and a valve debugging device, wherein the simulation machine is connected with the steam turbine protection system and used for simulating multiple operating parameters of a steam turbine and sending the multiple operating parameters of the steam turbine to the steam turbine protection system, so that protection action of the steam turbine protection system is tested; and the valve debugging device is connected with a main steam valve of the steam turbine and used for simulating a control signal of the steam turbine protection system to the main steam valve, and whether action of the main steam valve is matched with action of the steam turbine protection system or not is tested by testing opening and closing of the main steam valve. The invention further discloses a method for debugging the half-speed steam turbine protection system of the nuclear power plant. By adoption of the system and method for debugging the half-speed steam turbine protection system of the nuclear power plant, the risks of machine tripping and reactor tripping can be lowered, and the safety and reliability of the system are improved.

The invention belongs to the technical field of nuclear power station digital instrument control system debugging. The invention particularly relates to a simulation test system and test method of a nuclear power station safety level DCS system. The system comprises a man-machine interface, an input simulation module, an output simulation module, a simulation operation environment database moduleand a plurality of logic processors, the input simulation module is connected between the input end of the simulation operation environment database module and the man-machine interface, and the output simulation module is connected between the output end of the simulation operation environment database module and the man-machine interface; and the simulation operation environment database moduleis also connected with the plurality of logic processors. According to the method, the simulation test of the dynamic working condition of the safety-level DCS system is established during nuclear power station debugging, any hardware facility does not need to be introduced, the field manpower and material cost is reduced, and the debugging efficiency is improved.

The invention provides a water injection replacement and pressure maintenance test method for a hydrogen storage tank of nuclear power station. The method comprises the following steps that 1) SED water is filled into the hydrogen storage tank to replace air in the tank; 2) nitrogen is used to carry out pressure maintenance test on the hydrogen storage tank; 3) hydrogen is used to replace in the SED water in the hydrogen storage tank, and blows to discharge pollution till the hydrogen is qualified; and 4) the pressure of hydrogen storage tank is increased for standby. Compared with the prior art, the method in the invention reduces the safety risk and the debugging cost, shortens the debugging period, and is highly safe, economical and practical.

The invention discloses a step-by-step debugging method of a ladle turret electric system of a continuous casting machine. The method is characterized by comprising the following steps: an electric circuit is checked before electrification; in a decoupling state, joint test and position detecting switches of all input/output points of related substations of a ladle turret are primarily positioned; lifting/descending functions of a ladle cantilever are tested; lifting/descending and shifting-in/shifting-out functions of a ladle capping device are tested; a rotating function of a rotary table is tested; a driving motor monomer of the rotary table is in trail operation; the driving motor of the rotary table drives machinery to perform trail operation; and the 0 position of a motor position encoder is determined. The debugging method finishes the checking work of the electric circuit before electrification of all substations of a PLC, finishes input and output interface tests of all the substations in the decoupling state, and finishes most electric system debugging operations before feeding of a ladle hydraulic and lubricating system, so that the electric system debugging operation safety risk is greatly reduced when the debugging quality is guaranteed and the debugging period is shortened.

The invention discloses a nuclear power plant emergency power source power supply test method and system, the method is as follows: making a circuit system in the pressure relief state; opening a voltage stabilizer evacuation valve; providing main pump shaft seal water; dismantling a cut-off valve element from a material replacing water tank to a high-pressure safety injection pump inlet; presetting low pressure safety injection pump outlet valve opening degree; in the reactor pressure vessel covered condition, triggering a safety injection signal; starting a low pressure safety injection pump to pressurize a high-pressure safety injection pump to take water from the material replacing water tank to injecting water into a circuit; and due to the dismantling of the cut-off valve element from the material replacing water tank to a high-pressure safety injection pump inlet, flowing water from the low pressure safety injection pump outlet back to a low pressure safety injection pump inlet to form large flow circulation to star an emergency power source power supply test under full load conditions. The beneficial effects are that: the method can be performed without the reactor pressure vessel cover opening condition, and is not limited by test execution windows, other debugging work may not be restricted during the test period, and the debugging working period can be saved.

The invention discloses an assembly type heat exchange station, and relates to the technical field of heat exchange stations. The assembly type heat exchange station comprises a heat exchange controlunit, a water quality guarantee unit and a distribution balance unit. The heat exchange control unit comprises a first modular box body and a heat exchange control assembly arranged in the first modular box body. The water quality guarantee unit comprises a second modular box body and a water quality guarantee assembly arranged in the second modular box body. The distribution balance unit comprises a third modular box body and a distribution balance assembly arranged in the third modular box body. According to the technical scheme, the assembly type heat exchange station adopts an integrated system scheme, various devices, pipelines and matched valves of a conventional heat exchange station are integrated to form the three units according to functions, then the three units which are mutually independent are connected through pipelines, and therefore all the functions of the heat exchange station can be fulfilled. The assembly type heat exchange station can be directly installed in an indoor machine room and can also be combined with the building layout to be installed on the outdoor ground or a building roof, and machine-room-free installation is achieved.

The invention relates to a reserved auto-switch-on method requiring free setting of a fixed value based on a trend direction partition topology. The reserved auto-switch-on method is applied to powersystem network, wherein the power system network comprises a plurality of reserved auto-switch-on areas which are subjected to superior-junior series connection; and each of the reserved auto-switch-on areas comprises four kinds of equipment including a superior power supply, a corresponding level bus bar and incoming line, a corresponding level bus bar outgoing line, wherein the corresponding level bus bar outgoing line is used as the superior power supply of the next level of reserved auto-switch-on area. The reserved auto-switch-on method comprises the following steps: acquiring configuration parameters of all equipment in the power system network; judging the state of all equipment according to the configuration parameters and preset criterions; controlling the various reserved auto-switch-on areas, and searching the topmost level of reserved auto-switch-on area which can recover the power supply to apply the auto-switch-on action according to the sequences from the superior to thejunior in association with the configuration parameters, the state of the equipment and the action logic of the reserved auto-switch-on. According to the reserved auto-switch-on method disclosed by the invention, reserved auto-switch-on fixed values are not needed to be set from mounting and debugging of the device to operating maintenance.

The invention relates to a transformer substation monitoring system debugging method based on digital twinning, and the method employs a transformer substation monitoring system which comprises a station control layer, a spacing layer and a process layer. Comprising the following steps: S1, collecting configuration data of a running transformer substation; S2, realizing offline configuration and debugging work of an online system; S3, restoring and backing up the transformer substation on site; and S4, displaying static information and dynamic real-time running information of the transformer substation. The system has the advantages that the debugging interval of the transformer substation can be operated and visualized through the 3D holographic image information display system, a three-dimensional live-action model can be formed, after the digital twinning monitoring background is subjected to debugging change, the digital twinning monitoring background can automatically correspond to the change of the three-dimensional model, and the debugging efficiency of the transformer substation is improved. Defects such as abnormal configuration of a field operation transformer substation database can be synchronously judged through the digital twinborn monitoring background, the number of times of field repeated defect processing by maintainers in the past is reduced, and more than 30% of human resources can be saved.

The invention provides an integrated guide jet fan box. The integrated guide jet fan box comprises a jet fan module, silencer modules and flow guide modules. The jet fan module is located in the middle, the silencer modules are symmetrically connected to the two sides of the jet fan module, and the flow guide modules are connected to the silencer modules on the two sides respectively and are also symmetrically arranged relative to the jet fan module. According to the jet fan module, the silencer module and the flow guide module, profile steel frames independently form an appearance frame, stainless steel plates form an outer skin, a trapezoid box body is integrally formed, and a ventilation channel extending along the long bottom edge of a trapezoid is formed in the box body. A jet fan is arranged in the jet fan module, a silencer is arranged in the silencer module, and the end of the flow guide module is provided with a gradually-changed air opening. The problems that civil engineering reservation conditions are complex, and the construction period is long are solved.