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RUFeatures and functions of LNG skid-mounted gas station
(1) The lng skid-mounted gas station adopts LNG storage tank liquid, gas phase and liquid phase in the tank with fast automatic temperature transfer balance technology between different temperature layers, which can automatically complete the rapid transfer of the high temperature gas phase in the storage tank to the low temperature liquid phase and liquid phase in an instant. The phase temperature quickly transfers between different liquid levels to reach equilibrium. Tests have proved that under the same conditions of use, compared with the current domestic and foreign LNG storage tanks, it can reduce the production of BOG in the tank by more than 50%, improve the non-destructive storage time of the entire system, reduce BOG emissions, and protect humans The atmospheric environment on which to live.
(2) The skid-mounted LNG refueling device adopts a container-type frame structure on the outside, with shutters and explosion-proof axial fans installed on the upper part to discharge combustible gas in time when there is a gas leak to improve the safety of the storage tank. In the container, a stainless steel liquid collection tank is set at the bottom of the storage tank, and the effective volume of the liquid collection tank ≥ the total volume of the storage tank. The side panel of the container is a detachable structure, which facilitates access to the inside of the container for maintenance and repair.
(3) Adopting four-fold safety protection measures, that is, the program-controlled storage tank realizes automatic pressure reduction/regulation, double safety valve overpressure take-off, pressure alarm manual venting and gas/liquid temperature difference balance control. It not only ensures that the pressure of the LNG storage tank is within a safe range, but also essentially reduces the generation of BOG, which greatly improves the safety factor of the LNG skid-mounted refueling device.
(4) Our company can provide a true skid-type LNG filling device, namely storage tanks, submersible pumps and pump pools, gas dispensers, pipeline systems and vaporizers, safety facilities systems, boxes, electrical instrument systems and power distribution cabinets , Control cabinet (including uninterrupted power supply), instrument air system, etc. are integrated and installed on a skid body, which can realize LNG filling of LNG vehicles, and has devices with filling metering, automatic control, safety monitoring and automatic alarm functions. The electric control system does not need to be equipped with a separate operation station room. The instrument cabinet, PLC control cabinet and power cabinet are integrated into one cabinet, and the whole is integrated on the equipment skid body, and meets the corresponding explosion-proof requirements, which not only reduces on-site installation and second The time required for relocation and installation reduces the floor space.
(5) LNG station control device detection simulation system
The LNG station control device detection simulation system is mainly used for the data simulation test of the corresponding instrument during the production process of the LNG skid-mounted refueling device instrument and electrical control system, the inspection before leaving the factory, and the field maintenance process.
This system integrates all the signals of the external equipment required on the PLC control cabinet of the LNG skid-mounted refueling device electric control system, including storage tank liquid level, pump pool liquid level, storage tank pressure, pump pool temperature, pump front pressure, and pump back pressure , The analog data generation of the combustible gas concentration alarm; the analog data detection of the frequency control of the inverter; the input and output detection of the switch signal (valves, buttons, etc.).
This system can simulate all the signals on the skid to detect the PLC control cabinet during the production process of the PLC control cabinet and before leaving the factory. In the on-site maintenance process, the sensor signal on the skid body can be simulated, and the signal on the PLC side can also be simulated. Through the two-way simulation, the problem of the field equipment can be quickly judged and solved quickly. Its main functions are as follows:
Remote monitoring and maintenance
The system can transmit device-related data to the remote data center through the network. When the field equipment works abnormally or the equipment alarms, the data is transmitted to the data center, which is convenient for remotely understanding the status of the equipment's various sensors and valves, quickly making judgments about the problems of the equipment, and remotely guiding on-site maintenance.
Maintenance and management, remote diagnosis and technical service of LNG filling station
The device is equipped with a wireless tablet computer, technical training, remote diagnosis and after-sales service 24 hours a day. Establish a three-level guarantee system for routine maintenance, guided maintenance and remote technical support, and implement three-level joint rapid repairs at the first time. For on-site faults that cannot be repaired, remotely communicate with the manufacturer’s technicians via voice and video at the same time to determine on-site faults and spare parts list to restore normal operation of the equipment as soon as possible.
Features of LNG skid-mounted gas station
Highly integrated container design, convenient for transportation and movement.
The design concept of the integrated LNG skid-mounted refueling device is highly integrated. The storage, unloading, transfer, and filling process equipment, low-voltage power distribution, motor frequency modulation, and PLC automatic control systems should all be assembled on one or more skid bodies. . It is convenient for the transfer, hoisting and transportation of the entire device, and the site installation is simple and convenient.
Three-way filling and unloading truck.
In order to meet the space constraints of the customer's installation location, the pump pool of this device is designed with three-directional unloading structure. During production, the unloading and liquid filling positions can be flexibly designed according to the site topography and customer needs to realize three-directional unloading and liquid filling.
Unique control panel design, accurate display of electronic pointer meter data in the control cabinet.
The system control interface is simple and novel, and the man-machine interface is friendly. The secondary display instrument on the control cabinet adopts 1:1 analog pointer and digital meter, which has the same appearance as traditional instruments, which solves the problem of inaccurate display data of cryogenic liquid and gas pipeline remote mechanical meters. The three styles of "traditional", "elegant" and "modern" instrument panels can be switched at will, in line with the traditional observation mode of the operator and the ergonomic design requirements.
The system has remote monitoring and control functions, which can realize all-weather electronic safety on duty.
The system can realize all-round safety monitoring and control of the overall operating conditions of the device and the main equipment during non-operation periods, and automatically detect and record important data such as equipment operating conditions and historical alarm parameters. When the equipment exceeds the normal allowable working conditions, automatic sound and light alarms and voice prompts. Before the normal operation of the equipment is endangered and the equipment is damaged, the automatic shutdown (pump), valve closing (storage tank inlet and outlet valve), and valve opening (storage tank overpressure relief valve) can be interlocked to complete the actions, and the system Terminate in a safe state. The system has a remote control terminal; it is equipped with a safety monitoring electronic duty system such as tank pressure and combustible gas concentration alarms, which is convenient for the personnel on duty at night to implement remote monitoring and monitoring.
The product is equipped with Ipad to realize remote auxiliary monitoring.
Its functions include daily maintenance, guided maintenance and remote maintenance support. It can receive various data on the operating status of the site, and grasp the operating status of the equipment anytime and anywhere, especially when the equipment has an abnormal alarm, you can rush to the site to deal with emergency situations as soon as possible. When a fault occurs, the on-site operator can be remotely guided through the network to troubleshoot and repair, reducing the economic loss caused by the downtime. The latest fault records and common troubleshooting methods can be stored and updated in real time to prevent problems before they occur. Once a fault occurs, it can be repaired immediately.
