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Filling system and method for LNG filling station

A technology for filling systems and filling stations, applied in the field of filling systems for LNG filling stations, which can solve problems such as long time consumption, low filling efficiency, and high loss of LNG liquid, and achieve high efficiency, easy operation, and saving The effect of waiting time

Pending Publication Date: 2018-01-19
成都深冷凌泰机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the traditional gas filling station consumes a long time in the process of metering and filling, the efficiency of gas filling is low, and the loss of LNG liquid is large in the process of use. The purpose is to provide a kind of LNG gas filling Station filling system and method thereof, to solve the above problems

Method used

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  • Filling system and method for LNG filling station
  • Filling system and method for LNG filling station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1~2 As shown, a filling system and method thereof for an LNG filling station of the present invention includes at least one filling machine, and the filling machine includes a sequentially connected LNG storage tank, a control valve 1, an LNG submersible pump, and a flow meter , a control valve 2, an air filling gun, and an electronic controller connected with a flow meter and a control valve 3, the electronic controller is connected with the control valve 2, and the control valve 3 is connected with the LNG storage tank and the electronic controller The electronic controller is connected with a controller; it is characterized in that it also includes a station control system and a vehicle detection system, and the station control system is connected with the control valve 1, the LNG submersible pump and the controller respectively, and the The vehicle detection system is used to obtain the vehicle signal of the vehicle at the entrance and the gas fillin...

Embodiment 2

[0054] The filling method of a kind of LNG gas filling station includes system standby process, cycle pre-cooling process and filling process;

[0055] When Tn is greater than T m , the system starts the system standby process; T n After the vehicle entrance detector detects the entry of the vehicle, it sends a signal to the controller. After the controller analyzes and processes, it sends a signal to the station control system. The station control system sends a start precooling signal and adds 1 to the vehicle counter m in the controller. Started timing pre-cooling waiting time; T m Be the maximum waiting time of the circulation precooling flow process of the present invention, described T m is 4 minutes;

[0056] When Tz is less than or equal to Ty, the dispenser starts the filling process at Ty time; T z After the vehicle presence detector detects the vehicle signal, the electronic controller sends a refueling command to the station control system to make the system en...

Embodiment 3

[0067] The filling method of a kind of LNG filling station, on the basis of embodiment 2, the station control system monitors the temperature of the pump pool in the circulating pre-cooling process at the same time, the controller obtains the temperature information, and obtains the temperature information of each pump pool through analysis and comparison. The temperature is sorted from low to high, and according to the value of m, the prompt lights on the gas dispenser will flash in order of temperature from low to high.

[0068] When there are four filling machines, the LNG submersible pumps corresponding to the filling machines work at the same time. When there are 5 vehicles that need to be filled, the controller obtains the temperature of each pump pool through the station control system, and The temperature of the pump pool is sorted, and the warning light on the gas dispenser corresponding to the pump pool with the lowest temperature is controlled to flash, and then the ...

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Abstract

The invention discloses a filling system and method for an LNG filling station. The filling system comprises at least one gas filling machine, wherein the gas filling machine comprises an LNG storagetank, a control valve 1, an LNG immersed pump, a flow meter, a control valve 2 and a gas filling gun and further comprises an electronic timing controller and a control valve 3; the electronic timingcontroller is connected with the control valve 2; the control valve 3 is further connected with each of the LNG storage tank and the electronic timing controller; the electronic timing controller is connected with each of the station management center and a controller; the filling system is characterized by further comprising a station control system and a vehicle detection system; the station control system is connected with each of the control valve 1, the LNG immersed pump and the controller; and the vehicle detection system is used for acquiring the position information of a vehicle at theentrance and an LNG parking spot, after the position information is analyzed and processed by the controller, and a system standby, circulating precooling or filling instruction is sent to the station control system, and the station control system outputs control level through a logic circuit.

Description

technical field [0001] The invention relates to the field of natural gas, in particular to an LNG filling station filling system and a method thereof. Background technique [0002] LNG (Liquefied Natural Gas), the English abbreviation for liquefied natural gas. Natural gas is a combustible gas that is naturally extracted from gas fields, and its main component is methane. LNG is gaseous natural gas under normal pressure, and it will condense into liquid when cooled to -162°C. Natural gas liquefaction can greatly save storage and transportation space, and has the characteristics of large calorific value and high performance. [0003] Moreover, LNG is a clean and efficient energy source. Natural gas is becoming more and more popular as a clean energy source, and many countries have listed LNG as the preferred fuel. [0004] However, LNG is a low-temperature liquid medium, and its temperature is generally around -140°C, so it is easy to vaporize. Therefore, during the LNG ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/08F17D3/01
Inventor 沈孟山
Owner 成都深冷凌泰机电科技有限公司
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