Marine methanol fuel filling device

Abstract

The utility model relates to marine equipment, in particular to a marine methanol fuel filling device, which comprises a liquid-phase-containing filling pipeline, a gas-phase-containing gas return pipeline and a mounting base, the mounting base is provided with a liquid collecting tray and a drying area, the liquid-phase-containing filling pipeline and the gas-phase-containing gas return pipeline are arranged in the liquid collecting tray, and the drying area is arranged in the liquid collecting tray. The liquid collecting tray is further provided with a sewage well and a dirty liquid collecting cabinet, and the sewage well is sequentially connected with the dirty liquid collecting cabinet through a methanol dirty liquid pump. The device is simple in structure, high in integration level, low in manufacturing cost, small in occupied space, capable of being flexibly and integrally hoisted, easy to install, overhaul or replace, capable of effectively solving the problem of recycling polluted alcohol and mixed gas, high in safety and reliability and good in universality.

Description

Technical Field

[0001] The utility model relates to marine equipment, in particular to a marine methanol fuel filling device. Background Art

[0002] At present, the refueling of marine methanol fuel is mostly done by tank trucks or onshore storage tanks through temporary connecting pipelines, which has the following problems:

[0003] Most methanol filling sites are temporary structures with incomplete equipment, no fixed methanol gas leak detection and alarm measures, no fixed methanol fire detection and alarm measures, and no waste liquid and mixed gas recovery devices. The environment is seriously polluted and there are major safety hazards.

[0004] Announcement No. 219259567U discloses a marine methanol filling system, including an unloading device, a filling device and a liquid collecting tank. A methanol pump is provided in the unloading device, and the unloading device can be connected to a tank truck through a first filling pipeline. The filling device is arranged downstream of the unloading device, and is used to fill methanol into the methanol storage tank of the ship, and the filling device is connected to the unloading device through a second filling pipeline. A first return air pipeline is connected between the filling device and the unloading device. The second return air pipeline is used to connect between the unloading device and the tank truck so that the gas in the methanol storage tank can enter the tank truck during the filling process. The liquid collecting tank is connected to the unloading device through a drain pipeline for receiving methanol from the unloading device, and the liquid collecting tank is connected to the unloading device through a venting pipeline for receiving methanol liquid or steam from the unloading device. Although this solution can realize the shore-to-ship methanol fueling, it has poor flexibility and has not effectively solved the problem of recovery of contaminated alcohol and mixed gases in the filling pipeline and the receiving ship. Its safety still needs to be further improved. Summary of the invention

[0005] The purpose of the utility model is to solve the above technical problems and to provide a marine methanol fuel filling device which has a simple structure, high integration, low manufacturing cost, small space occupation, flexible overall lifting, easy installation, maintenance or replacement, and effectively solves the problem of recovery of contaminated alcohol and mixed gas, has high safety and reliability, and good versatility.

[0006] The technical solution also includes a base, which is provided with a liquid collecting tray and a drying area. The liquid phase filling pipeline and the gas phase return pipeline are arranged in the liquid collecting tray. The liquid collecting tray is also provided with a sewage well and a sewage collection cabinet. The sewage well is connected to the sewage collection cabinet in turn via a methanol sewage pump.

[0007] The liquid phase filling pipeline comprises a methanol inlet, a stop valve, a filter, a methanol pump, a flow meter, a pressure sensor, a liquid phase gas-controlled stop valve and a methanol filling port which are connected in sequence.

[0008] The gas phase return gas pipeline comprises a filling return gas port, a gas phase gas-controlled stop valve, a second ball valve, a flame arrester and a gas phase recovery port which are connected in sequence.

[0009] The sewage well is provided with a liquid level sensor.

[0010] The waste liquid collection cabinet is also connected to the waste liquid recovery port via a first ball valve.

[0011] The liquid collecting tray is provided with a methanol gas probe and a multi-band flame detector.

[0012] It also includes a nitrogen purge system installed in the drying area, wherein the purge pipelines of the nitrogen purge system are respectively connected to a first purge port located between the stop valve and the filter on the liquid phase filling pipeline, a second purge port between the pressure sensor and the liquid phase gas-controlled stop valve, and a third purge port located between the second ball valve and the gas phase gas-controlled stop valve on the gas phase return gas pipeline.

[0013] It also includes an electrical control box, an air-controlled solenoid valve box and a methanol filling machine installed in the drying area. The input end of the methanol filling machine is connected to a flow meter and a pressure sensor, and the output end is connected to the electrical control box. The output end of the electrical control box is respectively connected to the air-controlled solenoid valve box, a methanol pump and a methanol sewage pump; the output end of the air-controlled solenoid valve box is respectively connected to a liquid-phase air-controlled stop valve and a gas-phase air-controlled stop valve.

[0014] The input end of the electrical control box is also connected to a liquid level sensor, a methanol gas probe and a multi-band flame detector respectively.

[0015] A plurality of lifting ears are evenly arranged on the mounting base.

[0016] Beneficial effects:

[0017] (1) The utility model integrates the equipment as a whole on the base, which has a simple and compact structure, low cost, and small space occupation. It can be hoisted as a whole according to needs, has good flexibility, is easy to install, repair or replace, and has good versatility. It can be used in conjunction with methanol tank trucks, shore-based methanol storage tanks, pontoon methanol storage tanks, ship methanol storage tanks, etc. to refuel the receiving ships with methanol fuel.

[0018] (2) It has two sets of pipelines, one containing liquid phase filling pipeline and the other containing gas phase return pipeline, which can meet the needs of filling and recover the gas phase in the tank of the receiving ship.

[0019] (3) A liquid collection tray and a drying area are arranged on the base. Equipment that may leak are centrally installed on the liquid collection tray, and other equipment is installed in the drying area for zone management. The contaminated liquid (such as leaked methanol) collected on the liquid collection tray can flow into the sewage well and be pumped into the sewage collection cabinet for recovery by the methanol sewage pump. At the same time, the sewage collection cabinet is also connected to the sewage recovery port through the first ball valve. The sewage recovery port can be connected to the sewage discharge port of the receiving ship to receive the contaminated alcohol from the receiving ship and send it to the sewage collection cabinet for recovery, thereby realizing self-recycling and reuse while reducing the pollution to the environment caused by emissions.

[0020] (3) A methanol gas probe is installed to detect the concentration of methanol gas leakage; a multi-band flame detector is installed to detect in real time the fire of methanol fuel that is difficult to detect. In case of abnormality, an alarm is issued in time and methanol filling is cut off to ensure operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model.

[0022] Figure 2 This is the new control schematic diagram of this utility model.

[0023] Among them, 1-base, 2-liquid collection tray, 3-lifting ear, 4-nitrogen purge system, 5-electrical control box, 6-gas-controlled solenoid valve box, 7-methanol filling machine, 8-multi-band flame detector, 9-waste liquid collection cabinet, 10-methanol waste liquid pump, 11-sewage well, 12-liquid level sensor, 13-methanol gas probe, 14-methanol inlet, 15-methanol filling port, 16-gas phase recovery port, 17-filling return air port, 18-waste liquid recovery port, 19-first purge port, 20-second purge port, 21-third purge port, 22-stop valve, 23-filter, 24-methanol pump, 25-flow meter, 26-liquid phase gas-controlled stop valve, 27-gas phase gas-controlled stop valve, 28-second ball valve, 29-flame arrester, 30-drying area, 31-first ball valve, 32-pressure sensor. DETAILED DESCRIPTION

[0024] The utility model is further explained below in conjunction with the accompanying drawings:

[0025] See also Figure 1The base 1 is provided with lifting ears 3 (4 in this embodiment) around the periphery for easy overall lifting. The base 1 is provided with a liquid collecting tray 2 and a drying area 30. The liquid-containing filling pipeline and the gas-containing return pipeline where methanol leakage may occur are arranged in the liquid collecting tray 2. The liquid collecting tray 2 is also provided with a sewage well 11 and a sewage collection cabinet 9. The sewage well 11 is provided with a liquid level sensor 12. The sewage well 11 is connected to the sewage collection cabinet 9 in turn through a methanol sewage pump 10. The sewage collection cabinet 9 is also connected to the sewage recovery port 18 through a first ball valve 31. The sewage recovery port 18 is used to connect to the sewage discharge port of the receiving ship. The liquid collecting tray 2 is provided with a methanol gas probe 13 for detecting the methanol gas concentration in a local area and a multi-band flame detector 8 for detecting fire.

[0026] The liquid phase filling pipeline includes a methanol inlet 14, a stop valve 22, a filter 23, a methanol pump 24, a flow meter 25, a pressure sensor 32, a liquid phase gas-controlled stop valve 26 and a methanol filling port 15 which are connected in sequence. The function of the pipeline is to transport the methanol fuel from the methanol inlet 14 to the methanol receiving ship through the methanol filling port 15.

[0027] The gas phase return gas pipeline includes a filling return gas port 17, a gas phase gas control stop valve 27, a second ball valve 28, a flame arrester 29 and a gas phase recovery port 16 which are connected in sequence. The function of the pipeline is to transport the mixed gas collected by the filling return gas port 17 on the receiving ship to the centralized processing system through the gas phase recovery port 16.

[0028] The drying area is provided with a nitrogen purge system 4, an electrical control box 5, a gas-controlled solenoid valve box 6 and a methanol filling machine 7. The purge pipeline of the nitrogen purge system 4 is respectively connected to the first purge port 19 between the stop valve 22 and the filter 23 on the liquid phase filling pipeline, the second purge port 20 between the pressure sensor 32 and the liquid phase gas-controlled stop valve 26, and the third purge port 21 between the second ball valve 28 and the gas phase gas-controlled stop valve 27 on the gas phase return gas pipeline, so as to purge and decompose the liquid phase pipeline and the gas phase pipeline respectively.

[0029] The input end of the methanol filling machine 7 is connected to the flow meter 25 and the pressure sensor 32, and is used to receive the signals collected from the flow meter 25 and the pressure sensor 32, monitor the flow rate, flow velocity and pressure data of the liquid phase filling pipeline in real time, and display the filling operation prompt information and transaction status. The output end is connected to the electrical control box 5 to feed back the data to the electrical control box 5. In addition to being connected to the methanol filling machine 7, the input end of the electrical control box 5 is also connected to the liquid level sensor 12, the methanol gas probe 13 and the multi-band flame detector 8 respectively. The output end of the electrical control box 5 is respectively connected to the gas-controlled solenoid valve box 6, the methanol pump 24 and the methanol sewage pump 10; the input end of the gas-controlled solenoid valve box 6 is connected to the electrical control box 5, and the output end is respectively connected to the liquid-phase gas-controlled stop valve 26 and the gas-phase gas-controlled stop valve 27.

[0030] When methanol fuel is being refilled, methanol fuel is introduced from the methanol inlet 14, the electrical control box 5 controls the solenoid valve of the gas-controlled solenoid valve box 6 to open the liquid-phase gas-controlled stop valve 26, and at the same time starts the methanol pump 24, and finally the receiving ship is refilled with liquid fuel from the methanol filling port 15; the methanol filling machine 7 receives the signals of the flow meter 25 and the pressure sensor 32, and monitors the flow rate, flow velocity, pressure and other data of the methanol filling pipeline in real time; at the same time, the electrical control box 5 controls the gas-controlled solenoid valve box 6 to open the gas-phase gas-controlled stop valve 27, and the mixed gas from the receiving ship is recovered from the gas-phase recovery port 16 through the filling return port 17, the gas-phase gas-controlled stop valve 27, the second ball valve 28, the flame arrester 29, and the mixed gas of the receiving ship is recovered to the subsequent centralized processing system.

[0031] When the methanol filling machine 7 detects changes in the flow rate and velocity data in the filling pipeline, the output control signal is fed back to the electrical control box 5 to control and adjust the rotation speed of the methanol pump 24 for correction; when the methanol filling machine 7 detects that the pipeline pressure exceeds the set value feedback, the electrical control box 5 is controlled to close the liquid phase gas-controlled stop valve 26 and the gas phase gas-controlled stop valve 27 through the solenoid valve of the gas-controlled solenoid valve box 6 to stop filling.

[0032] When the methanol gas probe 13 detects that the methanol gas concentration in the detection area exceeds the set value, the signal is fed back to the electrical control box 5, and the liquid-phase gas-controlled stop valve 26 and the gas-phase gas-controlled stop valve 27 are closed through the solenoid valve of the gas-controlled solenoid valve box 6 to stop filling.

[0033] When the flame detector 8 detects a fire, a signal is fed back to the electrical control box 5, which controls the solenoid valve of the gas-controlled solenoid valve box 6 to close the liquid-phase gas-controlled stop valve 26 and the gas-phase gas-controlled stop valve 27, and stops filling.

[0034] The sewage well 11 collects the leaked methanol waste liquid. When the liquid level sensor 12 detects that the height of the methanol liquid in the sewage well 11 exceeds the set value, the signal is fed back to the electrical control box 5, which controls the opening of the methanol sewage pump 10 to recover the methanol waste liquid leaked from the sewage well 11 to the sewage collection cabinet 9. The methanol waste liquid collected on the receiving ship can also be recovered to the sewage collection cabinet 9 through the sewage recovery port 18 via the first ball valve 31.

Claims

1. A marine methanol fuel filling device, comprising a liquid-containing filling pipeline and a gas-containing gas return pipeline, characterized in that: It also includes an installation base, which is provided with a liquid collecting tray and a drying area. The liquid phase filling pipeline and the gas phase return pipeline are arranged in the liquid collecting tray. The liquid collecting tray is also provided with a sewage well and a sewage collection cabinet. The sewage well is connected to the sewage collection cabinet in turn through a methanol sewage pump.

2. The marine methanol fuel filling device according to claim 1, characterized in that: The liquid phase filling pipeline comprises a methanol inlet, a stop valve, a filter, a methanol pump, a flow meter, a pressure sensor, a liquid phase gas-controlled stop valve and a methanol filling port which are connected in sequence.

3. The marine methanol fuel filling device according to claim 1, characterized in that: The gas phase return gas pipeline comprises a filling return gas port, a gas phase gas-controlled stop valve, a second ball valve, a flame arrester and a gas phase recovery port which are connected in sequence.

4. The marine methanol fuel filling device according to claim 1, characterized in that: The sewage well is provided with a liquid level sensor.

5. The marine methanol fuel filling device according to claim 1, characterized in that: The waste liquid collection cabinet is also connected to the waste liquid recovery port via a first ball valve.

6. The marine methanol fuel filling device according to claim 1, characterized in that: The liquid collecting tray is provided with a methanol gas probe and a multi-band flame detector.

7. The marine methanol fuel filling device according to any one of claims 1 to 6, characterized in that: It also includes a nitrogen purge system installed in the drying area, wherein the purge pipelines of the nitrogen purge system are respectively connected to a first purge port located between the stop valve and the filter on the liquid phase filling pipeline, a second purge port between the pressure sensor and the liquid phase gas-controlled stop valve, and a third purge port located between the second ball valve and the gas phase gas-controlled stop valve on the gas phase return gas pipeline.

8. The marine methanol fuel filling device according to claim 7, characterized in that: It also includes an electrical control box, an air-controlled solenoid valve box and a methanol filling machine installed in the drying area. The input end of the methanol filling machine is connected to a flow meter and a pressure sensor, and the output end is connected to the electrical control box. The output end of the electrical control box is respectively connected to the air-controlled solenoid valve box, a methanol pump and a methanol sewage pump; the output end of the air-controlled solenoid valve box is respectively connected to a liquid-phase air-controlled stop valve and a gas-phase air-controlled stop valve.

9. The marine methanol fuel filling device according to claim 8, characterized in that: The input end of the electrical control box is also connected to a liquid level sensor, a methanol gas probe and a multi-band flame detector respectively.

10. The marine methanol fuel filling device according to claim 1, characterized in that: A plurality of lifting ears are evenly arranged on the mounting base.

Images