High safety multifunctional fuel delivery device and control method

Abstract

The application discloses a kind of high security multifunctional fuel delivery device, it is related to fuel delivery field, solve the technical problem that existing fuel delivery device function is single, security guarantee measure is not in place.It includes valve group, the device enclosure is installed in the valve group outer side, gas delivery unit and controller are equipped in the valve group, air purge unit and gas inerting unit are also equipped in the valve group, the air purge unit is communicated with gas delivery unit, the gas inerting unit is communicated with gas unit, the valve group is installed in ventilation cover, a plurality of suction fans are installed in the ventilation cover and are communicated with its inside, pipeline is connected between the ventilation cover and device enclosure.The application also discloses a kind of control method of high security multifunctional fuel delivery device.In the application, independent gas inerting and air purge function ensure the safe use of fuel delivery device, upstream gas supply equipment and downstream engine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fuel delivery, more particularly, it relates to a high-safety multifunctional fuel delivery device and control method. BACKGROUND

[0002] With the implementation of the "double carbon" strategy and the increasing pressure of environmental protection, clean energy with low carbon and environmental protection is increasingly concerned by the industry. Green low-carbon fuels represented by natural gas and hydrogen, biomass fuels represented by biogas and landfill gas, and industrial tail gas fuels represented by gas, coke oven tail gas and coke tail gas have gradually become the new darling of clean energy.

[0003] However, gas fuel has the disadvantages of easy leakage, easy diffusion, and high risk of flammability and explosiveness, so safe delivery is very important. Once gas fuel leaks, gas fuel enters a closed space, which has great safety hazards. In addition, the existing fuel delivery device has single function and inadequate safety protection measures, which cannot meet the requirements of fine and high-safety application fields. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a high-safety multifunctional fuel delivery device and control method to solve the technical problems of single function and inadequate safety protection measures of the existing fuel delivery device.

[0005] The high-safety multifunctional fuel delivery device comprises a valve group, a gas delivery unit and a controller are arranged in the valve group, an air purging unit and a gas inerting unit are also arranged in the valve group, the air purging unit is communicated with the gas delivery unit, the gas inerting unit is communicated with the gas delivery unit, the valve group is installed in a ventilation cover, a plurality of air exhaust fans are installed outside the ventilation cover and communicated with the inside of the ventilation cover, a gas probe is installed at the connection between the ventilation cover and the air exhaust fan, and the gas probe, the gas delivery unit, the air purging unit, the gas inerting unit and the plurality of air exhaust fans are electrically connected with the controller.

[0006] Further improvement, the gas delivery unit comprises a gas inlet and a gas outlet, the gas inlet is arranged on one side of the ventilation cover, the gas outlet is arranged on the other side of the ventilation cover, the gas inlet is connected with a gas manual valve through a pipeline, the gas manual valve is connected with a filter through a pipeline, the filter is connected with a flow meter through a pipeline, the flow meter is connected with a first gas shut-off valve through a pipeline, the first gas shut-off valve is connected with a second gas shut-off valve through a pipeline, the second gas shut-off valve is connected with a pressure regulating valve through a pipeline, the pressure regulating valve is communicated with the gas outlet through a pipeline, and the flow meter, the first gas shut-off valve and the second gas shut-off valve are electrically connected with the controller.

[0007] Further, the air purge unit comprises a purge air inlet and a purge air outlet, a device enclosure is mounted on one side of the ventilation hood, the purge air inlet is arranged on the side of the ventilation hood close to the gas inlet, an air manual valve is mounted in the purge air inlet, the purge air outlet is arranged on the device enclosure, a first one-way valve and a second one-way valve are sequentially connected to the purge air inlet, the second one-way valve is communicated with the gas manual valve, an air diffusion valve is connected to the purge air outlet, the air diffusion valve is communicated with the flow meter first gas shut-off valve, and the air diffusion valve is electrically connected with the controller.

[0008] Further, a ventilation air outlet is arranged at the connection between the device enclosure and the ventilation hood, the ventilation air outlet is communicated with the ventilation hood through a pipeline, and the ventilation air outlet is located on one side of the exhaust fan.

[0009] A ventilation air inlet is arranged on the device enclosure close to the gas outlet, and the ventilation air inlet is communicated with the gas outlet through a pipeline.

[0010] Further, the gas inerting unit comprises an inert gas inlet, the inert gas inlet is arranged on the ventilation hood, a second inert gas shut-off valve is connected to the inert gas inlet through a pipeline, the second inert gas shut-off valve is communicated with the purge air outlet through an inert gas diffusion valve, a first inert gas shut-off valve and a combined one-way valve are sequentially connected to the second inert gas shut-off valve, the combined one-way valve is connected with a pressure regulating valve, the first inert gas shut-off valve, the second inert gas shut-off valve and the inert gas diffusion valve are electrically connected with the controller.

[0011] Further, a temperature sensor is arranged in the pipeline between the gas inlet and the gas manual valve, a first pressure sensor is arranged in the pipeline between the filter and the flow meter, and a second pressure sensor is arranged in the pipeline between the pressure regulating valve and the gas outlet, and the temperature sensor, the first pressure sensor and the second pressure sensor are electrically connected with the controller.

[0012] A control method applied to the high-safety multifunctional fuel delivery device according to any one of the above, the method comprising,

[0013] An engine starting step: for opening the first gas shut-off valve and the second gas shut-off valve and closing the gas diffusion valve when the engine starts, the gas starts to be delivered from the gas inlet and enters the engine;

[0014] An engine stopping step: for closing the first gas shut-off valve, opening the gas diffusion valve, and closing the second gas shut-off valve according to a preset time delay when the engine stops, and stopping the delivery of the gas.

[0015] Gas leakage treatment step: for when the controller collects the gas concentration inside the ventilation hood is greater than the set concentration, control the start of the exhaust fan, the abnormal leakage of gas in the ventilation hood is discharged from the ventilation air outlet.

[0016] Valve group inerting step: for when the engine is long-term shutdown or pipeline maintenance requires gas inerting, the controller simultaneously opens the first gas shut-off valve, the second gas shut-off valve, the first inert gas shut-off valve and the second inert gas shut-off valve, closes the inert gas diffuser valve and the gas diffuser valve, and makes the inert gas enter the valve group from the inert gas inlet;

[0017] Valve group stop inerting step: for after the inerting is completed, the first inert gas shut-off valve and the second inert gas shut-off valve are closed at the same time, and the inert gas diffuser valve is opened to diffuse the inerting gas.

[0018] Pipeline purging step: for when the engine is shut down, the air diffuser valve, the first gas shut-off valve and the second gas shut-off valve are opened, and the gas diffuser valve is closed, so that the purging air enters the valve group from the purging air inlet to purge the valve group.

[0019] Advantages

[0020] The advantages of the present application are:

[0021] 1. The present application is provided with a controller, an air purging unit, a gas inerting unit, a filter, a flow meter and a plurality of pipelines, etc. The present application realizes the delivery of gas by opening the first gas shut-off valve, the second gas shut-off valve and closing the gas diffuser valve. The delivery of gas is stopped by closing the first gas shut-off valve, opening the gas diffuser valve and closing the second gas shut-off valve according to the preset time delay. The abnormal leakage of gas is discharged from the ventilation air outlet by starting a plurality of exhaust fans, which flows in the opposite direction of the gas flow. The present application can effectively avoid the leakage of combustible gas at the closed place and improve the safety.

[0022] 2. The present application realizes the introduction of inerting gas into the valve group by opening the first gas shut-off valve, the second gas shut-off valve, the first inert gas shut-off valve and the second inert gas shut-off valve, and closing the inert gas diffuser valve and the gas diffuser valve. The valve group is purged by opening the air diffuser valve, the first gas shut-off valve and the second gas shut-off valve, and closing the gas diffuser valve to introduce purging air into the valve group. The present application is convenient to operate, and the independent gas inerting and air purging functions ensure the safe use of the fuel delivery device, the upstream gas supply equipment and the downstream engine. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure schematic diagram of the present application delivery device.

[0024] Wherein: 1-vent hood, 2-valve group, 3-exhaust fan, 4-gas probe, 21-temperature sensor, 22-gas manual valve, 23-filter, 24-first pressure sensor, 25-flow meter, 26-first gas shut-off valve, 27-second gas shut-off valve, 28-pressure regulating valve, 29-second pressure sensor, 210-first check valve, 211-second check valve, 212-air bleed valve, 213-gas bleed valve, 214-combined check valve, 215-first inert gas shut-off valve, 216-second inert gas shut-off valve, 217-inert gas bleed valve, 218-air manual valve, 5-gas inlet, 6-gas outlet, 7-controller, 8-purge air inlet, 9-ventilation air outlet, 10-purge air outlet, 11-ventilation air inlet, 12-device enclosure, 13-inert gas inlet. DETAILED DESCRIPTION

[0025] The application will be further described in conjunction with the embodiments, but does not constitute any limitation to the application, and any limited number of modifications made by anyone within the scope of the claims of the application is still within the scope of the claims of the application.

[0026] Reference Figure 1 The high-safety multifunctional fuel delivery device of the application comprises a valve group 2, a device enclosure 12 is installed on one side of the valve group 2, a gas delivery unit and a controller 7 are arranged in the valve group 2, the controller 7 is used to control the opening and closing of the valves according to the signals collected by the flow meter, the pressure sensor and the temperature sensor, the controller 7 is connected with a screen, and the real-time gas flow is displayed on the screen in the form of g / kWh.

[0027] An air purge unit and a gas inerting unit are further arranged in the valve group 2. The air purge unit is communicated with the gas delivery unit, the gas inerting unit is communicated with the gas delivery unit, and the gas inerting unit is used to pass inerting gas into the valve group 2 to ensure safe use. The air purge unit is used to purge the inerting gas in the pipeline.

[0028] A plurality of exhaust fans 3 are installed outside the vent hood 1 and communicated with the inside of the vent hood 1, a pipeline is connected between the vent hood 1 and the device enclosure 12, and a gas probe 4 is installed on the pipeline connected between the vent hood 1 and the exhaust fan 3. The gas probe 4 is mainly used to detect the gas concentration in the air to prevent safety accidents caused by gas leakage.

[0029] The gas probe 4, the gas delivery unit, the air purge unit, the gas inerting unit and the plurality of exhaust fans 3 are electrically connected with the controller 7.

[0030] The gas delivery unit comprises a gas inlet 5 and a gas outlet 6. The gas inlet 5 is formed on one side of the ventilation cover 1, and the gas outlet 6 is formed on the other side of the ventilation cover 1. The gas inlet 5 is connected with a gas manual valve 22 through a first pipeline. The gas manual valve 22 is used for controlling the inflow of gas.

[0031] The gas manual valve 22 is connected with a filter 23 through a second pipeline. The filter 23 is used for filtering some impurities in the gas, preventing impurities and pollutants from entering the gas system, and improving the cleanliness and stability of the gas.

[0032] The filter 23 is connected with a flow meter 25 through a third pipeline. The flow meter 25 is mainly used for measuring and obtaining the volume or mass of gas passing through the pipeline.

[0033] The flow meter 25 is connected with a first gas shut-off valve 26 through a fourth pipeline. The first gas shut-off valve 26 is connected with a second gas shut-off valve 27 through a fifth pipeline. The second gas shut-off valve 27 is connected with a pressure regulating valve 28 through a sixth pipeline. The gas shut-off valve is used for cutting off the gas supply. When a gas leak, fire or other safety hazard is detected, the gas shut-off valve can be quickly closed automatically or manually to prevent the accident from expanding and reduce the risk of equipment damage and personnel casualties.

[0034] The first gas shut-off valve 26, the second gas shut-off valve 27 and the gas diffuser valve 213 constitute a triple interlocking valve, which can realize safe delivery and diffusion of gas.

[0035] The pressure regulating valve 28 is connected with the gas outlet 6 through a seventh pipeline. The pressure regulating valve is a device used for controlling and regulating the pressure of fluid or gas.

[0036] The flow meter 25, the first gas shut-off valve 26 and the second gas shut-off valve 27 are electrically connected with a controller 7.

[0037] An air purge unit is connected with the second pipeline and the fourth pipeline respectively, and a gas inerting unit is connected with the sixth pipeline.

[0038] The air purge unit comprises a purge air inlet 8 and a purge air outlet 10. A device enclosure 12 is installed on the side of the valve group 2. An air manual valve 218 is installed in the purge air inlet 8. The purge air inlet 8 is formed on the side of the valve group 2 close to the gas inlet 5 and is connected with the air outlet of an external air blower. The purge air outlet 10 is formed on the device enclosure 12. The purge air inlet 8 is connected with the second pipeline through a first one-way valve 210 and a second one-way valve 211 connected in sequence. The one-way valve can prevent backflow of the purge air.

[0039] The purge air outlet 10 is connected with the fourth pipeline through an air release valve 212, and the air release valve 212 is electrically connected with the controller 7. When the internal pressure of the device exceeds the preset value, the air release valve is automatically opened to discharge the excess gas, thereby ensuring the safe operation of the device.

[0040] The gas inerting unit comprises an inert gas inlet 13, and the inert gas inlet 13 is arranged on one side of the valve group 2 and is connected with an external inert gas device. The inert gas inlet 13 is connected with a second inert gas cut-off valve 216 through a pipeline, the second inert gas cut-off valve 216 is connected with the purge air outlet 10 through an inert gas release valve 217, the second inert gas cut-off valve 216 is connected with the sixth pipeline through a first inert gas cut-off valve 215 and a combined check valve 214 connected in sequence, and the first inert gas cut-off valve 215, the second inert gas cut-off valve 216 and the inert gas release valve 217 are electrically connected with the controller 7. The first inert gas cut-off valve 215, the second inert gas cut-off valve 216 and the inert gas release valve 217 form a three-way interlocking valve, and the pipeline and the engine are inerted.

[0041] The first pipeline is provided with a temperature sensor 21, the third pipeline is provided with a first pressure sensor 24, and the seventh pipeline is provided with a second pressure sensor 29, and the temperature sensor 21, the first pressure sensor 24 and the second pressure sensor 29 are electrically connected with the controller 7. The temperature sensor 21 is used for collecting the temperature value in the first pipeline, and the pressure sensor is used for collecting the pressure value in the pipeline.

[0042] A control method applied to the above-mentioned intelligent lubricating device of the column pin of the circular cooler, the engine starting step: when the engine starts, the first gas cut-off valve 26 and the second gas cut-off valve 27 are opened, and the gas release valve 213 is closed, and the gas starts to be transported. The gas enters from the gas inlet 5, passes through the gas manual valve 22, the filter 23, the flow meter 25, the first gas cut-off valve 26, the second gas cut-off valve 27 and the pressure regulating valve 28, and finally enters the engine through the gas outlet 6.

[0043] The gas leakage treatment step: when the controller 7 collects the gas concentration in the ventilation hood 1 and the gas concentration is greater than the set concentration, or when it is necessary to discharge the abnormal leakage gas in the valve group 2, the multiple air exhaust fans 3 are started to discharge the abnormal leakage gas from the ventilation air outlet 9, and the gas flows in the opposite direction of the gas flow, thereby effectively avoiding the leakage of the combustible gas in the closed place.

[0044] The engine stopping step: when the engine stops, the first gas cut-off valve 26 is closed, the gas release valve 213 is opened, and the second gas cut-off valve 27 is closed according to the preset time delay, and the gas stops being transported.

[0045] Valve group inerting step: when the engine is long-term stopped or the pipeline needs to be inerted, the first gas shut-off valve 26, the second gas shut-off valve 27, the first inert gas shut-off valve 215 and the second inert gas shut-off valve 216 are opened, the inert gas release valve 217 and the gas release valve 213 are closed, and the inert gas enters the valve group 2. The inerting gas enters through the inerting gas inlet 13, passes through the first inert gas shut-off valve 215, the second inert gas shut-off valve 216, the combined check valve 214, the pressure regulating valve 28 and the gas outlet 6, enters the engine, or passes through the second gas shut-off valve 27, the first gas shut-off valve 26, the flowmeter 25, the filter 23, the gas manual valve 22 and the gas inlet 5, enters the pipeline for external gas delivery, and the inerting of the overall structure is completed.

[0046] Valve group stopping inerting step: when the inerting is completed, the first inert gas shut-off valve 4 and the second inert gas shut-off valve 216 are closed, and the inert gas release valve 217 is opened, so that the inerting gas is released.

[0047] Pipeline purging step: when the valve group 2 needs to be purged or the engine is stopped, the air release valve 212, the first gas shut-off valve 26 and the second gas shut-off valve 27 are opened, and the gas release valve 213 is closed, so that the purging air enters the valve group 2. The purging air enters from the purging air inlet 8, passes through the air manual valve 218, the first check valve 210 and the second check valve 211, enters the pipeline for gas delivery, completes the purging of the inerting gas in the pipeline for gas delivery, and the purging air is discharged from the purging air outlet 10.

[0048] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present application, and these will not affect the effect of the implementation of the present application and the practicality of the patent.

Claims

1. A control method of a high safety multifunctional fuel delivery device, which delivery device comprises a valve group (2) in which a fuel gas delivery unit and a controller (7) are provided, characterized in that, The valve group (2) is further provided with an air purging unit and a gas inerting unit, the air purging unit is communicated with the gas delivery unit, the gas inerting unit is communicated with the gas delivery unit, the valve group (2) is installed in the ventilation cover (1), a plurality of air exhaust fans (3) are installed outside the ventilation cover (1) and communicated with the inside of the ventilation cover (1), a gas probe (4) is installed at the connection between the ventilation cover (1) and the air exhaust fan (3), and the gas probe (4), the gas delivery unit, the air purging unit, the gas inerting unit and the plurality of air exhaust fans (3) are electrically connected with the controller (7); The gas delivery unit comprises a gas inlet (5) and a gas outlet (6), the gas inlet (5) is arranged on one side of the ventilation cover (1), the gas outlet (6) is arranged on the other side of the ventilation cover (1), the gas inlet (5) is connected with a gas manual valve (22) through a pipeline, the gas manual valve (22) is connected with a filter (23) through a pipeline, the filter (23) is connected with a flow meter (25) through a pipeline, the flow meter (25) is connected with a first gas shut-off valve (26) through a pipeline, the first gas shut-off valve (26) is connected with a second gas shut-off valve (27) through a pipeline, the second gas shut-off valve (27) is connected with a pressure regulating valve (28) through a pipeline, the pressure regulating valve (28) is communicated with the gas outlet (6) through a pipeline, and the flow meter (25), the first gas shut-off valve (26) and the second gas shut-off valve (27) are electrically connected with the controller (7); The air purging unit comprises a purging air inlet (8) and a purging air outlet (10), a device enclosure (12) is installed on one side of the ventilation cover (1), the purging air inlet (8) is arranged on the side of the ventilation cover (1) close to the gas inlet (5), an air manual valve (218) is installed in the purging air inlet (8), the purging air outlet (10) is arranged on the device enclosure (12), the purging air inlet (8) is connected with a first one-way valve (210) and a second one-way valve (211) connected in sequence, the second one-way valve (211) is connected with the gas manual valve (22), the purging air outlet (10) is connected with an air diffusing valve (212), the air diffusing valve (212) is connected with the flow meter (25) and the first gas shut-off valve (26), and the air diffusing valve (212) is electrically connected with the controller (7). The gas inerting unit comprises an inert gas inlet (13) which is arranged on the ventilation hood (1), the inert gas inlet (13) is connected with a second inert gas cut-off valve (216) through a pipeline, the second inert gas cut-off valve (216) is connected with a purge air outlet (10) through an inert gas diffusion valve (217), the second inert gas cut-off valve (216) is connected with a first inert gas cut-off valve (215) and a combined check valve (214) which are connected in sequence, the combined check valve (214) is connected with a pressure regulating valve (28), the first inert gas cut-off valve (215), the second inert gas cut-off valve (216) and the inert gas diffusion valve (217) are electrically connected with a controller (7); The control method of the high-safety multifunctional fuel delivery device comprises, An engine starting step is used for opening the first gas cut-off valve (26), the second gas cut-off valve (27) and closing the gas diffusion valve (213) when the engine starts, and the gas starts to be delivered from the gas inlet (5) and enters the engine; An engine stopping step is used for closing the first gas cut-off valve (26), opening the gas diffusion valve (213) and closing the second gas cut-off valve (27) according to a preset time delay when the engine stops, and the gas stops being delivered; A gas leakage handling step is used for starting the exhaust fan (3) to discharge the abnormally leaked gas in the ventilation hood (1) from the ventilation air outlet (9) when the gas concentration in the ventilation hood (1) collected by the controller (7) is greater than a set concentration; A valve group inerting step is used for opening the first gas cut-off valve (26), the second gas cut-off valve (27), the first inert gas cut-off valve (215) and the second inert gas cut-off valve (216) and closing the inert gas diffusion valve (217) and the gas diffusion valve (213) when the engine is long-term stopped or the pipeline needs to be inerted, so that the inert gas enters the valve group (2) from the inert gas inlet (13); A valve group stopping inerting step is used for simultaneously closing the first inert gas cut-off valve (215) and the second inert gas cut-off valve (216) and opening the inert gas diffusion valve (217) after the inerting is completed, so that the inerting gas is diffused; A pipeline purging step is used for opening the air diffusion valve (212), the first gas cut-off valve (26) and the second gas cut-off valve (27) and closing the gas diffusion valve (213) when the engine is stopped, so that the purge air enters the valve group (2) from the purge air inlet (8) to purge the valve group (2).

2. The control method of a high safety multifunctional fuel delivery apparatus according to claim 1, characterized by, The device enclosure (12) is provided with a ventilation air outlet (9) at the connection with the ventilation hood (1), the ventilation air outlet (9) is connected with the ventilation hood (1) through a pipeline, and the ventilation air outlet (9) is located on one side of the exhaust fan (3). The device is provided with a ventilation air inlet (11) near one end of the gas outlet (6) of the enclosure (12), and the ventilation air inlet (11) is communicated with the gas outlet (6) through a pipeline.

3. The control method of a high safety multifunctional fuel delivery apparatus according to claim 1, characterized by, A temperature sensor (21) is installed in the pipeline between the gas inlet (5) and the gas manual valve (22), a first pressure sensor (24) is installed in the pipeline between the filter (23) and the flow meter (25), and a second pressure sensor (29) is installed in the pipeline between the pressure regulating valve (28) and the gas outlet (6), and the temperature sensor (21), the first pressure sensor (24) and the second pressure sensor (29) are electrically connected with the controller (7).

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