Intelligent filling pry for methanol fuel ship

Abstract

The utility model relates to the technical field of filling equipment, and particularly discloses an intelligent filling pry for a methanol fuel ship. Comprising a movable box-type pry body, a filling pipeline and a gas return pipeline which are arranged in the box-type pry body, a liquid collecting box which is respectively connected with the filling pipeline and the gas return pipeline and is arranged in the box-type pry body, and a nitrogen inerting device which is respectively connected with the filling pipeline, the gas return pipeline and the liquid collecting box and is arranged in the box-type pry body, a filling control valve is arranged at the output end of the filling pipeline; an air return control valve is arranged at the input end of the air return pipeline, and a dryer is arranged on the air return pipeline and located at the output end of the air return pipeline. According to the utility model, the purity of methanol filling can be effectively improved, and meanwhile, waste caused by residual methanol in the whole system after filling can be effectively avoided; the structure is simple and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filling equipment, and more specifically, to an intelligent filling skid for methanol fuel ships. Background Art

[0002] At present, for ship fuel systems, clean energy is mostly selected, such as methanol fuel. Methanol fuel is a new type of clean fuel made by adding methanol and denatured alcohol additives and blending them with existing national standard gasoline and diesel according to a certain volume ratio or mass ratio through a strict scientific process. On the one hand, methanol can replace traditional fuels such as diesel, which can significantly reduce the emissions of ships and reduce environmental pollution. On the other hand, it can also be used in the propulsion system of ships. Compared with traditional internal combustion engine propulsion systems, it has the characteristics of high efficiency and low emissions. Therefore, methanol has become one of the important means for the shipping industry to achieve emission reduction and environmental protection.

[0003] However, methanol is a colorless and clear liquid with a pungent smell, flammable, toxic, and has high volatility. Therefore, the rational setting of the pipeline of the methanol fuel filling system is particularly important. How to achieve fast, efficient and safe filling has been a problem that people in this field have been researching. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an intelligent filling skid for methanol fuel ships;

[0005] The solution adopted by the utility model to solve the technical problem is:

[0006] An intelligent filling skid for methanol fuel ships includes a movable box-type skid body, a filling pipeline and a return air pipeline installed in the box-type skid body, a liquid collection tank respectively connected to the filling pipeline and the return air pipeline and installed in the box-type skid body, and a nitrogen inerting device respectively connected to the filling pipeline, the return air pipeline and the liquid collection tank and installed in the box-type skid body;

[0007] A filling control valve is provided at the output end of the filling pipeline; a return air control valve is provided at the input end of the return air pipeline, and a dryer is provided on the return air pipeline and at the output end of the return air pipeline.

[0008] In some possible implementation manners, a filter, a filling system, and a flow meter are sequentially arranged on the filling pipeline along the liquid flow direction; the filling control valve is arranged on the side of the flow meter away from the filling system.

[0009] In some possible implementation manners, the filling system includes a first filling pump arranged on the filling pipeline, a filling bypass connected in parallel with the filling pipeline and respectively connected to the liquid collection tank, and a second filling pump arranged on the filling bypass;

[0010] One connection point of the filling bypass with the filling pipeline is set between the filter and the first filling pump, and the other connection point of the filling bypass with the filling pipeline is set between the first filling pump and the flow meter; the connection point of the filling bypass with the liquid collection tank is set between the second filling pump and the flow meter.

[0011] In some possible implementation manners, a circulation pipeline used in cooperation with the filling system is provided between the liquid collection tank and the filling bypass. The circulation pipeline includes a connection pipeline connected to the filling bypass, an input pipeline respectively connected to the connection pipeline and the top of the liquid collection tank, and an output pipeline respectively connected to the bottom of the liquid collection tank and the connection pipeline.

[0012] In some possible implementation manners, a recovery pump is provided on the output pipeline, and a liquid safety valve is provided on the input pipeline.

[0013] In some possible implementation manners, a first recovery pipeline and a second recovery pipeline are provided between the liquid collection tank and the filling pipeline;

[0014] The connection point of the first recovery pipeline with the filling pipeline is set between the filter and the filling system;

[0015] The connection point of the second recovery pipeline with the filling pipeline is set between the flow meter and the filling control valve.

[0016] In some possible implementation manners, a first recovery stop valve is provided on the first recovery pipeline, and a second recovery stop valve is provided on the second recovery pipeline.

[0017] In some possible implementation manners, a third recovery pipeline is provided between the liquid collection tank and the return air pipeline; the connection point of the third recovery pipeline with the return air pipeline is set between the dryer and the return air control valve; a third recovery stop valve is provided on the third return air pipeline.

[0018] In some possible implementation manners, the nitrogen inerting device includes a first purge pipeline respectively connected to the filling pipeline and the return air pipeline, and a second purge pipeline connected to the liquid collection tank;

[0019] The first purge pipeline includes a pipeline one and a pipeline two respectively provided with purge stop valves;

[0020] The connection point of the pipeline one with the filling pipeline is set on the side of the filter away from the filling system; the connection point of the pipeline one with the return air pipeline is set between the dryer and the return air control valve;

[0021] The connection point of the pipeline two with the filling pipeline is set on the side of the filling control valve away from the filling system; the connection point of the pipeline two with the return air pipeline is set on the side of the return air control valve away from the dryer.

[0022] In some possible embodiments, breakaway valves are respectively provided on the return gas pipeline and the filling pipeline. The breakaway valve on the return gas pipeline is arranged on the side of the return gas control valve away from the dryer, and the breakaway valve on the filling pipeline is arranged on the side of the filling control valve away from the flow meter;

[0023] A pressure transmitter is further provided on the filling pipeline, and the pressure transmitter is arranged between the filling control valve and the flow meter.

[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0025] By arranging a dryer on the return gas pipeline, the present utility model ensures the purity of the methanol volatilized gas when the receiving ship returns to the tanker or the filling tank;

[0026] By arranging a liquid collection tank and connecting it to the filling system through a circulation pipeline, the present utility model enables zero emission and zero leakage of methanol, and realizes the recycling of methanol;

[0027] By arranging a recovery pump on the output pipeline, the present utility model reuses the collected methanol in the liquid collection tank through the output pipeline, which can achieve the effects of environmental protection and resource recovery;

[0028] By arranging a nitrogen inerting device, the present utility model is used to inert the system before filling methanol fuel, discharge air, and at the same time, discharge the methanol fuel in the pipeline at the end of filling to ensure safe operation;

[0029] By arranging a breakaway valve device, the present utility model effectively prevents the filling pipeline from being pulled off due to the drifting of the ship and the occurrence of liquid spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the working flow chart of the present utility model;

[0031] Figure 2 is the schematic diagram of the connection relationship of the present utility model;

[0032] Wherein: 1, box-type skid; 2, filling pipeline; 21, filter; 22, filling system; 221, first filling pump; 222, second filling pump; 23, flow meter; 24, pressure transmitter; 25, filling control valve; 3, return gas pipeline; 31, dryer; 32, return gas control valve; 4, liquid collection tank; 41, input pipeline; 411, liquid safety valve; 42, output pipeline; 421, recovery pump; 43, first recovery pipeline; 431, first recovery stop valve; 44, second recovery pipeline; 441, second recovery stop valve; 45, third recovery pipeline; 451, third recovery stop valve; 5, nitrogen inerting device; 51, purge stop valve; 6, breakaway valve; 7, control box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a direct connection or an indirect connection through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. The "first", "second" and similar terms mentioned in this application do not indicate any sequence, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limit either, but indicate that there is at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] The following is a detailed description of the present utility model.

[0035] As Figure 1 - Figure 2 shown:

[0036] An intelligent methanol fuel ship filling skid includes a movable box-shaped skid body 1, a filling pipeline 2 and a return air pipeline 3 installed in the box-shaped skid body 1, a liquid collection tank 4 respectively connected to the filling pipeline 2 and the return air pipeline 3 and installed in the box-shaped skid body 1, and a nitrogen inerting device 5 respectively connected to the filling pipeline 2, the return air pipeline 3 and the liquid collection tank 4 and installed in the box-shaped skid body 1;

[0037] A filling control valve 25 is provided at the output end of the filling pipeline 2; a return air control valve 32 is provided at the input end of the return air pipeline 3, and a dryer 31 is provided on the return air pipeline 3 and at the output end of the return air pipeline 3;

[0038] The setting of the dryer 31 ensures the purity of the methanol volatile gas when the receiving ship returns to the methanol in the tank truck or filling tank. During the filling process, the gas phase spaces of the tank truck or filling tank and the fuel tank of the receiving ship are connected to achieve pressure balance between the gas phase spaces of the tank truck or filling tank and the fuel tank of the receiving ship, and at the same time, gas exchange between the gas phase spaces of the tank truck or filling tank and the fuel tank of the receiving ship and the atmosphere is avoided;

[0039] Specifically, the liquid collection tank 4 is installed at the bottom of the box-shaped skid body 1, and the filling pipeline 2 and the return air pipeline 3 are located above the box-shaped skid body 1, which can realize the recycling of methanol and avoid waste;

[0040] During use, the input end of the filling pipeline 2 is connected to the liquid unloading port of the tank truck or filling tank, and its output end is connected to the filling liquid port of the ship. Methanol is filled into the fuel tank of the ship through the filling system 22 provided on the filling pipeline 2;

[0041] The output end of the return gas pipeline 3 is connected to the gas unloading port of the tank truck or filling tank, and the input end is connected to the filling return gas port of the ship's fuel tank. During filling, the gas phase in the fuel tank will be discharged from the return gas pipeline 3 to the tank truck or filling tank;

[0042] Before filling, all the air in the system is discharged through the nitrogen inerting device 5; after filling is completed, all the residual liquid in the pipeline is transported to the liquid collection tank through the nitrogen inerting device 5 to avoid waste and achieve the recovery and secondary utilization of methanol.

[0043] In some possible implementation manners, a filter 21, a filling system 22, and a flow meter 23 are sequentially arranged on the filling pipeline 2 along the liquid flow direction; the filling control valve 25 is arranged on the side of the flow meter 23 away from the filling system 22.

[0044] Furthermore, the flow meter 23 is a Y-type mass flow meter, which is used to accurately measure the flow rate of methanol filled into the receiving ship to ensure accurate control of the filling volume and avoid overfilling or underfilling;

[0045] The filter 21 is arranged at the input end of the filling pipeline 2. Before the methanol is transported to the filling system 22, the possible impurities are removed through the arranged filter 21 to ensure the cleanliness of the filled methanol and avoid damage to the entire system;

[0046] The filling system 22 is used to pump out and pressurize the filtered methanol from the tank truck or filling tank so as to be transported to the fuel tank of the receiving ship through the pipeline.

[0047] In some possible implementation manners, the filling system 22 includes a first filling pump 221 arranged on the filling pipeline 2, a filling bypass connected in parallel with the filling pipeline 2 and respectively connected to the liquid collection tank 4, and a second filling pump 222 arranged on the filling bypass;

[0048] The connection point of one end of the filling bypass with the filling pipeline 2 is arranged between the filter 21 and the first filling pump 221, and the connection point of the other end of the filling bypass with the filling pipeline 2 is arranged between the first filling pump 221 and the flow meter 23; the connection point of the filling bypass with the liquid collection tank 4 is arranged between the second filling pump 222 and the flow meter 23.

[0049] The filling bypass is set as a filling standby pipeline. When the first filling pump 221 fails, filling can be carried out using the second filling bypass; when the first filling pump 221 is working normally, the second filling bypass is in a normally closed state.

[0050] In some possible embodiments, a circulation pipeline for cooperating with the filling system 22 is provided between the liquid collection tank 4 and the filling bypass. The circulation pipeline includes a connection pipeline connected to the filling bypass, an input pipeline 41 respectively connected to the connection pipeline and the top of the liquid collection tank 4, and an output pipeline 42 respectively connected to the bottom of the liquid collection tank 4 and the connection pipeline.

[0051] The circulation pipeline provided in the liquid collection tank 4 and connected to the filling system 22 reuses the methanol fuel in the liquid collection tank 4, achieving the effects of environmental protection and resource recovery.

[0052] In some possible embodiments, a recovery pump 421 for transporting the methanol collected in the liquid collection tank 4 to the filling system is provided on the output pipeline 42, and a liquid safety valve 411 is provided on the input pipeline 41.

[0053] Specifically, when the pressure in the filling pipeline 2 is too high, the liquid safety valve 411 opens, and part of the liquid will enter the liquid collection tank 4 for collection, thereby reducing the pressure in the filling pipeline 2;

[0054] The recovery pump 421 can transport the methanol liquid collected in the liquid collection tank 4 to the filling pipeline 2 for secondary utilization, and it is filled into the fuel tank of the ship through the filling system 22.

[0055] In some possible embodiments, in order to effectively cooperate with the nitrogen inerting device 5 to recover the liquid in the filling pipeline 2 into the liquid collection tank 4 after filling; a first recovery pipeline 43 and a second recovery pipeline 44 are provided between the liquid collection tank 4 and the filling pipeline 2;

[0056] The connection point of the first recovery pipeline 43 and the filling pipeline 2 is arranged between the filter 21 and the filling system 22;

[0057] The connection point of the second recovery pipeline 44 and the filling pipeline 2 is arranged between the flowmeter 23 and the filling control valve 25;

[0058] A first recovery stop valve 431 is provided on the first recovery pipeline 43, and a second recovery stop valve 441 is provided on the second recovery pipeline 44.

[0059] Specifically, after filling is completed, the first recovery stop valve 431 is opened, and the methanol residual liquid in the pipeline before the filling system 2 is recovered into the liquid collection tank 4 by gravity. To ensure complete recovery, nitrogen purging operation is carried out on this section of the pipeline through the nitrogen inerting device 5; for the pipeline after the filling system 2, the second recovery stop valve 441 is opened, and the methanol residual liquid in the pipeline in the filling system 2 is recovered into the liquid collection tank 4 by gravity. Of course, nitrogen purging operation can be carried out through the nitrogen inerting device 5 to ensure complete recovery;

[0060] Further, when a tank truck is connected to this system for supply, after the filling is completed, it is necessary to recover the methanol liquid in the pipeline in front of the filling system; when a filling tank is connected to this system for supply, it is not necessary to recover the methanol liquid in the pipeline in front of the filling system.

[0061] In some possible embodiments, a third recovery pipeline 45 is provided between the liquid collection tank 4 and the return gas pipeline 3; the connection point of the third recovery pipeline 45 and the return gas pipeline 3 is provided between the dryer 31 and the return gas control valve 32; a third recovery cut-off valve 451 is provided on the third return gas pipeline 3.

[0062] For the recovery of the methanol gas in the return gas pipeline 3, it is carried out by opening the third recovery cut-off valve 451. Of course, nitrogen purging operations can be carried out through the nitrogen inerting device 5 to ensure complete recovery.

[0063] In some possible embodiments, in order to effectively achieve the inerting of the system by the nitrogen inerting device 5 before filling methanol fuel, discharge air, and at the end of filling, discharge all the methanol fuel in the pipelines to ensure safe operation;

[0064] The nitrogen inerting device 5 includes a first purging pipeline respectively connected to the filling pipeline 2 and the return gas pipeline 3, a second purging pipeline connected to the liquid collection tank 4, and a nitrogen cylinder respectively connected to the first purging pipeline and the second purging pipeline;

[0065] The first purging pipeline includes a first pipeline and a second pipeline respectively provided with purging cut-off valves 51 and connected to the nitrogen cylinder;

[0066] The connection point of the first pipeline and the filling pipeline 2 is provided on the side of the filter 21 away from the filling system 22; the connection point of the first pipeline and the return gas pipeline 3 is provided between the dryer 31 and the return gas control valve 32;

[0067] Before filling, by opening the first pipeline, the second pipeline and the second purging pipeline, the inerting of the whole system can be achieved and all the air can be discharged;

[0068] The connection point of the second pipeline and the filling pipeline 2 is provided on the side of the filling control valve 25 away from the filling system 22; the connection point of the second pipeline and the return gas pipeline 3 is provided on the side of the return gas control valve 32 away from the dryer 31;

[0069] The first pipeline and the second pipeline have the same structure. The first pipeline includes a first pipe connected to the return gas pipeline 3, a second pipe connected to the filling pipe, and a conveying pipe for connecting the first pipe, the second pipe and the nitrogen cylinder; there are two groups of purging cut-off valves 51 and they are respectively provided on the first pipe and the second pipe.

[0070] After the filling is completed, methanol in the pipeline on the front side of the filling system 22 is recovered into the liquid collecting tank 4 by opening the purging stop valve 51 and the first recovery stop valve 431 on pipeline one.

[0071] Methanol in the pipeline on the rear side of the filling system 22 is recovered into the liquid collecting tank 4 by opening the purging stop valve 51 and the second recovery stop valve 441 on pipeline two.

[0072] Methanol in the return air pipeline 3 is recovered into the liquid collecting tank 4 by opening the purging stop valve 51 and the third recovery stop valve 451 on pipeline one, pipeline two, and the second purging pipeline.

[0073] In some possible embodiments, breakaway valves 6 are respectively arranged on the return air pipeline 3 and the filling pipeline 2. The breakaway valve 6 on the return air pipeline 3 is arranged on the side of the return air control valve 32 away from the dryer 31, and the breakaway valve 6 on the filling pipeline 2 is arranged on the side of the filling control valve 25 away from the flowmeter 23.

[0074] A pressure transmitter 24 is further arranged on the filling pipeline 2, and the pressure transmitter 24 is arranged between the filling control valve 25 and the flowmeter 23.

[0075] When the pressure transmitter 24 is provided, the connection point of the second recovery pipeline 44 and the filling pipeline 2 is arranged between the pressure transmitter 24 and the filling control valve 25.

[0076] In the present utility model, through the settings of the pressure transmitter 24, the breakaway valve 6, the return air control valve 32, and the filling control valve 25, it is used to monitor and protect the entire system from safety risks such as overpressure and leakage; the setting of the breakaway valve 6 effectively prevents the filling pipe from being pulled off due to the ship's drift and the occurrence of liquid spraying phenomenon.

[0077] Further, a control box 7 is also arranged in the box - type skid 1, and the control valve is connected to each valve, the filling pump, the pressure transmitter 24, the flowmeter 23, and the recovery pump 421; one - key operation can be realized to improve the filling efficiency.

[0078] Further, a liquid level gauge connected to the control box is arranged on the liquid collecting tank 4.

[0079] The present utility model is not limited to the foregoing specific embodiments. The present utility model extends to any new feature or any new combination disclosed in this specification, as well as any new combination of the steps of any new method or process disclosed.

Claims

1. An intelligent filling skid for methanol fuel ships, characterized in that, It includes a movable box - type skid body, a filling pipeline and a return air pipeline installed in the box - type skid body, a liquid collection tank connected to the filling pipeline and the return air pipeline respectively and installed in the box - type skid body, and a nitrogen inerting device connected to the filling pipeline, the return air pipeline and the liquid collection tank respectively and installed in the box - type skid body; A filling control valve is arranged at the output end of the filling pipeline; a return air control valve is arranged at the input end of the return air pipeline, and a dryer is arranged on the return air pipeline and at the output end of the return air pipeline.

2. The intelligent filling skid for methanol fuel ships according to claim 1, wherein A filter, a filling system, and a flowmeter are sequentially arranged on the filling pipeline along the liquid flow direction; the filling control valve is arranged on the side of the flowmeter away from the filling system.

3. The intelligent filling skid for methanol fuel ships according to claim 2, wherein The filling system includes a first filling pump arranged on the filling pipeline, a filling bypass connected in parallel with the filling pipeline and respectively connected to the liquid collection tank, and a second filling pump arranged on the filling bypass; The connection point of one end of the filling bypass with the filling pipeline is arranged between the filter and the first filling pump, and the connection point of the other end of the filling bypass with the filling pipeline is arranged between the first filling pump and the flowmeter; the connection point of the filling bypass with the liquid collection tank is arranged between the second filling pump and the flowmeter.

4. The intelligent filling skid for methanol fuel ships according to claim 2, characterized in that, A circulation pipeline for cooperating with the filling system is arranged between the liquid collection tank and the filling bypass. The circulation pipeline includes a connection pipeline connected to the filling bypass, an input pipeline respectively connected to the connection pipeline and the top of the liquid collection tank, and an output pipeline respectively connected to the bottom of the liquid collection tank and the connection pipeline.

5. The intelligent filling skid for methanol fuel ships according to claim 4, characterized in that, A recovery pump is arranged on the output pipeline, and a liquid safety valve is arranged on the input pipeline.

6. The intelligent filling skid for methanol fuel ships according to claim 1, characterized in that, A first recovery pipeline and a second recovery pipeline are arranged between the liquid collection tank and the filling pipeline; The connection point of the first recovery pipeline with the filling pipeline is arranged between the filter and the filling system; The connection point of the second recovery pipeline with the filling pipeline is arranged between the flowmeter and the filling control valve.

7. The intelligent filling skid for methanol fuel ships according to claim 6, wherein A first recovery stop valve is arranged on the first recovery pipeline, and a second recovery stop valve is arranged on the second recovery pipeline.

8. The intelligent filling skid for methanol fuel ships according to claim 1, characterized in that, A third recovery pipeline is arranged between the liquid collection tank and the return air pipeline; the connection point of the third recovery pipeline with the return air pipeline is arranged between the dryer and the return air control valve; a third recovery stop valve is arranged on the third recovery pipeline.

9. The intelligent filling skid for methanol fuel ships according to claim 1, characterized in that, The nitrogen inerting device includes a first purge pipeline respectively connected to the filling pipeline and the return air pipeline, and a second purge pipeline connected to the liquid collection tank; The first purge pipeline includes pipeline one and pipeline two respectively provided with purge stop valves; The connection point of pipeline one with the filling pipeline is arranged on the side of the filter away from the filling system; the connection point of pipeline one with the return air pipeline is arranged between the dryer and the return air control valve; The connection point of pipeline two with the filling pipeline is arranged on the side of the filling control valve away from the filling system; the connection point of pipeline two with the return air pipeline is arranged on the side of the return air control valve away from the dryer.

10. According to claim 1, a methanol - fuel ship intelligent filling skid, characterized in that, Pull - off valves are respectively arranged on the return air pipeline and the filling pipeline. The pull - off valve on the return air pipeline is arranged on the side of the return air control valve away from the dryer, and the pull - off valve on the filling pipeline is arranged on the side of the filling control valve away from the flowmeter; A pressure transmitter is also provided on the filling pipeline, and the pressure transmitter is arranged between the filling control valve and the flowmeter.

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