Fuel motor car system for large ship main engine test

Abstract

The invention provides a fuel motor car system for a large ship main engine test, which is provided with an oil supply pipeline for connecting an oil outlet of an oil tank with an oil inlet platform and an oil return pipeline for connecting an oil return opening of the oil tank with an oil return end of the platform, and is characterized by comprising a fuel circulating system for supplying and returning fuel, the oil pump is arranged on an oil supply pipeline; the metering system is used for measuring the flow of supplied oil and returned oil and comprises a first flow meter arranged on the oil supply pipeline and a second flow meter arranged on the oil return pipeline; and the filtering system is used for performing multi-stage filtering on the supplied oil and the returned oil, and comprises a multi-stage filter arranged on the oil supply pipeline and a multi-stage filter arranged on the oil return pipeline.

Description

Technical Field

[0001] This invention relates to the field of marine main engine testing systems, and in particular to an outdoor fuel-powered vehicle system for testing large marine main engines. Background Technology

[0002] After the main engine of a large ship is manufactured and undergoes factory testing, an auxiliary system, including a fuel system, needs to be established on land to ensure the normal operation of the main engine. Traditionally, auxiliary systems are located indoors. Constructing a traditional indoor auxiliary system requires civil engineering work, and from project approval to completion, it typically takes about two years. Including equipment procurement and installation, the entire process usually takes two to three years before it can be put into use. Indoor fuel systems contain Class C flammable liquids such as fuel oil and lubricating oil, which are strictly controlled substances. Therefore, the construction requirements for indoor fuel systems are extremely stringent, and the entire construction process is rigorous, complex, and time-consuming.

[0003] Given the current situation, in today's highly competitive shipbuilding market, there is a need for a ship main engine testing system that can be quickly and reliably deployed. Summary of the Invention

[0004] In order to solve the above problems, the present invention aims to provide an outdoor fuel-powered vehicle system for testing large ship main engines.

[0005] This invention provides a fuel-powered vehicle system for testing large ship main engines, comprising a fuel supply pipeline connecting the fuel tank outlet to the fuel inlet platform and a return pipeline connecting the fuel tank return outlet to the platform return end. The fuel-powered vehicle system includes: a fuel circulation system for fuel supply and return, comprising a fuel pump installed on the fuel supply pipeline; a metering system for measuring the flow rates of the fuel supply and return, comprising a first flow meter installed on the fuel supply pipeline and a second flow meter installed on the return pipeline; and a filtration system for multi-stage filtration of the fuel supply and return, comprising multi-stage filters installed on the fuel supply pipeline and multi-stage filters installed on the return pipeline.

[0006] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the fuel circulation system includes a first control valve, a coarse filter, a circulation pump unit, a first check valve, and a second control valve arranged sequentially in the fuel output direction on the main fuel supply pipeline. The first control valve is connected to the fuel tank outlet. A first branch of the fuel supply pipeline is also connected between the coarse filter and the circulation pump unit on the main fuel supply pipeline. The other end of the first branch of the fuel supply pipeline is connected to the output end of the second control valve on the main fuel supply pipeline. A throttle valve is provided on the first branch of the fuel supply pipeline.

[0007] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following feature: the pore size of the coarse filter is 200 μm.

[0008] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the circulating pump unit includes an oil pump body, the oil pump body is connected to a safety valve, and pressure gauges are respectively provided at the input end and the output end of the oil pump body.

[0009] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the fuel circulation system further includes a second check valve and a first ball valve arranged sequentially on the main return pipeline in the direction of fuel return, and the first ball valve is connected to the return port of the fuel tank.

[0010] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the metering system further includes a second ball valve connected to the input end of the first flow meter on the main oil supply pipeline, a third ball valve connected to the output end of the first flow meter, a second branch oil supply pipeline connected to the input end of the second ball valve on the main oil supply pipeline, the other end of the second branch oil supply pipeline connected to the output end of the third ball valve on the main oil supply pipeline, and a fourth ball valve provided on the second branch oil supply pipeline.

[0011] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the metering system further includes a fifth ball valve connected to the input end of the second flow meter on the main return oil pipeline and a sixth ball valve connected to the output end of the second flow meter. A return oil pipeline branch is also connected to the input end of the fifth ball valve on the main return oil pipeline. The other end of the return oil pipeline branch is connected to the output end of the sixth ball valve on the main return oil pipeline. A seventh ball valve is provided on the return oil pipeline branch.

[0012] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the filtration system includes a first double filter, a third control valve, a magnetic filter, a fourth control valve, a first polymer filter, and a fifth control valve arranged sequentially in the fuel supply pipeline main line in the fuel output direction; the fifth control valve is connected to the fuel inlet platform; a third branch of the fuel supply pipeline is also connected between the magnetic filter and the fourth control valve on the fuel supply pipeline main line; the other end of the third branch of the fuel supply pipeline is connected to the output end position of the fifth control valve on the fuel supply pipeline main line; and a sixth control valve is provided on the third branch of the fuel supply pipeline.

[0013] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the filtration system further includes a pressure gauge, an eighth ball valve, a second double filter, a seventh control valve, and a second polymer filter arranged sequentially on the main return oil pipeline in the direction of fuel return, with the pressure gauge connected to the return oil end of the platform.

[0014] Furthermore, the fuel-powered vehicle system for testing large ship main engines provided by the present invention may also have the following features: the pore size of the first polymer filter and the second polymer filter is 10 μm, and the pore size of the first dual filter and the second dual filter is 25 μm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The fuel-powered vehicle system for testing large ship main engines of the present invention is equipped with a fuel circulation system, a metering system, and a filtration system. It can realize fuel circulation, multi-stage fuel filtration, and statistics of fuel inlet and outlet flow rates, providing a stable energy supply for the ship's main engine. Moreover, all components and equipment are outdoor-type. The system has a modular skid-integrated structure, which can facilitate the rapid construction of large ship main engine testing systems and significantly reduce the impact of project construction cycle on test production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a fuel-powered vehicle system for testing large ship main engines in an embodiment of the present invention. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the technical solution of this invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the better description of the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation.

[0020] See Figure 1 This embodiment provides a fuel-powered locomotive system for testing large ship main engines, which has a fuel supply pipeline (see...). Figure 1(Lower and middle section of the pipeline) and return oil pipeline (see) Figure 1 The upper and middle sections of the pipeline include a fuel supply pipeline connecting the fuel tank outlet to the fuel inlet platform, and a return pipeline connecting the fuel tank return port to the platform return end. This fuel-powered vehicle system includes a fuel circulation system 1 (see...). Figure 1 Structure within the dashed box on the left), Measurement System 2 (see...) Figure 1 (Structure within the dashed box in the middle), Filtering System 3 (see...) Figure 1 (Structure within the dashed box on the right).

[0021] The fuel circulation system is used for fuel supply and return. In the fuel supply line, the fuel circulation system includes a first control valve 10, a coarse filter 11, a circulation pump unit, a first check valve 16, and a second control valve 17, arranged sequentially in the fuel output direction on the main fuel supply line. The first control valve 10 is connected to the fuel tank outlet. A first branch of the fuel supply line is also connected between the coarse filter 11 and the circulation pump unit on the main fuel supply line. The other end of the first branch is connected to the output end of the second control valve 17 on the main fuel supply line. A throttle valve 13 is installed on the first branch. The circulation pump unit includes a pump body 14, which is connected to a safety valve. Pressure gauges 12 and 15 are installed at the input and output ends of the pump body 14, respectively, and each pressure gauge is equipped with an instrument valve. Preferably, the coarse filter 11 has a pore size of 200 μm.

[0022] In the return oil line, the fuel circulation system includes a second check valve 19 and a first ball valve 20 arranged sequentially on the main line of the return oil line in the direction of fuel return. The first ball valve 20 is connected to the return oil port of the fuel tank.

[0023] The metering system is used to measure the flow rates of fuel supply and return, as well as for bypass control. In the fuel supply line, the metering system is connected to the output end of the fuel circulation system and includes a second ball valve 21, a first flow meter 22, and a third ball valve 24 arranged sequentially in the direction of fuel output on the main fuel supply line. A second branch of the fuel supply line is also connected to the input end of the second ball valve 21 on the main fuel supply line. The other end of the second branch of the fuel supply line is connected to the output end of the third ball valve 24 on the main fuel supply line. A fourth ball valve 23 is installed on the second branch of the fuel supply line.

[0024] In the return oil line, the metering system includes a fifth ball valve 25, a second flow meter 26, and a sixth ball valve 28 arranged sequentially on the main return oil line in the direction of fuel return. A return oil line branch is also connected to the input end of the fifth ball valve 25 on the main return oil line. The other end of the return oil line branch is connected to the output end of the sixth ball valve 28 on the main return oil line. A seventh ball valve 27 is installed on the return oil line branch.

[0025] The filtration system is used for multi-stage filtration of fuel supply and return. In the fuel supply line, the filtration system includes a first dual filter 29, a third control valve 30, a magnetic filter 31, a fourth control valve 32, a first polymer filter 34, and a fifth control valve 35, arranged sequentially in the direction of fuel output on the main fuel supply line. The fifth control valve 35 is connected to the fuel inlet position. A third branch of the fuel supply line is also connected between the magnetic filter 31 and the fourth control valve 32. The other end of the third branch of the fuel supply line is connected to the output end of the fifth control valve 35 on the main fuel supply line. A sixth control valve 33 is installed on the third branch of the fuel supply line.

[0026] In the return oil line, the filtration system includes a pressure gauge 36, an eighth ball valve 37, a second dual filter 38, a seventh control valve 39, and a second polymer filter 40, arranged sequentially along the main return oil line in the direction of fuel return. The pressure gauge 36 is connected to the output side of the return oil end of the station and is equipped with an instrument valve. As a preferred embodiment, the pore size of the first polymer filter 34 and the second polymer filter 40 is 10 μm, and the pore size of the first dual filter 29 and the second dual filter 38 is 25 μm.

[0027] As a preferred option, the control valve in this embodiment can be either a ball valve or a piston valve, depending on actual needs.

[0028] All components and equipment in the fuel-powered vehicle system for large ship main engine testing in this embodiment are outdoor-type. Furthermore, the fuel-powered vehicle system for large ship main engine testing in this embodiment is a modular skid-integrated structure. This skid integrates the aforementioned fuel circulation system, metering system, and filtration system onto a single base (not shown in the figure). This integrated design, forming a skid-mounted structure, facilitates the rapid construction of large ship main engine testing systems, significantly reducing the impact of project construction cycles on test production.

[0029] The operation of the fuel-powered vehicle system used for large ship main engine testing in this embodiment is as follows:

[0030] Due to the action of the circulation pump, fuel is drawn from the fuel tank and delivered through the fuel supply line. It first passes through a coarse filter and then enters the circulation pump. Next, the fuel enters the metering system, where the first flow meter measures the fuel flow rate at the designated station. Then, the fuel enters the filtration system, undergoing multi-stage filtration through a first dual filter, a magnetic filter, and a first polymer filter. The cleaned fuel then enters the corresponding station. From the station, the fuel enters the return line, first entering the filtration system again, undergoing multi-stage filtration through a second dual filter and a second polymer filter to ensure the cleanliness of the returned fuel. Then, the fuel enters the metering system, where the second flow meter measures the fuel flow rate at the station. Finally, the fuel returns to the fuel tank through a second check valve and a first ball valve. The metering system is equipped with branch lines and corresponding valves on both the outlet and return lines to ensure proper fuel supply and return in case of flow meter failure. Additionally, to meet the diesel engine's fuel supply requirements, the fuel system typically supplies more fuel than actually needed during testing, returning the fuel to the fuel tank through the return system.

[0031] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A fuel-powered vehicle system for testing large ship main engines, comprising a fuel supply pipeline connecting the fuel tank outlet to the platform inlet and a return pipeline connecting the fuel tank return outlet to the platform return outlet, characterized in that, The fuel-powered train system includes: A fuel circulation system, used for fuel supply and return, including a fuel pump installed on the fuel supply line; A metering system for measuring the flow rate of oil supply and return includes a first flow meter installed on the oil supply pipeline and a second flow meter installed on the oil return pipeline. The filtration system is used to perform multi-stage filtration of the oil supply and return lines, including multi-stage filters installed on the oil supply line and multi-stage filters installed on the oil return line.

2. The fuel-powered vehicle system for testing large ship main engines as described in claim 1, characterized in that: in, The fuel circulation system includes a first control valve, a coarse filter, a circulation pump unit, a first check valve, and a second control valve, arranged sequentially on the main fuel supply line in the direction of fuel output. The first control valve is connected to the oil tank outlet. The main oil supply pipeline is connected to a first branch oil supply pipeline between the coarse filter and the circulating pump unit. The other end of the first branch oil supply pipeline is connected to the output end of the main oil supply pipeline corresponding to the second control valve. A throttle valve is installed on the first branch oil supply pipeline.

3. The fuel-powered vehicle system for testing large ship main engines as described in claim 2, characterized in that: in, The coarse filter has a pore size of 200 μm.

4. The fuel-powered vehicle system for testing large ship main engines as described in claim 2, characterized in that: in, The circulating pump unit includes an oil pump body, which is connected to a safety valve. Pressure gauges are installed at the input and output ends of the oil pump body, respectively.

5. The fuel-powered vehicle system for testing large ship main engines as described in claim 2, characterized in that: in, The fuel circulation system also includes a second check valve and a first ball valve arranged sequentially on the main return pipeline in the direction of fuel return, with the first ball valve connected to the fuel tank return port.

6. The fuel-powered vehicle system for testing large ship main engines as described in claim 1, characterized in that: in, The metering system also includes a second ball valve connected to the input end of the first flow meter and a third ball valve connected to the output end of the first flow meter, both installed on the main oil supply pipeline. The main oil supply pipeline is connected to a second branch oil supply pipeline at the input end of the second ball valve. The other end of the second branch oil supply pipeline is connected to the output end of the main oil supply pipeline corresponding to the third ball valve. A fourth ball valve is provided on the second branch oil supply pipeline.

7. The fuel-powered vehicle system for testing large ship main engines as described in claim 6, characterized in that: in, The metering system also includes a fifth ball valve connected to the input end of the second flow meter on the main return oil pipeline and a sixth ball valve connected to the output end of the second flow meter. The main return oil pipeline is connected to a branch return oil pipeline at the input end of the fifth ball valve. The other end of the branch return oil pipeline is connected to the output end of the main return oil pipeline corresponding to the sixth ball valve. A seventh ball valve is installed on the branch return oil pipeline.

8. The fuel-powered vehicle system for testing large ship main engines as described in claim 1, characterized in that: in, The filtration system includes a first dual filter, a third control valve, a magnetic filter, a fourth control valve, a first polymer filter, and a fifth control valve, arranged sequentially along the fuel output direction on the main fuel supply line. The fifth control valve is connected to the oil inlet of the platform. The main oil supply pipeline is connected to a third branch oil supply pipeline between the magnetic filter and the fourth control valve. The other end of the third branch oil supply pipeline is connected to the output end of the main oil supply pipeline corresponding to the fifth control valve. A sixth control valve is provided on the third branch oil supply pipeline.

9. The fuel-powered vehicle system for testing large ship main engines as described in claim 8, characterized in that: in, The filtration system also includes a pressure gauge, an eighth ball valve, a second double filter, a seventh control valve, and a second polymer filter, which are arranged sequentially on the main return oil pipeline in the direction of fuel return. The pressure gauge is connected to the return oil end of the platform.

10. The fuel-powered vehicle system for testing large ship main engines as described in claim 9, characterized in that: in, The pore size of the first polymer filter and the second polymer filter is 10 μm. The pore size of the first dual filter and the second dual filter is 25 μm.

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