Methanol consumption measurement and temperature and pressure control device

Abstract

The utility model belongs to the technical field of methanol fuel engines, and discloses a methanol consumption measurement and temperature and pressure control device which comprises a methanol fuel barrel provided with a conveying pipeline connected to a methanol fuel engine. A methanol conveying pump, a coil pipe section located behind the methanol conveying pump, a pressure reducing valve located between the methanol conveying pump and the coil pipe section and a Coriolis flow meter located behind the coil pipe section are arranged on the conveying pipeline, the coil pipe section is arranged in a cooling water tank, and a water inlet pipeline and a water outlet pipeline are arranged on the cooling water tank; a water pump and a water temperature heater are arranged on the water inlet pipeline, the Coriolis flow meter is used for measuring the consumption of methanol fuel, and a methanol pressure measuring sensor and a methanol temperature measuring sensor are arranged at the liquid outlet end of the Coriolis flow meter. According to the methanol consumption measurement and temperature and pressure control device, the conveying process of methanol fuel is simplified, the stability of the state of the methanol fuel is improved, and the accuracy of a measurement result is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to methanol fuel engine technical field especially relates to a methanol consumption measurement and temperature and pressure control device. BACKGROUND

[0002] Methanol as a clean fuel, in engine application is paid more and more attention to. However, the existing methanol consumption measurement technology has the problems of insufficient precision and high cost. The existing measurement means usually relies on mechanical or thermal mass flow meter, these devices not only have complex structure, maintenance difficulty, but also are sensitive to environmental changes, influence measurement stability. In addition, the existing technology also has defects in temperature and pressure control of methanol fuel, leading to unstable engine performance. SUMMARY

[0003] Based on the above problems, the purpose of the utility model is to provide a methanol consumption measurement and temperature and pressure control device to accurately monitor the methanol fuel consumption of methanol engine during operation, reduce cost and realize effective control of the state of methanol fuel entering the engine.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A methanol consumption measurement and temperature and pressure control device, comprising a methanol fuel tank, a delivery pipeline connected to a methanol fuel engine is arranged on the methanol fuel tank, a methanol delivery pump, a coil section located behind the methanol delivery pump, a pressure reducing valve located between the methanol delivery pump and the coil section, and a Coriolis flowmeter located behind the coil section are arranged on the delivery pipeline, the coil section is arranged in a cooling water tank, water inlet pipeline and water outlet pipeline are arranged on the cooling water tank, a water pump and a water temperature heater are arranged on the water inlet pipeline, the Coriolis flowmeter is used for measuring the consumption of methanol fuel, a methanol pressure measurement sensor for monitoring the pressure of methanol fuel and a methanol temperature measurement sensor for monitoring the temperature of methanol fuel are arranged at the liquid outlet end of the Coriolis flowmeter.

[0006] As an optional scheme, a proportional adjusting valve is further arranged on the water inlet pipeline, a backflow branch communicating with the water outlet pipeline is arranged on the proportional adjusting valve, and the proportional adjusting valve is used for adjusting the flow of chilled water entering the cooling water tank.

[0007] As an optional scheme, a water temperature sensor is arranged in the cooling water tank, and the water temperature sensor is used for monitoring the temperature of chilled water in the cooling water tank in real time.

[0008] As an optional scheme, an overflow pipeline communicating with the methanol fuel tank is arranged on the delivery pipeline and located between the methanol delivery pump and the pressure reducing valve, and a pressure relief valve is arranged on the overflow pipeline.

[0009] As an alternative, a primary filter is arranged on the delivery pipeline between the methanol fuel tank and the methanol delivery pump, and the primary filter is used to coarsely filter the methanol fuel.

[0010] As an alternative, a secondary filter is arranged on the delivery pipeline between the Coriolis flow meter and the methanol fuel engine, and the secondary filter is used to finely filter the methanol fuel.

[0011] The methanol consumption measurement and temperature-pressure control device accurately measures the consumption of the methanol fuel through the Coriolis flow meter, and monitors the temperature and pressure of the methanol fuel when entering the engine through the methanol pressure measurement sensor and the methanol temperature measurement sensor, and then regulates the pressure of the methanol fuel through the pressure reducing valve and regulates the temperature of the methanol fuel through the cooling water tank, thereby simplifying the delivery process of the methanol fuel, improving the stability of the methanol fuel state, ensuring the accuracy of the measurement results, and further stabilizing the engine performance. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the methanol consumption measurement and temperature-pressure control device provided by the embodiment of the present application.

[0013] In the drawings:

[0014] 1, methanol fuel tank; 2, methanol fuel engine; 3, delivery pipeline; 4, methanol delivery pump; 5, coil section; 6, pressure reducing valve; 7, Coriolis flow meter; 8, cooling water tank; 9, water inlet pipeline; 10, water outlet pipeline; 11, water pump; 12, water temperature heater; 13, methanol pressure measurement sensor; 14, methanol temperature measurement sensor; 15, proportional regulating valve; 16, backflow branch; 17, water temperature sensor; 18, overflow pipeline; 19, pressure relief valve; 20, primary filter; 21, secondary filter. DETAILED DESCRIPTION

[0015] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate description, only the parts related to the present application are shown in the drawings, not all structures.

[0016] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element internal communication or two element mutual action relation.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0017] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, can also include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0018] In the description of the embodiment, the terms "on", "under", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0019] Please refer to Figure 1 As shown in the preferred embodiment provides a kind of methanol consumption measurement and temperature-pressure control device, including methanol fuel tank 1, methanol fuel tank 1 is provided with the delivery pipeline 3 connected to methanol fuel engine 2, delivery pipeline 3 is provided with methanol delivery pump 4, coil section 5 located in the rear of methanol delivery pump 4, pressure reducing valve 6 between methanol delivery pump 4 and coil section 5 and Coriolis flowmeter 7 located in the rear of coil section 5, coil section 5 is arranged in cooling water tank 8, cooling water tank 8 is provided with water inlet line 9 and water outlet line 10, water inlet line 9 is provided with water pump 11 and water temperature heater 12, Coriolis flowmeter 7 is used to measure the consumption of methanol fuel, the outlet end of Coriolis flowmeter 7 is provided with methanol pressure measuring sensor 13 for monitoring the pressure of methanol fuel and methanol temperature measuring sensor 14 for monitoring the temperature of methanol fuel.

[0020] Thus, the consumption of the methanol fuel is accurately measured by the Coriolis flowmeter 7, and the temperature and pressure of the methanol fuel entering the methanol fuel engine 2 are monitored by the methanol pressure measuring sensor 13 and the methanol temperature measuring sensor 14 respectively, and the pressure of the methanol fuel is regulated by the pressure reducing valve 6 and the temperature of the methanol fuel is regulated by the cooling water tank 8, thereby simplifying the delivery process of the methanol fuel, improving the stability of the methanol fuel state, and ensuring the accuracy of the measurement results.

[0021] The Coriolis flowmeter 7 has high-precision measurement capability and can accurately measure the consumption of the methanol fuel. The Coriolis flowmeter 7 is a prior art, and its principle is not further described here. The methanol pressure measuring sensor 13 and the methanol temperature measuring sensor 14 are both connected to the control unit signal, and the control unit regulates the pressure reducing valve 6, the water temperature heater 12, etc. according to the needs, so as to realize real-time monitoring and adjustment of the delivery pressure and temperature of the methanol fuel. The coil section 5 is completely immersed in the cooling water tank 8, and is used to cool or heat the methanol fuel passing through the coil section 5.

[0022] Optionally, a proportional regulating valve 15 is further arranged on the water inlet pipeline 9, and a backflow branch 16 communicating with the water outlet pipeline 10 is arranged on the proportional regulating valve 15. The proportional regulating valve 15 is used to regulate the flow of the chilled water entering the cooling water tank 8. Specifically, the temperature measurement value of the methanol temperature measuring sensor 14 is taken as the input parameter of the proportional regulating valve 15, and the flow of the chilled water entering the cooling water tank 8 is adjusted in real time according to the temperature of the methanol fuel, so as to adjust the water temperature in the cooling water tank 8.

[0023] In particular, the water temperature heater 12 is used to heat the chilled water, so as to prevent the water temperature in the cooling water tank 8 from being too low, so that the temperature of the methanol fuel is not lower than the required temperature. The specific implementation form can be a heating resistance wire.

[0024] Further, the water temperature sensor 17 is arranged in the cooling water tank 8, and is used to monitor the temperature of the chilled water in the cooling water tank 8 in real time, so as to prevent the temperature in the cooling water tank 8 from being too high.

[0025] Optionally, the overflow pipeline 18 communicating with the methanol fuel tank 1 is arranged on the delivery pipeline 3 and located between the methanol delivery pump 4 and the pressure reducing valve 6. The pressure relief valve 19 is arranged on the overflow pipeline 18, and is used to reduce the pressure when the pressure in the methanol fuel delivery pipeline 3 is too high, and to re-deliver the methanol fuel into the methanol fuel tank 1.

[0026] Optionally, the primary filter 20 is arranged on the delivery pipeline 3 and located between the methanol fuel tank 1 and the methanol delivery pump 4, and is used to coarsely filter the methanol fuel.

[0027] Optionally, a secondary filter 21 is arranged on the delivery pipeline 3 between the Coriolis flowmeter 7 and the methanol fuel engine 2, and is used to filter the methanol fuel.

[0028] Specific working principle:

[0029] 1) During the test of the methanol fuel engine 2, the methanol fuel is pumped out from the methanol fuel tank 1 by the methanol delivery pump 4, and flows through the primary filter 20 to remove impurities via the delivery pipeline 3 (preferably a stainless steel pipeline).

[0030] 2) After the methanol fuel flows out from the methanol delivery pump 4, it passes through the pressure reducing valve 6, and the set value of the pressure reducing valve 6 is adjusted according to the measured value of the methanol pressure measuring sensor 13, so as to reduce the delivery pressure in the delivery pipeline 3 to the required fuel pressure of the methanol fuel engine 2. When the pressure in the delivery pipeline 3 is too high, the system pressure is reduced by the pressure relief valve 19, and the methanol fuel branched off by the pressure relief is re-delivered to the methanol fuel tank 1.

[0031] 3) After passing through the pressure reducing valve 6, the methanol fuel is cooled or heated by the coil section 5, and the coil section 5 is completely immersed in the cooling water tank 8. The water pump 11 is used for the circulating work of pumping the chilled water in the cooling water tank 8; the water temperature heater 12 heats the chilled water to the target temperature; the proportional regulating valve 15 adjusts the flow of the chilled water entering the cooling water tank 8 in real time according to the measured value of the methanol temperature measuring sensor 14, so as to adjust the water temperature in the cooling water tank 8.

[0032] 4) After passing through the coil section 5, the methanol fuel flows through the Coriolis flowmeter 7 to accurately measure the fuel consumption of the methanol fuel engine 2.

[0033] 5) After passing through the Coriolis flowmeter 7, the methanol fuel flows through the secondary filter 21 and is then provided to the methanol fuel engine 2 for use.

[0034] In the figure, the solid arrow indicates the flow direction of the methanol fuel, and the hollow arrow indicates the flow direction of the chilled water.

[0035] Therefore, the methanol fuel supply system composed of the methanol fuel tank 1, the delivery pipeline 3, the primary filter 20, the methanol delivery pump 4, the pressure reducing valve 6, the pressure relief valve 19, the Coriolis flowmeter 7, the secondary filter 21, the methanol pressure measuring sensor 13 and the methanol temperature measuring sensor 14 not only simplifies the fuel delivery process, but also improves the accuracy and reliability of the entire measurement process; the methanol fuel cooling system composed of the cooling water tank 8, the water pump 11, the water temperature heater 12, the proportional regulating valve 15 and the water temperature sensor 17 can adjust the temperature of the methanol fuel to ensure that it maintains a constant temperature during the delivery process, thereby avoiding the influence of temperature fluctuations on the measurement results; the methanol fuel supply system and the methanol fuel cooling system are designed to be modular, which is convenient for installation, maintenance and upgrading.

[0036] In summary, the methanol consumption measurement and temperature and pressure control device design focuses on cost-effectiveness and ease of operation, making it particularly suitable for various types of methanol fuel engines below 20L, with particularly broad market application prospects, and compared with the prior art, has the advantages of low cost, high precision and easy maintenance.

[0037] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A methanol consumption measuring and temperature-pressure control device, characterized by, The methanol fuel tank (1) is provided with a delivery pipeline (3) connected to a methanol fuel engine (2), the delivery pipeline (3) is provided with a methanol delivery pump (4), a coil section (5) behind the methanol delivery pump (4), a pressure reducing valve (6) between the methanol delivery pump (4) and the coil section (5), and a Coriolis flowmeter (7) behind the coil section (5), the coil section (5) is arranged in a cooling water tank (8), the cooling water tank (8) is provided with an inlet water pipeline (9) and an outlet water pipeline (10), the inlet water pipeline (9) is provided with a water pump (11) and a water temperature heater (12), the Coriolis flowmeter (7) is used to measure the consumption of methanol fuel, the outlet of the Coriolis flowmeter (7) is provided with a methanol pressure measuring sensor (13) for monitoring the pressure of the methanol fuel and a methanol temperature measuring sensor (14) for monitoring the temperature of the methanol fuel.

2. The apparatus according to claim 1, wherein The inlet water pipeline (9) is also provided with a proportional regulating valve (15), the proportional regulating valve (15) is provided with a backflow branch (16) communicating with the outlet water pipeline (10), the proportional regulating valve (15) is used to adjust the flow of chilled water entering the cooling water tank (8).

3. The apparatus according to claim 1, wherein The cooling water tank (8) is provided with a water temperature sensor (17) for real-time monitoring of the temperature of the chilled water in the cooling water tank (8).

4. The apparatus according to claim 1, wherein The delivery pipeline (3) is provided with an overflow pipeline (18) communicating with the methanol fuel tank (1) between the methanol delivery pump (4) and the pressure reducing valve (6), the overflow pipeline (18) is provided with a pressure relief valve (19).

5. The apparatus according to claim 1, wherein The delivery pipeline (3) is provided with a primary filter (20) between the methanol fuel tank (1) and the methanol delivery pump (4), the primary filter (20) is used to coarsely filter the methanol fuel.

6. The apparatus according to claim 1, wherein The delivery pipeline (3) is provided with a secondary filter (21) between the Coriolis flowmeter (7) and the methanol fuel engine (2), the secondary filter (21) is used to finely filter the methanol fuel.

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