A marine methanol usage online monitoring device
By installing a filter pipe and filter screen at the inlet of the turbine flow meter, the problem of impurities in methanol fuel wearing down turbine blades was solved, thus achieving accuracy in methanol flow monitoring and stability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN JIAOSHENG INTELLIGENT TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-05-26
AI Technical Summary
Existing methanol fuel may contain impurities such as solid particles, rust, and fibers, which can easily wear down the turbine blades and bearings of turbine flow meters, affecting measurement accuracy and even causing equipment damage.
A filter tube and a filter screen are installed at the inlet of the turbine flow meter. The filter screen is fixed by a limiting groove and a limiting column. The filter screen intercepts large particles of impurities, and the impurities are periodically removed by a drain pipe and a ball valve to prevent them from entering the turbine flow meter.
It effectively prevents large particles of impurities from entering the turbine flow meter, protects the equipment, ensures measurement accuracy, avoids clogging, and ensures the stability and accuracy of methanol flow monitoring.
Smart Images
Figure CN224286039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine equipment technology, specifically to an online monitoring device for marine methanol consumption. Background Technology
[0002] With the trend of green transformation in marine propulsion systems, methanol, with its advantages of low carbon emissions and relatively controllable fuel costs, is gradually becoming an important alternative fuel for ships. However, methanol is volatile, flammable, and explosive, and has stringent requirements for storage and transportation. Its safe and efficient use on ships relies on accurate usage monitoring. The emergence of online methanol usage monitoring devices for ships is precisely to monitor methanol fuel consumption dynamics in real time. This is not only fundamental to ensuring a stable fuel supply during navigation and avoiding navigational interruptions due to insufficient fuel, but also crucial for optimizing route planning and reducing operating costs through accurate metering data. Simultaneously, accurate flow monitoring data provides important evidence for ships to meet the International Maritime Organization's requirements for pollutant emission accounting, and is a necessary means to achieve environmentally compliant operation.
[0003] In these monitoring devices, turbine flow meters play a central role. Their installation locations are typically chosen at key nodes in the ship's methanol fuel delivery pipeline, specifically on straight pipe sections near the output end of the methanol storage tank or the fuel inlet end of the methanol engine. Choosing straight pipe sections for installation avoids fluid disturbances caused by pipe bends, valves, and other components, ensuring a stable flow of methanol through the flow meter and thus guaranteeing measurement accuracy.
[0004] Existing methanol fuel may contain impurities such as solid particles, rust, and fibers. Rotating components of turbine flow meters, such as turbine shafts and bearings, are easily affected by impurities in methanol. If large particles of impurities in methanol enter the turbine flow meter, they may wear down the turbine blades and bearings, causing the turbine to rotate poorly, affecting measurement accuracy, or even causing the turbine to seize up and damage the equipment. Utility Model Content
[0005] The purpose of this invention is to provide an online monitoring device for marine methanol consumption to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an online monitoring device for marine methanol consumption, comprising a turbine flow meter body, a first flange mounted on the surface of the turbine flow meter body, a second flange threadedly connected to the surface of the first flange using a bolt assembly, a filter tube connected to the surface of the second flange, a third flange connected to the other side surface of the filter tube, a limiting groove formed on the inlet end surface of the third flange, a limiting post connected to the surface of the limiting groove, a rubber block engaged with the surface of the limiting post and bonded to the inner wall of the connecting lug, the connecting lug being fitted onto the surface of the limiting groove, the connecting lug being connected to the inlet end surface of the filter screen cylinder, a sealing ring bonded to the surface of the filter screen cylinder, the sealing ring abutting against the inner wall of the filter tube, a discharge port formed at the bottom of the filter screen cylinder, the discharge port abutting against the top opening end surface of the drain pipe, the top surface of the drain pipe being connected to the bottom of the filter tube, a ball valve threadedly connected to the outlet end surface of the drain pipe, and a rubber plug threadedly connected to the outlet end surface of the ball valve.
[0007] As a preferred embodiment of the online monitoring device for marine methanol consumption according to this utility model, a circular through groove is opened laterally on the surface of the connecting ear, and a spherical rubber block is bonded to its surface, and the shape and size of the rubber block are adapted to the spherical groove opened on the surface of the limiting post.
[0008] As a preferred embodiment of the online monitoring device for marine methanol consumption according to this utility model, the four sets of connecting ear rings are distributed on the surface of the open end of the filter cylinder, and their shape and size are adapted to the limiting groove.
[0009] As a preferred embodiment of the online monitoring device for marine methanol consumption according to this utility model, the surface of the filter screen cylinder has an annular groove whose shape and size are adapted to the sealing ring.
[0010] As a preferred embodiment of the online monitoring device for marine methanol consumption according to this utility model, the filter cylinder has a mesh structure, and the discharge port is a circular through groove whose shape and size are adapted to the opening end of the sewage pipe.
[0011] As a preferred embodiment of the online monitoring device for marine methanol consumption according to this utility model, the surface of the rubber plug is provided with a threaded structure, the shape and size of which are adapted to the threaded groove on the inner wall of the ball valve outlet end.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] By using a filter tube installed on one side of the inlet end of the turbine flow meter body, and a filter screen cylinder fitted inside the filter tube, large particulate impurities in methanol are intercepted, preventing them from directly entering the turbine flow meter body, causing wear, and thus affecting the methanol measurement accuracy.
[0014] In addition, large particles of impurities intercepted in the upper filter pipe can be discharged by controlling the ball valve installed at the bottom of the drain pipe, thus preventing excessive accumulation of impurities from clogging the methanol flow meter's main channel and affecting the monitoring of methanol flow. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a side view of the structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model;
[0019] Figure 4 This is an exploded structural diagram of the filter tube and filter screen cylinder of this utility model;
[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram of section A.
[0021] In the diagram: 1. Turbine flow meter body; 2. First flange; 3. Bolt assembly; 4. Second flange; 5. Filter tube; 6. Third flange; 7. Limiting groove; 8. Limiting post; 9. Connecting lug; 10. Rubber block; 11. Filter screen cylinder; 12. Sealing ring; 13. Discharge port; 14. Drain pipe; 15. Ball valve; 16. Rubber plug. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-5This utility model provides the following technical solution: an online monitoring device for marine methanol consumption, comprising a turbine flow meter body 1, a first flange 2 mounted on the surface of the turbine flow meter body 1, a second flange 4 threadedly connected to the surface of the first flange 2 using a bolt assembly 3, a filter pipe 5 connected to the surface of the second flange 4, a third flange 6 connected to the other side of the filter pipe 5, a limiting groove 7 formed on the inlet end surface of the third flange 6, a limiting post 8 connected to the surface of the limiting groove 7, a rubber block 10 engaged with the surface of the limiting post 8 and adhered to the inner wall of a connecting ear 9, the surface of the connecting ear 9 fitted into the surface of the limiting groove 7, the surface of the connecting ear 9 connected to the inlet end surface of a filter screen cylinder 11, and the surface of the filter screen cylinder 11 adhered to... A sealing ring 12 is connected, and the surface of the sealing ring 12 abuts against the inner wall of the filter tube 5. A discharge port 13 is opened at the bottom of the filter screen cylinder 11, and the surface of the discharge port 13 abuts against the top opening end surface of the sewage pipe 14. The top surface of the sewage pipe 14 is connected to the bottom of the filter tube 5. A ball valve 15 is threadedly connected to the outlet end surface of the sewage pipe 14, and a rubber plug 16 is threadedly connected to the outlet end surface of the ball valve 15. In this design scheme, the turbine flow meter body 1 and the first flange 2 constitute the turbine flow meter body, and a large number of related components are set in the turbine flow meter body. Since they are existing technologies and the core content of this technical solution is irrelevant to them, they will not be described in detail in this technical solution.
[0024] The main model of the flow meter in this solution is the LWGY series.
[0025] In use: When methanol fuel flows through the turbine flowmeter body 1 at a certain flow rate, it impacts the blades of the internal turbine, thereby driving the turbine to rotate. Within a certain flow range, the turbine speed is strictly proportional to the methanol flow rate. As the turbine rotates, the magnet on its shaft rotates synchronously, causing the nearby induction coil to generate periodic magnetic flux changes, which in turn generate induced electromotive force pulse signals. After this pulse signal is processed by the converter, combined with the instrument coefficient of the turbine flowmeter body 1 (i.e., the number of pulses corresponding to the flow rate per unit volume), the instantaneous flow rate and cumulative flow rate of methanol can be accurately calculated. This provides accurate basic data for online monitoring of marine methanol consumption, enabling real-time control of methanol consumption.
[0026] In terms of data connection and transmission, the signals processed by the converter are output in the form of 4-20mA analog signals or pulse signals. These signals can be directly connected to the ship's PLC (Programmable Logic Controller), display instruments, and other equipment via wired cables to achieve real-time local data acquisition and display; they can also be connected to wireless transmission modules such as LoRa and NB-IoT for wireless data transmission. Finally, this flow data will be aggregated through the ship's Ethernet or uploaded to a host computer or cloud platform via satellite communication, 4G / 5G, or other networks. This not only meets the needs of the crew to view methanol usage data locally on board, but also supports management personnel to remotely monitor shipboard methanol usage in real time and trace historical data.
[0027] Preferably, a circular through groove is opened laterally on the surface of the connecting ear 9, and a spherical rubber block 10 is bonded to its surface, and the shape and size of the rubber block 10 are adapted to the spherical groove opened on the surface of the limiting post 8.
[0028] In practical use, the spherical rubber block 10, which is bonded to the circular through groove on the surface of the connecting ear 9, is engaged and fixed to the limiting post 8, thereby fixing the position of the filter screen cylinder 11 inside the filter tube 5. This makes it convenient to disassemble and replace it during subsequent maintenance. At the same time, during installation, the discharge port 13 at the bottom of the filter screen cylinder 11 abuts against the opening at the top of the sewage pipe 14 to ensure precise connection.
[0029] Preferably, four sets of connecting ears 9 are distributed in a ring on the surface of the open end of the filter cylinder 11, and their shape and size are adapted to the limiting groove 7.
[0030] In practical use, the connecting lug 9 is engaged and fixed by the limiting groove 7 and limiting post 8 opened on the surface of the third flange 6, thereby fixing the position of the filter screen cylinder 11 inserted into the filter tube 5.
[0031] Preferably, an annular groove is formed on the surface of the filter cylinder 11, the shape and size of which are adapted to the sealing ring 12.
[0032] In practical use, the annular groove on the surface of the filter cylinder 11 facilitates the fixing of the sealing ring 12, thereby using the sealing ring 12 to abut against the filter cylinder 11 and the filter tube 5 to prevent impurities from entering the turbine flow meter body 1 through the gap.
[0033] Preferably, the filter cylinder 11 has a mesh structure, and the discharge port 13 is a circular through groove, the shape and size of which are adapted to the opening end of the sewage pipe 14.
[0034] In practical use, the shape and size of the discharge port 13 at the bottom of the filter cylinder 11 are perfectly matched with the opening at the top of the drain pipe 14, so that the impurities intercepted in the filter cylinder 11 can be discharged through the discharge port 13 and controlled by the ball valve 15 below.
[0035] Preferably, the surface of the rubber stopper 16 is provided with a threaded structure, the shape and size of which are adapted to the threaded groove on the inner wall of the outlet end of the ball valve 15.
[0036] In practical use, the threaded structure on the surface of the rubber plug 16 makes it easy to fix its position at the outlet end of the ball valve 15, and to block its outlet end when the ball valve 15 is not in use, so as to prevent foreign objects from entering.
[0037] Working principle: When monitoring the methanol consumption of a ship using the turbine flow meter body 1, the first flange 2 and bolt assembly 3 on the inlet side of the turbine flow meter body 1 are connected to the second flange 4, and a methanol-resistant gasket is connected between them to prevent methanol leakage. At this time, the filter tube 5 connected between the second flange 4 and the third flange 6 is locked and fixed by the limiting groove 7 and limiting post 8 on the surface of the third flange 6, which engages and fixes the rubber block 10 on the inner wall of the connecting lug 9, thereby fixing the position of the filter screen cylinder 11 inserted into the filter tube 5. The filter screen cylinder 11 is used to intercept and filter larger particulate impurities carried in the methanol flowing through the filter tube 5. The nominal diameter of the filter tube 5 needs to be consistent with the... The turbine flow meter body 1 and the pipes before and after it have the same diameter to avoid excessive fluid turbulence and pressure loss due to sudden changes in pipe diameter. The surface is treated with anti-corrosion, such as spraying a salt spray resistant coating. The filter screen 11 is made of a high-strength material that is resistant to methanol corrosion, such as 316 stainless steel, to prevent the filter screen 11 from being dissolved by methanol or deformed by fluid impact. Its pore size is set to ≤50μm, which can intercept most particulate impurities. After the filter screen 11 is installed, the other side of the third flange 6 is connected to the conveying pipeline using a flange. In addition, a methanol-resistant gasket is added between the two during installation to ensure sealing, thereby intercepting and filtering large particulate impurities that enter the turbine flow meter body 1 through the second flange 4.
[0038] At this time, the rubber plug 16 threaded onto the ball valve 15 needs to be unscrewed periodically, and the bottom should be connected to a waste pipe or a container placed at the bottom. Then, the control valve for transmitting methanol should be closed, and the ball valve 15 should be opened again. The methanol remaining in the filter tube 5 will form a flow velocity due to its own pressure. When it flows through the filter screen cylinder 11, it will backwash the intercepted impurities. The impurities, along with the methanol, enter the drain pipe 14 through the discharge port 13 at the bottom of the filter screen cylinder 11 and enter the waste pipe or waste container connected at the bottom through the ball valve 15 to complete the discharge of waste. If the impurities are tightly adhered, the ball valve 15 can be closed briefly to allow a small amount of methanol to accumulate in the filter tube 5 again. Then, the ball valve 15 can be opened quickly to use the instantaneous pressure to impact the impurities, enhance the discharge effect, and reduce the frequency of disassembling the bolt assembly 3 on both sides of the filter tube 5. In actual use, the ball valve 15 is made of methanol-resistant material (such as 316 stainless steel for the valve body and PTFE or perfluoroether rubber for the sealing gasket).
[0039] This is the characteristic of the online monitoring device for marine methanol consumption. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.
[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An on-line monitoring device for methanol dosage for marine use, characterized in that, The device includes a turbine flow meter body (1), characterized in that: a first flange (2) is mounted on the surface of the turbine flow meter body (1), a second flange (4) is threadedly connected to the surface of the first flange (2) using a bolt assembly (3), a filter tube (5) is connected to the surface of the second flange (4), a third flange (6) is connected to the other side surface of the filter tube (5), a limiting groove (7) is opened on the inlet end surface of the third flange (6), a limiting post (8) is connected to the surface of the limiting groove (7), a rubber block (10) is engaged with the surface of the limiting post (8) and bonded to the inner wall of the connecting ear (9), and the surface of the connecting ear (9) is fitted with the inner wall of the connecting ear (9). The surface of the limiting groove (7) is connected to the surface of the inlet end of the filter screen cylinder (11). The surface of the filter screen cylinder (11) is bonded with a sealing ring (12). The surface of the sealing ring (12) abuts against the inner wall of the filter tube (5). The bottom of the filter screen cylinder (11) has a discharge port (13). The surface of the discharge port (13) abuts against the top opening end of the sewage pipe (14). The top surface of the sewage pipe (14) is connected to the bottom of the filter tube (5). The outlet end of the sewage pipe (14) is threadedly connected to a ball valve (15). The outlet end of the ball valve (15) is threadedly connected to a rubber plug (16).
2. The online monitoring device for marine methanol consumption according to claim 1, characterized in that: The connecting ear (9) has a horizontal circular groove on its surface, and a spherical rubber block (10) is bonded to its surface. The shape and size of the rubber block (10) are adapted to the spherical groove on the surface of the limiting post (8).
3. The online monitoring device for marine methanol consumption according to claim 2, characterized in that: The four sets of connecting ears (9) are distributed in a ring on the surface of the opening end of the filter cylinder (11), and their shape and size are adapted to the limiting groove (7).
4. The online monitoring device for marine methanol consumption according to claim 1, characterized in that: The filter cylinder (11) has an annular groove on its surface, the shape and size of which are adapted to the sealing ring (12).
5. The online monitoring device for marine methanol consumption according to claim 4, characterized in that: The filter cylinder (11) has a mesh structure, and the discharge port (13) is a circular through groove whose shape and size are adapted to the opening end of the sewage pipe (14).
6. The online monitoring device for marine methanol consumption according to claim 1, characterized in that: The surface of the rubber plug (16) is provided with a threaded structure, the shape and size of which are adapted to the threaded groove on the inner wall of the outlet end of the ball valve (15).