A water resistor for load testing of a marine generator and its operation method

Abstract

The invention discloses a marine generator load test water resistor, comprising a load barrel, wherein the central axis of the load barrel is a column fixed to the barrel bottom, three upper I-beams are arranged near the top of the column, the three upper I-beams are arranged along a circle around the column and are perpendicular to the column; three lower I-beams are arranged near the bottom of the column, the lower I-beams are arranged along a circle around the column and are perpendicular to the column; the upper I-beams and the lower I-beams are arranged symmetrically, and a pole plate is connected between every two upper and lower corresponding I-beams; three water inlet solenoid valves are evenly arranged along the outer wall of the load barrel and near the bottom of the load barrel, a drain solenoid valve is arranged between every two water inlet solenoid valves, and each water inlet solenoid valve is 60 degrees away from the adjacent drain solenoid valve. The invention avoids the risk of overloading the generator due to the falling off of the pole plate of the old water resistor, improves work efficiency, increases safety, and has a simple structure and convenient maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of ship construction and design, and in particular to a water resistor for a load test of a marine generator and an operating method thereof. Background Art

[0002] The commonly used marine generator load test water resistor generally uses a wire rope or a screw to control the rise and fall of the water load plate to control the contact area between the plate and the water, so as to control the load size. However, during use, the plate often shakes and the wire rope breaks, resulting in unstable generator load or even generator overload. In order to improve safety and work efficiency, the present invention proposes a marine generator load test water resistor and an operation method thereof. Summary of the invention

[0003] The technical problem to be solved by the present invention is to propose a marine generator load test water resistor and its operation method in view of the shortcomings of the above-mentioned prior art. The cooling water effect of the rolling zone roller is significantly improved, the steel plate rolling rate is increased, and the roller life is also effectively guaranteed.

[0004] The technical solution of the present invention to solve the above technical problems is:

[0005] A marine generator load test water resistor comprises a load barrel, wherein the central axis of the load barrel is a column fixed to the barrel bottom, three upper I-beams are arranged near the top of the column, the three upper I-beams are arranged along the circumference of the column and are perpendicular to the column; three lower I-beams are arranged near the bottom of the column, the lower I-beams are arranged along the circumference of the column and are perpendicular to the column; the upper I-beams and the lower I-beams are arranged symmetrically, and a pole plate is connected between every two upper and lower corresponding I-beams; three water inlet solenoid valves are evenly arranged along the outer wall of the load barrel and near the bottom of the load barrel, a water discharge solenoid valve is arranged between every two water inlet solenoid valves, and each water inlet solenoid valve is 60 degrees away from the adjacent water discharge solenoid valve.

[0006] The technical solution further defined in the present invention is:

[0007] In the aforementioned marine generator load test water resistor, the pole plate is connected to the upper I-beam and the lower I-beam respectively through two insulating plates.

[0008] The height of the aforementioned marine generator load test water resistor, water inlet solenoid valve and water discharge solenoid valve is 100-300mm.

[0009] The aforementioned marine generator load test water resistor is formed integrally between the column, the upper I-beam and the lower I-beam.

[0010] In the aforementioned marine generator load test water resistance, the distance from the pole plate to the inner wall of the load barrel is greater than 0 and less than 15 mm.

[0011] The aforementioned operation method of the water resistance of the marine generator load test includes the following steps: the marine generator load test water resistance control circuit is a 220V AC control circuit. When the system has power, the power indicator light H1 is on. After turning on the switch SA, the water load can be controlled. When the control switch WL is turned to the 0 position, the system does not work. When it is turned to the +1 gear, KA1 is energized, the water inlet solenoid valve DF1 is energized, the indicator light H2 is on, and the water load is low in water intake; when it is turned to the +2 gear, KA1 and KA2 are energized at the same time, the water inlet solenoid valves DF1 and DF2 are energized at the same time, the indicator light H3 is on, and the water load is medium in water intake; when it is turned to the +3 gear, KA1, KA2, and KA3 are energized at the same time, the water inlet solenoid valves DF1, DF2, and DF3 are energized at the same time, the indicator light H4 is on, and the water load is high in water intake; when it is turned to the -1 gear, KA4 is energized, the drain solenoid valve DF4 is energized, and the indicator light H5 is on. The light is on, and the water load drains a low amount; when it is turned to the -2 gear, KA4 and KA5 are energized at the same time, the drainage solenoid valves DF4 and DF5 are energized at the same time, the indicator light H6 is on, and the water load drains a medium amount; when it is turned to the -3 gear, KA4, KA5, and KA6 are energized at the same time, the drainage solenoid valves DF4, DF5, and DF6 are energized at the same time, the indicator light H7 is on, and the water load drains a high amount.

[0012] The beneficial effects of the technical solution of the present invention are as follows: 1. The plate and the load bucket are fixedly connected, so there will be no shaking and uneven three-phase current of the generator. 2. The water inlet solenoid valve and the water discharge solenoid valve can control small power, and there will be no large fluctuations when the old water resistor controls the load by lifting and lowering the plate, and even the load below 10KW cannot be controlled. 3. The risk of the old water resistor plate falling off causing the generator to overload is avoided, and the safety is improved. In addition, the technical solution has a simple structure, is easy to use, and is simple to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 A top view of the present invention;

[0015] Figure 3 The electrical schematic diagram of the present invention;

[0016] Among them: 1- load bucket, 2- column, 3- upper I-beam, 4- lower I-beam, 5- plate, 6- water inlet solenoid valve, 7- drain solenoid valve, 8- insulation board. DETAILED DESCRIPTION

[0017] Example 1

[0018] The present embodiment provides a marine generator load test water resistor, comprising a load barrel 1, wherein the central axis of the load barrel 1 is a column 2 fixed to the barrel bottom, and three upper I-beams 3 are arranged near the top of the column 2, and the three upper I-beams 3 are arranged in a circle along the circumference of the column 2 and are perpendicular to the column 2; three lower I-beams 4 are arranged near the bottom of the column 2, and the lower I-beams 4 are arranged in a circle along the circumference of the column 2 and are perpendicular to the column 2; the upper I-beams 3 and the lower I-beams 4 are symmetrically arranged, and a pole plate 5 is connected between every two upper and lower corresponding I-beams; three water inlet solenoid valves 6 are evenly opened along the outer wall of the load barrel 1 and near the bottom of the load barrel 1, and a water discharge solenoid valve 7 is arranged between every two water inlet solenoid valves 6, and each water inlet solenoid valve 6 is 60 degrees away from the adjacent water discharge solenoid valve 7;

[0019] The plate 5 is connected to the upper I-beam 3 and the lower I-beam 4 respectively through two insulating plates 8; the height of the water inlet solenoid valve 6 and the drain solenoid valve 7 is 200 mm; the column 2 is integrally formed with the upper I-beam 3 and the lower I-beam 4; the distance from the plate 5 to the inner wall of the load bucket 1 is greater than 0 and less than 15 mm;

[0020] The water resistance control circuit of the marine generator load test is a 220V AC control circuit (such as Figure 3), when the system has power, the power indicator light H1 is on, and the water load can be controlled after the switch SA is turned on. When the control switch WL is turned to 0, the system does not work. When it is turned to +1, KA1 is energized, the water inlet solenoid valve DF1 is energized, the indicator light H2 is on, and the water load is low-volume water inlet; when it is turned to +2, KA1 and KA2 are energized at the same time, the water inlet solenoid valves DF1 and DF2 are energized at the same time, the indicator light H3 is on, and the water load is medium-volume water inlet; when it is turned to +3, KA1, KA2, and KA3 are energized at the same time, the water inlet solenoid valves DF1, DF2, and DF3 are energized at the same time, the indicator light H4 is on, and the water load is high-volume water inlet; when it is turned to -1, KA4 is energized, the drain solenoid valve DF4 is energized, the indicator light H5 is on, and the water load is low-volume water outlet; when it is turned to -2, KA4 and KA5 are energized at the same time, the drain solenoid valves DF4 and DF5 are energized at the same time, the indicator light H6 is on. When the light is on, the water load performs medium drainage; when it is turned to -3 gear, KA4, KA5, and KA6 are energized at the same time, and the drainage solenoid valves DF4, DF5, and DF6 are energized at the same time, the indicator light H7 is on, and the water load performs high drainage. As mentioned above, the precise control of the load is achieved by controlling the water volume of the inlet and outlet.

[0021] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A marine generator load test water resistor, comprising a load bucket (1), characterized in that: The central axis of the load barrel (1) is a column (2) fixed to the bottom of the barrel. Three upper I-beams (3) are arranged near the top of the column (2). The three upper I-beams (3) are arranged in a circle around the column (2) and are perpendicular to the column (2). Three lower I-beams (4) are arranged near the bottom of the column (2). The lower I-beams (4) are arranged in a circle around the column (2) and are perpendicular to the column (2). The upper I-beams (3) and the lower I-beams (4) are arranged symmetrically. The column (2) and the upper I-beams (3) are symmetrically arranged. The upper I-beam (3) and the lower I-beam (4) are integrally formed, and an electrode plate (5) is connected between each two upper and lower corresponding I-beams, and the electrode plate (5) is connected to the upper I-beam (3) and the lower I-beam (4) respectively through two insulating plates (8); three water inlet solenoid valves (6) are evenly arranged along the outer wall of the load barrel (1) and close to the bottom end of the load barrel (1), and a water discharge solenoid valve (7) is arranged between each two water inlet solenoid valves (6), and each water inlet solenoid valve (6) and the adjacent water discharge solenoid valve (7) form an angle of 60 degrees.

2. The marine generator load test water resistor according to claim 1, characterized in that: The height of the water inlet solenoid valve (6) and the water discharge solenoid valve (7) is 100-300 mm.

3. The marine generator load test water resistor according to claim 1, characterized in that: The distance between the electrode plate (5) and the inner wall of the load bucket (1) is greater than 0 and less than 15 mm.

4. A method for operating a water resistor for a load test of a marine generator, the method comprising the water resistor for a load test of a marine generator as claimed in any one of claims 1 to 3, characterized in that: The method comprises the following steps: the control circuit of the water resistance of the marine generator load test is a 220V AC control circuit, when the system has power, the power indicator light H1 is on, the water load can be controlled after the switch SA is turned on, the system does not work when the control switch WL is turned to the 0 position, when it is turned to the +1 gear, KA1 is energized, the water inlet solenoid valve DF1 is energized, the indicator light H2 is on, and the water load performs a low amount of water intake; when it is turned to the +2 gear, KA1 and KA2 are energized at the same time, the water inlet solenoid valves DF1 and DF2 are energized at the same time, the indicator light H3 is on, and the water load performs a medium amount of water intake; when it is turned to the +3 gear, KA1, KA2, KA3 are energized at the same time, the water inlet solenoid valves DF1, DF2, DF3 are energized at the same time, the indicator light H4 is on, and the water load performs a high amount of water intake; when it is turned to the -1 gear, KA4 is energized, the drainage solenoid valve DF4 is energized, the indicator light H5 is on, and the water load performs a low amount of water discharge; when it is turned to the -2 gear, KA1 and KA2 are energized at the same time, the water inlet solenoid valves DF1, DF2, DF3 are energized at the same time, the indicator light H5 is on, and the water load performs a low amount of water intake. When the gear is in the -3 position, KA4, KA5 and KA6 are energized at the same time, the drainage solenoid valves DF4 and DF5 are energized at the same time, the indicator light H6 is on, and the water load drains a medium amount of water; when the gear is turned to the -3 position, KA4, KA5 and KA6 are energized at the same time, the drainage solenoid valves DF4, DF5 and DF6 are energized at the same time, the indicator light H7 is on, and the water load drains a high amount of water.

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