Marine diesel engine speed regulation control circuit

Abstract

The utility model discloses a marine diesel engine speed regulation control circuit, and belongs to the technical field of diesel engine speed regulation. Comprising a power supply unit, the output end of the power supply unit is connected with the input end of a regulation and control unit through a circuit breaker QF1, the regulation and control unit at least comprises a 1 # electric potentiometer and a 2 # electric potentiometer, the 1 # electric potentiometer and the 2 # electric potentiometer are connected with a power distribution board, and under the cooperation of the 1 # electric potentiometer, the 2 # electric potentiometer and the power distribution board, the power supply unit is connected with the power distribution board. The rotating speed of the diesel engine is adjusted. When the 1 # electric potentiometer and the 2 # electric potentiometer rotate, the rotating speed of the diesel engine is within + / -10% of the rated rotating speed, faster dynamic response can be provided, the situation that the load change is large is facilitated, and the fuel economy under different working conditions is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engine speed regulation, and in particular relates to a marine diesel engine speed regulation control circuit. Background Art

[0002] The speed regulation of diesel engines is mainly achieved through the speed governor. The speed governor can automatically adjust the fuel supply according to the changes in the diesel engine load to maintain the diesel engine running stably within the specified speed range.

[0003] When the existing diesel engine is speed-regulated, its speed is within ±5% of the rated speed. When a quick response to load changes is required, the diesel engine power response is slow and the fuel economy is not high. Utility Model Content

[0004] The purpose of the utility model is to provide a marine diesel engine speed control circuit to solve the above problems existing in the prior art.

[0005] Technical solution: A marine diesel engine speed control circuit includes a power supply unit, the output end of the power supply unit is connected to the input end of the control unit through a circuit breaker QF1, the control unit includes at least a 1# electric potentiometer and a 2# electric potentiometer, the 1# electric potentiometer and the 2# electric potentiometer are connected to a distribution board, and the speed of the diesel engine is regulated by the cooperation of the 1# electric potentiometer, the 2# electric potentiometer and the distribution board.

[0006] Preferably, the control unit includes an intermediate relay KA1, an intermediate relay KA2, an intermediate relay KA3, an intermediate relay KA4, an intermediate relay KA5, an intermediate relay KA6, a limit switch SQ1, a limit switch SQ2, a limit switch SQ3 and a limit switch SQ4, the limit switch SQ1 is connected in series with the intermediate relay KA3, the limit switch SQ2 is connected in series with the intermediate relay KA4, the limit switch SQ3 is connected in series with the intermediate relay KA5, the limit switch SQ4 is connected in series with the intermediate relay KA6, the intermediate relay KA3 is connected to the negative pole of the power supply unit through the circuit breaker QF1, the limit switch SQ1 is connected in parallel with the limit switch SQ2, the limit switch SQ3 and the limit switch SQ4, the intermediate relay KA3 is connected in parallel with the intermediate relay KA4, the intermediate relay KA5 and the intermediate relay KA6, the 1# electric potentiometer and the 2# electric potentiometer are connected to the speed increase end and the speed decrease end of the distribution board through the intermediate relay and the normally open and normally closed contacts.

[0007] Preferably, one end of the normally closed contact of the intermediate relay KA1 is connected to the intermediate relay KA2, and the other end is simultaneously connected to the normally closed contact of the intermediate relay KA2, the normally open contact of the intermediate relay KA1 and the normally open contact of the intermediate relay KA2, the normally closed contact of the intermediate relay KA2 is connected to the intermediate relay KA1, one end of the normally closed contact of the intermediate relay KA3 is connected to the normally open contact of the intermediate relay KA1, and the other end is connected to the positive electrode of the 1# electric potentiometer, the neutral point of the 2# electric potentiometer is simultaneously connected to the normally open contacts of the intermediate relay KA1 and the intermediate relay KA2, and the normally closed contact of the intermediate relay KA2 is simultaneously connected to the normally open contact of the intermediate relay KA1 and the intermediate relay KA2. The normally closed contact of intermediate relay KA4 is connected to the normally open contact of intermediate relay KA2, and the other end is connected to the negative pole of 1# electric potentiometer. One end of the normally open contact of intermediate relay KA3 is connected to the normally open contact of intermediate relay KA1, and the other end is connected to the positive pole of 2# electric potentiometer through the normally closed contact of intermediate relay KA5. The neutral point of 2# electric potentiometer is connected to the normally open contacts of intermediate relay KA1 and intermediate relay KA2 at the same time. One end of the normally open contact of intermediate relay KA4 is connected to the normally open contact of intermediate relay KA2, and the other end is connected to the negative pole of 2# electric potentiometer through the normally closed contact of intermediate relay KA6.

[0008] Preferably, the intermediate relay KA1 and the intermediate relay KA2 are both intermediate relays of model HH64P DC24V, and the intermediate relay KA3, the intermediate relay KA4, the intermediate relay KA5 and the intermediate relay KA6 are all intermediate relays of model HH62P DC24V.

[0009] Preferably, the 1# electric potentiometer and the 2# electric potentiometer are of the same model, both of which are ECR1000-5K electric potentiometers.

[0010] Preferably, the circuit breaker QF1 is a circuit breaker of model C65N 2P 10A.

[0011] Beneficial effect: The utility model relates to a marine diesel engine speed control circuit. When the diesel engine speed governor receives a speed increase signal, the coil of the intermediate relay KA1 is energized, the normally open contact of the intermediate relay KA1 is closed, and the 1# electric potentiometer starts to rotate forward. When the high limit of the 1# electric potentiometer is reached, the limit switch SQ1 is closed, the coil of the intermediate relay KA3 is energized, the normally closed contact of the intermediate relay KA3 is disconnected, the 1# electric potentiometer stops rotating, the normally open contact of the intermediate relay KA3 is closed, and the 2# electric potentiometer starts to rotate forward. When the 2# electric potentiometer reaches the high limit, the limit switch SQ3 is closed, the coil of the intermediate relay KA5 is energized and closed, the normally closed contact of the intermediate relay KA5 is disconnected, and the 2# electric potentiometer stops rotating. When the 1# electric potentiometer and the 2# electric potentiometer are rotating, the speed of the diesel engine is within ±10% of the rated speed, which can provide a faster power response, help to deal with large load changes, and improve fuel economy under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a system block diagram of the utility model;

[0013] Figure 2 A circuit diagram of the utility model;

[0014] Figure 3 This is the circuit diagram of the connection port of the utility model. DETAILED DESCRIPTION

[0015] like Figures 1 to 3 As shown, the utility model provides a technical solution: a marine diesel engine speed control circuit, including a power supply unit, the output end of the power supply unit is connected to the input end of the control unit through a circuit breaker QF1, the control unit at least includes a 1# electric potentiometer and a 2# electric potentiometer, the 1# electric potentiometer and the 2# electric potentiometer are connected to a distribution board, and the speed of the diesel engine is regulated by the cooperation of the 1# electric potentiometer and the 2# electric potentiometer and the distribution board. When the 1# electric potentiometer and the 2# electric potentiometer are rotated, the speed of the diesel engine is within ±10% of the rated speed, which can provide a faster power response, help to face the situation of large load changes, and improve the fuel economy under different working conditions, wherein the 1# electric potentiometer and the 2# electric potentiometer use the same model of electric potentiometers, and their models are both ECR1000-5K model electric potentiometers.

[0016] In a further embodiment, Figure 2As shown, the control unit includes an intermediate relay KA1, an intermediate relay KA2, an intermediate relay KA3, an intermediate relay KA4, an intermediate relay KA5, an intermediate relay KA6, a limit switch SQ1, a limit switch SQ2, a limit switch SQ3 and a limit switch SQ4, wherein the intermediate relay KA1 and the intermediate relay KA2 are both intermediate relays of model HH64P DC24V, the intermediate relay KA3, the intermediate relay KA4, the intermediate relay KA5 and the intermediate relay KA6 are both intermediate relays of model HH62P DC24V, the limit switches SQ1-SQ4 are internal switches of the 1# electric potentiometer or the 2# electric potentiometer, the limit switch SQ1 is connected in series with the intermediate relay KA3, the limit switch SQ2 is connected in series with the intermediate relay KA4, the limit switch SQ3 is connected in series with the intermediate relay KA5, the limit switch SQ4 is connected in series with the intermediate relay KA6, the intermediate relay KA3 is connected to the negative pole of the power supply unit through the circuit breaker QF1, wherein the circuit breaker QF1 is of model C65N 2P 10A circuit breaker, limit switch SQ1 is connected in parallel with limit switch SQ2, limit switch SQ3, and limit switch SQ4, intermediate relay KA3 is connected in parallel with intermediate relay KA4, intermediate relay KA5, and intermediate relay KA6, 1# electric potentiometer and 2# electric potentiometer are connected to the speed-up end and speed-down end of the distribution board through intermediate relays and normally open and normally closed contacts, one end of the normally closed contact of the intermediate relay KA1 is connected to the intermediate relay KA2, and the other end is simultaneously connected to the normally closed contact of the intermediate relay KA2, the normally open contact of the intermediate relay KA1, and the normally open contact of the intermediate relay KA2, the normally closed contact of the intermediate relay KA2 is connected to the intermediate relay KA1, one end of the normally closed contact of the intermediate relay KA3 is connected to the normally open contact of the intermediate relay KA1, and the other end is connected to the normally closed contact of the intermediate relay KA2, the normally open contact of the intermediate relay KA1, and the normally open contact of the intermediate relay KA2. The first end is connected to the positive pole of the 1# electric potentiometer, the neutral point of the 2# electric potentiometer is connected to the normally open contacts of the intermediate relay KA1 and the intermediate relay KA2 at the same time, the normally closed contact of the intermediate relay KA4 is connected to the normally open contact of the intermediate relay KA2, and the other end is connected to the negative pole of the 1# electric potentiometer, one end of the normally open contact of the intermediate relay KA3 is connected to the normally open contact of the intermediate relay KA1, and the other end is connected to the positive pole of the 2# electric potentiometer through the normally closed contact of the intermediate relay KA5, the neutral point of the 2# electric potentiometer is connected to the normally open contacts of the intermediate relay KA1 and the intermediate relay KA2 at the same time, one end of the normally open contact of the intermediate relay KA4 is connected to the normally open contact of the intermediate relay KA2, and the other end is connected to the negative pole of the 2# electric potentiometer through the normally closed contact of the intermediate relay KA6.

[0017] Through the above technical solution, the utility model can achieve the following working process:

[0018] When the diesel engine speed governor receives the speed increase signal, the coil of the intermediate relay KA1 is energized, the normally open contact of the intermediate relay KA1 is closed, and the 1# electric potentiometer starts to rotate forward. When the high limit of the 1# electric potentiometer is reached, the limit switch SQ1 is closed, the coil of the intermediate relay KA3 is energized, the normally closed contact of the intermediate relay KA3 is disconnected, the 1# electric potentiometer stops rotating, the normally open contact of the intermediate relay KA3 is closed, and the 2# electric potentiometer starts to rotate forward. When the 2# electric potentiometer reaches the high limit, the limit switch SQ3 is closed, the coil of the intermediate relay KA5 is energized and closed, the normally closed contact of the intermediate relay KA5 is disconnected, and the 2# electric potentiometer stops rotating.

[0019] When the diesel engine speed governor receives the speed reduction adjustment signal, the coil of the intermediate relay KA1 loses power, the normally open contact of the intermediate relay KA1 is disconnected, the coil of the intermediate relay KA2 is energized, the normally open contact of the intermediate relay KA2 is closed, and the 1# electric potentiometer starts to reverse. When the high limit of the 1# electric potentiometer is reached, the limit switch SQ2 is closed, the coil of the intermediate relay KA4 is energized, the normally closed contact of the intermediate relay KA4 is disconnected, the 1# electric potentiometer stops rotating, the normally open contact of the intermediate relay KA4 is closed, and the 2# electric potentiometer starts to reverse. When the 2# electric potentiometer reaches the high limit, the limit switch SQ4 is closed, the coil of the intermediate relay KA6 is energized and closed, the normally closed contact of the intermediate relay KA6 is disconnected, and the 2# electric potentiometer stops rotating.

[0020] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A marine diesel engine speed control circuit, characterized in that: It includes a power supply unit, the output end of which is connected to the input end of the control unit through a circuit breaker QF1, and the control unit at least includes a 1# electric potentiometer and a 2# electric potentiometer, which are connected to a distribution board, and the speed of the diesel engine is regulated by the cooperation of the 1# electric potentiometer, the 2# electric potentiometer and the distribution board; Wherein, the control unit includes an intermediate relay KA1, an intermediate relay KA2, an intermediate relay KA3, an intermediate relay KA4, an intermediate relay KA5, an intermediate relay KA6, a limit switch SQ1, a limit switch SQ2, a limit switch SQ3 and a limit switch SQ4, wherein the limit switch SQ1 is connected in series with the intermediate relay KA3, the limit switch SQ2 is connected in series with the intermediate relay KA4, the limit switch SQ3 is connected in series with the intermediate relay KA5, the limit switch SQ4 is connected in series with the intermediate relay KA6, the intermediate relay KA3 is connected to the negative pole of the power supply unit through the circuit breaker QF1, the limit switch SQ1 is connected in parallel with the limit switch SQ2, the limit switch SQ3 and the limit switch SQ4, the intermediate relay KA3 is connected in parallel with the intermediate relay KA4, the intermediate relay KA5 and the intermediate relay KA6, the 1# electric potentiometer and the 2# electric potentiometer are connected to the speed-up end and the speed-down end of the distribution board through the intermediate relay and the normally open and normally closed contacts, and one end of the normally closed contact of the intermediate relay KA1 is connected to the intermediate relay KA2 , and the other end is simultaneously connected to the normally closed contact of the intermediate relay KA2, the normally open contact of the intermediate relay KA1 and the normally open contact of the intermediate relay KA2. The normally closed contact of the intermediate relay KA2 is connected to the intermediate relay KA1. One end of the normally closed contact of the intermediate relay KA3 is connected to the normally open contact of the intermediate relay KA1, and the other end is connected to the positive electrode of the 1# electric potentiometer. The neutral point of the 2# electric potentiometer is simultaneously connected to the normally open contacts of the intermediate relay KA1 and the intermediate relay KA2. The normally closed contact of the intermediate relay KA4 is connected to the normally open contact of the intermediate relay KA2, and the other end is connected to the negative electrode of the 1# electric potentiometer. One end of the normally open contact of the intermediate relay KA3 is connected to the normally open contact of the intermediate relay KA1, and the other end is connected to the positive electrode of the 2# electric potentiometer through the normally closed contact of the intermediate relay KA5. One end of the normally open contact of the intermediate relay KA4 is connected to the normally open contact of the intermediate relay KA2, and the other end is connected to the negative electrode of the 2# electric potentiometer through the normally closed contact of the intermediate relay KA6.

2. A marine diesel engine speed control circuit according to claim 1, characterized in that: The intermediate relay KA1 and the intermediate relay KA2 are both intermediate relays of model HH64P DC24V, and the intermediate relay KA3, the intermediate relay KA4, the intermediate relay KA5 and the intermediate relay KA6 are all intermediate relays of model HH62P DC24V.

3. A marine diesel engine speed control circuit according to claim 1, characterized in that: The 1# electric potentiometer and the 2# electric potentiometer are electric potentiometers of the same model, and their models are both electric potentiometers of the ECR1000-5K model.

4. A marine diesel engine speed control circuit according to claim 1, characterized in that: The circuit breaker QF1 is a C65N 2P 10A circuit breaker.

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