Cooling water temperature control system of marine main engine

Abstract

The utility model discloses a cooling water temperature control system of a marine main engine, which comprises a three-way temperature control valve, a main engine cooling water inlet pipeline, a plate cooling water inlet pipeline and a cooling water pipeline, and three valve ports of the three-way temperature control valve are respectively communicated with the water inlet pipeline, the main engine cooling water inlet pipeline and the plate cooling water inlet pipeline. One end of the cooling water pipeline is communicated with the main engine cooling water inlet pipeline, the other end of the cooling water pipeline is communicated with a cooling water outlet of the main engine cylinder sleeve cooler, a first stop valve is arranged on the plate cooling water inlet pipeline, and the first stop valve is located between a valve port of the three-way temperature control valve and a plate cooling water inlet. According to the cooling water temperature control system for the marine main engine, an inlet temperature control valve is prevented from being replaced, so that the cost is reduced, the cooling water flow can be ensured under extreme working conditions, and the cooling water temperature control requirement of the main engine is met.

Description

Technical Field

[0001] This utility model relates to the field of marine power technology, and in particular to a marine main engine cooling water temperature control system. Background Technology

[0002] To meet the requirements for the main unit's cooling water intake and to regulate the circulating temperature of the main unit's cooling water, preventing high / low temperature alarms or even shutdown, a temperature control valve must be installed in the main unit's cooling water pipeline. The main unit's cooling water temperature is measured by a temperature sensor installed on the cooling water pipeline. The measured temperature data is fed back to the temperature controller, which analyzes the temperature data and adjusts the opening of the temperature control valve to control the amount of cooling water entering the system, thereby stabilizing the cooling water temperature. According to the main unit's specifications, the temperature control valve's temperature range must meet the main unit's monitoring and alarm temperature requirements, ensuring that the cooling water temperature remains within the main unit's operating range and guaranteeing normal operation.

[0003] As a crucial component for ensuring the operating temperature of the main unit, the selection and technical parameters of the temperature control valve directly affect the cooling efficiency of the cooling water, thus impacting the normal operating conditions of the main unit. Currently, domestic temperature control valve manufacturers can meet the requirements of the main unit in terms of temperature control range and data feedback control. However, under extreme operating conditions, the inability to achieve complete sealing can lead to cooling water leakage. This results in the main unit not being able to be fully cooled by the high-temperature cooling water under high load, triggering the main unit's cooling water alarm. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a ship engine cooling water temperature control system, which avoids the need to replace imported temperature control valves and thus reduces costs, while ensuring cooling water flow under extreme operating conditions and meeting the engine cooling water temperature control requirements.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A marine main engine cooling water temperature control system includes a three-way thermostatic valve, an inlet main engine cooling water pipeline, an inlet plate cooler cooling water pipeline, and a cooling water pipeline. The three valve ports of the three-way thermostatic valve are respectively connected to the inlet water pipeline, the inlet main engine cooling water pipeline, and the inlet plate cooler cooling water pipeline. One end of the cooling water pipeline is connected to the inlet main engine cooling water pipeline, and the other end is connected to the cooling water outlet of the main engine cylinder liner cooler. A first shut-off valve is provided on the inlet plate cooler cooling water pipeline, and the first shut-off valve is located between the valve port of the three-way thermostatic valve and the plate cooler inlet.

[0007] Furthermore, a second shut-off valve is provided on the main unit cooling water pipeline, and the second shut-off valve is located between the valve port of the three-way temperature control valve and the connection point between the cooling water pipeline and the main unit cooling water pipeline.

[0008] Furthermore, the system also includes a temperature sensor and a temperature controller. The temperature sensor is located on the main unit's cooling water pipeline, and the temperature sensor is electrically connected to the temperature controller. The three-way temperature control valve is electrically connected to the temperature controller.

[0009] Furthermore, the first and second shut-off valves can be manually operated locally.

[0010] This invention relates to a marine main engine cooling water temperature control system. First, a first shut-off valve is installed on the pipeline from the temperature control valve outlet to the plate cooler inlet. This ensures that cooling water does not leak into the plate cooler and be cooled during internal circulation, preventing low-temperature cooling water from failing to rise in time due to leakage and triggering a low-temperature alarm. Second, a second shut-off valve is installed on the pipeline from the temperature control valve outlet to the main engine inlet. This allows all high-temperature cooling water under high-load conditions to enter the plate cooler, ensuring cooling efficiency and preventing high-temperature cooling water from failing to cool completely due to leakage and triggering a high-temperature alarm. This invention solves the cooling water temperature control problem caused by temperature control valve leakage, meeting main engine specifications while saving the cost of replacing the temperature control valve. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the ship's main engine cooling water temperature control system described in this utility model.

[0012] Among them, 1-three-way temperature control valve, 2-main engine cooling water inlet pipe, 3-platen cooling water inlet pipe, 4-cooling water pipe, 5-temperature sensor, 6-temperature controller, 7-water inlet pipe, 8-main engine cylinder liner cooler, 9-first shut-off valve, 10-second shut-off valve. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0014] like Figure 1As shown, a marine main engine cooling water temperature control system includes a three-way thermostatic valve 1, a main engine cooling water inlet pipe 2, a platen cooling water inlet pipe 3, a cooling water pipe 4, a temperature sensor 5, and a temperature controller 6. The three ports of the three-way thermostatic valve 1 are respectively connected to the inlet pipe 7, the main engine cooling water inlet pipe 2, and the platen cooling water inlet pipe 3. One end of the cooling water pipe 4 is connected to the main engine cooling water inlet pipe 2, and the other end is connected to the cooling water outlet of the main engine cylinder liner cooler 8. A first shut-off valve is provided on the platen cooling water inlet pipe 3. Valve 9, the first shut-off valve 9 is located between the valve port of the three-way temperature control valve 1 and the plate cooler inlet, and a second shut-off valve 10 is provided on the main unit cooling water pipeline 2. The second shut-off valve 10 is located between the valve port of the three-way temperature control valve 1 and the connection point between the cooling water pipeline 4 and the main unit cooling water pipeline 2; the first shut-off valve 9 and the second shut-off valve 10 are manually operated on-site; the temperature sensor 5 is located on the main unit cooling water pipeline, and the temperature sensor 5 is electrically connected to the temperature controller 6. The three-way temperature control valve 1 is electrically controlled by the temperature controller 6.

[0015] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine main engine cooling water temperature control system, characterized by, The three-way temperature control valve, the main engine cooling water pipeline, the plate cooling water pipeline and the cooling water pipeline are connected, the three valve ports of the three-way temperature control valve are communicated with the water inlet pipeline, the main engine cooling water pipeline and the plate cooling water pipeline respectively, one end of the cooling water pipeline is communicated with the main engine cooling water pipeline, the other end is communicated with the cooling water outlet of the main engine cylinder jacket cooler, a first stop valve is arranged on the plate cooling water pipeline, and the first stop valve is located between the three-way temperature control valve port and the plate cooling water inlet.

2. A marine engine cooling water temperature control system according to claim 1, characterised in that, A second stop valve is arranged on the main engine cooling water pipeline, and the second stop valve is located between the three-way temperature control valve port and the communication point of the cooling water pipeline and the main engine cooling water pipeline.

3. A marine engine cooling water temperature control system according to claim 2, wherein, The system further comprises a temperature sensor and a temperature controller, the temperature sensor is arranged on the main engine cooling water pipeline, the temperature sensor is electrically connected with the temperature controller, and the three-way temperature control valve is electrically connected with the temperature controller.

4. A marine engine cooling water temperature control system according to claim 3, wherein, The first stop valve and the second stop valve are manually operated on site.

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