Door cover assembly for measuring temperature of splashing oil of nuclear power diesel engine

Abstract

The invention relates to the technical field of land diesel engines, and discloses a door cover assembly for measuring the temperature of splashing oil of a nuclear power diesel engine, the door cover assembly comprises a temperature measuring door cover and an arranged through hole, and a temperature measuring sensor is additionally arranged in the center of the front end of the top of the temperature measuring door cover; the drainage baffle is arranged under the bottom of the temperature measuring door cover and is connected with the corresponding position of the bottom of the temperature measuring door cover; and the oil collecting tank is arranged right below the bottom of the drainage baffle plate, is connected with the corresponding part of the bottom of the temperature measuring door cover, and is connected with the temperature measuring sensor. According to the door cover assembly for measuring the temperature of the splashing oil of the nuclear power diesel engine, oil in the oil return pipe and the splashing oil are effectively blocked through the drainage baffle, and the correct temperature of the splashing oil can be effectively monitored in real time through the temperature measuring sensor when the nuclear power diesel engine runs at a high speed. By adopting the mode, the shutdown of the nuclear power diesel engine caused by wrong temperature deviation alarm can be avoided.

Description

Technical Field

[0001] This invention relates to the field of land-based diesel engine technology, specifically to a door cover assembly for measuring the temperature of splashed oil in nuclear power diesel engines. Background Technology

[0002] A four-stroke nuclear power diesel engine's working cycle generally includes four processes: intake, compression, expansion, power stroke, and exhaust. Each working cycle relies primarily on the reciprocating motion of the crankshaft, connecting rods, and pistons within the crankcase to convert the internal energy of the fuel into mechanical energy and output power. When the crankshaft rotates at high speed, the crankpins throw out lubricating oil through centrifugal force, a phenomenon known as "splash oil." The temperature of this splash oil reflects the working condition of the crankpins and the large-end bearings of the connecting rods. An abnormally high oil temperature generally indicates potential abnormal wear within the crankpins, requiring timely inspection to prevent serious consequences. Therefore, for nuclear power diesel engines, the crankpin splash oil temperature is a crucial operating parameter.

[0003] Nuclear power diesel engines, as crucial operating equipment within nuclear power plants, must operate stably and reliably and provide backup power during plant power outages. However, existing door cover assemblies for splash oil temperature measurement fail to prevent the return oil in the return pipe from continuously scouring the oil collection tank. This results in the sensor measuring a lower temperature than the actual splash oil temperature, triggering a splash oil temperature deviation alarm. While on-site temperature compensation for the error channel is performed by comparing the average splash oil temperature with other cylinders, the fixed compensation value cannot automatically correct for changes in diesel engine operating conditions and seasonal temperature variations. After more than a year of actual operation, splash oil temperature deviation alarms still occur in certain cylinders. This problem seriously affects the normal operation of the diesel engine and poses a potential risk to the nuclear power plant. Secondly, since the return oil pipe connected to the door cover is part of the diesel engine equipment, to minimize the impact on the nuclear power diesel engine itself, it is proposed to guide the return oil flow inside the door cover to prevent the return oil inside the door cover from directly scouring the oil collection tank. Therefore, a new door cover assembly for splash oil temperature measurement in nuclear power diesel engines is proposed. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a door cover assembly for measuring the temperature of splashed oil in nuclear power diesel engines, thereby solving the technical problems of the aforementioned splashed oil temperature deviation alarm and the direct flushing of the oil collection tank by the return oil inside the door cover.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a door cover assembly for measuring the temperature of splash oil in a nuclear power diesel engine, comprising:

[0008] Temperature measuring door cover, and a through hole set on the top of the temperature measuring door cover, and a temperature measuring sensor is added to the center of the front end of the top of the temperature measuring door cover;

[0009] A flow-draining baffle is located directly below the bottom of the temperature measuring door cover and is connected to the corresponding part of the bottom of the temperature measuring door cover;

[0010] An oil collection trough is located directly below the bottom of the flow-inducing baffle and is connected to the corresponding bottom of the temperature measuring door cover. The oil collection trough is also connected to the temperature sensor. The door cover assembly for splash oil temperature measurement effectively isolates the oil in the return oil pipe from the splash oil using the flow-inducing baffle. This allows for real-time monitoring of the correct splash oil temperature by the temperature sensor during high-speed operation of the nuclear power diesel engine. This method, on the one hand, avoids engine shutdowns caused by erroneous temperature deviation alarms in nuclear power diesel engines, significantly improving the accuracy of splash oil temperature measurement and the continuous stability of nuclear power diesel engine operation; on the other hand, it effectively reduces the impact of single-cylinder temperature inaccuracies in splash oil temperature measurement on the overall average temperature deviation, avoiding the impact of false splash oil temperature deviation alarms on the stable and safe operation of nuclear power diesel engines, and improving the accuracy of splash oil temperature measurement in nuclear power diesel engines.

[0011] Preferably, a limiting post is longitudinally inserted at the corresponding position between the temperature measuring door cover and the oil collection tank, and a rotating head is added at the top center of the limiting post. The limiting post connects the temperature measuring door cover and the oil collection tank, and the rotating head rotates at the top of the limiting post.

[0012] Preferably, the inner cavity of each limiting post is longitudinally rotatably connected to a rotating shaft, which is connected to the bottom of the rotating head. The rotating head at the top of the limiting post can drive the rotating shaft to rotate and adjust the direction of rotation of the rotating shaft.

[0013] Preferably, a rotating block is coaxially connected to the bottom of the rotating shaft, and the rotating block is located at the bottom center of the limiting post, with a side arc plate installed at a corresponding position on the surface of the rotating block. The rotating shaft drives the rotating block to rotate, and the side arc plate rotates in the same direction as the rotating block.

[0014] Preferably, the bottom centers of both sides of the limiting post are rotatably connected to limiting side plates, which are in contact with the corresponding side arc plates. An arc-shaped spring is connected to the center of one side of each limiting side plate, and the arc-shaped spring is connected to the corresponding point on the bottom of the limiting post. Under the action of the arc-shaped spring, the protruding end of the limiting side plate is in contact with the corresponding point of the oil collection groove. When the side arc plate rotates, it can drive the limiting side plate to rotate to one side, compressing the arc-shaped spring. Compared to the bolted connection method used in transmission, this structure is easier to disassemble and assemble, and is less prone to separation due to vibration.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a door cover assembly for measuring the temperature of splashed oil in nuclear power diesel engines, which has the following advantages:

[0017] The door cover assembly for splash oil temperature measurement in this nuclear power diesel engine effectively isolates the oil in the return oil pipe from the splash oil using a baffle plate. This allows for real-time monitoring of the accurate splash oil temperature via a temperature sensor even during high-speed operation of the nuclear power diesel engine. This approach, on the one hand, avoids engine shutdowns caused by erroneous temperature deviation alarms, significantly improving the accuracy of splash oil temperature measurement and the continuous stability of the nuclear power diesel engine's operation. On the other hand, it effectively reduces the impact of single-cylinder temperature inaccuracies in splash oil temperature measurement on the overall average temperature deviation, preventing false alarms from affecting the stable and safe operation of the nuclear power diesel engine, and further improving the accuracy of splash oil temperature measurement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall bottom structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the flow-diverting baffle and oil collection tank structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the limiting post and its connection structure of the present invention;

[0022] Figure 5 This is a cross-sectional view of the rotating structure of the limiting column of the present invention.

[0023] In the diagram: 1. Temperature measuring door cover; 2. Drainage baffle; 3. Oil collection tank; 4. Temperature sensor; 5. Limiting post; 6. Rotating head; 7. Rotating shaft; 8. Rotating block; 9. Side arc plate; 10. Limiting side plate; 11. Arc spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a technical solution: a door cover assembly for measuring the temperature of splash oil in a nuclear power diesel engine, comprising: (See attached diagram) Figure 1 Temperature measuring door cover, and a through hole set on the top of the temperature measuring door cover, and a temperature sensor is added to the center of the front end of the top of the temperature measuring door cover;

[0026] Please see Figure 2 A flow-draining baffle is installed directly below the bottom of the temperature measuring door cover and is connected to the corresponding part of the bottom of the temperature measuring door cover.

[0027] An oil collection trough is located directly below the bottom of the flow-inducing baffle and is connected to the corresponding bottom of the temperature measuring door cover. The oil collection trough is also connected to the temperature sensor. The door cover assembly for splash oil temperature measurement effectively isolates the oil in the return oil pipe from the splash oil using the flow-inducing baffle. This allows for real-time monitoring of the correct splash oil temperature by the temperature sensor during high-speed operation of the nuclear power diesel engine. This method, on the one hand, avoids engine shutdowns caused by erroneous temperature deviation alarms in nuclear power diesel engines, significantly improving the accuracy of splash oil temperature measurement and the continuous stability of nuclear power diesel engine operation; on the other hand, it effectively reduces the impact of single-cylinder temperature inaccuracies in splash oil temperature measurement on the overall average temperature deviation, avoiding the impact of false splash oil temperature deviation alarms on the stable and safe operation of nuclear power diesel engines, and improving the accuracy of splash oil temperature measurement in nuclear power diesel engines.

[0028] Please see Figure 3 , Figure 4 Each of the corresponding points between the temperature measuring door cover and the oil collection tank is longitudinally inserted with a limiting post, and a rotating head is added to the top center of the limiting post. The limiting posts connect the temperature measuring door cover and the oil collection tank, and the rotating head rotates at the top of the limiting post.

[0029] Please see Figure 5 The inner cavity of each limiting post is longitudinally rotatably connected to a rotating shaft, which is connected to the bottom of a rotating head. The rotating head at the top of the limiting post can drive the rotating shaft to rotate and adjust the direction of rotation of the shaft. A rotating block is coaxially connected to the bottom of the rotating shaft, and the rotating block is located at the center of the bottom of the limiting post. A side arc plate is installed at the corresponding position on the surface of the rotating block. The rotating shaft drives the rotating block to rotate, and the side arc plate rotates in the same direction as the rotating block. Limiting side plates are rotatably connected to the center of both sides of the bottom of the limiting post and are in contact with the corresponding side arc plates. An arc spring is connected to the center of one side of each limiting side plate, and the arc spring is connected to the corresponding position on the bottom of the limiting post. Under the action of the arc spring, the convex end of the limiting side plate is in contact with the corresponding position of the oil collection groove. When the side arc plate rotates, it drives the limiting side plate to rotate to one side and compresses the arc spring. Compared with the bolt connection method of transmission, this structure is easy to disassemble and assemble and is not easily separated by vibration.

[0030] This solution utilizes a door cover assembly for splash oil temperature measurement, employing a baffle plate to effectively isolate the oil in the return oil pipe from the splash oil. This allows for real-time monitoring of the correct splash oil temperature via a temperature sensor during high-speed operation of the nuclear power diesel engine. A limiting post connects the temperature measurement door cover to the oil collection tank. A rotating head at the top of the limiting post drives a rotating shaft, and the direction of the shaft can be adjusted. The shaft drives a rotating block to rotate, and the side arc plate rotates in the same direction as the rotating block. Under the action of an arc spring, the convex end of the limiting side plate is in contact with the corresponding part of the oil collection tank. When the side arc plate rotates, it causes the limiting side plate to rotate to one side, compressing the arc spring and separating the convex end of the limiting side plate from the oil collection tank.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door cover assembly for measuring the temperature of splash oil in a nuclear power diesel engine, characterized in that, include: Temperature measuring door cover (1), and a through hole provided on the top of temperature measuring door cover (1), and a temperature sensor (4) is provided at the center of the front end of the top of temperature measuring door cover (1); A flow-draining baffle (2) is located directly below the bottom of the temperature measuring door cover (1) and is connected to the corresponding part of the bottom of the temperature measuring door cover (1); The oil collection tank (3) is located directly below the bottom of the flow guide baffle (2) and is connected to the bottom of the temperature measuring door cover (1). The oil collection tank (3) is also connected to the temperature sensor (4).

2. A door cover assembly for measuring the splash oil temperature of a nuclear power diesel engine according to claim 1, characterized in that: The corresponding positions between the temperature measuring door cover (1) and the oil collection tank (3) are each longitudinally inserted with a limiting post (5), and a rotating head (6) is added to the top center of the limiting post (5).

3. A door cover assembly for measuring the splash oil temperature of a nuclear power diesel engine according to claim 2, characterized in that: The inner cavity of each limiting post (5) is longitudinally rotatably connected to a rotating shaft (7), which is connected to the bottom of the rotating head (6).

4. A door cover assembly for measuring the splash oil temperature of a nuclear power diesel engine according to claim 3, characterized in that: The bottom of the rotating shaft (7) is coaxially connected to a rotating block (8), and the rotating block (8) is located at the bottom center of the limiting post (5), and a side arc plate (9) is installed on the corresponding position of the surface of the rotating block (8).

5. A door cover assembly for measuring the splash oil temperature of a nuclear power diesel engine according to claim 4, characterized in that: The bottom two sides of the limiting post (5) are rotatably connected to limiting side plates (10) and are in contact with the corresponding side arc plates (9). An arc spring (11) is connected to the center of one side of the limiting side plate (10), and the arc spring (11) is connected to the corresponding bottom of the limiting post (5).

Images