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

Abstract

The utility model 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, which comprises a temperature measuring door cover and a 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] The utility model relates to the technical field of land-based diesel engines, in particular to a door cover component for measuring the temperature of splash oil of a nuclear power diesel engine. Background Art

[0002] The working cycle of a four-stroke nuclear diesel engine generally includes four processes: intake, compression, expansion, work and exhaust. Each working cycle mainly relies on the reciprocating motion of the crankshaft, connecting rod and piston in the crankcase to convert the internal energy of the fuel into mechanical energy and output power to the outside. When the crankshaft rotates at high speed, the diesel engine crankpin will throw out the lubricating oil through centrifugal force, which is the so-called "splash oil". The temperature of the splash oil reflects the working status of the crankpin and the big end bearing of the internal connecting rod in real time. If the oil temperature rises abnormally, it generally means that the crankpin may be abnormally worn and needs to be checked in time to avoid serious impact. Therefore, for nuclear diesel engines, the crankpin splash oil temperature is a very important operating parameter indicator.

[0003] As an important operating equipment in a nuclear power plant, a nuclear power diesel engine should be able to operate stably and reliably and provide backup power transmission in the event of a power outage in the plant area. However, the existing door cover assembly for measuring splash oil temperature cannot block the return oil in the return oil pipe, causing it to continuously flush the oil collection tank, causing the sensor to measure a lower temperature than the actual splash oil temperature, triggering a splash oil temperature deviation alarm. Compared with the average splash oil temperature of other cylinders, the error channel is temperature compensated on site. Since the temperature compensation is a fixed value, it cannot be automatically corrected with the diesel engine operating conditions and seasonal temperature changes. After more than a year of actual operation, a certain cylinder still has a splash oil temperature deviation alarm. 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 belongs to the diesel engine equipment, in order to minimize the impact on the nuclear power diesel engine body, it is considered to divert the return oil flow on the inside of the door cover to prevent the return oil in the door cover from directly flushing the oil collection tank. For this purpose, a door cover assembly for measuring the splash oil temperature of a nuclear power diesel engine is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a door cover assembly for measuring the temperature of splash oil of a nuclear power diesel engine, so as to solve the technical problems of the occurrence of the above-mentioned splash oil temperature deviation alarm and the direct flushing of the oil collection tank by the return oil in the door cover.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a door cover assembly for measuring the temperature of splash oil of a nuclear power diesel engine, comprising:

[0008] A temperature measuring door cover, and a through hole arranged at the top of the temperature measuring door cover, and a temperature measuring sensor is additionally arranged at the center of the top front end of the temperature measuring door cover;

[0009] The drainage baffle is arranged directly below the bottom of the temperature measuring door cover and is connected to the corresponding position of the bottom of the temperature measuring door cover;

[0010] The oil collecting tank is arranged directly below the bottom of the drainage baffle, and is connected to the corresponding part of the bottom of the temperature measuring door cover, and the oil collecting tank is connected to the temperature measuring sensor. The door cover assembly for splash oil temperature measurement uses the drainage baffle to effectively block the oil in the return oil pipe from the splash oil, and the temperature measuring sensor can effectively monitor the correct splash oil temperature in real time when the nuclear power diesel engine is running at high speed. In this way, on the one hand, the shutdown of the nuclear power diesel engine due to the wrong temperature deviation alarm is avoided, and the accuracy of the splash oil temperature measurement and the continuity and stability of the operation of the nuclear power diesel engine are greatly improved; on the other hand, the influence of the single cylinder temperature inaccuracy in the nuclear power diesel engine splash oil temperature measurement on the overall average temperature deviation is effectively reduced, and the influence of the false alarm of the splash oil temperature deviation on the stable and safe operation of the nuclear power diesel engine is avoided, and the accuracy of the nuclear power diesel engine splash oil temperature measurement is improved.

[0011] Preferably, a limit column is longitudinally inserted at the corresponding position between the temperature measuring door cover and the oil collecting tank, and a rotating head is added at the top center of the limit column. The temperature measuring door cover and the oil collecting tank are connected through the limit column, and the rotating head rotates on the top of the limit column.

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

[0013] Preferably, the bottom of the rotating shaft is coaxially connected with a rotating block, and the rotating block is located at the bottom center of the limiting column, and a side arc plate is 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 centers of both sides of the bottom of the limit column are rotatably connected to the limit side plates and fit with the corresponding side arc plates, and the center of one side of the limit side plate is connected with an arc spring, and the arc spring is connected to the corresponding part of the bottom of the limit column. Under the action of the arc spring, the convex end of the limit side plate fits with the corresponding part of the oil collecting tank, and when the side arc plate rotates, the limit side plate can be driven to rotate to one side and squeeze the arc spring. Compared with the transmission method using bolt connection, this structure is easy to disassemble and assemble, and is not easily separated due to vibration.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a door cover assembly for measuring the temperature of splash oil of a nuclear power diesel engine, which has the following beneficial effects:

[0017] The door cover assembly for measuring the temperature of the splash oil of the nuclear power diesel engine uses a drainage baffle to effectively block the oil in the return oil pipe from the splash oil, and can effectively monitor the correct splash oil temperature in real time through the temperature sensor when the nuclear power diesel engine is running at high speed. In this way, on the one hand, the shutdown of the nuclear power diesel engine due to erroneous temperature deviation alarm is avoided, and the accuracy of the splash oil temperature measurement and the continuity and stability of the operation of the nuclear power diesel engine are greatly improved; on the other hand, the influence of the single cylinder temperature inaccuracy on the overall average temperature deviation in the nuclear power diesel engine splash oil temperature measurement is effectively reduced, and the influence of the false alarm of the splash oil temperature deviation on the stable and safe operation of the nuclear power diesel engine is avoided, and the accuracy of the nuclear power diesel engine splash oil temperature measurement is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

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

[0020] Figure 3 This is a schematic diagram of the drainage baffle and oil collecting tank structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the limit column and its connection structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional rotation structure of the limit column of the utility model.

[0023] In the figure: 1. Temperature measuring door cover; 2. Drainage baffle; 3. Oil collecting tank; 4. Temperature measuring sensor; 5. Limiting column; 6. Rotating head; 7. Rotating shaft; 8. Rotating block; 9. Side arc plate; 10. Limiting side plate; 11. Arc spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a technical solution, a door cover assembly for measuring the temperature of splash oil of a nuclear power diesel engine, comprising: Figure 1, a temperature measuring door cover, and a through hole arranged at the top of the temperature measuring door cover, and a temperature measuring sensor is additionally arranged at the center of the top front end of the temperature measuring door cover;

[0026] See also Figure 2 , a drainage baffle is arranged directly below the bottom of the temperature measuring door cover and connected to the corresponding position of the bottom of the temperature measuring door cover;

[0027] The oil collecting tank is arranged directly below the bottom of the drainage baffle, and is connected to the corresponding part of the bottom of the temperature measuring door cover, and the oil collecting tank is connected to the temperature measuring sensor. The door cover assembly for splash oil temperature measurement uses the drainage baffle to effectively block the oil in the return oil pipe from the splash oil, and the temperature measuring sensor can effectively monitor the correct splash oil temperature in real time when the nuclear power diesel engine is running at high speed. In this way, on the one hand, the shutdown of the nuclear power diesel engine due to the wrong temperature deviation alarm is avoided, and the accuracy of the splash oil temperature measurement and the continuity and stability of the operation of the nuclear power diesel engine are greatly improved; on the other hand, the influence of the single cylinder temperature inaccuracy in the nuclear power diesel engine splash oil temperature measurement on the overall average temperature deviation is effectively reduced, and the influence of the false alarm of the splash oil temperature deviation on the stable and safe operation of the nuclear power diesel engine is avoided, and the accuracy of the nuclear power diesel engine splash oil temperature measurement is improved.

[0028] See also Figure 3 , Figure 4 The corresponding positions between the temperature measuring door cover and the oil collecting tank are longitudinally inserted with a limit column, and a rotating head is added at the top center of the limit column. The temperature measuring door cover and the oil collecting tank are connected through the limit column, and the rotating head rotates on the top of the limit column.

[0029] See also Figure 5 , the inner cavity of the limit column is longitudinally connected with a rotating shaft and connected with the bottom of the rotating head. The rotating head can drive the rotating shaft to rotate at the top of the limit column and adjust the direction of the rotating shaft. The bottom of the rotating shaft is coaxially connected with a rotating block, and the rotating block is located at the bottom center of the limit column, and 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. The centers of both sides of the bottom of the limit column are rotatably connected with the limit side plates and fit with the corresponding side arc plates, and the center of one side of the limit side plate is connected with an arc spring, which is connected to the corresponding position of the bottom of the limit column. Under the action of the arc spring, the convex end of the limit side plate fits with the corresponding position of the oil collecting tank, and when the side arc plate rotates, it can drive the limit side plate to rotate to one side and squeeze the arc spring. Compared with the transmission using bolt connection, this structure is easy to disassemble and assemble, and is not easily separated by vibration.

[0030] This solution: The door cover assembly for measuring the temperature of splash oil uses a drainage baffle to effectively block the oil in the return oil pipe from the splash oil, and the temperature sensor can effectively monitor the correct splash oil temperature in real time when the nuclear power diesel engine is running at high speed. The temperature measuring door cover is connected to the oil collecting tank through the limit column. The rotating head can drive the rotating shaft to rotate at the top of the limit column and adjust the direction of the rotating shaft. The rotating shaft drives the rotating block to rotate, and the side arc plate rotates in the same direction as the rotating block. Under the action of the arc spring, the convex end of the limit side plate fits with the corresponding part of the oil collecting tank, and when the side arc plate rotates, it can drive the limit side plate to rotate to one side and squeeze the arc spring to separate the convex end of the limit side plate from the oil collecting tank.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door cover assembly for measuring the temperature of splash oil of a nuclear power diesel engine, characterized in that: include: A temperature measuring door cover (1), and a through hole arranged at the top of the temperature measuring door cover (1), and a temperature measuring sensor (4) is additionally arranged at the center of the top front end of the temperature measuring door cover (1); The drainage baffle (2) is arranged directly below the bottom of the temperature measuring door cover (1) and is connected to a corresponding position of the bottom of the temperature measuring door cover (1); The oil collecting tank (3) is arranged directly below the bottom of the drainage baffle (2) and is connected to a corresponding portion of the bottom of the temperature measuring door cover (1), and the oil collecting tank (3) is connected to a temperature measuring sensor (4).

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

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

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

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

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