Thin oil lubrication system

Abstract

The embodiment of the utility model provides a thin oil lubrication system, which relates to the technical field of thin oil lubrication system design, and comprises an oil tank, a main oil supply pipeline, a first oil supply branch and a second oil supply branch, the main oil supply pipeline is communicated with the oil tank; the first oil supply branch and the second oil supply branch are both communicated with the main oil supply pipeline; a first flow control mechanism is arranged on the main oil supply pipeline and used for controlling the flow of oil in the main oil supply pipeline. A second flow control mechanism is arranged on the first oil supply branch and used for controlling the oil flow in the first oil supply branch. A third flow control mechanism is arranged on the second oil supply branch and used for controlling the oil flow in the third oil supply branch. According to the technical scheme, it can be guaranteed that oil supply flow is constant at any time, and flow fluctuation is prevented from being too large; and each oil supply branch is independently adjusted, so that different flow requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of thin oil lubrication system design, in particular to a thin oil lubrication system. Background Art

[0002] The ship lift cabin uses a fully balanced gear climbing type one-stage vertical ship lift. The operation of the ship lift cabin is decentralized by four drive units arranged at the four corners of the cabin. The open pinion installed on the cabin structure climbs along the rack installed on the concrete tower column to achieve vertical lifting and lowering of the cabin.

[0003] Each drive system of the ship lift is equipped with an external thin oil lubrication system to force lubrication of the main reducer and bevel gear box C. The main control system of the ship lift monitors the flow of the lubrication system in real time. When the flow of the lubrication system is too low or too high, the control system alarms and shuts down the ship lift. Therefore, the oil supply stability of the thin oil lubrication system directly affects the stable operation of the ship lift.

[0004] The existing thin oil lubrication system flow measurement and control is imperfect, and the flow control is not accurate, with large fluctuations, and it cannot be adjusted in real time when the system flow fluctuates.

[0005] Due to the above problems, the thin oil lubrication system operates unstably, has a high failure rate, and has poor lubrication effect, which leads to damage to the main equipment and requires frequent repairs, affecting the safe and stable operation of the equipment, reducing production efficiency, and increasing the workload of equipment overhaul and maintenance, increasing costs, and seriously affecting economic benefits. Utility Model Content

[0006] The embodiment of the utility model provides a thin oil lubrication system to solve the problems existing in the thin oil lubrication system in the prior art.

[0007] Other features and advantages of the present invention will become apparent from the following detailed description or may be learned in part from the practice of the present invention.

[0008] According to a first aspect of an embodiment of the utility model, there is provided a thin oil lubrication system, comprising: an oil tank, a main oil supply pipeline, a first oil supply branch and a second oil supply branch;

[0009] The main oil supply pipeline is in communication with the oil tank;

[0010] The first oil supply branch and the second oil supply branch are both connected to the main oil supply pipeline;

[0011] The main oil supply pipeline is provided with a first flow control mechanism for controlling the oil flow in the main oil supply pipeline;

[0012] The first oil supply branch is provided with a second flow control mechanism for controlling the oil flow in the first oil supply branch;

[0013] The second oil supply branch is provided with a third flow control mechanism for controlling the oil flow in the second oil supply branch.

[0014] In some embodiments of the present invention, based on the above solution, it also includes: an internal circulation pipeline;

[0015] A first electric cone valve is arranged on the inner circulation pipeline;

[0016] One end of the internal circulation pipeline is connected to the main oil supply pipeline, and the other end is connected to the oil tank.

[0017] In some embodiments of the present utility model, based on the aforementioned solution, the first flow control mechanism includes: a motor, a first flow transmitter and a first PID controller;

[0018] The motor is installed at the oil outlet of the oil tank;

[0019] The first flow transmitter is arranged on the main oil supply pipeline;

[0020] The first PID controller is connected to the motor and the first flow transmitter respectively.

[0021] In some embodiments of the present utility model, based on the above scheme, the second flow control mechanism includes: a second electric cone valve, a second flow transmitter and a second PID controller;

[0022] The second electric cone valve and the second flow transmitter are arranged on the first oil supply branch, the second electric cone valve is close to the connection between the first oil supply branch and the main oil supply pipeline, and the second flow transmitter is close to the outlet of the first oil supply branch;

[0023] The second PID controller is connected to the second electric cone valve and the second flow transmitter respectively.

[0024] In some embodiments of the present utility model, based on the above scheme, the third flow control mechanism includes: a third electric cone valve, a third flow transmitter and a third PID controller;

[0025] The third electric cone valve and the third flow transmitter are arranged on the second oil supply branch, the third electric cone valve is close to the connection between the second oil supply branch and the main oil supply pipeline, and the third flow transmitter is close to the outlet of the second oil supply branch;

[0026] The third PID controller is connected to the third electric cone valve and the third flow transmitter respectively.

[0027] In some embodiments of the present invention, based on the above solution, the motor is a variable frequency motor.

[0028] In some embodiments of the present utility model, based on the above solution, a temperature sensor is also provided on the main oil supply pipeline.

[0029] In some embodiments of the present utility model, based on the above-mentioned solution, a pressure transmitter is also provided on the main oil supply pipeline.

[0030] The technical solution of the utility model can ensure that the oil supply flow is constant at all times and prevent excessive flow fluctuations; the oil supply flow is automatically adjusted through the first, second and third flow control mechanisms, which is stable and reliable, reduces workload and labor costs; each oil supply branch is adjusted separately to meet different flow requirements.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0033] Figure 1 A schematic structural diagram of a thin oil lubrication system according to an embodiment of the utility model is shown.

[0034] Description of Reference Numerals

[0035] 1- oil tank, 2- main oil supply pipeline, 3- first oil supply branch, 4- second oil supply branch, 5- internal circulation pipeline, 6- first electric cone valve, 7- motor, 8- first flow transmitter, 9- second electric cone valve, 10- second flow transmitter, 11- third electric cone valve, 12- third flow transmitter, 13- temperature sensor, 14- pressure transmitter. DETAILED DESCRIPTION

[0036] The example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present invention will be more comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art.

[0037] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present utility model. However, those skilled in the art will appreciate that the technical solution of the present utility model can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present utility model.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those shown or described.

[0039] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of 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.

[0040] Some embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0041] In order to solve the problems of imperfect flow measurement and control, inaccurate flow control, large fluctuations, etc. of the thin oil lubrication system in the prior art, the embodiment of the utility model provides a thin oil lubrication system, which includes: an oil tank, a main oil supply pipeline, a first oil supply branch and a second oil supply branch;

[0042] The main oil supply pipeline is in communication with the oil tank;

[0043] The first oil supply branch and the second oil supply branch are both connected to the main oil supply pipeline;

[0044] The main oil supply pipeline is provided with a first flow control mechanism for controlling the oil flow in the main oil supply pipeline;

[0045] The first oil supply branch is provided with a second flow control mechanism for controlling the oil flow in the first oil supply branch;

[0046] The second oil supply branch is provided with a third flow control mechanism for controlling the oil flow in the second oil supply branch.

[0047] It can be understood that during the operation of the thin oil lubrication system, the first flow control mechanism can monitor and control the flow in the main oil supply pipeline to ensure that the flow in the main oil supply pipeline reaches the set threshold and is in a stable state; similarly, the second flow control mechanism and the third flow control mechanism can control the flow of the two branches to reach the set threshold and the flow is stable; thereby achieving a constant flow in the main oil supply pipeline and each oil supply branch.

[0048] For example, see Figure 1 , shows a schematic structural diagram of a thin oil lubrication system according to an embodiment of the utility model.

[0049] like Figure 1 As shown, the thin oil lubrication system includes an oil tank 1, a main oil supply pipeline 2, a first oil supply branch 3 and a second oil supply branch 4; the main oil supply pipeline 2 is connected to the oil outlet of the oil tank 1, the first oil supply branch 3 and the second oil supply branch 4 are connected to the end of the main oil supply pipeline 2, and are communicated with the main oil supply pipeline 2 to receive the oil transmitted by the main oil supply pipeline 2.

[0050] The first flow control mechanism is arranged on the main oil supply pipeline 2, and can monitor and control the oil flow in the main oil supply pipeline 2. The second flow control mechanism is arranged on the first oil supply branch 3, and can monitor and control the oil flow in the first oil supply branch 3. The third flow control mechanism is arranged on the second oil supply branch 4, and can monitor and control the oil flow in the second oil supply branch 4. The first flow control mechanism, the second flow control mechanism and the third flow control mechanism are arranged on the second oil supply branch 4. Figure 1 Not shown in the figure.

[0051] In some feasible embodiments, based on the above solution, it further includes: an internal circulation pipeline;

[0052] A first electric cone valve is arranged on the inner circulation pipeline;

[0053] One end of the internal circulation pipeline is connected to the main oil supply pipeline, and the other end is connected to the oil tank.

[0054] It can be understood that during the startup and heating phase of the thin oil lubrication system, before the oil temperature reaches the set temperature, the internal circulation pipeline is opened, and the first oil supply branch and the second oil supply branch are closed, so that the oil circulates in the oil tank, reducing heat loss and improving heating efficiency.

[0055] For example, Figure 1As shown, the inner circulation pipeline 5 is connected with the main oil supply pipeline 2, and can receive the oil delivered by the main oil supply pipeline 2; a first electric cone valve 6 is arranged on the inner circulation pipeline 5. When internal circulation is required, the first electric cone valve 6 is opened, and the first oil supply branch 3 and the second oil supply branch 4 are closed. In this way, the oil delivered from the main oil supply pipeline 2 will return to the oil tank 1 through the inner circulation pipeline 5, completing the internal circulation.

[0056] In some feasible embodiments, based on the above scheme, the first flow control mechanism includes: a motor, a first flow transmitter and a first PID controller;

[0057] The motor is installed at the oil outlet of the oil tank;

[0058] The first flow transmitter is arranged on the main oil supply pipeline;

[0059] The first PID controller is connected to the motor and the first flow transmitter respectively.

[0060] It can be understood that the first flow transmitter monitors the oil flow in the main oil supply pipeline in real time, and transmits the monitored flow information to the first PID controller. The first PID controller controls the motor to operate according to the real-time flow in the main oil supply pipeline to ensure that the oil flow in the main oil supply pipeline meets the set threshold. At the same time, the first PID controller can also control the motor to operate stably to ensure the stable flow of oil in the main oil supply pipeline.

[0061] For example, Figure 1 As shown, the motor 7 is installed at the oil outlet of the oil tank 1, and the first flow transmitter 8 is installed at the end of the main oil supply pipeline 2, close to the connection between the main oil supply pipeline 2 and the first oil supply branch 3 and the second oil supply branch 4. With this arrangement, the flow monitored by the first flow transmitter 8 is the flow that is about to flow into the two branches, thereby improving the accuracy of flow monitoring.

[0062] It should be noted that the first PID controller is not Figure 1 As shown in the figure, its connection relationship has been explained in the above embodiment, so it will not be repeated here.

[0063] In some feasible embodiments, based on the above solution, the second flow control mechanism includes: a second electric cone valve, a second flow transmitter and a second PID controller;

[0064] The second electric cone valve and the second flow transmitter are arranged on the first oil supply branch, the second electric cone valve is close to the connection between the first oil supply branch and the main oil supply pipeline, and the second flow transmitter is close to the outlet of the first oil supply branch;

[0065] The second PID controller is connected to the second electric cone valve and the second flow transmitter respectively.

[0066] It can be understood that the second flow transmitter monitors the oil flow in the first oil supply branch in real time, and transmits the monitored flow information to the second PID controller. The second PID controller controls the opening of the second electric cone valve according to the real-time flow in the first oil supply branch, and then adjusts the oil flow value in the first oil supply branch to ensure that the oil flow in the first oil supply branch meets the set threshold.

[0067] For example, Figure 1 As shown, the second electric cone valve 9 and the second flow transmitter 10 are arranged on the first oil supply branch 3, and the second electric cone valve 9 is close to the connection between the first oil supply branch 3 and the main oil supply pipeline 2 to ensure that the oil flow in the entire first oil supply branch 3 can be controlled. The second flow transmitter 10 is arranged close to the oil supply port of the first oil supply branch 3 to ensure that the monitored real-time flow is the oil flow to be output to the outside by the first oil supply branch 3, thereby improving the accuracy of monitoring.

[0068] It should be noted that the second PID controller is not Figure 1 As shown in the figure, its connection relationship has been explained in the above embodiment, so it will not be repeated here.

[0069] In some feasible embodiments, based on the above scheme, the third flow control mechanism includes: a third electric cone valve, a third flow transmitter and a third PID controller;

[0070] The third electric cone valve and the third flow transmitter are arranged on the second oil supply branch, the third electric cone valve is close to the connection between the second oil supply branch and the main oil supply pipeline, and the third flow transmitter is close to the outlet of the second oil supply branch;

[0071] The third PID controller is connected to the third electric cone valve and the third flow transmitter respectively.

[0072] It can be understood that the third flow transmitter monitors the oil flow in the second oil supply branch in real time, and transmits the monitored flow information to the third PID controller. The third PID controller controls the opening of the third electric cone valve according to the real-time flow in the second oil supply branch, and then adjusts the oil flow value in the second oil supply branch to ensure that the oil flow in the second oil supply branch meets the set threshold.

[0073] For example, Figure 1As shown, the third electric cone valve 11 and the third flow transmitter 12 are arranged on the second oil supply branch 4, and the third electric cone valve 11 is close to the connection between the second oil supply branch 4 and the main oil supply pipeline 2 to ensure that the third electric cone valve 11 can control the oil flow in the entire second oil supply branch 4, and the third flow transmitter 12 is arranged close to the oil supply port of the second oil supply branch 4 to ensure that the monitored real-time flow is the oil flow that the second oil supply branch 4 wants to output to the outside, thereby improving the monitoring accuracy.

[0074] In some feasible embodiments, based on the above-mentioned solution, the motor adopts a variable frequency motor.

[0075] It is understandable that the speed of the variable frequency motor can be controlled by the first PID controller, thereby adjusting the total oil supply amount to achieve flow control in the total oil supply pipeline 2.

[0076] In some feasible embodiments, based on the above solution, a temperature sensor is also provided on the main oil supply pipeline.

[0077] For example, Figure 1 As shown, the temperature sensor 13 is arranged on the main oil supply pipeline 2 to monitor the temperature on the main oil supply pipeline 2, and a warning can be given when the temperature exceeds a set temperature threshold.

[0078] In some feasible embodiments, based on the above-mentioned solution, a pressure transmitter is also provided on the main oil supply pipeline.

[0079] For example, Figure 1 As shown, the pressure transmitter 14 is arranged on the main oil supply pipeline 2 to monitor the pressure in the main oil supply pipeline 2 and give a warning when the pressure exceeds a set pressure threshold.

[0080] Based on the same utility model concept, an embodiment of the utility model further provides a flow control method for a thin oil lubrication system, which is applied to the thin oil lubrication system described in any of the above embodiments.

[0081] Specifically, the method includes:

[0082] After the oil temperature in the oil tank reaches the set temperature value, the main oil supply pipeline is connected, and oil is supplied to the first oil supply branch and the second oil supply branch through the main oil supply pipeline;

[0083] According to the actual situation, the first flow threshold, the second flow threshold and the third flow threshold are set respectively;

[0084] Controlling the flow value in the total oil supply pipeline to the first flow threshold value by a first flow control mechanism;

[0085] When the flow value in the total oil supply pipeline reaches the first flow threshold and the flow in the total oil supply pipeline is in a stable state, the flow value in the first oil supply branch is controlled to the second flow threshold by the second flow control mechanism, and the flow value in the second oil supply branch is controlled to the third flow threshold by the third flow control mechanism.

[0086] In some feasible embodiments, based on the above solution, before the oil temperature in the oil tank reaches the set temperature value, the method further includes:

[0087] Connect the main oil supply pipeline and the internal circulation pipeline to circulate the oil internally.

[0088] It should be noted that internal circulation before the oil temperature reaches the set temperature can reduce heat loss and improve heating efficiency.

[0089] To sum up, the thin oil lubrication system provided in the embodiment of the utility model can achieve the stability of the total oil supply of the thin oil lubrication system and the oil supply of each branch pipe through three-way PID flow regulation, thereby ensuring the stable operation of the ship lift lubricated by the thin oil lubrication system; the total oil supply flow is controlled by adjusting the speed of the variable frequency motor, which can effectively reduce energy consumption and save costs.

[0090] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A thin oil lubrication system, characterized in that: include: A fuel tank, a main fuel supply pipeline, a first fuel supply branch and a second fuel supply branch; The main oil supply pipeline is in communication with the oil tank; The first oil supply branch and the second oil supply branch are both connected to the main oil supply pipeline; The main oil supply pipeline is provided with a first flow control mechanism for controlling the oil flow in the main oil supply pipeline; The first oil supply branch is provided with a second flow control mechanism for controlling the oil flow in the first oil supply branch; The second oil supply branch is provided with a third flow control mechanism for controlling the oil flow in the second oil supply branch.

2. The thin oil lubrication system according to claim 1, characterized in that: Also includes: Internal circulation pipeline; A first electric cone valve is arranged on the inner circulation pipeline; One end of the internal circulation pipeline is connected to the main oil supply pipeline, and the other end is connected to the oil tank.

3. The thin oil lubrication system according to any one of claims 1 to 2, characterized in that: The first flow control mechanism includes: a motor, a first flow transmitter and a first PID controller; The motor is installed at the oil outlet of the oil tank; The first flow transmitter is arranged on the main oil supply pipeline; The first PID controller is connected to the motor and the first flow transmitter respectively.

4. The thin oil lubrication system according to any one of claims 1 to 2, characterized in that: The second flow control mechanism includes: a second electric cone valve, a second flow transmitter and a second PID controller; The second electric cone valve and the second flow transmitter are arranged on the first oil supply branch, the second electric cone valve is close to the connection between the first oil supply branch and the main oil supply pipeline, and the second flow transmitter is close to the outlet of the first oil supply branch; The second PID controller is connected to the second electric cone valve and the second flow transmitter respectively.

5. The thin oil lubrication system according to any one of claims 1 to 2, characterized in that: The third flow control mechanism includes: a third electric cone valve, a third flow transmitter and a third PID controller; The third electric cone valve and the third flow transmitter are arranged on the second oil supply branch, the third electric cone valve is close to the connection between the second oil supply branch and the main oil supply pipeline, and the third flow transmitter is close to the outlet of the second oil supply branch; The third PID controller is connected to the third electric cone valve and the third flow transmitter respectively.

6. The thin oil lubrication system according to claim 3, characterized in that: The motor is a variable frequency motor.

7. The thin oil lubrication system according to any one of claims 1 to 2, characterized in that: A temperature sensor is also provided on the main oil supply pipeline.

8. The thin oil lubrication system according to any one of claims 1 to 2, characterized in that: The main oil supply pipeline is also provided with a pressure transmitter.

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