Oil supply system of high-level oil tank

Abstract

The utility model provides an oil supply system of a high-level oil tank. The oil supply system comprises main oil supply equipment, oil consumption equipment, a main oil supply pipeline, a high-level oil tank and a high-level oil tank pipeline. And the main oil supply pipeline is communicated with the main oil supply equipment and the oil consumption equipment. In the height direction, the high-position oil tank is located above the main oil supply pipeline, and the high-position oil tank pipeline comprises a shutdown oil supply pipeline communicated with the main oil supply pipeline and the high-position oil tank. The shutdown oil supply pipeline is provided with a first one-way valve and a pressure regulating valve, and the first one-way valve is communicated in the direction from the high-level oil tank to the main oil supply pipeline. By arranging the pressure regulating valve on the shutdown oil supply pipeline, the high-position oil tank oil supply system can regulate the oil pressure supplied to the oil consuming equipment by the high-position oil tank, so that the limitation on the mounting height and the structure of the high-position oil tank is reduced, and the difficulty in field arrangement, mounting and structural design of the high-position oil tank is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of lubricating oil systems, and in particular to a high-position oil tank oil supply system. Background Art

[0002] The high-position oil tank is an important component in the oil supply system. It is installed at a certain height and can supply oil to the oil-consuming equipment by gravity. When the main oil supply equipment is out of power or fails, the high-position oil tank can be used as an emergency oil supply equipment to provide oil for safe shutdown to prevent the oil-consuming equipment from being damaged due to lack of oil.

[0003] Oil-using equipment has certain requirements for the pressure of lubricating oil, so the installation height of the high-level oil tank is also subject to certain restrictions. On the one hand, the pressure of the highest liquid level in the high-level oil tank cannot exceed the shutdown alarm oil pressure of the oil-using equipment. On the other hand, the pressure of the lowest liquid level in the high-level oil tank cannot be lower than the safety oil pressure of the oil-using equipment. At the same time, the structure of the high-level oil tank also has certain restrictions to ensure that the oil volume between the highest and lowest liquid levels can meet the minimum oil supply requirements of the oil-using equipment during the safe shutdown process.

[0004] Due to the above reasons, the installation height and structural design of the high-level fuel tank are subject to relatively strict restrictions, resulting in greater difficulty in the on-site layout and structural design of the high-level fuel tank. Utility Model Content

[0005] The present application provides a high-position oil tank oil supply system to solve related technical problems.

[0006] The present application provides a high-position oil tank oil supply system, comprising a main oil supply device, an oil-using device, a main oil supply pipeline, a high-position oil tank and a high-position oil tank pipeline; the main oil supply pipeline connects the main oil supply device and the oil-using device; in the height direction, the high-position oil tank is located above the main oil supply pipeline, and the high-position oil tank pipeline includes a shutdown oil supply pipeline connecting the main oil supply pipeline and the high-position oil tank; the shutdown oil supply pipeline is provided with a first one-way valve and a pressure regulating valve, and the first one-way valve is conductive in the direction from the high-position oil tank to the main oil supply pipeline.

[0007] Furthermore, the main oil supply pipeline includes a first communication position connected to the shutdown oil supply pipeline, and the main oil supply pipeline is provided with a pressure indicator between the first communication position and the oil-consuming equipment.

[0008] Furthermore, the oil supply system also includes an overflow pipeline, which is installed on the upper part of the high-position oil tank and is connected to the high-position oil tank.

[0009] Furthermore, the overflow pipe is provided with a window for showing liquid passing through the overflow pipe.

[0010] Furthermore, there are multiple oil-consuming devices, and the number of the high-position oil tank pipelines is equal to the number of the corresponding oil-consuming devices. The high-position oil tank pipelines connect the corresponding oil-consuming devices with the high-position oil tank.

[0011] Furthermore, the pressure regulating valve is connected between the first one-way valve and the high-level oil tank.

[0012] Furthermore, the high-position oil tank is provided with a liquid level measuring device for detecting the liquid level height in the high-position oil tank.

[0013] Furthermore, the high-position oil tank pipeline also includes an oil filling pipeline, and the oil filling pipeline connects the main oil supply equipment and the high-position oil tank.

[0014] Furthermore, the high-position oil tank pipeline also includes a holding pipeline connecting the main oil supply equipment and the high-position oil tank, and the holding pipeline is provided with a limiting flow orifice plate for liquid circulation to maintain the hot standby state of the liquid in the high-position oil tank.

[0015] Furthermore, the first one-way valve includes an orifice plate structure for circulating liquid to maintain a hot standby state of the liquid in the high-level oil tank.

[0016] The solution provided in the present application can at least achieve the following technical effects: by installing a pressure regulating valve on the shutdown oil supply pipeline, the high-level oil tank oil supply system can adjust the oil pressure supplied by the high-level oil tank to the oil-consuming equipment, thereby reducing the restrictions on the installation height and structure of the high-level oil tank, and reducing the difficulty of on-site layout, installation and structural design of the high-level oil tank.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 is a schematic diagram of a high-level fuel tank oil supply system in an exemplary embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of another high-position fuel tank oil supply system in an exemplary embodiment of the present application.

[0021] Explanation of the accompanying drawings: main oil supply equipment, 10; oil-using equipment, 20; main oil supply pipeline, 30; connecting position, 31; pressure indicator, 32; second one-way valve, 33; high-level oil tank, 40; liquid level measuring device, 41; exhaust structure, 42; high-level oil tank pipeline, 50; shutdown oil supply pipeline, 51; first one-way valve, 511; pressure regulating valve, 512; oil filling pipeline, 52; stop valve, 521; holding pipeline, 53; flow limiting orifice, 531; overflow pipeline, 60; window, 61. DETAILED DESCRIPTION

[0022] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0023] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0024] In the oil supply system, when the main oil supply equipment is powered off or fails, the oil-consuming equipment will be cut off from oil and damaged. In order to avoid such a phenomenon, the oil supply system is usually equipped with a high-level oil tank as an emergency oil supply equipment. The high-level oil tank is installed at a certain height, and can supply oil by gravity when the main oil supply equipment is powered off or fails, so as to ensure the safe shutdown of the oil-consuming equipment. The safe shutdown of the oil-consuming equipment has certain requirements on the oil pressure and the amount of oil supplied. The oil pressure that can be generated by the high-level oil tank is related to the installation height, and the amount of oil that can be provided is related to the structural volume. Therefore, the installation height and structure of the high-level oil tank are greatly restricted, which makes the on-site layout and installation of the high-level oil tank and the structural design more difficult. The present application provides a high-level oil tank oil supply system to solve related technical problems.

[0025] like Figure 1 and Figure 2As shown, the present application provides a high-position oil tank oil supply system, including a main oil supply device 10, an oil-using device 20, a main oil supply pipeline 30, a high-position oil tank 40, a high-position oil tank pipeline 50 and an overflow pipeline 60. The main oil supply pipeline 30 connects the main oil supply device 10 with the oil-using device 20. In the height direction, the high-position oil tank 40 is located above the main oil supply pipeline 30. The high-position oil tank pipeline 50 includes a shutdown oil supply pipeline 51 connecting the main oil supply pipeline 30 and the high-position oil tank 40. The shutdown oil supply pipeline 51 is provided with a first one-way valve 511 and a pressure regulating valve 512, and the first one-way valve 511 is conductive in the direction from the high-position oil tank 40 to the main oil supply pipeline 30.

[0026] The first one-way valve 511 can prevent a large amount of lubricating oil from entering the oil-consuming equipment 20 from the main oil supply equipment 10 under normal working conditions, thereby ensuring the oil consumption of the oil-consuming equipment 20 and ensuring that the oil-consuming equipment 20 can work normally. By setting a pressure regulating valve 512 on the shutdown oil supply pipeline 51, the high-level oil tank oil supply system can adjust the oil pressure supplied from the high-level oil tank 40 to the oil-consuming equipment 20, reducing the restrictions on the installation height of the high-level oil tank 40 and reducing the difficulty of on-site layout, installation and structural design of the high-level oil tank. The pressure regulating valve 512 can be a manual throttle valve, a pneumatic pressure regulating valve, a variable throttle orifice plate, etc., and the specific type is not limited.

[0027] The number of oil-consuming equipment 20 can be multiple, and the number of high-level oil tank pipelines 50 is equal to the number of corresponding oil-consuming equipment 20, and the high-level oil tank pipelines 50 connect the corresponding oil-consuming equipment 20 with the high-level oil tank 40. The high-level oil tank oil supply system of the present application can be applied to multiple oil-consuming equipment 20 with different pressure requirements. For example: in a system where a steam turbine drives a compressor, the steam turbine and the compressor are two devices with different pressure requirements.

[0028] By providing a pressure regulating valve 512 on the high-position oil tank pipeline 50, the pressure regulating valve 512 in each high-position oil tank pipeline 50 can be adjusted to meet the oil pressure requirement of the corresponding oil-consuming equipment 20. In addition, for multiple oil-consuming equipment 20 installed at different heights, the high-position oil tank oil supply system of the present application can also meet the oil pressure requirement of each oil-consuming equipment 20 by adjusting the pressure regulating valve 512.

[0029] Specifically, the number of the oil-consuming devices 20 can be two, and accordingly, the number of the high-level oil tank pipelines 50 is also two. In this embodiment, the number of the main oil supply devices 10 and the main oil supply pipelines 30 can also be two, and each main oil supply device 10 provides lubricating oil to one oil-consuming device 20 respectively.

[0030] The number of the main oil supply device 10 and the main oil supply pipeline 30 can also be one, and lubricating oil can be provided to multiple oil-consuming devices 20 through one main oil supply device 10. In this embodiment, the main oil supply pipeline 30 may include a main line (not shown) and two branches (not shown). The main line is connected to the main oil supply device 10, and each branch is connected to an oil-consuming device 20.

[0031] like Figure 1 As shown, the main oil supply pipeline 30 includes a first connecting position 31. The first connecting position 31 is connected to the shutdown oil supply pipeline 51. The main oil supply pipeline 30 may be provided with a pressure indicator 32 and a second one-way valve 33. The pressure indicator 32 is located between the first connecting position 31 and the oil-consuming device 20, and is used to detect the pressure in the main oil supply pipeline 30. Specifically, the pressure indicator 32 may be provided at the inlet of the oil-consuming device 20. The second one-way valve 33 is located between the first connecting position 31 and the main oil supply device 10, and prevents the lubricating oil in the main oil supply pipeline 30 from flowing back into the main oil supply device 10.

[0032] Before the oil supply system is officially put into operation, the pressure regulating valve 512 will be debugged first so that the working parameters of the pressure regulating valve 512 meet the oil supply requirements. By setting the pressure indicator 32, the debugging convenience of the high-level oil tank oil supply system is improved. The pressure indicator 32 can be a pressure gauge, a pressure transmitter, etc.

[0033] The specific process of debugging is as follows: First, the high-level oil tank 40 is filled with oil. Then, the high-level oil tank 40 that has been filled with oil supplies oil to the oil-consuming equipment 20 to simulate the oil supply process of the oil supply system under the condition of power outage or failure of the main oil supply equipment 10. After that, the debugging personnel adjust the pressure regulating valve 512 and observe the reading of the pressure indicator 32, so that the oil pressure of the main oil supply pipeline 30 is slightly lower than the shutdown oil pressure of the oil-consuming equipment 20. At this point, the debugging of the pressure regulating valve 512 is completed.

[0034] A liquid level measuring device 41 and an exhaust structure 42 may be provided on the high-level oil tank 40. The liquid level measuring device 41 is used to detect the liquid level height in the high-level oil tank 40. The specific type of the liquid level measuring device 41 is not limited, and may be a static pressure level gauge, a capacitive level sensor, a float level gauge, a radar level gauge, etc. The exhaust structure 42 is used to connect the internal space of the high-level oil tank 40 with the external atmospheric space, so that the liquid in the high-level oil tank 40 can flow down smoothly by gravity. The exhaust structure 42 may be an exhaust pipe, etc.

[0035] like Figure 2As shown, the high-position oil tank pipeline 50 may include a shutdown oil supply pipeline 51, an oil filling pipeline 52 and a holding pipeline 53. In the shutdown oil supply pipeline 51, the pressure regulating valve 512 is connected between the first check valve 511 and the high-position oil tank 40. During the oil supply process of the high-position oil tank 40, the liquid first passes through the pressure regulating valve 512 and then passes through the first check valve 511, thereby avoiding the liquid disturbance of the first check valve 511 from affecting the pressure regulating valve 512, thereby improving the debugging efficiency. In other embodiments, the first check valve 511 may also be located between the pressure regulating valve 512 and the high-position oil tank 40, and the liquid first passes through the first check valve 511 and then passes through the pressure regulating valve 512.

[0036] The oil filling pipeline 52 connects the oil supply device 10 and the high-level oil tank 40. The oil supply system can fill the high-level oil tank 40 with oil through the main supply device 10. A stop valve 521 is provided on the oil filling pipeline 52. When filling oil, the stop valve 521 is opened. After the oil filling is completed, the stop valve 521 is closed.

[0037] The main oil supply device 10 is connected to the high-level oil tank 40 through the pipeline 53. The pipeline 53 is provided with a limiting flow orifice 531 for liquid circulation to maintain the hot standby state of the liquid in the high-level oil tank 40. The limiting orifice 531 is provided with a fine hole structure so that the liquid in the high-level oil tank 40 and the main oil supply pipeline 30 can have a certain liquid exchange without affecting the pressure of the system.

[0038] In this embodiment, the first one-way valve 511, the pressure regulating valve 512, the stop valve 521 and the flow limiting orifice 531 can be assembled to form an assembly to improve the installation efficiency of the oil supply system. The shutdown oil supply pipeline 51, the oil filling pipeline 52 and the holding pipeline 53 are arranged in parallel. In another embodiment, the first one-way valve 511 can be provided with an orifice structure for liquid circulation to maintain the hot standby state of the liquid in the high-level oil tank 40. The orifice structure is integrated in the first one-way valve 511, which further improves the installation efficiency of the oil supply system.

[0039] The overflow pipe 60 can be installed on the upper part of the high-level oil tank 40 and communicated with the high-level oil tank 40. The liquid overflowing from the overflow pipe 60 can flow to the main oil tank or other return pipes in the oil supply system. The overflow pipe 60 can provide a small flow circulation for the high-level oil tank 40 to further maintain the hot standby state of the liquid in the high-level oil tank 40. The overflow pipe 60 can be provided with a window 61 for showing that the liquid passes through the overflow pipe 60, so as to indicate that the high-level oil tank 40 has reached a full liquid state.

[0040] When installing the high-position oil tank 40, for the lowest installation height, the oil pressure of the high-position oil tank 40 is greater than the lowest safety oil pressure of the oil-consuming equipment 20. When there are multiple oil-consuming equipment 20, the oil pressure of the high-position oil tank 40 needs to be greater than the maximum safety oil pressure of the multiple oil-consuming equipment 20. For the highest installation height, the oil pressure in the high-position oil tank 40 is not greater than the pressure of the main oil supply pipeline 30, and the lubricating oil can smoothly enter the high-position oil tank 40.

[0041] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A high-position oil tank oil supply system, characterized in that: include: Main oil supply equipment, oil-using equipment, main oil supply pipeline, high-position oil tank and high-position oil tank pipeline; the main oil supply pipeline connects the main oil supply equipment and the oil-using equipment; In the height direction, the high-position oil tank is located above the main oil supply pipeline, and the high-position oil tank pipeline includes a shutdown oil supply pipeline connecting the main oil supply pipeline and the high-position oil tank; The shutdown oil supply pipeline is provided with a first one-way valve and a pressure regulating valve, and the first one-way valve is conductive in the direction from the high-level oil tank to the main oil supply pipeline.

2. The high-position oil tank oil supply system according to claim 1, characterized in that: The main oil supply pipeline includes a first communication position connected to the shutdown oil supply pipeline, and the main oil supply pipeline is provided with a pressure indicator between the first communication position and the oil-consuming equipment.

3. The high-position oil tank oil supply system according to claim 1, characterized in that: The high-position oil tank oil supply system further includes an overflow pipeline, which is installed on the upper part of the high-position oil tank and is connected to the high-position oil tank.

4. The high-position oil tank oil supply system according to claim 3, characterized in that: The overflow conduit is provided with a viewing window for showing liquid passing through the overflow conduit.

5. The high-position oil tank oil supply system according to claim 1, characterized in that: There are multiple oil-consuming devices, and the number of the high-position oil tank pipelines is equal to the number of the corresponding oil-consuming devices. The high-position oil tank pipelines connect the corresponding oil-consuming devices with the high-position oil tank.

6. The high-position oil tank oil supply system according to claim 1, characterized in that: The pressure regulating valve is connected between the first one-way valve and the high-level oil tank.

7. The high-position oil tank oil supply system according to claim 1, characterized in that: The high-position oil tank is provided with a liquid level measuring device for detecting the liquid level height in the high-position oil tank.

8. The high-position oil tank oil supply system according to claim 1, characterized in that: The high-position oil tank pipeline also includes an oil filling pipeline, and the oil filling pipeline connects the main oil supply equipment and the high-position oil tank.

9. The high-position oil tank oil supply system according to claim 8, characterized in that: The high-position oil tank pipeline also includes a holding pipeline connecting the main oil supply equipment and the high-position oil tank. The holding pipeline is provided with a limited flow orifice plate for liquid circulation to maintain a hot standby state of the liquid in the high-position oil tank.

10. The high-position oil tank oil supply system according to claim 1, characterized in that: The first one-way valve comprises an orifice plate structure for circulating liquid to keep the liquid in the high-level oil tank in a hot standby state.

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