Offshore platform filter capable of automatically switching working filter elements in unattended mode

Abstract

The utility model discloses an offshore platform filter capable of automatically switching working filter elements in an unattended mode, belongs to the technical field of generator sets, and solves the problems that an unattended generator set filter switching method in the prior art is complex in structure and high in needed cost. The filter capable of automatically switching the working filter elements in the unattended operation mode on the offshore platform comprises an outer pipe, a rotating motor, a connecting pipe and a controller, an inner pipe is rotationally arranged in the outer pipe, a partition part is arranged in the middle of the inner pipe, oil passing cavities are formed in the two ends of the inner pipe respectively, one end of the inner pipe extends to the outer side of the outer pipe, and the other end of the inner pipe extends to the outer side of the rotating motor. The extending end of the inner pipe is connected with the output end of the rotating motor, a plurality of filters are arranged on the periphery of the outer pipe, and the two ends of each filter communicate with an inner hole of the outer pipe through connecting pipes correspondingly. The offshore platform filter capable of automatically switching the working filter elements in the unattended mode is simple in structure and low in needed cost.

Description

Technical Field

[0001] This utility model relates to the field of generator set technology, and more specifically, it relates to a filter for an unattended offshore platform that automatically switches working filter elements. Background Technology

[0002] Generator sets used on offshore platforms are typically maintained only once every six months to a year, during which time the oil filter or diesel filter is replaced. However, oil filters or diesel filters can become clogged over time, reducing the supply of engine oil or diesel fuel and thus affecting the normal operation of the generator set.

[0003] Currently, the solution involves preparing multiple filters or filter elements, which are connected in parallel via pipelines. The filters or filter elements are switched using solenoid valves. The pressure difference between the inlet and outlet oil is detected to determine if a blockage has occurred. If a blockage is detected, the solenoid valve corresponding to the blocked filter or filter element is closed, and the solenoid valve corresponding to the new filter or filter element is opened, achieving automatic switching and protecting the stability of the generator set during unattended operation. However, this method requires a large number of pipelines and solenoid valves, making its structure more complex and costly. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a filter for automatic switching of working filter elements for unattended offshore platforms. The filter has a simple and compact structure, low cost, and achieves automatic switching, thus protecting the stability of generator operation during unattended periods.

[0005] The technical solution of this utility model is as follows: A filter for an unattended offshore platform with automatic switching of working filter elements includes an outer tube, a rotary motor, a connecting pipe, and a controller. An inner tube is rotatably arranged inside the outer tube. A partition is provided in the middle of the inner tube. Oil passage chambers are provided at both ends of the inner tube. One end of the inner tube extends to the outside of the outer tube and is connected to the output end of the rotary motor. Multiple filters are arranged around the outer tube. The two ends of the filters are connected to the inner hole of the outer tube through the connecting pipe. The inner tube at each of the two oil passage chambers is provided with a third oil hole for connecting to the connecting pipe. An oil inlet pipe is provided on one side of the outer tube of the filter and communicates with the inner hole of the outer tube. An oil outlet pipe is provided on the other side of the outer tube of the filter and communicates with the inner hole of the outer tube. Pressure gauges are provided on both the oil inlet pipe and the oil outlet pipe. The rotary motor and the pressure gauges are electrically connected to the controller.

[0006] As a further improvement, the inner walls at both ends of the outer tube are respectively provided with annular grooves corresponding to the positions of the oil inlet pipe and the oil outlet pipe, and the two ends of the outer tube are respectively provided with first oil holes communicating with the oil inlet pipe and the oil outlet pipe, and the inner tube is provided with second oil holes communicating with the annular grooves.

[0007] Furthermore, the outer tube between the two annular grooves is provided with two oil passage holes corresponding to the positions of the two third oil holes, and the two oil passage holes are respectively connected to the inlet and outlet of the filter.

[0008] Furthermore, sealing rings are provided on the inner tubes on both sides of the annular groove.

[0009] Furthermore, an opening sealing ring is provided on the inner tube at the connection between the third oil hole and the through oil hole, and a through hole is provided on the side wall of the opening sealing ring, the diameter of which is adapted to the diameter of the third oil hole.

[0010] Furthermore, the diameter of the third oil hole is adapted to the diameter of the oil passage hole.

[0011] Furthermore, the other end of the outer tube is provided with a detachable limiting plate.

[0012] Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model discloses an unattended automatic filter for switching working filter elements on an offshore platform. Several filters are arranged around an outer tube. Each filter is connected to the inner bore of the outer tube via a connecting pipe, an oil passage hole, and a third oil hole. An inner tube is installed within the inner bore of the outer tube. Both ends of the inner tube have oil passage chambers, each containing a second oil hole. These chambers are connected to the inlet and outlet oil pipes respectively via the second oil holes, an annular groove on the outer tube, and a first oil hole. By detecting the inlet pressure of the inlet pipe 7 and the outlet pressure of the outlet pipe 8 and comparing them with standard values, it is determined that the currently used filter is clogged. A motor drives the inner tube to rotate, aligning the two third oil holes of the inner tube with the oil passage holes of the new filter, thus switching to the new filter for filtration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of AA;

[0017] Figure 3 This is a flowchart illustrating the operation of this utility model.

[0018] Figure 4This is a cross-sectional structural diagram of the perforated sealing ring in this utility model.

[0019] Wherein: 1-Outer pipe, 2-Inner pipe, 3-Oil passage chamber, 4-Rotating motor, 5-Filter, 6-Connecting pipe, 7-Oil inlet pipe, 8-Oil outlet pipe, 9-Pressure gauge, 10-Annular groove, 11-First oil hole, 12-Second oil hole, 13-Third oil hole, 14-Oil passage hole, 15-Sealing ring, 16-Opening sealing ring, 17-Limiting plate, 18-Pan block, 19-First flange, 20-Second flange, 21-Partition section, 22-Through hole. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0021] See Figure 1-4 A filter for an unattended offshore platform with automatic switching of working filter elements includes an outer tube 1, a rotary motor 4, a connecting pipe 6, and a controller. An inner tube 2 is rotatably mounted inside the outer tube 1. The outer tube 1 is a hollow cylinder, and the inner tube 2 is rotatably installed within the inner hole of the outer tube 1. A partition 21 is provided in the middle of the inner tube 2, and oil passage chambers 3 are provided at both ends of the inner tube 2. One end of the inner tube 2 extends to the outside of the outer tube 1, and this extended end is connected to the output end of the rotary motor 4. Multiple filter elements are arranged around the periphery of the outer tube 1. The filter 5 has two ends connected to the inner hole of the outer tube 2 via connecting pipes 6. The inner tube 2 at each of the two oil passages 3 is provided with a third oil hole 13 for connecting to the connecting pipes 6. One side of the outer tube 1 of the filter 5 has an oil inlet pipe 7 connected to the inner hole of the outer tube 2, and the other side of the outer tube 1 has an oil outlet pipe 8 connected to the inner hole of the outer tube 2. Pressure gauges 9 are installed on both the oil pipe 7 and the oil outlet pipe 8. The rotary motor 4 and the pressure gauges 9 are electrically connected to the controller. Engine oil flows from the inlet pipe... Oil flows into the inlet pipe 7, and the pressure gauge 9 on the inlet pipe 7 measures the pressure when the oil enters. The oil enters one of the oil passage chambers 3 through the first oil hole 11 and the second oil hole 12. Then, the oil flows into the filter 5 through the third oil hole 13, the oil passage hole 14 corresponding to the inlet of the filter 5, and the connecting pipe 6. The filtered oil flows into another oil passage chamber 3 through the oil outlet hole 14, the connecting pipe 6, and the third oil hole 13 corresponding to the outlet of the filter 5. This oil passage chamber 3 is connected to the outlet pipe 8, and the oil flows out from the outlet pipe 8, completing the oil filtration work. The pressure gauge 9 on the outlet pipe 8 can measure the pressure when the oil is discharged, thereby obtaining the pressure difference between the inlet pressure and the outlet pressure. By comparing this with the standard value (which is calibrated after a blockage occurs), it can be determined whether the filter 5 in use is blocked. The filter structure of this automatic switching filter element is simple and compact, with low cost, and achieves automatic switching, protecting the stability of the generator set during unattended operation.

[0022] During operation, the oil inlet pressure of the inlet pipe 7 and the oil outlet pressure of the outlet pipe 8 are detected. When the pressure difference between the inlet and outlet pressures exceeds the calibrated value (obtained through calibration after blockage), it is considered that the currently used filter 5 is blocked. At this time, the controller controls the rotary motor 4 to rotate the inner tube 2, so that the two third oil holes 13 of the inner tube 2 are aligned with the oil inlet and oil outlet of the new filter 5, thereby switching to the new filter for filtration. This process is repeated to ensure automatic switching to a new filter when a filter becomes blocked. The number of filters is determined based on the actual length of the unattended operation period. In this embodiment, there are six filters 5, and the six filters 5 are arranged at equal intervals in a circle with the central axis of the outer tube 1 as the center.

[0023] In this embodiment, the inner walls at both ends of the outer tube 1 are respectively provided with annular grooves 10 corresponding to the positions of the oil inlet pipe 7 and the oil outlet pipe 8. The two ends of the outer tube 1 are respectively provided with first oil holes 11 communicating with the oil inlet pipe 7 and the oil outlet pipe 8. The inner tube 2 is provided with second oil holes 12 communicating with the annular grooves 10. The oil passage cavities 3 at both ends of the inner tube 2 are respectively connected to the oil inlet pipe 7 and the oil outlet pipe 8 through the annular grooves 10, the first oil holes 11, and the second oil holes 12 at both ends of the outer tube 1. The diameter of the annular grooves 10 is larger than that of the second oil holes 12, which increases the allowable error when processing the outer tube 1 and the inner tube 2 during the installation of the inner tube 2, thereby reducing the scrap rate of the product and thus reducing the cost.

[0024] In this embodiment, the outer tube 1 between the two annular grooves 10 is provided with two oil passage holes 14 corresponding to the positions of the two third oil holes 13 respectively. The two oil passage holes 14 are respectively connected to the inlet and outlet of the filter 5. Furthermore, the outer tube 1 is provided with multiple sets of oil passage holes 14. Multiple filters arranged around the outer tube 1 are connected to the multiple sets of oil passage holes 14 one by one, and are connected to the inner hole of the outer tube 1 through the oil passage holes 14.

[0025] In this embodiment, sealing rings 15 are provided on the inner tubes 2 on both sides of the annular groove 10 to further improve the sealing between the second oil hole 12 and the annular groove 10.

[0026] In this embodiment, an opening sealing ring 16 is provided on the inner tube 2 at the junction of the third oil hole 13 and the oil passage hole 14. The side wall of the opening sealing ring 16 is provided with a through hole 22. The diameter of the through hole 22 is adapted to the diameter of the third oil hole 13, which further improves the sealing performance between the third oil hole 13 and the oil passage hole 14.

[0027] In this embodiment, the diameter of the third oil hole 13 is adapted to the diameter of the oil passage hole 14. The diameter of the third oil hole 13 is the same as the diameter of the oil passage hole 14, so that the third oil hole 13 and the oil passage hole 14 coincide, thereby expanding the channel for oil to flow to the connecting pipe as much as possible, avoiding affecting the oil flow rate and thus affecting the engine.

[0028] In this embodiment, the other end of the outer tube 1 is provided with a detachable limiting plate 17. The limiting plate 17 is connected to the outer tube 1 by bolts. The outer tube 1 is a hollow cylinder. The limiting plate 17 seals one end of the inner hole of the outer tube 1, which can prevent displacement during the rotation of the inner tube 2.

[0029] Furthermore, a detachable pad 18 can be provided on the end face of the limiting plate 17 at one end of the outer tube 1. When the inner tube 2 is installed, one end of the inner tube 2 is in contact with the pad 18. At this time, the second oil hole 12 and the annular groove 10, and the third oil hole 13 and the oil passage hole 14 are all aligned. When the length of the inner tube 2 is too short, causing the second oil hole 12 and the annular groove 10, and the third oil hole 13 and the oil passage hole 14 to be unable to align, the pad 18 can be installed on the limiting plate 17 to make them aligned. There can be multiple pads 18 installed on the limiting plate 17. The pads 18 can be increased or decreased according to the actual situation, so that the outer tube 1 can be used for inner tubes 2 of different lengths, thereby improving its applicability.

[0030] Furthermore, the inner tube 2 is provided with a first flange 19 at the end connected to the rotary motor 4, and a second flange 20 is provided on the output end of the rotary motor 4. The first flange 19 and the second flange 20 are connected by bolts. The detachable connection between the inner tube 2 and the rotary motor 4 facilitates the maintenance and repair of the rotary motor 4 and the inner tube 2.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A filter for unattended, automatically switching working filter elements on an offshore platform, characterized in that, The system includes an outer tube (1), a rotary motor (4), a connecting pipe (6), and a controller. An inner tube (2) is rotatably mounted inside the outer tube (1). A partition (21) is located in the middle of the inner tube (2). Oil passage chambers (3) are located at both ends of the inner tube (2). One end of the inner tube (2) extends to the outside of the outer tube (1), and this extended end is connected to the output end of the rotary motor (4). Multiple filters (5) are located around the outer tube (1). Both ends of each filter (5) are connected to the outer tube (4) via the connecting pipe (6). 1) The inner hole is connected, and the inner tube (2) at the two oil passage chambers (3) is respectively provided with a third oil hole (13) for connecting the connecting pipe (6). The outer tube (1) on one side of the filter (5) is provided with an oil inlet pipe (7) that is connected to the inner hole of the outer tube (1). The outer tube (1) on the other side of the filter (5) is provided with an oil outlet pipe (8) that is connected to the inner hole of the outer tube (1). The oil inlet pipe (7) and the oil outlet pipe (8) are both provided with pressure gauges (9). The rotary motor (4) and the pressure gauge (9) are both electrically connected to the controller.

2. The filter for unattended automatic switching of working filter elements on an offshore platform according to claim 1, characterized in that, The inner walls of both ends of the outer tube (1) are respectively provided with annular grooves (10) corresponding to the positions of the oil inlet pipe (7) and the oil outlet pipe (8). The two ends of the outer tube (1) are respectively provided with first oil holes (11) communicating with the oil inlet pipe (7) and the oil outlet pipe (8). The inner tube (2) is provided with second oil holes (12) communicating with the annular grooves (10).

3. The filter for unattended automatic switching of working filter elements on an offshore platform according to claim 2, characterized in that, The outer tube (1) between the two annular grooves (10) is provided with two oil passage holes (14) respectively corresponding to the positions of the two third oil holes (13). The two oil passage holes (14) are respectively connected to the inlet and outlet of the filter (5).

4. The filter for unattended automatic switching of working filter elements on an offshore platform according to claim 3, characterized in that, Sealing rings (15) are provided on the inner tubes (2) on both sides of the annular groove (10).

5. A filter for unattended automatic switching of working filter elements on an offshore platform according to claim 3, characterized in that, An opening sealing ring (16) is provided on the inner tube (2) at the junction of the third oil hole (13) and the oil passage hole (14). The side wall of the opening sealing ring (16) is provided with a through hole (22), and the diameter of the through hole (22) is adapted to the diameter of the third oil hole (13).

6. A filter for unattended automatic switching of working filter elements on an offshore platform according to claim 5, characterized in that, The diameter of the third oil hole (13) is adapted to the diameter of the oil passage hole (14).

7. A filter for unattended automatic switching of working filter elements on an offshore platform according to claim 1, characterized in that, The other end of the outer tube (1) is provided with a detachable limiting plate (17).

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