A device for detecting oil leakage in air-cooled radiator filters.

Abstract

This utility model relates to the field of oil leakage detection technology, and in particular to an oil leakage detection device for a lubricating oil air-cooled radiator filter element. It includes a filter element body installed on the circulating oil pipe of the radiator body, an oil pump for controlling the circulation of the circulating oil pipe on the circulating oil pipe, a collection cylinder located outside the filter element body, at least two proximity switches cooperating with a sensing element, and a controller. The upper end of the collection cylinder is open for collecting leaked oil from the filter element body. A buoyancy rod is slidably connected inside the collection cylinder via a connecting pipe, and a buoyancy ball is connected to the lower end of the buoyancy rod. This utility model utilizes the buoyancy of the buoyancy ball to drive the sensing element to contact the proximity switch at the corresponding position, thereby realizing a multi-position detection and graded early warning mechanism. This avoids misoperation or overreaction caused by single threshold detection, provides operators with more reasonable response time and decision-making basis, and reduces the workload of on-site personnel inspection.

Description

Technical Field

[0001] This utility model relates to the field of oil leakage detection technology, and in particular to an oil leakage detection device for a lubricating oil air-cooled radiator filter element. Background Technology

[0002] To ensure that the oil temperature of the operating equipment remains constant, most industrial production currently uses air-cooled radiators for heat exchange of lubricating oil. The oil filters of the air-cooled radiators are all installed on the outlet pipe of the oil pump (12), and the sealing structure uses end face O-ring seals. The installation method is threaded tightening. There are no external protective devices or oil pressure detection devices, and the structure is relatively simple.

[0003] Existing air-cooled radiator oil filters may suffer from defects during use, such as oil leakage due to impact damage, sudden pressure increase after filter element blockage, and oil leakage due to high oil pressure after cold start of equipment. These defects can range from minor losses of a large amount of lubricating oil and increased cleaning workload to serious damage to equipment due to lack of oil, affecting production and increasing production costs.

[0004] Based on the above situation, we propose a device for detecting oil leakage in air-cooled radiator filters to solve the above problems. Utility Model Content

[0005] This invention provides a device for detecting oil leakage in air-cooled radiator filters, in order to solve the problems in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A device for detecting oil leakage in a lubricating oil-cooled radiator filter element includes a filter element body installed on a circulating oil pipe of the radiator body. The circulating oil pipe is equipped with an oil pump for controlling the circulation of the circulating oil. The device also includes a collection cylinder located outside the filter element body, at least two proximity switches that cooperate with sensing elements, and a controller. The upper end of the collection cylinder is open for collecting leaked oil from the filter element body. A buoyancy rod is slidably connected inside the collection cylinder via a connecting pipe, and a buoyancy ball is connected to the lower end of the buoyancy rod. When the oil level in the collection cylinder changes, the buoyancy ball causes the buoyancy rod to move up and down. A sensing element is located at one end of the buoyancy rod outside the collection cylinder. The proximity switches are installed at different heights via mounting rods, and each proximity switch corresponds to a different oil level height, detecting signals when the buoyancy rod rises to different positions. The controller is electrically connected to the proximity switches and is configured to control corresponding warning states and device actions based on the received signals from the different proximity switches.

[0008] Preferably, the system also includes a primary warning element corresponding to the proximity switch located at the lower position and a secondary warning element corresponding to the proximity switch located at the upper position. The primary and secondary warning elements are electrically connected to the controller. When the controller receives signals from different proximity switches, it controls the corresponding warning element to issue an alarm. When the secondary warning element issues an alarm, the controller shuts down the oil pump.

[0009] Preferably, the lower end of the collection cylinder is connected to a recovery oil tank via an oil drain pipe, and the oil drain pipe is equipped with an oil drain valve electrically connected to the controller.

[0010] Preferably, the oil drain pipe is equipped with a flow meter, and the controller is further configured to detect the oil flow rate through the flow meter after the oil pump stops and the oil drain valve is opened. If the detected oil flow rate is greater than zero, it indicates that the oil is continuously leaking.

[0011] Preferably, a transparent observation window is provided on the outer wall of the collection cylinder.

[0012] Preferably, the upper end of the collecting cylinder is detachably connected to a cover plate.

[0013] The beneficial effects of this invention are as follows: by collecting the leaked oil in a centralized manner through the collection cylinder, the environmental pollution caused by spillage is reduced. As the level of the leaked oil rises, the buoyancy of the buoyancy ball causes the sensing element to contact the proximity switch at the corresponding position, thereby realizing a multi-position detection and graded early warning mechanism. This can more accurately reflect the actual situation of the oil leak, avoid misoperation or overreaction that may be caused by single threshold detection, and provide operators with more reasonable response time and decision-making basis. At the same time, while ensuring equipment safety, it minimizes the unnecessary impact on the normal operation of the equipment caused by oil leak detection and reduces the workload of on-site personnel for inspection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 Schematic diagram of the isometric structure provided by this utility model Figure 1 ;

[0016] Figure 2 Schematic diagram of the isometric structure provided by this utility model Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the internal structure of the collecting cylinder provided by this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the collecting cylinder installed on the circulating oil pipe in this utility model.

[0019] In the diagram: 1. Circulating oil pipe; 11. Filter element body; 12. Oil pump; 2. Collection cylinder; 21. Connecting pipe; 22. Buoyancy rod; 23. Buoyancy ball; 3. Sensing element; 31. Proximity switch; 32. Mounting rod; 301. Primary warning element; 302. Advanced warning element; 4. Controller; 5. Recovery oil tank; 51. Oil drain pipe; 52. Oil drain valve; 53. Flow meter; 6. Transparent observation window; 7. Cover plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] Reference Figures 1-4 As shown, a lubricating oil air-cooled radiator filter element leakage detection device includes a filter element body 11 installed on the circulating oil pipe 1 of the radiator body. An oil pump 12 for controlling the circulation of the circulating oil pipe 1 is installed on the circulating oil pipe 1. A collection cylinder 2 is sleeved outside the filter element body 11. The upper end of the collection cylinder 2 is open, and the lower end can be connected to a mounting base for the filter element body 11 to collect leaked oil from the filter element body 11. A buoyancy rod 22 is slidably connected inside the collection cylinder 2 via a connecting pipe 21, and a buoyancy ball 23 is connected to the lower end of the buoyancy rod 22. When the level of the leaked oil collected in the collection cylinder 2 changes, the buoyancy ball 23 drives the buoyancy rod 22 to move up and down. A sensing element 3 is provided at one end of the buoyancy rod 22 located outside the collection cylinder 2. At least two sensing elements are connected to the outer wall of the collection cylinder 2 via a mounting rod 32. The proximity switch 31 is matched with the element 3, and at least two proximity switches 31 are installed at different heights. Each proximity switch 31 corresponds to a different oil level and detects the signal when the buoyancy rod 22 rises to different positions. Specifically, the type of proximity switch 31 is not limited. For example, when the proximity switch 31 is a magnetic proximity switch 31, the sensing element 3 can be a magnet. When the buoyancy rod 22 rises with the oil level, the magnetic material approaches the magnetic proximity switch 31, which will change the magnetic field state inside the proximity switch 31, thereby triggering the proximity switch 31 to send a signal. When the proximity switch 31 is an inductive proximity switch 31, the sensing element 3 can be set as a metal sensing sheet. When the metal sensing sheet approaches the inductive proximity switch 31, it will cause the inductance of the inductor coil inside the inductive proximity switch 31 to change, thereby sending a signal.

[0022] The proximity switch 31 is also electrically connected to the controller 4. The controller 4 is configured to control the corresponding warning state and equipment action according to the signals received from different proximity switches 31. It also includes a primary warning element 301 corresponding to the proximity switch 31 located at the lower position and a high warning element 302 corresponding to the proximity switch 31 located at the upper position. The primary warning element 301 and the high warning element 302 are electrically connected to the controller 4. When the controller 4 receives the signals from different proximity switches 31, it controls the corresponding warning element to issue an alarm. When the high warning element 302 issues an alarm, the controller 4 shuts down the oil pump 12.

[0023] Specifically, when the level of leaked oil collected in the collection cylinder 2 is low, slight changes in oil pressure or vibrations in the surrounding environment may occur due to factors such as changes in oil pressure during equipment startup or shutdown. At this time, when the buoyancy ball 23 moves the buoyancy rod 22 upwards, it sends a signal to the lower proximity switch 31. The lower proximity switch 31 can then control the primary warning element 301 via the controller 4 to issue an alarm, prompting personnel to check immediately. However, it will not immediately stop the machine to avoid affecting work efficiency due to false alarms. When the upper proximity switch 31 issues an alarm, it indicates that the oil level in the collection cylinder 2 has risen to a certain height, potentially indicating a serious leak. In the event of an oil leak, the advanced warning device 302 will issue a more severe alarm. The alarms from the advanced warning device 302 and the primary warning device 301 may differ; for example, the advanced warning device 302 may issue an audible alarm while the primary warning device 301 may issue a visual alarm, to facilitate differentiation. Simultaneously, when the advanced warning device 302 issues an alarm, the controller 4 will also shut down the oil pump 12, stopping the oil circulation in the circulating oil pipe 1 to prevent more severe oil leakage. By designing multiple proximity switches 31 for graded early warning, the development stage of the oil leak can be reflected more precisely. Operators can understand the extent of equipment damage and the severity of the oil leak in real time based on different levels of warnings, and thus take appropriate measures.

[0024] Reference Figures 1-4 As shown, further, the lower end of the collecting cylinder 2 is connected to the recovery oil tank 5 via an oil drain pipe 51, and the oil drain pipe 51 is equipped with an oil drain valve 52 electrically connected to the controller 4. When the proximity switch 31 located at a high position sends a corresponding signal, it indicates that the oil level in the collecting cylinder 2 has reached a certain height. At this time, the controller 4 opens the oil drain valve 52, allowing the oil in the collecting cylinder 2 to enter the recovery oil tank 5 through the oil drain pipe 51, thus preventing the oil in the collecting cylinder 2 from leaking out from the connecting pipe 21 and causing spillage and pollution. In addition, the oil drain pipe 51 is detachably connected to the recovery oil tank 5, which facilitates the discharge of the oil in the recovery oil tank 5.

[0025] The oil drain pipe 51 is equipped with a flow meter 53, and the controller 4 is also configured to detect the oil flow rate through the flow meter 53 after the oil pump 12 stops and the oil drain valve 52 opens. If the detected oil flow rate is greater than zero, it indicates that the oil is continuously leaking. After the high-level warning is issued, the oil pump 12 stops the circulation of oil in the circulation oil circuit. After the oil drain valve 52 is opened, the controller 4 starts to continuously receive the flow data from the flow meter 53. If the flow meter 53 continuously receives the flow data within a certain period of time, such as the set 5 minutes, it indicates that the oil in the collection cylinder 2 is continuously flowing back into the recovery oil tank 5. If the flow meter 53 still receives the flow data after the set maximum threshold time, such as after 30 minutes, it indicates that there is a continuous oil leakage in the collection cylinder 2. At this time, it is convenient to remind the staff to find the cause of the leakage according to the specific situation.

[0026] Reference Figure 1 As shown, a transparent observation window 6 is further provided on the outer wall of the collection cylinder 2. The transparent observation window 6 allows the operator to directly observe the oil level inside the collection cylinder 2 and confirm in real time whether there is an oil leak and the actual situation of the leak. For example, if the proximity switch 31 issues an alarm, but it is found through the transparent observation window 6 that the oil level has not risen significantly, it may be due to a malfunction of the proximity switch 31. At the same time, it is convenient to observe whether the buoyancy ball 23 and the buoyancy rod 22 are moving normally, and whether there are any impurities entangled or obstructed, to ensure that the alarm system itself is working properly.

[0027] Reference Figure 1 As shown, the upper end of the collection cylinder 2 is detachably connected to a cover plate 7. The cover plate 7 can be detachably connected to the collection cylinder 2 by bolts, etc., so that the cover plate 7 can be removed during maintenance to disassemble and replace the filter element body 11.

Claims

1. A device for detecting oil leakage in a lubricating oil-cooled radiator filter element, comprising a filter element body (11) installed on a circulating oil pipe (1) of the radiator body, wherein an oil pump (12) for controlling the circulation of the circulating oil pipe (1) is provided on the circulating oil pipe (1), characterized in that, Also includes; A collection cylinder (2) is provided outside the filter element body (11). The upper end of the collection cylinder (2) is open for collecting the oil leaked from the filter element body (11). A buoyancy rod (22) is slidably connected inside the collection cylinder (2) through a connecting pipe (21). A buoyancy ball (23) is connected to the lower end of the buoyancy rod (22). When the oil level inside the collection cylinder (2) changes, the buoyancy ball (23) drives the buoyancy rod (22) to move up and down. A sensing element (3) is provided at one end of the buoyancy rod (22) located outside the collection cylinder (2). At least two proximity switches (31) that cooperate with the sensing element (3) are installed at different heights via mounting rods (32), and each proximity switch (31) corresponds to a different oil level height to detect the signal when the buoyancy rod (22) rises to different positions; A controller (4) is electrically connected to a proximity switch (31) and is configured to control the corresponding warning state and device action according to the signals received from different proximity switches (31).

2. The oil leakage detection device for a lubricating oil air-cooled radiator filter element according to claim 1, characterized in that, It also includes a primary warning element (301) corresponding to the proximity switch (31) located at the lower position and a senior warning element (302) corresponding to the proximity switch (31) located at the upper position. The primary warning element (301) and the senior warning element (302) are electrically connected to the controller (4). When the controller (4) receives a signal from a different proximity switch (31), it controls the corresponding warning element to issue an alarm. When the senior warning element (302) issues an alarm, the controller (4) shuts down the oil pump (12).

3. The oil leakage detection device for a lubricating oil air-cooled radiator filter element according to claim 1, characterized in that, The lower end of the collection cylinder (2) is connected to the recovery oil tank (5) via an oil drain pipe (51), and the oil drain pipe (51) is equipped with an oil drain valve (52) that is electrically connected to the controller (4).

4. The oil leakage detection device for a lubricating oil air-cooled radiator filter element according to claim 3, characterized in that, The oil drain pipe (51) is equipped with a flow meter (53), and the controller (4) is also configured to detect the oil flow rate through the flow meter (53) after the oil pump (12) stops and the oil drain valve (52) opens. If the oil flow rate is detected to be greater than zero, it indicates that the oil is continuously leaking.

5. The oil leakage detection device for a lubricating oil air-cooled radiator filter element according to claim 1, characterized in that, A transparent observation window (6) is provided on the outer wall of the collection cylinder (2).

6. The oil leakage detection device for a lubricating oil air-cooled radiator filter element according to claim 1, characterized in that, The upper end of the collecting cylinder (2) is detachably connected to a cover plate (7).

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