Oil-gas separator of diesel locomotive

Abstract

The utility model provides an oil-gas separator of an internal combustion locomotive, which relates to the field of maintenance equipment for internal combustion engine parts, and comprises a middle cylinder, an upper pipe body and a lower pipe body, a multi-stage filter disc is arranged in the middle cylinder, the upper end of the middle cylinder is communicated with the upper pipe body, and the lower end of the middle cylinder is communicated with the lower pipe body. Each of the upper pipe body and the lower pipe body is a pipe cavity with one open end and the other closed end; according to the oil-gas separator, oil gas can be prevented from escaping into the machine room from the breathing opening in the large top of the machine room through the sealing assembly, then the cleaning work amount of follow-up trainmen is reduced, meanwhile, fire hazards are greatly reduced, and when the filter disc needs to be replaced, the whole oil-gas separator does not need to be disassembled; when the oil-gas separator is used, only the middle cylinder needs to be dragged downwards, the end cover and the upper ventilation plate are taken down in sequence, then the filter disc can be replaced, operation is easy, the workload of maintenance personnel is simplified, and the using effect of the oil-gas separator is better.

Description

Technical Field

[0001] This utility model relates to the field of maintenance equipment for internal combustion engine parts, and more specifically, to an oil-gas separator for internal combustion locomotives. Background Technology

[0002] The diesel engine in the fuel locomotive uses a positive pressure crankcase, which means that the pressure of the oil-gas mixture generated when the diesel engine is working normally is greater than the external air pressure. The positive pressure oil-gas in the crankcase is discharged to the atmosphere through the oil-gas separator, and then the pressure in the crankcase is released, thus ensuring the normal operation of the diesel engine.

[0003] The purpose of an oil-gas separator is to separate engine oil from the fuel-air mixture. Currently, the separation effect of oil-gas separators in diesel locomotives is not significant, and a large amount of grease remains in the separated fuel-air mixture. Furthermore, the seal of the cylindrical breather vent at the top of the separator is not tight, causing some of the fuel-air mixture processed by the separator to escape into the engine room during the discharge process. This not only causes large-scale oil contamination inside the locomotive top, but in severe cases, the engine room can become completely filled with fuel-air mixture. This situation not only increases the cleaning workload for the crew, but more seriously, it poses a significant fire hazard and seriously threatens the safe operation of the locomotive.

[0004] In addition, when replacing the filter element in an existing oil-gas separator, the entire separator needs to be disassembled, which is not only cumbersome but also increases the workload of maintenance personnel. In summary, the above-mentioned problems with oil-gas separators during use urgently need to be solved. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art and to propose an oil-gas separator for internal combustion locomotives.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An oil-gas separator for internal combustion locomotives includes an intermediate cylinder, an upper pipe, and a lower pipe. The intermediate cylinder contains multiple stages of filter elements. The upper end of the intermediate cylinder is connected to the upper pipe, and the lower end of the intermediate cylinder is connected to the lower pipe.

[0008] Both the upper and lower pipes are cavities that are open at one end and closed at the other end, and the outer walls of the ends of the upper and lower pipes are respectively provided with exhaust holes that connect to their internal cavities.

[0009] The upper end of the intermediate cylinder is movably provided with a first mounting component, and the first mounting component is movably connected to the upper pipe body;

[0010] The lower end of the intermediate cylinder is movably connected to the lower tube via the second mounting component to enable the intermediate cylinder to have a spring-back function.

[0011] A sealing assembly is installed on the upper pipe body.

[0012] Furthermore, the first mounting assembly includes an end cap and an upper guide cylinder. The upper end of the intermediate cylinder is threadedly connected to the end cap, and the upper end of the end cap is provided with an upper guide cylinder. The upper guide cylinder communicates with the intermediate cylinder, and the upper tube passes through the upper guide cylinder and is inserted into the intermediate cylinder, with the upper tube and the upper guide cylinder slidingly engaged.

[0013] Furthermore, the first mounting assembly also includes a first spring, an upper vent plate, and a lower vent plate. The first spring is provided between the upper vent plate and the upper wall of the end cap. The lower vent plate is fixed inside the intermediate cylinder. A multi-stage filter is placed between the lower vent plate and the upper vent plate, and ventilation holes are provided on both the lower vent plate and the upper vent plate.

[0014] Furthermore, the second mounting assembly includes a lower guide cylinder, a connecting ring, and a second spring. The lower guide cylinder is provided at the lower end of the intermediate cylinder and is connected to the intermediate cylinder. The lower tube passes through the lower guide cylinder and is inserted into the intermediate cylinder, and the lower tube slides in cooperation with the lower guide cylinder. A connecting ring is provided on the outer wall of the lower tube, and the connecting ring is connected to the lower end of the lower guide cylinder by the second spring.

[0015] Furthermore, the sealing assembly includes a first sealing ring, and a flange is provided on the outer wall of the upper end of the upper tube body. Multiple annular grooves are provided on the outer wall of the flange, and the first sealing ring is installed in the annular grooves.

[0016] Furthermore, the lower end wall of the intermediate cylinder is provided with an oil drain hole, which is connected to the inner cavity of the intermediate cylinder and a sealing plug is installed at the oil drain hole.

[0017] The above solution effectively drains the grease from the inside of the intermediate cylinder through the oil drain hole, and a sealing plug can be used to seal the cylinder when oil draining is not required.

[0018] Furthermore, a guide sleeve is installed inside the inner cavity of the intermediate cylinder. The guide sleeve is connected to the bottom wall of the intermediate cylinder. The guide sleeve and the lower guide cylinder are arranged concentrically, and the upper end of the guide sleeve is located below the exhaust hole of the lower pipe.

[0019] The above-mentioned guide sleeve allows the intermediate cylinder to move only vertically and prevents horizontal displacement during dragging.

[0020] Furthermore, the exhaust port of the upper tube is located in the inner cavity of the upper half of the middle cylinder, and the exhaust port of the lower tube is located in the inner cavity of the lower half of the middle cylinder.

[0021] Furthermore, a second sealing ring is installed between the outer wall of the upper tube and the inner wall of the upper guide cylinder, and a third sealing ring is installed between the outer wall of the lower tube and the inner wall of the lower guide cylinder.

[0022] The above solution can further prevent oil and gas from overflowing during the transfer process in the oil-gas separator by using the second and third sealing rings.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. When the filter needs to be replaced, this utility model eliminates the need to disassemble the entire device. Simply drag the intermediate cylinder downwards, causing the lower guide cylinder to move downwards along the lower tube. This compresses the second spring, separating the end cap from the upper tube, allowing the end cap to be removed. This facilitates the removal of the upper vent plate and filter inside the intermediate cylinder for filter replacement. After filter replacement, the upper vent plate and filter are reinstalled into the intermediate cylinder. The end cap is then reconnected to the intermediate cylinder. Once connected, releasing the end cap allows the second spring to re-align with the upper tube as it recovers its deformation, enabling the upper tube to be reinserted into the upper guide cylinder. The entire process is simple and convenient.

[0025] 2. The upper end of the upper pipe body of this utility model is provided with a flange on the outer wall, and multiple annular grooves are provided on the outer wall of the flange. A first sealing ring is installed in the annular groove. Multiple first sealing rings are provided between the upper pipe body and the cylindrical vent of the locomotive roof, thereby preventing oil and gas from entering the machine room.

[0026] Compared to existing technologies, this device, through its sealing components, prevents oil and gas from escaping from the vent at the top of the engine room into the engine room, thereby reducing the cleaning workload for crew members and significantly reducing the risk of fire. When the filter needs to be replaced, it is not necessary to disassemble the entire oil-gas separator. Simply drag the middle cylinder downwards and then remove the end cap and the upper vent plate to replace the filter. The operation is simple, the workload of maintenance personnel is simplified, and the oil-gas separator performs better. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is an internal sectional view of the present invention;

[0029] Figure label:

[0030] 1. Upper tube body; 101. Annular groove; 102. Exhaust port; 2. End cap; 21. First spring; 3. Intermediate cylinder body; 4. Lower tube body; 5. Upper guide cylinder; 6. Lower guide cylinder; 7. Sealing plug; 8. Upper vent plate; 9. Multi-stage filter; 10. Lower vent plate; 11. Guide sleeve; 12. Connecting ring; 13. Second spring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0032] like Figures 1 to 2 As shown, an oil-gas separator for an internal combustion locomotive includes an intermediate cylinder 3, an upper pipe 1, and a lower pipe 4. The intermediate cylinder 3 is equipped with multiple stages of filter elements 9. The upper end of the intermediate cylinder 3 is connected to the upper pipe 1, and the lower end of the intermediate cylinder 3 is connected to the lower pipe 4.

[0033] Both the upper tube 1 and the lower tube 4 are cavities that are open at one end and closed at the other end. The outer walls of the ends of the upper tube 1 and the lower tube 4 are respectively provided with vent holes 102 that connect to their internal cavities. (In a more detailed design, the vent hole 102 of the lower tube 4 is higher than the lower end wall of the intermediate cylinder 3, the vent hole 102 of the upper tube 1 is located in the upper half of the inner cavity of the intermediate cylinder 3, and the vent hole 102 of the lower tube 4 is located in the lower half of the inner cavity of the intermediate cylinder 3.)

[0034] The upper end of the intermediate cylinder 3 is movably provided with a first mounting component, and the first mounting component is movably connected to the upper pipe 1;

[0035] The lower end of the intermediate cylinder 3 is movably connected to the lower tube 4 through the second mounting assembly so that the intermediate cylinder 3 has a spring-loaded function;

[0036] The upper pipe body 1 is provided with a sealing assembly. Specifically, the sealing assembly includes a first sealing ring. The upper outer wall of the upper pipe body 1 is provided with a flange. The outer wall of the flange is provided with multiple annular grooves 101. The first sealing ring is installed in the annular grooves 101. The first sealing ring can prevent some oil and gas from escaping from the vent at the top of the machine room into the machine room.

[0037] Further refinements of the embodiments of this utility model, such as... Figure 1 and Figure 2 As shown, the first mounting assembly includes an end cap 2 and an upper guide cylinder 5. The upper end of the intermediate cylinder 3 is threadedly connected to the end cap 2. The upper end of the end cap 2 is provided with an upper guide cylinder 5. The upper guide cylinder 5 communicates with the intermediate cylinder 3. The upper tube 1 passes through the upper guide cylinder 5 and is inserted into the intermediate cylinder 3, and the upper tube 1 and the upper guide cylinder 5 are slidably engaged.

[0038] In a further optimization of the above embodiment, the first installation assembly also includes a first spring 21, an upper vent plate 8, and a lower vent plate 10. The first spring 21 is disposed between the upper vent plate 8 and the upper end wall of the end cap 2. The lower vent plate 10 is fixedly disposed inside the intermediate cylinder 3. A multi-stage filter element 9 is placed between the lower vent plate 10 and the upper vent plate 8, and ventilation holes are provided on both the lower vent plate 10 and the upper vent plate 8. It should be noted that there is a certain distance between the upper end of the lower tube 4 and the lower vent plate 10. The first spring 21, the upper vent plate 8, and the lower vent plate 10 can ensure that the multi-stage filter element 9 is pressed between the two vent plates and will not move with the airflow during the filtration process.

[0039] Further refinements of the embodiments of this utility model, such as... Figure 1 and Figure 2 As shown, the second mounting assembly includes a lower guide cylinder 6, a connecting ring 12, and a second spring 13. The lower guide cylinder 6 is provided at the lower end of the intermediate cylinder 3. The lower guide cylinder 6 is connected to the intermediate cylinder 3. The lower tube 4 passes through the lower guide cylinder 6 and is inserted into the intermediate cylinder 3, and the lower tube 4 and the lower guide cylinder 6 are slidably engaged. The connecting ring 12 is provided on the outer wall of the lower tube 4. The connecting ring 12 and the lower end of the lower guide cylinder 6 are connected by the second spring 13.

[0040] Further refinements of the embodiments of this utility model, such as... Figure 1 and Figure 2 As shown, the lower end wall of the intermediate cylinder 3 is provided with an oil drain hole, which is not shown in the figure. The oil drain hole is connected to the inner cavity of the intermediate cylinder 3 and a sealing plug 7 is installed at the oil drain hole.

[0041] Further refinements of the embodiments of this utility model, such as... Figure 1 and Figure 2 As shown, a guide sleeve 11 is installed inside the cavity of the intermediate cylinder 3. The guide sleeve 11 is connected to the bottom wall of the intermediate cylinder 3. The guide sleeve 11 is co-centered with the lower guide cylinder 6 and the upper end of the guide sleeve 11 is located below the exhaust hole 102 of the lower pipe 4. The guide sleeve 11 allows the intermediate cylinder 3 to move only vertically and will not shift horizontally during dragging, thus providing vertical guidance.

[0042] In a further refinement of the embodiment of this utility model, a second sealing ring is installed between the outer wall of the upper pipe body 1 and the inner wall of the upper guide cylinder 5, and a third sealing ring is installed between the outer wall of the lower pipe body 4 and the inner wall of the lower guide cylinder 6; the second and third sealing rings are not shown in the figure; the second and third sealing rings can further prevent the leakage of oil and gas during the transfer process in the oil-gas separator.

[0043] The working process of this utility model is as follows:

[0044] When using this equipment, first connect the lower pipe body 4 to the exhaust port of the positive pressure crankcase through a pipe. The crankcase is not shown in the figure and is existing technology that will not be improved. Then insert the upper pipe body 1 into the cylindrical breather port of the locomotive roof and seal the connection between the two through the first sealing ring. Then, the oil and gas enter the cavity of the intermediate cylinder 3 through the exhaust port 102 of the lower pipe body 4, and then enter the multi-stage filter 9 through the vent on the lower vent plate 10 for filtration. After filtration, it is discharged through the vent of the upper vent plate 8, and then through the exhaust port 102 of the upper pipe body 1, and finally discharged from the cavity of the upper pipe body 1.

[0045] When it is necessary to replace the filter element 9 inside the intermediate cylinder 3, drag the intermediate cylinder 3 downwards, causing the lower guide cylinder 6 to move downwards along the lower tube 4. This will compress the second spring 13, causing the end cap 2 to separate from the upper tube 1, allowing the end cap 2 to be removed. After removing the end cap 2, the upper vent plate 8 and filter element 9 inside the intermediate cylinder 3 can be easily removed, and the filter element 9 replacement process can then begin. After the filter element 9 is replaced, the upper vent plate 8 and filter element 9 are reinstalled into the intermediate cylinder 3, and then the end cap 2 is reconnected to the intermediate cylinder 3. Once connected, release the end cap 2, and as the second spring 13 returns to its original deformation, the end cap 2 will reconnect with the upper tube 1, and the oil and gas filtration process can then continue.

[0046] Compared to existing technologies, this device, through its sealing components, prevents oil and gas from escaping from the vent at the top of the engine room into the engine room, thereby reducing the cleaning workload for crew members and significantly reducing the risk of fire. When the filter needs to be replaced, it is not necessary to disassemble the entire oil-gas separator. Simply drag the middle cylinder downwards and then remove the end cap and the upper vent plate to replace the filter. The operation is simple, the workload of maintenance personnel is simplified, and the oil-gas separator performs better.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil-gas separator for an internal combustion locomotive, comprising an intermediate cylinder (3), an upper pipe (1), and a lower pipe (4), wherein the intermediate cylinder (3) is provided with multi-stage filter plates (9), the upper end of the intermediate cylinder (3) is connected to the upper pipe (1), and the lower end of the intermediate cylinder (3) is connected to the lower pipe (4), characterized in that, Both the upper tube (1) and the lower tube (4) are open at one end and closed at the other end, and the outer walls of the upper tube (1) and the lower tube (4) are respectively provided with exhaust holes (102) that connect to their internal cavities. The upper end of the intermediate cylinder (3) is movably provided with a first mounting component and the first mounting component is movably connected to the upper pipe (1); The lower end of the intermediate cylinder (3) is movably connected to the lower tube (4) through the second mounting component so that the intermediate cylinder (3) has a spring-back function; A sealing assembly is provided on the upper pipe body (1).

2. The oil-gas separator for internal combustion locomotives according to claim 1, characterized in that, The first installation component includes an end cap (2) and an upper guide cylinder (5). The upper end of the intermediate cylinder (3) is threadedly connected to the end cap (2). The upper end of the end cap (2) is provided with an upper guide cylinder (5). The upper guide cylinder (5) is connected to the intermediate cylinder (3). The upper tube (1) passes through the upper guide cylinder (5) and is inserted into the intermediate cylinder (3), and the upper tube (1) and the upper guide cylinder (5) slide together.

3. The oil-gas separator for internal combustion locomotives according to claim 2, characterized in that, The first mounting assembly also includes a first spring (21), an upper vent plate (8) and a lower vent plate (10). The first spring (21) is provided between the upper vent plate (8) and the upper end wall of the end cap (2). The lower vent plate (10) is fixed inside the intermediate cylinder (3). A multi-stage filter (9) is placed between the lower vent plate (10) and the upper vent plate (8), and ventilation holes are provided on both the lower vent plate (10) and the upper vent plate (8).

4. The oil-gas separator for internal combustion locomotives according to claim 2, characterized in that, The second mounting assembly includes a lower guide cylinder (6), a connecting ring (12), and a second spring (13). The lower guide cylinder (6) is provided at the lower end of the intermediate cylinder (3). The lower guide cylinder (6) is connected to the intermediate cylinder (3). The lower tube (4) passes through the lower guide cylinder (6) and is inserted into the intermediate cylinder (3). The lower tube (4) and the lower guide cylinder (6) are slidably engaged. The connecting ring (12) is provided on the outer wall of the lower tube (4). The connecting ring (12) and the lower end of the lower guide cylinder (6) are connected by the second spring (13).

5. The oil-gas separator for internal combustion locomotives according to claim 1, characterized in that, The sealing assembly includes a first sealing ring. The upper outer wall of the upper tube (1) is provided with a flange, and the outer wall of the flange is provided with a plurality of annular grooves (101). The first sealing ring is installed in the annular grooves (101).

6. The oil-gas separator for internal combustion locomotives according to claim 1, characterized in that, The lower end wall of the intermediate cylinder (3) is provided with an oil drain hole, which is connected to the inner cavity of the intermediate cylinder (3) and a sealing plug (7) is installed at the oil drain hole.

7. The oil-gas separator for internal combustion locomotives according to claim 4, characterized in that, A guide sleeve (11) is installed inside the cavity of the intermediate cylinder (3). The guide sleeve (11) is connected to the bottom wall of the intermediate cylinder (3). The guide sleeve (11) and the lower guide cylinder (6) are arranged in the same circle, and the upper end of the guide sleeve (11) is located below the exhaust hole (102) of the lower tube (4).

8. The oil-gas separator for internal combustion locomotives according to claim 1, characterized in that, The exhaust port (102) of the upper tube (1) is located in the upper half of the inner cavity of the middle cylinder (3), and the exhaust port (102) of the lower tube (4) is located in the lower half of the inner cavity of the middle cylinder (3).

9. A diesel locomotive oil-gas separator according to claim 4, characterized in that, A second sealing ring is installed between the outer wall of the upper tube (1) and the inner wall of the upper guide cylinder (5), and a third sealing ring is installed between the outer wall of the lower tube (4) and the inner wall of the lower guide cylinder (6).

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