Leaked oil collecting and recycling device for oil distribution sealing pair performance test

Abstract

The utility model relates to the technical field of hydraulic systems, in particular to a leaked oil collecting and recycling device for an oil distribution sealing pair performance test. And the collecting assembly comprises an oil drainage tank, an oil return opening is formed in the bottom of the oil drainage tank, and the oil return opening is connected with a recycling assembly. According to the utility model, the collecting component is arranged, the leaked hydraulic oil is collected by the oil drainage tank, the hydraulic oil is concentrated inwards by the oil receiving plate, and the hydraulic oil is received by the U-shaped sealing groove, so that external impurities can be prevented from directly falling into the oil drainage tank, the hydraulic oil can be prevented from dripping from two sides of the U-shaped sealing groove, and the flow rate of the hydraulic oil can be reduced; impurities in the hydraulic oil can be precipitated in the U-shaped sealing groove, the precipitated impurities can be discharged from the slag discharging valve, the impurity amount of the hydraulic oil in the oil drainage tank is reduced, secondary filtering is conducted through the oil return opening filter screen, the impurity amount can be reduced, and therefore overhauling of other devices needing to be considered is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic system technical field, concretely is a kind of oil distribution seal pair performance test with oil leakage collection and recovery device. BACKGROUND

[0002] The oil distributor is the core component of the adjustable pitch propeller propulsion system, and is the distribution mechanism of the high and low pressure hydraulic oil of the adjustable pitch propeller device. The oil distributor is installed outside the oil distribution shaft, and dynamic sealing is realized between the two through the sealing pair. The performance of the oil distribution sealing pair needs to be tested and detected.

[0003] In the prior art, hydraulic oil is generally injected into the oil distributor by using a hydraulic system, the leakage amount of the hydraulic oil is detected to measure the performance of the sealing pair, and the oil leakage point is judged. An oil drain tank is usually arranged below the oil distribution shaft, and the leaked hydraulic oil is pumped back to the main oil tank of the hydraulic system by an oil pump to realize the circulation of the hydraulic oil. However, in the experimental process, the friction between the oil distribution shaft, the sealing pair and the oil distributor may generate metal chips or other impurities, and dust and other impurities in the air fall into the open oil drain tank, so that the impurities in the hydraulic oil are too much. Therefore, filters are arranged at the oil inlet and oil outlet of each pump, but the filters need to be checked and replaced frequently to prevent the pump from working. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides an oil leakage collection and recovery device for oil distribution sealing pair performance test.

[0005] The technical scheme of the utility model is as follows:

[0006] An oil leakage collection and recovery device for oil distribution sealing pair performance test, comprising:

[0007] A hydraulic system, the hydraulic system comprises a main oil tank, the main oil tank is used for containing hydraulic oil, a double oil pump is arranged at the top of the main oil tank, the double oil pump is connected with a main oil circuit, the double oil pump is driven by a first motor, and the double oil pump is used for pumping the hydraulic oil in the main oil tank and pumping to the experimental device through the main oil circuit;

[0008] A collection assembly, the collection assembly comprises an oil drain tank, the oil drain tank is used for receiving the leaked hydraulic oil of the oil distribution sealing pair, an impurity precipitation assembly is arranged at the top of the oil drain tank, the impurity precipitation assembly is used for separating impurities and hydraulic oil, and a return oil port is arranged at the bottom of the oil drain tank, and the return oil port is connected with a recovery assembly;

[0009] The recovery assembly comprises a return oil motor, the return oil motor is connected with a return oil pump, and the return oil pump is used for pumping the hydraulic oil in the oil drain tank back to the main oil tank.

[0010] Preferably, the main oil circuit is composed of an electromagnetic overflow valve, an unloading overflow valve and a reversing valve, the oil outlet of the double oil pump is connected with the electromagnetic overflow valve, the electromagnetic overflow valve is connected with the unloading overflow valve, and the unloading overflow valve is connected with the reversing valve.

[0011] Preferably, the impurity precipitation assembly comprises two oil receiving plates, the two oil receiving plates are symmetrically arranged in the top opening of the oil leakage tank, the oil receiving plates are inclined to the middle, a space is reserved between the oil receiving plates, a U-shaped sealing groove is arranged on the outer side of the lower edge of the oil receiving plate, and the upper edge of the U-shaped sealing groove is higher than the lower edge of the oil receiving plate.

[0012] Preferably, a residue discharging valve is connected to the side of the oil leakage tank and located at the end of the U-shaped sealing groove through a pipeline, and the inner side lower edge of the residue discharging valve is flush with the inner side lower edge of the U-shaped sealing groove.

[0013] Preferably, a ventilation pipe is arranged on the side of the oil leakage tank and below the oil receiving plate.

[0014] Preferably, an oil return port filter screen is arranged at the end of the oil return port and in the oil leakage tank.

[0015] Preferably, the recovery assembly further comprises a first liquid level sensor and a second liquid level sensor, the first liquid level sensor and the second liquid level sensor are fixedly arranged on the side of the oil leakage tank and used for detecting the liquid level in the oil leakage tank, and the first liquid level sensor is lower than the second liquid level sensor.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a collecting assembly is arranged, and the hydraulic oil of leakage is collected by the oil leakage tank, the hydraulic oil is concentrated inwards by the oil receiving plate, and the hydraulic oil is received by the U-shaped sealing groove, so that external impurities can be avoided from falling directly into the oil leakage tank, the hydraulic oil can drop from both sides of the U-shaped sealing groove, the flow rate of the hydraulic oil can be reduced, the impurities in the hydraulic oil can be precipitated in the U-shaped sealing groove, the precipitated impurities can be discharged from the residue discharging valve, the impurity amount of the hydraulic oil in the oil leakage tank can be reduced, the oil return port filter screen is used for secondary filtration, the impurity amount can be reduced, and the maintenance of other devices can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the hydraulic system structure schematic diagram in the utility model;

[0020] Figure 3 It is the oil leakage tank structure schematic diagram in the utility model;

[0021] Figure 4 It is the oil leakage tank cross section structure schematic diagram in the utility model;

[0022] Figure 5 It is the structure schematic view of the recycling assembly in the utility model.

[0023] The meaning of each reference numeral in the drawing is as follows:

[0024] 1, hydraulic system; 11, main oil tank; 12, first motor; 13, double oil pump; 14, electromagnetic overflow valve; 15, unloading overflow valve; 16, reversing valve; 17, second motor; 18, low-pressure lubricating pump;

[0025] 2, collecting assembly; 21, oil drain tank; 22, oil receiving plate; 23, U-shaped sealing groove; 24, deslagging valve; 25, ventilation pipe; 26, oil return port; 27, oil return port filter screen;

[0026] 3, recycling assembly; 31, first liquid level sensor; 32, second liquid level sensor; 33, oil return motor; 34, oil return pump. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] Embodiment 1:

[0030] Please refer to Figures 1-5 The above technical solutions are described in detail by the following embodiments of the utility model:

[0031] A kind of oil leakage collecting and recycling device for performance test of oil distribution sealing pair, comprising:

[0032] The hydraulic system 1 comprises a main oil tank 11 for containing hydraulic oil, the top of the main oil tank 11 is provided with a double oil pump 13 connected with a main oil circuit, the double oil pump 13 is driven by a first motor 12, and the double oil pump 13 is used for pumping the hydraulic oil in the main oil tank 11 and pumping to the experimental device through the main oil circuit.

[0033] The experimental device can adopt a horizontal lathe as a power source.

[0034] The double oil pump 13 adopts two independent double constant pumps, and the preferred model is PVR11-23 / 23, the nominal displacement of the front pump is 23ml / r, the nominal displacement of the rear pump is 23.3ml / r, and the working speed is 750-1800r / min. The highest working pressure of the hydraulic pump is 21MPa, when the driving motor rotates at 970r / min, the nominal flow of the front pump is 22.6L / min, and the nominal flow of the rear pump is 22.6L / min.

[0035] The first motor 12 is fixedly installed on the top surface of the main oil tank 11 by bolts, and the input shaft of the double oil pump 13 is clamped with the output shaft of the first motor 12. The first motor 12 preferably adopts a YE3-160L-6 three-phase asynchronous motor with a rated power of 11KW and a rated speed of 970r / min.

[0036] The main oil circuit is composed of an electromagnetic overflow valve 14, an unloading overflow valve 15 and a reversing valve 16, the oil outlet of the double oil pump 13 is connected with the electromagnetic overflow valve 14, the electromagnetic overflow valve 14 is connected with the unloading overflow valve 15, and the unloading overflow valve 15 is connected with the reversing valve 16.

[0037] The preferred model of the electromagnetic overflow valve 14 is BSG-03-2B3B, the preferred model of the unloading overflow valve 15 is HY-Hb10B, and the preferred model of the reversing valve 16 is DSG-03-2B2. The electromagnetic overflow valve 14, the unloading overflow valve 15 and the reversing valve 16 are connected through pipelines.

[0038] The first motor 12 drives the double oil pump 13 to work, pumps the hydraulic oil into the electromagnetic overflow valve 14, adjusts the valve opening of the electromagnetic overflow valve 14, adjusts the output pressure of the double oil pump 13 to meet the working requirements, and then adjusts through the reversing valve 16 to realize the simulation of the distance adjustment requirements.

[0039] When the pressure is too high, the electromagnetic overflow valve 14 plays a role of overflow. At the same time, the unloading overflow valve 15 can automatically release pressure to protect the pipeline.

[0040] The hydraulic system 1 further comprises a second motor 17 fixedly installed on the top surface of the main oil tank 11 by bolts, and the output shaft of the second motor 17 is connected with a low-pressure lubricating pump 18.

[0041] When the second motor 17 is working, the low-pressure lubricating pump 18 can be driven to work to pump lubricating oil.

[0042] The collecting assembly 2 comprises an oil leakage tank 21, the top of the oil leakage tank 21 is provided with an impurity precipitation assembly for separating impurities and hydraulic oil, the bottom of the oil leakage tank 21 is provided with an oil return port 26, and the oil return port 26 is connected with a recycling assembly 3.

[0043] The oil distribution sealing pair switches the working state by using hydraulic pressure, and hydraulic oil is discharged when the working state is switched. The oil leakage tank 21 is used for receiving the hydraulic oil leaked from the oil distribution sealing pair.

[0044] The impurity precipitation assembly comprises two oil receiving plates 22 which are symmetrically installed in the top opening of the oil leakage tank 21 by bolts, the oil receiving plates 22 are inclined to the middle, a space is left between the oil receiving plates 22, and the outer side of the lower edge of the oil receiving plate 22 is provided with a U-shaped sealing groove 23, and the upper edge of the U-shaped sealing groove 23 is higher than the lower edge of the oil receiving plate 22.

[0045] The inclination of the oil receiving plates 22 to the middle can facilitate the collection of hydraulic oil to the middle. The U-shaped sealing groove 23 is welded and installed in the oil leakage tank 21. Since the upper edge of the U-shaped sealing groove 23 is higher than the lower edge of the oil receiving plate 22, the lower edge of the oil receiving plate 22 is submerged in the U-shaped sealing groove 23, thereby playing a sealing role. The U-shaped sealing groove 23 cooperates with the lower edge of the oil receiving plate 22 to increase the path of the hydraulic oil and reduce the flow rate. In the U-shaped sealing groove 23, the impurities in the hydraulic oil precipitate and remain at the bottom of the U-shaped sealing groove 23, and the relatively clean hydraulic oil overflows from the upper edge of the U-shaped sealing groove 23 to both sides.

[0046] The side of the oil leakage tank 21 and the end of the U-shaped sealing groove 23 are connected by a pipeline, and the deslagging valve 24 is arranged in the pipeline.

[0047] The deslagging valve 24 can be a butterfly valve. The deslagging valve 24 is opened regularly to discharge the residual hydraulic oil and impurities in the U-shaped sealing groove 23, so that the impurities are prevented from falling into the oil leakage tank 21.

[0048] The ventilation pipe 25 is welded to the side of the oil leakage tank 21 and below the oil receiving plate 22.

[0049] The ventilation pipe 25 is used to ensure that the air pressure inside and outside the oil leakage tank 21 is the same, so as to facilitate the sliding of the hydraulic oil. An air filter can be arranged at the outer end of the ventilation pipe 25 to prevent external impurities from entering. Not shown in the figure.

[0050] The oil return port 26 is provided with an oil return port filter screen 27 at the end and in the oil leakage tank 21.

[0051] The oil return port filter screen 27 is used to further filter the impurities that are not blocked by the U-shaped sealing groove 23, so as to ensure the cleanliness of the hydraulic oil in the hydraulic system 1.

[0052] The recovery assembly 3 comprises an oil return motor 33, and the oil return motor 33 is connected with an oil return pump 34, and the oil return pump 34 is used for pumping the hydraulic oil in the oil leakage tank 21 back to the main oil tank 11.

[0053] The oil return motor 33 is fixedly installed on the top surface of the main oil tank 11 by bolts, and the output shaft of the oil return motor 33 is clamped with the input shaft of the oil return pump 34. The oil return pump 34 is connected with the oil return port 26 through a pipeline.

[0054] When the oil return motor 33 works, the oil return pump 34 can be driven to work, and the hydraulic oil in the oil leakage tank 21 is pumped out from the oil return port 26 through the pipeline and then is transported back to the main oil tank 11.

[0055] It should be noted that the power of the oil return motor 33 and the oil return pump 34 should be greater than that of the second motor 17 and the low-pressure lubricating pump 18, but should be less than that of the first motor 12 and the double oil pump 13.

[0056] The recovery assembly 3 further comprises a first liquid level sensor 31 and a second liquid level sensor 32, and the first liquid level sensor 31 and the second liquid level sensor 32 are threadedly installed on the side surface of the oil leakage tank 21 and are used for detecting the liquid level in the oil leakage tank 21, and the first liquid level sensor 31 is lower than the second liquid level sensor 32.

[0057] When the hydraulic oil liquid level reaches the second liquid level sensor 32, the oil return motor 33 works, and when the hydraulic oil liquid level falls to the second liquid level sensor 32, the oil return motor 33 stops working.

[0058] When the operator uses the device, the first motor 12 is controlled to work, the first motor 12 drives the double oil pump 13 to work, the hydraulic oil is pumped into the electromagnetic overflow valve 14, the opening degree of the valve port of the electromagnetic overflow valve 14 is adjusted, the output pressure of the double oil pump 13 is adjusted to meet the working requirements, and then the switching valve 16 is adjusted to realize the simulation of the distance adjustment requirements.

[0059] When the working state of the oil distribution sealing pair is switched, the hydraulic oil will leak, and the leaked hydraulic oil will fall onto the oil receiving plate 22, and the hydraulic oil falling onto the oil receiving plate 22 will be collected in the U-shaped sealing groove 23.

[0060] The hydraulic oil in the U-shaped sealing groove 23 will submerge the lower edge of the oil receiving plate 22, and the U-shaped sealing groove 23 cooperates with the lower edge of the oil receiving plate 22 to increase the path of the hydraulic oil and reduce the flow rate. In the U-shaped sealing groove 23, the impurities in the hydraulic oil are precipitated and left at the bottom of the U-shaped sealing groove 23, and the relatively clean hydraulic oil will overflow from the upper edge of the U-shaped sealing groove 23 to both sides.

[0061] When the hydraulic oil level reaches the second liquid level sensor 32, the oil return motor 33 works, when the oil return motor 33 works, the oil return pump 34 can be driven to work, and the hydraulic oil in the oil drain tank 21 is pumped out from the oil return port 26 through the pipeline and transported back to the main oil tank 11.

[0062] The hydraulic oil discharged from the oil return port 26 is further filtered through the oil return port filter screen 27.

[0063] When the hydraulic oil level drops to the second liquid level sensor 32, the oil return motor 33 stops working.

[0064] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An oil leakage collecting and recovering device for performance test of an oil-sealed pair, characterized by comprising: Include: Hydraulic system (1), the hydraulic system (1) includes main oil tank (11), the main oil tank (11) is used for containing hydraulic oil, the main oil tank (11) top is equipped with double oil pump (13), the double oil pump (13) is connected with main oil circuit, the double oil pump (13) is driven by first motor (12), the double oil pump (13) is used for extracting hydraulic oil in main oil tank (11) and is pumped to experimental device through main oil circuit; Collecting assembly (2), the collecting assembly (2) includes oil drain tank (21), the oil drain tank (21) is used for receiving hydraulic oil leaked by oil distribution sealed pair, the oil drain tank (21) top is equipped with impurity precipitation assembly, the impurity precipitation assembly is used for separating impurities and hydraulic oil, the oil drain tank (21) bottom is equipped with oil return port (26), the oil return port (26) is connected with recovery assembly (3); The recovery assembly (3) includes oil return motor (33), the oil return motor (33) is connected with oil return pump (34), and the oil return pump (34) is used for pumping hydraulic oil in the oil drain tank (21) back to the main oil tank (11).

2. The oil leakage collecting and recovering device for performance test of an oil seal pair according to claim 1, characterized in that: The main oil circuit is composed of electromagnetic overflow valve (14), unloading overflow valve (15) and reversing valve (16), the oil outlet of double oil pump (13) is connected with electromagnetic overflow valve (14), electromagnetic overflow valve (14) is connected with unloading overflow valve (15), and unloading overflow valve (15) is connected with reversing valve (16).

3. The oil leakage collecting and recovering device for performance test of an oil seal pair according to claim 1, characterized in that: The impurity precipitation assembly includes two oil receiving plates (22), the two oil receiving plates (22) are symmetrically installed in the top opening of the oil drain tank (21), the oil receiving plates (22) are inclined to the middle, a space is left between the oil receiving plates (22), the outer side of the lower edge of the oil receiving plate (22) is provided with a U-shaped sealing groove (23), and the upper edge of the U-shaped sealing groove (23) is higher than the lower edge of the oil receiving plate (22).

4. The oil leakage collecting and recovering device for performance test of an oil seal pair according to claim 3, characterized in that: The side of the oil drain tank (21) and the end of the U-shaped sealing groove (23) are connected by a pipeline, the inner side of the lower edge of the deslagging valve (24) is flush with the inner side of the lower edge of the U-shaped sealing groove (23).

5. The oil leakage collecting and recovering device for performance test of an oil seal pair according to claim 4, characterized in that: The side of the oil drain tank (21) and below the oil receiving plate (22) are provided with a ventilation pipe (25).

6. An oil leakage collecting and recovering device for performance test of an oil seal pair as set forth in claim 5, characterized in that: The end of the oil return port (26) and in the oil drain tank (21) are provided with an oil return port screen (27).

7. The oil leakage collecting and recovering device for performance test of an oil seal pair according to claim 1, characterized in that: The recovery assembly (3) further includes a first liquid level sensor (31) and a second liquid level sensor (32), the first liquid level sensor (31) and the second liquid level sensor (32) are fixedly installed on the side of the oil drain tank (21), used for detecting the liquid level in the oil drain tank (21), and the first liquid level sensor (31) is lower than the second liquid level sensor (32).

Images