A portable vacuum oiling device

Abstract

The utility model provides a portable vacuumizing and oiling device relates to vacuum pressure control technical field, include: box, be provided with vacuumizing system, oiling system, control system and product interface in the box, the product interface is connected with vacuumizing system and oiling system through pipeline simultaneously, control system respectively with vacuumizing system and oiling system electric connection, through the product interface can external required test product, then through control system can control respectively to experimental product carries out vacuumizing and carries out oiling, therefore, need not to pull down the connecting place after vacuumizing, insert the oiling pipe, avoid the air into the product blind cavity that has been extracted as vacuum, lead to the vacuum degree drop, destroyed the effect of vacuumizing in advance, thereby directly influence the purity of final oiling liquid, introduce the uncertainty error for test result, in addition, two sets of systems concentrate in a box, convenient to carry and transport.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pressure control technology, and in particular to an experimental device for high-vacuum and precise pressure control filling of products for field testing. Background Technology

[0002] In field tests in aerospace, military, and other fields, it is often necessary to evacuate the test products (such as hydraulic systems, precision bearing cavities, etc.) before injecting specific oils. This operation aims to remove air from the blind cavities, ensuring that the injected oil is pure and free of air bubbles, thereby meeting the performance requirements of the product under high-standard operating conditions.

[0003] Currently, when conducting the aforementioned vacuuming and constant-pressure quantitative oil injection tests in the field, two independent equipment units are commonly used: first, a separate vacuum pump is used to evacuate the product, then the vacuum pump is disconnected, and then a separate constant-pressure quantitative oil injection device is connected for oil injection. This traditional split-operation mode requires test personnel to carry and manage two independent functional units, which not only increases the overall weight and volume of the equipment, but also inevitably allows air to enter the vacuumed product cavity during the switching connection process, causing a decrease in vacuum level and compromising the effectiveness of the previous vacuuming. This directly affects the purity of the final injected oil, introducing uncertainty errors into the test results. Summary of the Invention

[0004] This invention proposes a portable vacuuming and oil injection device, which aims to solve the problem that existing operating modes require test personnel to carry and manage two independent functional units, and that during the switching and connection of the two equipment units, air inevitably enters the blind cavity of the product that has been evacuated, resulting in a decrease in vacuum.

[0005] This utility model provides a portable vacuuming and oiling device, characterized in that the device has a box-like structure, with a product interface inside the box, which is connected to the test product outside the box. The product interface is connected to both the vacuuming system and the oiling system inside the box via pipelines. The control system is electrically connected to both the vacuuming system and the oiling system.

[0006] Furthermore, the vacuum system connects the waste liquid collection tank to the vacuum solenoid valve via pipelines and a vacuum pressure sensor. The vacuum solenoid valve is connected to the product interface via pipelines. The other end of the waste liquid collection tank is connected to the vacuum generator via pipelines and an oil removal filter.

[0007] Furthermore, the oil filling system is a filling tank connected to a power source filling pump via pipeline; the power source filling pump is connected to the product interface via pipeline, solenoid valve, pressure sensor, flow sensor, and pipeline.

[0008] Furthermore, the oil injection system is also equipped with a pressure control component. One end of the pressure control component is connected to the oil tank, and the other end is connected to the power source injection pump and the flow sensor through a pipeline and an oil injection pressure gauge.

[0009] Furthermore, a filter is installed between the flow sensor and the power source filling pump; a first liquid level alarm device is installed on the filling tank.

[0010] Furthermore, a second liquid level alarm device and a vacuum breaking device are installed on the waste liquid collection tank; a vacuum pressure gauge is installed between the vacuum pressure sensor and the waste liquid collection tank.

[0011] Furthermore, the case is an industrial trolley case.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] Because aerospace and military testing requires technicians to carry equipment for field tests, this utility model uses an industrial trolley case made of wear-resistant and corrosion-resistant polytetrafluoroethylene (PTFE) as the carrying container. This container is characterized by high strength, corrosion resistance, and light weight, while also being convenient for transportation by high-speed rail and airplane. It is suitable for field test sites with corrosive conditions, such as at sea. At the same time, the vacuum system and oil injection system inside the container are integrated into one container and are automatically controlled, enabling the completion of two tests, vacuuming and constant pressure quantitative injection, in a single operation, thus improving test efficiency and accuracy. Attached Figure Description

[0014] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0015] Figure 1 This is a schematic diagram of the portable vacuum oil injection device of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model.

[0017] In the diagram: 1. Power source filling pump; 2. Filter; 3. Flow sensor; 4. Pressure sensor; 5. Solenoid valve; 6. Oil filling pressure gauge; 7. Pressure control assembly; 8. First liquid level alarm device; 9. Vacuum solenoid valve; 10. Vacuum pressure sensor; 11. Vacuum pressure gauge; 12. Second liquid level alarm device; 13. Vacuum breaking device; 14. Oil removal filter; 15. Vacuum generator; 16. Filling tank; 17. Waste liquid collection tank; 18. Product interface; 19. Solid-state mobile power supply UPS; 20. Cabinet. Detailed Implementation

[0018] The exemplary embodiments disclosed in this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0019] This utility model provides a portable vacuum oil injection device, such as... Figures 1-2 As shown, it includes: a housing 20, which houses a vacuum system, an oil injection system, a control system, and a product interface 18; the product interface 18 is connected to both the vacuum system and the oil injection system via pipelines; the control system is electrically connected to both the vacuum system and the oil injection system.

[0020] In this way, the required test products can be connected externally through the product interface 18, and the control system can control the vacuuming and oiling of the test products respectively. Therefore, it is not necessary to disconnect the connection after vacuuming and then insert the oiling pipe, which avoids air entering the blind cavity of the product that has been evacuated, causing the vacuum degree to drop, destroying the effect of the previous vacuuming, and thus directly affecting the purity of the final oil, introducing uncertainty error into the test results. In addition, the two systems are integrated in one box 20, which is convenient for carrying and transportation.

[0021] Specifically, the vacuum system includes: a vacuum generator 15, a vacuum pressure sensor 10, an oil removal filter 14, a vacuum pressure gauge 11, a vacuum solenoid valve 9, a vacuum breaking device 13, a liquid level alarm device, and a waste liquid collection tank 17; the product interface 18 is connected to one end of the waste liquid collection tank 17 via pipelines, the vacuum solenoid valve 9, the vacuum pressure gauge 11, and the vacuum pressure sensor 10; the other end of the waste liquid collection tank 17 is connected to the vacuum generator 15 via pipelines and the oil removal filter 14; the waste liquid collection tank 17 is equipped with a liquid level alarm device and a vacuum breaking device 13.

[0022] In this way, when vacuuming, vacuum solenoid valve 9 opens and solenoid valve 5 closes; this is equivalent to product interface 18 being directly connected to waste liquid collection tank 17. At this time, vacuum generator 15 is connected to the upper port of waste liquid collection tank 17 through oil removal filter 14, which can evacuate waste liquid collection tank 17. The residual waste liquid in the test product can be absorbed into waste liquid collection tank 17, avoiding contamination of vacuum generator 15. At the same time, vacuum pressure sensor 10 is set to measure the vacuum degree in real time.

[0023] It should be noted that the vacuum breaking device 13 is a well-known technology in the field, and its function is to release the vacuum state of the system by introducing atmospheric air. Any existing component that can achieve this function is applicable, so its specific structure will not be described in detail.

[0024] Specifically, the oil filling system includes: a power source filling pump 1, a filter 2, a pressure control component 7, a flow sensor 3, a pressure sensor 4, a solenoid valve 5, an oil filling tank 16, and a liquid level alarm device; the product interface 18 is connected to the power source filling pump 1 through pipelines, solenoid valve 5, pressure sensor 4, flow sensor 3, and filter 2; the power source filling pump 1 is connected to the oil filling tank 16 through pipelines; and a liquid level alarm device is installed on the oil filling tank 16.

[0025] Optionally, both the first liquid level alarm device 8 and the second liquid level alarm device 12 are liquid level sensors. When the liquid level is detected to be lower or higher than a preset threshold range, an alarm signal is triggered to prompt the staff to replenish the corresponding oil tank or clean up the waste liquid.

[0026] Specifically, the oil injection system is also equipped with a pressure control component 7. One end of the pressure control component 7 is connected to the oil filling tank 16 through a pipeline, and the other end is connected between the power source filling pump 1 and the filter 2 through a pipeline and an oil injection pressure gauge 6.

[0027] In this way, when adding oil, the power source filling pump 1 will fill the oil tank 16 with oil, which will then pass through the filter 2, flow sensor 3, and solenoid valve 5 into the test product; the flow sensor 3 can quantitatively measure the amount of oil added; the pressure sensor 4 can detect the filling pressure, and the pressure control component 7 can adjust the filling pressure, thus achieving constant pressure and quantitative oil filling of the test product.

[0028] It should be noted that the pressure control component 7 is a well-known technology in the field. It is used to regulate and stabilize the pressure output by the power source filling pump 1 to a set value. Any existing pressure control element that can achieve this function can be used here. Given that its technology is a mature existing technology, its specific structure and working principle will not be described in detail.

[0029] Specifically, the case 20 is an industrial trolley case, which facilitates the transportation and carrying of the two systems. The case 20 can be made of wear-resistant and corrosion-resistant polytetrafluoroethylene material. This case 20 has the characteristics of high strength, corrosion resistance, and light weight, and is also convenient for high-speed rail and air transport. It is suitable for field test sites with corrosive conditions such as at sea.

[0030] Specifically, the control system includes: an integrated control and display screen, a solid-state mobile power supply UPS 19, and a voltage conversion device; the integrated control and display screen, the solid-state mobile power supply UPS 19, and the voltage conversion device are electrically connected; the integrated control and display screen is electrically connected to the power source filling pump 1, the flow sensor 3, the pressure sensor 4, the solenoid valve 5, the pressure control component 7, the second liquid level alarm device 12, the vacuum solenoid valve 9, the vacuum pressure sensor 10, the first liquid level alarm device 8, the vacuum breaking device 13, and the vacuum generator 15, respectively.

[0031] In this way, the solid-state mobile power supply UPS19 voltage conversion device provides a stable and uninterrupted power supply for the entire device, ensuring independent and reliable operation in outdoor environments without external power. The integrated control and display screen serves as the human-machine interface. On the one hand, it receives and displays signals from the data acquisition system, including the flow sensor 3, pressure sensor 4, and vacuum pressure sensor 10, in real time, enabling operators to monitor key parameters such as the vacuum level during vacuuming and the pressure and flow rate of oil injection throughout the process. On the other hand, operators can input commands such as target vacuum level, target oil injection pressure, and oil injection volume through this screen, and the control system will then respond accordingly. Commands and real-time sensor feedback output control signals to automatically drive the start and stop of the vacuum generator 15 and the power source injection pump 1, and precisely control the actions of actuators such as the vacuum solenoid valve 9, the oil injection solenoid valve 5, the vacuum breaking device 13, and the pressure control component 7. Through this centralized and automated electronic control method, seamless connection and precise control of the two processes of vacuuming and constant pressure and quantitative oil injection are achieved within a single device. Operators only need to connect the product once to complete all operations sequentially through the control system, fundamentally avoiding the problem of air intrusion caused by changing equipment midway, and significantly improving the accuracy, safety, and efficiency of field tests.

[0032] Implementation process: Vacuuming process: The vacuum solenoid valve 9 of the product interface 18 is opened and the solenoid valve 5 is closed; this is equivalent to the product interface 18 being directly connected to the waste liquid collection tank 17; the vacuum generator 15 is connected to the upper port of the waste liquid collection tank 17 through the oil removal filter 14; the waste liquid collection tank 17 can be evacuated, and the residual waste liquid in the test product can be absorbed into the waste liquid collection tank 17 to avoid contaminating the vacuum generator 15. At the same time, a vacuum pressure sensor 10 is set to measure the vacuum degree in real time.

[0033] Constant pressure and quantitative filling process: When filling oil, the power source filling pump 1 fills the oil tank 16, and the oil passes through the filter 2, flow sensor 3, and solenoid valve 5 into the test product; the flow sensor 3 can quantitatively measure the amount of oil filled; the pressure sensor 4 detects the filling pressure, and the pressure control component 7 can adjust the filling pressure, so as to realize constant pressure and quantitative filling of oil into the test product.

[0034] End procedure: After completing the quantitative and pressure-controlled filling, close the vacuum solenoid valve 9 and solenoid valve 5; disconnect the product interface 18 from the test product, open the vacuum breaking device 13 to eliminate the negative pressure in the device; turn off the device power supply to complete the test.

[0035] It should be noted that the specific models and specifications of the integrated control and display screen, power source filling pump 1, flow sensor 3, pressure sensor 4, solenoid valve 5, pressure control component 7, second liquid level sensor 12, vacuum solenoid valve 9, vacuum pressure sensor 10, first liquid level sensor 8, vacuum breaking device 13, and vacuum generator 15 need to be selected and determined according to the actual specifications of the device, and its internal structure is existing technology.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A portable vacuum oil injection device, characterized in that, The device has a box (20) structure, with a product interface (18) on the box (20). The product interface (18) is connected to the test product outside the box (20). The product interface (18) is connected to the vacuum system and oil injection system inside the box (20) through pipelines. The control system is electrically connected to both the vacuum system and the oil injection system.

2. The portable vacuum oil injection device according to claim 1, characterized in that, The vacuum system is a waste liquid collection tank (17) connected to a vacuum solenoid valve (9) via a pipeline and a vacuum pressure sensor (10). The vacuum solenoid valve (9) is connected to the product interface (18) via a pipeline. The other end of the waste liquid collection tank (17) is connected to the vacuum generator (15) via a pipeline and an oil removal filter (14).

3. The portable vacuum oil injection device according to claim 1, characterized in that, The oil filling system is an oil filling tank (16) connected to a power source filling pump (1) via a pipeline; the power source filling pump (1) is connected to a product interface (18) via a pipeline, a solenoid valve (5), a pressure sensor (4), a flow sensor (3).

4. The portable vacuum oil injection device according to claim 3, characterized in that, The oil injection system is also equipped with a pressure control component (7). One end of the pressure control component (7) is connected to the oil tank (16), and the other end is connected between the power source injection pump (1) and the flow sensor (3) through a pipeline and an oil injection pressure gauge (6).

5. A portable vacuum oil injection device according to claim 3, characterized in that, A filter (2) is provided between the flow sensor (3) and the power source injection pump (1); The oil tank (16) is equipped with a first liquid level alarm device (8).

6. A portable vacuum oil injection device according to claim 2, characterized in that, The waste liquid collection tank (17) is equipped with a second liquid level alarm device (12) and a vacuum breaking device (13). A vacuum pressure gauge (11) is installed between the vacuum pressure sensor (10) and the waste liquid collection tank (17).

7. A portable vacuum oil injection device according to claim 1, characterized in that, The case (20) is an industrial trolley case.

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