Pressure-stabilizing oil supply system for test bench

Abstract

The utility model relates to a pressure-stabilized oil supply system for a test bench, and the system comprises an oil storage system which comprises an oil pumping pipeline, an oil storage device, and a pneumatic electromagnetic valve, and is used for storing oil; the pneumatic oil pumping system is connected with an oil pumping pipeline of the oil product storage system, comprises a pneumatic oil supply pump, a pneumatic pump oil outlet pipeline, an air pressure regulating valve, a backflow regulating valve, a backflow pipeline and a compressed air source, and is used for conveying oil products; the electric oil pumping pressure stabilizing system is connected with the pneumatic pump oil outlet pipeline, comprises an electric oil delivery pump, an electric pump oil outlet pipeline, an oil return regulating valve, an oil return pipeline, a pressure gauge, a pressure regulating valve and an oil consumption meter, and is used for stabilizing oil supply pressure. According to the technical scheme, the stable-pressure oil supply system of the test bench can realize non-stop stable-pressure oil supply of the test bench by controlling the pneumatic electromagnetic valve on the oil pumping pipeline to be switched on and off.

Description

Technical Field

[0001] The utility model belongs to the field of engine bench testing, and in particular relates to a pressure-stabilizing oil supply system for a test bench. Background Art

[0002] With the continuous tightening of emission regulations and the continuous development of engine technology, the requirements for oil products are becoming increasingly stringent. Engine bench testing is one of the most direct and effective ways to examine the compatibility of oil products with engines.

[0003] Oil bench testing differs from other tests. Firstly, the volume and number of each test oil sample are relatively small, considering the selection of multiple oil formulations. Furthermore, during the test, oil changes are frequent due to performance comparisons. Large storage devices such as oil tanks are difficult to use, and oil changes are time-consuming and labor-intensive, requiring downtime. Secondly, traditional methods such as electric pumps and pneumatic diaphragm pumps provide high fuel pressures with poor stability. The high-precision fuel consumption meters installed on engine benches have strict requirements for oil pressure supply, making it prone to malfunctions and downtime during oil product switching, reducing test efficiency. Therefore, it is necessary to develop a fuel supply system that can change oil without stopping the machine and provide stable oil pressure. Utility Model Content

[0004] The technical problem addressed by this disclosure is to provide a pressure-stabilized oil supply system for a test bench. This system utilizes a pneumatic oil pumping system and an electric oil pumping pressure-stabilizing system to stabilize the oil supply pressure, meeting the test bench's testing requirements without shutting down. Furthermore, the system can switch between different oil types by controlling the opening and closing of a pneumatic solenoid valve.

[0005] In order to achieve the above-mentioned purpose, the test bench pressure-stabilizing oil supply system provided by the present disclosure includes an oil storage system, a pneumatic oil pump system, and an electric oil pump pressure-stabilizing system, wherein:

[0006] The oil storage system includes an oil storage device, an oil extraction pipeline and a pneumatic solenoid valve;

[0007] The pneumatic oil pump system is connected to the oil extraction pipeline of the oil storage system and is used to transport oil products. It includes a pneumatic oil supply pump, a pneumatic pump oil outlet pipeline, an air pressure regulating valve, a reflux regulating valve, a reflux pipeline and a compressed air source;

[0008] The electric pump oil pressure stabilization system is connected to the pneumatic pump oil outlet pipeline and is used to stabilize the oil supply pressure. It includes an electric oil pump, an electric pump oil outlet pipeline, an oil return regulating valve, an oil return pipeline, a pressure gauge, a pressure regulating valve and a fuel consumption meter.

[0009] Preferably, the oil storage device is one or more oil storage barrels with adjustable size, each oil storage barrel is equipped with a separate oil extraction pipeline, each oil extraction pipeline is provided with a pneumatic solenoid valve, and all oil extraction pipelines are connected in parallel to the inlet of the pneumatic oil supply pump.

[0010] Preferably, the end of the oil extraction pipeline is a metal tube with holes in the side wall. The outer diameter of the metal tube is not larger than the opening diameter of the oil storage barrel, and the number of holes can be one or more.

[0011] Furthermore, the oil outlet pipeline of the pneumatic pump is divided into two, one pipeline is connected to the inlet of the electric oil pump, and the other pipeline is connected to the oil inlet of the pneumatic oil supply pump, and a reflux regulating valve is provided on the pipeline.

[0012] Preferably, the pneumatic pump oil system is further provided with an oil-water separator, and the compressed air source is connected to the air inlet of the pneumatic oil supply pump via the air pressure regulating valve and the oil-water separator in sequence.

[0013] Furthermore, the oil outlet pipeline of the electric pump is divided into two, one pipeline is connected to the pressure gauge, and the other oil return pipeline is connected to the inlet of the electric oil pump.

[0014] Preferably, a heat dissipation ring is wound around the outside of the oil return pipeline.

[0015] Through the above technical scheme, the test bench pressure-stabilizing oil supply system can realize the switching of different oil products by controlling the switching of the pneumatic solenoid valves on different oil extraction pipelines; the compressed air source pressure is adjusted by the air pressure regulating valve in the pneumatic pump oil system, and the oil return volume is controlled by the reflux regulating valve to realize oil delivery control; the oil return volume is controlled by the return oil regulating valve in the electric pump oil pressure-stabilizing system, and the heat dissipation ring outside the return pipeline is used to dissipate heat for the returning oil, reduce the oil temperature, and prevent the oil from overheating; by adjusting the pressure regulating valve, the fuel pressure at the inlet of the fuel consumption meter can be controlled to meet the use requirements of the fuel consumption meter and ensure that the oil supply process is carried out without stopping.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is an overall schematic diagram of the system of the utility model.

[0019] Figure 2 It is a structural diagram of a preferred embodiment of the system of the utility model.

[0020] Figure 3 This is a schematic diagram of the port on the oil storage device side of the oil extraction pipeline in the utility model system.

[0021] Description of Reference Numerals

[0022] 1-Oil extraction pipeline; 2-Oil storage device; 3-Pneumatic solenoid valve; 4-Pneumatic oil supply pump; 5-Pneumatic pump oil outlet pipeline; 6-Oil-water separator; 7-Air pressure regulating valve; 8-Return regulating valve; 9-Return pipeline; 10-Electric oil pump; 11-Electric pump oil outlet pipeline; 12-Return oil regulating valve; 13-Return oil pipeline; 14-Heating ring; 15-Pressure gauge; 16-Pressure regulating valve; 17-Fuel consumption meter. DETAILED DESCRIPTION

[0023] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0024] In this disclosure, unless otherwise indicated, directional terms such as "inner" and "outer" refer to the inner and outer parts of the corresponding component outlines. Furthermore, it should be noted that the use of terms such as "first" and "second" is intended to distinguish one element from another and does not imply order or importance. Furthermore, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same element.

[0025] like Figures 1 to 3 As shown, the present disclosure provides a test bench pressure-stabilized oil supply system, which includes: an oil storage system, including an oil extraction pipeline 1, an oil storage device 2, and a pneumatic solenoid valve 3; a pneumatic oil pumping system, connected to the oil extraction pipeline 1 of the oil storage system, including a pneumatic oil supply pump 4, a pneumatic pump oil outlet pipeline 5, an air pressure regulating valve 7, a return flow regulating valve 8, a return flow pipeline 9, and a compressed air source; and an electric pump oil pressure-stabilizing system, connected to the pneumatic pump oil outlet pipeline 5, including an electric oil delivery pump 10, an electric pump oil outlet pipeline 11, an oil return regulating valve 12, an oil return pipeline 13, a pressure gauge 15, a pressure regulating valve 16, and an oil consumption meter 17. The electric oil delivery pump 10 is driven by a low-voltage DC power supply of less than 36 volts.

[0026] Through the above technical scheme, the test bench pressure-stabilized oil supply system can realize the switching of different oil products by controlling the switch of the pneumatic solenoid valve 3 on the oil extraction pipeline 1; the air pressure regulating valve 7 in the pneumatic pump oil system is used to adjust the compressed air source pressure to realize oil product delivery control; the reflux regulating valve 8 in the pneumatic pump oil system is used to control the oil return volume in the return pipeline 9 to stabilize the pressure of the pipeline during oil product delivery; the return oil regulating valve 12 in the electric pump oil pressure-stabilizing system is used to control the oil reflux volume in the return oil pipeline 13 to further stabilize the pressure of the pipeline during oil product delivery, and at the same time, the heat dissipation ring 14 outside the return oil pipeline 13 is used to dissipate heat for the reflux oil, reduce the oil temperature, and prevent the oil from overheating; by adjusting the pressure regulating valve 16, the fuel pressure at the inlet of the fuel consumption meter is controlled to meet the use requirements of the fuel consumption meter and ensure that the oil supply process is carried out without stopping.

[0027] It should be noted that the provision of two circulation pipelines is conducive to maintaining the stability of the test bench oil supply system pressure. That is, in the pneumatic pump oil system, the pneumatic pump oil outlet pipeline 5 is divided into two, one pipeline is connected to the inlet of the electric oil pump 10, and the other pipeline is connected to the oil inlet of the pneumatic oil supply pump 4. A reflux regulating valve 8 is provided on the pipeline; in the electric pump oil pressure stabilization system, the electric pump oil outlet pipeline 11 is divided into two, one pipeline is connected to the pressure gauge 15, and the other return oil pipeline is connected to the inlet of the electric oil pump. At the same time, in order to prevent water vapor in the compressed air source from entering the test bench and affecting the test results, an oil-water separator 6 is preferably provided in the pneumatic pump oil system. The compressed air passes through the oil-water separator 6 before entering the pneumatic oil supply pump 4.

[0028] In order to achieve fast switching of different oil products, such as Figure 2 As shown, in an exemplary embodiment of the present disclosure, the oil storage device is one or more oil storage barrels with adjustable sizes. Each oil storage barrel is equipped with a separate oil extraction pipeline. Each oil extraction pipeline is provided with a pneumatic solenoid valve. All oil extraction pipelines are connected in parallel to the inlet of the pneumatic oil supply pump to control the transportation of oil in different oil storage barrels and facilitate the switching of different oil products.

[0029] In order to prevent the oil pipeline port from settling at the bottom of the oil storage barrel due to gravity during oil transportation, thereby causing oil transportation interruption, such as Figure 3 As shown, the end of the oil extraction pipeline of the test bench pressure-stabilizing oil supply system in the present disclosure is a metal tube with a hole in the side wall, preferably a stainless steel tube. The number of holes can be one or more. The oil enters the oil extraction pipeline from the side wall opening, overcoming the oil supply interruption caused by the opening being set at the end of the oil extraction pipeline under the action of gravity.

[0030] It should be noted that the outer diameter of the oil extraction pipeline is not larger than the opening diameter of the oil storage barrel, ensuring that the oil extraction pipeline 1 can be inserted below the oil liquid level in the oil storage barrel to ensure the normal oil transportation process.

[0031] The test bench pressure-stabilizing oil supply system disclosed in the present invention is further described below through a specific embodiment.

[0032] Figure 2 It is a schematic diagram of a test bench pressure-stabilizing oil supply system of an exemplary embodiment of the present invention, which includes an oil storage system consisting of three oil storage barrels, a pneumatic oil pump system and an electric oil pump pressure-stabilizing system.

[0033] First, use the fuel in the first oil storage barrel to conduct a test. Insert the oil extraction pipe corresponding to the first oil storage barrel into the first oil storage barrel, open the pneumatic solenoid valve on the oil extraction pipeline, close the pneumatic solenoid valves on the oil extraction pipelines corresponding to other oil storage barrels, open the air pressure regulating valve 7 and adjust the air supply pressure, power the electric oil transfer pump 10 with 12V DC power, adjust the opening of the reflux regulating valve 8 and the return oil regulating valve 12, and adjust the pressure regulating valve 16 according to the pressure indicated by the front end of the fuel consumption meter to meet the fuel supply pressure requirements of the fuel consumption meter;

[0034] When the fuel needs to be replaced with the fuel in the second oil storage barrel, insert the oil extraction pipe corresponding to the second oil storage barrel into the second oil storage barrel, open the pneumatic solenoid valve on the oil extraction pipeline, and close the pneumatic solenoid valves on the oil extraction pipelines corresponding to other oil storage barrels to complete the fuel replacement.

[0035] The pipeline pressure can be fine-tuned by the pressure regulating valve 16 to meet the fuel supply demand of the fuel consumption meter.

[0036] The above operations can realize the non-stop and stable oil supply of the test bench.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A test bench pressure stabilizing oil supply system, characterized in that: The test bench pressure-stabilized oil supply system includes: an oil storage system, a pneumatic oil pump system, and an electric oil pump pressure-stabilized system, wherein: The oil storage system comprises an oil extraction pipeline (1), an oil storage device (2) and a pneumatic solenoid valve (3); The pneumatic oil pump system is connected to the oil extraction pipeline (1) of the oil storage system, and includes a pneumatic oil supply pump (4), a pneumatic pump oil outlet pipeline (5), an air pressure regulating valve (7), a reflux regulating valve (8), a reflux pipeline (9) and a compressed air source; The electric pump oil pressure stabilizing system is connected to the pneumatic pump oil outlet pipeline (5), and comprises an electric oil delivery pump (10), an electric pump oil outlet pipeline (11), an oil return regulating valve (12), an oil return pipeline (13), a pressure gauge (15), a pressure regulating valve (16) and an oil consumption meter (17).

2. The oil supply system according to claim 1, characterized in that: The oil storage device (2) is one or more oil storage barrels with adjustable volumes, each of which is equipped with an oil extraction pipeline. Each oil extraction pipeline is provided with a pneumatic solenoid valve, and all the oil extraction pipelines are connected in parallel to the inlet of the pneumatic oil supply pump.

3. The oil supply system according to claim 1 or 2, characterized in that: The end of the oil extraction pipeline (1) is a stainless steel pipe with holes in the side wall. The outer diameter of the stainless steel pipe is no larger than the opening diameter of the oil storage barrel, and the number of holes is one or more.

4. The oil supply system according to claim 1, characterized in that: The pneumatic pump oil outlet pipeline (5) is divided into two, one pipeline is connected to the inlet of the electric oil delivery pump (10), and the other pipeline is connected to the oil inlet of the pneumatic oil supply pump (4), and a reflux regulating valve (8) is provided on the pipeline.

5. The oil supply system according to claim 1, characterized in that: The pneumatic pump oil system is also provided with an oil-water separator (6), and the compressed air source is connected to the air inlet of the pneumatic oil supply pump (4) via the air pressure regulating valve (7) and the oil-water separator (6) in sequence.

6. The oil supply system according to claim 1, characterized in that: The electric pump oil outlet pipeline (11) is divided into two, one pipeline is connected to the pressure gauge (15), and the other oil return pipeline (13) is connected to the inlet of the electric oil pump (10).

7. The oil supply system according to claim 1, characterized in that: The oil return line (13) is wound around a heat dissipation ring (14) on the outside.

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