A high-temperature test bench for high-pressure hydraulic products
By designing a high-temperature test bench with independent heating function, the problem of inconvenient temperature and pressure control in the prior art is solved, and the repeated experiments on the workpiece and the reduction of equipment costs are achieved.
Patent Information
- Application Number
- CN202520441709.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2035-03-13
AI Technical Summary
The existing high-temperature test bench has complex structure, inconvenient temperature control, and inconvenient liquid supply pressure adjustment, resulting in poor heating effect of the liquid and affecting the experimental effect.
A high-temperature test bench for high-pressure hydraulic products has independent heating function. The flow and pressure adjustment are achieved through two sets of oil supply systems. The oil is circulated and filtered before entering the product test system to ensure that the temperature and pressure are controlled.
Repeated experiments on workpieces are realized, effectively solving the problems of temperature and pressure control, reducing equipment costs, optimizing system composition, and extending the service life of the equipment.
Smart Images
Figure CN222731844U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic product testing, in particular to a high-pressure hydraulic product high-temperature testing platform. Background Art
[0002] The high-temperature test bench for high-pressure hydraulic products is composed of a high-temperature oil source system, an environmental temperature control system, a test measurement and control system, a test bench, etc. According to the requirements of the current process, the high-temperature working cycle requires the hydraulic oil to enter the product at a specified high temperature instantly, perform the working cycle, and then observe the operation of the workpiece. However, the existing high-temperature test bench has a complex structure, which is not convenient for temperature control and for adjusting the liquid supply pressure. When the heater starts to heat, the heating effect of the liquid is poor, and this part of the liquid enters the interior of the product, resulting in poor experimental results and inconvenient use. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a high-temperature test bench for high-pressure hydraulic products. The bench has an independent heating function to provide a working medium with controlled temperature and pressure for product testing. The medium is returned to the oil supply system for recycling after being consumed by the load system. The oil tank and pipelines need to be circulated and filtered before the oil enters the product testing system, so that the workpiece can be repeatedly tested, which can effectively solve the problems in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature test bench for high-pressure hydraulic products, comprising an oil supply tank, the outlet of which is connected to two oil supply pumps through a conduit, a one-way valve is arranged at the outlet of each oil supply pump, the outlet of the one-way valve is connected to the inlet of a filter through a conduit, a protective pipeline is connected to the conduit connecting the one-way valve and the filter, the outlet of the filter is connected to the inlet of a temperature control component, a flow meter and an accumulator are connected in series in sequence on the conduit connecting the filter and the temperature control component, the outlet of the filter is connected to the inlet of a test product through a conduit The inlet of the experimental product is connected, the inlet and outlet of the experimental product are both provided with a ball valve 1, the inlet and outlet of the experimental product are respectively provided with a temperature sensor device and a humidity sensor device, the outlet of the experimental product is connected with an oil return pipeline, the outlet of the oil return pipeline is connected with the inlet of the oil supply tank, the outlet of the temperature control component is connected with the oil return pipeline through a pipeline, and an electric ball valve 2 is connected in series on the pipeline connecting the outlet of the temperature control component and the oil return pipeline, a pressure regulating pipeline is connected between the outlet of the filter and the oil return pipeline, and the oil return pipeline is connected in series with a regulating valve, a heat sink and an oil return filter in sequence from the inlet to the outlet.
[0005] Furthermore, the protection pipeline includes a pipe connecting the outlet of the oil supply pump and the inlet of the oil supply tank, and a pressure sensor and a solenoid valve are connected in series on the pipe. When the pressure output by the two oil supply pumps is too high, the solenoid valve can be opened to allow the oil to flow directly back into the oil supply tank, thereby protecting the oil circuit.
[0006] Furthermore, there are two filters, which are arranged in series. The oil supply can be filtered through the two filters to ensure that the transported oil is clean oil.
[0007] Furthermore, the temperature control component includes heaters arranged in parallel, and the number of heaters is not less than eight. An electric ball valve is arranged at the inlet of each heater. During operation, one electric ball valve is kept in a normally open state. The output oil can enter the interior of the heater by opening the electric ball valve. The oil can be heated by the heater to control the temperature of the oil input into the experimental product. At the beginning, since the oil temperature heated by the heater is not high enough when it starts working, the oil at this time flows directly into the return oil pipeline through the electric ball valve 2. When the oil heated by the heater is normal, the electric ball valve 2 is closed, and the heated oil enters the interior of the experimental product for heating.
[0008] Furthermore, the pressure regulating pipeline is provided with an electric ball valve three and a throttle valve, which are arranged in parallel, and a proportional valve is connected in series at the outlet end of the pressure regulating pipeline. When the oil pressure is too high, the electric ball valve three and the throttle valve can be used to adjust the oil pressure input into the temperature control component, and the oil enters the return oil pipeline through the electric ball valve three, the throttle valve and the proportional valve, and finally flows back to the oil supply tank through the return oil pipeline.
[0009] Furthermore, the heat sink includes a three-way diverter valve connected in series on the return oil pipeline, a first outlet of the three-way diverter valve is connected to the inlet of the return oil filter, a second outlet of the three-way diverter valve is connected to the inlet of the radiator through a conduit, and the outlet of the radiator is connected to the inlet of the return oil filter through a conduit. When the oil temperature inside the return oil pipeline is too high, a part of the oil enters the radiator through the three-way diverter valve, the radiator can dissipate the heat of the oil passing through, the heat-dissipated oil flows back into the return oil pipeline to mix with the oil that has not been dissipated, and finally flows into the oil supply tank after being filtered by the return oil filter.
[0010] Compared with the prior art, the beneficial effects of the utility model are: the high-pressure hydraulic product high-temperature test bench has the following advantages:
[0011] 1. The utility model can lower the cost of equipment and optimize the system structure under the premise that the flow and pressure requirements can be met through two sets of oil supply systems; the motor speed can be adjusted according to the flow usage requirements, which can effectively save equipment energy consumption; the double-set oil supply design can reduce the loss of the pump, extend the service life of the equipment, and reduce the equipment maintenance cost.
[0012] 2. The utility model has an independent heating function to provide a temperature and pressure controlled working medium for product testing. After being consumed by the load system, the medium returns to the oil supply system for recycling. Before the oil enters the product testing system, the oil tank and pipeline need to be circulated and filtered, so that the workpiece can be tested repeatedly. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the system structure of the utility model.
[0014] In the figure: 1 oil supply tank, 2 oil supply pump, 3 one-way valve, 4 filter, 5 pressure sensor 1, 6 solenoid valve 1, 7 heater, 8 electric ball valve, 9 experimental product, 10 ball valve 1, 11 return oil pipeline, 12 electric ball valve 2, 13 pressure regulating pipeline, 14 proportional valve, 15 electric ball valve 3, 16 throttle valve, 17 regulating valve, 18 heat sink, 181 three-way diverter valve, 182 radiator, 19 return oil filter, 20 flow meter, 21 accumulator. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] See also Figure 1The utility model provides a technical solution: a high-temperature test bench for high-pressure hydraulic products, including an oil supply tank 1, on which temperature, humidity and liquid level sensors are arranged, so as to monitor the oil inside the oil supply tank 1, the outlet of the oil supply tank 1 is connected to two oil supply pumps 2 through a conduit, and a one-way valve 3 is arranged at the outlet of the oil supply pump 2, the outlet of the one-way valve 3 is connected to the inlet of the filter 4 through a conduit, and a protective pipeline is connected to the conduit connecting the one-way valve 3 and the filter 4, the outlet of the filter 4 is connected to the inlet of the temperature control component, and the conduit connecting the filter 4 and the temperature control component is connected in series with a flow meter 20 and an accumulator 21 in sequence, the outlet of the filter 4 is connected to the inlet of the experimental product 9 through a conduit, and the inlet and outlet of the experimental product 9 are both provided with ball valves 10. The inlet and outlet of the experimental product 9 are respectively provided with temperature sensors and humidity sensors. The outlet of the experimental product 9 is connected with a return oil pipeline 11. The outlet of the return oil pipeline 11 is connected to the inlet of the oil supply tank 1. The outlet of the temperature control component is connected to the return oil pipeline 11 through a pipeline, and an electric ball valve 12 is connected in series on the pipeline connecting the outlet of the temperature control component and the return oil pipeline 11. A pressure regulating pipeline 13 is connected between the outlet of the filter 4 and the return oil pipeline 11. The return oil pipeline 11 is connected in series with a regulating valve 17, a heat sink 18 and a return oil filter 19 from the inlet to the outlet. The protection pipeline includes a pipeline connecting the outlet of the oil supply pump 2 and the inlet of the oil supply tank 1, and a pressure sensor 5 and a solenoid valve 6 are connected in series on the pipeline. When the pressure output by the two oil supply pumps 2 is too high, the pressure sensor 13 is connected in series with the oil supply pump 2. By opening the solenoid valve 6, the oil supply can be directly returned to the inside of the oil supply tank 1, so as to protect the oil circuit. There are two filters 4, and the two filters 4 are arranged in series. The oil supply can be filtered by the two filters 4 to ensure that the delivered oil is clean oil. The temperature control component includes heaters 7 arranged in parallel, and the number of heaters 7 is not less than eight. An electric ball valve 8 is arranged at the inlet of each heater 7. When working, one electric ball valve 8 is kept in a normally open state. By opening the electric ball valve 8, the output oil can enter the inside of the heater 7. The oil can be heated by the heater 7 to control the oil temperature input into the experimental product 9. At the beginning, because the oil temperature heated by the heater 7 is not enough, the oil at this time is heated by the electric ball valve 8. The moving ball valve 2 12 flows directly into the return oil pipeline 11. When the oil heated by the heater 7 is normal, the electric ball valve 2 12 is closed, and the heated oil enters the experimental product 9 for heating. The pressure regulating pipeline 13 is provided with an electric ball valve 3 15 and a throttle valve 16. The electric ball valve 3 15 and the throttle valve 16 are arranged in parallel, and the outlet end of the pressure regulating pipeline 13 is connected in series with a proportional valve 14. When the oil pressure is too high, the electric ball valve 3 15 and the throttle valve 16 can adjust the oil pressure input into the temperature control component. The oil enters the return oil pipeline 11 through the electric ball valve 3 15, the throttle valve 16 and the proportional valve 14, and finally flows back to the oil supply tank 1 through the return oil pipeline 11. The heat sink 18 includes a three-way diverter valve 181 connected in series on the return oil pipeline 11.The first outlet of the three-way diverter valve 181 is connected to the inlet of the return oil filter 19, and the second outlet of the three-way diverter valve 181 is connected to the inlet of the radiator 182 through a conduit. The outlet of the radiator 182 is connected to the inlet of the return oil filter 19 through a conduit. When the oil temperature inside the return oil pipeline 11 is too high, a part of the oil enters the radiator 182 through the three-way diverter valve 181, and the radiator 182 can dissipate the heat of the oil passing through. The oil after the heat is dissipated flows back to the return oil pipeline 11 and mixes with the oil that has not been dissipated, and finally flows into the oil supply tank 1 after being filtered by the return oil filter 19. , Under the premise of meeting the flow and pressure requirements through two sets of oil supply systems, the cost of equipment is reduced and the system composition is optimized; according to the flow requirements, the motor speed can be adjusted to effectively save equipment energy consumption; the double-set oil supply design can reduce the loss of the pump, extend the service life of the equipment, and reduce the equipment maintenance cost. It has an independent heating function to provide temperature and pressure controlled working medium for product testing. After being consumed by the load system, the medium returns to the oil supply system for recycling. Before the oil enters the product test system, the oil tank and pipeline need to be circulated and filtered, so that the workpiece can be tested repeatedly. ,
[0017] During use: the oil inside the oil supply tank 1 can be extracted through the two oil supply pumps 2 to supply oil. When the output pressure of the two oil supply pumps 2 is too high, the solenoid valve 6 can be opened to allow the oil to flow directly back to the inside of the oil supply tank 1 to protect the oil circuit. During the oil supply, the oil can be filtered through the two filters 4 to ensure that the delivered oil is clean oil. Before the oil enters the temperature control component, when the oil pressure is too high, the electric ball valve 3 15 and the throttle valve 16 can be used to adjust the oil pressure input into the temperature control component. The oil passes through the electric ball valve 3 15, the throttle valve 16 and the proportional valve 14 and enters the return oil pipeline 11. Finally, it flows back to the inside of the oil supply tank 1 through the return oil pipeline 11. The output oil can enter the heater 7 by opening the electric ball valve 8, and the oil can be regulated by the heater 7. Heating is performed to control the temperature of the oil input into the experimental product 9. At the beginning, since the oil temperature heated by the heater 7 is not high enough, the oil at this time flows directly into the return oil pipeline 11 through the electric ball valve 12. When the oil heated by the heater 7 is normal, the electric ball valve 12 is closed, and the heated oil enters the experimental product 9 for heating, so as to detect the experimental product 9. The detected oil flows back to the oil supply tank 1 through the return oil pipeline 11. When the oil temperature in the return oil pipeline 11 is too high, a part of the oil is allowed to enter the radiator 182 through the three-way diverter valve 181. The radiator 182 can dissipate the heat of the oil passing through. The heat-dissipated oil flows back to the return oil pipeline 11 and mixes with the oil that has not been dissipated. Finally, it flows into the oil supply tank 1 after being filtered by the return oil filter 19.
[0018] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.
Claims
1. A high-pressure hydraulic product high-temperature test bench, comprising an oil supply tank (1), characterized in that: The outlet of the oil supply box (1) is connected to two oil supply pumps (2) via a conduit. A one-way valve (3) is provided at the outlet of each of the oil supply pumps (2). The outlet of the one-way valve (3) is connected to the inlet of the filter (4) via a conduit. A protective pipeline is connected to the conduit connecting the one-way valve (3) and the filter (4). The outlet of the filter (4) is connected to the inlet of the temperature control component. A flow meter (20) and an accumulator (21) are connected in series in sequence on the conduit connecting the filter (4) and the temperature control component. The outlet of the filter (4) is connected to the inlet of the experimental product (9) via a conduit. The inlet and outlet of the experimental product (9) are both provided with a ball valve (10 ), a temperature sensor device and a humidity sensor device are respectively arranged at the inlet and outlet of the experimental product (9), the outlet of the experimental product (9) is connected to an oil return pipeline (11), the outlet of the oil return pipeline (11) is connected to the inlet of the oil supply tank (1), the outlet of the temperature control component is connected to the oil return pipeline (11) through a pipeline, and an electric ball valve 2 (12) is connected in series on the pipeline connecting the outlet of the temperature control component and the oil return pipeline (11), a pressure regulating pipeline (13) is connected between the outlet of the filter (4) and the oil return pipeline (11), and the oil return pipeline (11) is connected in series with a regulating valve (17), a heat sink (18) and an oil return filter (19) in sequence from the inlet to the outlet.
2. A high-pressure hydraulic product high-temperature test bench according to claim 1, characterized in that: The protection pipeline comprises a pipeline connecting the outlet of the oil supply pump (2) and the inlet of the oil supply tank (1), and a pressure sensor (5) and a solenoid valve (6) are connected in series on the pipeline.
3. A high-pressure hydraulic product high-temperature test bench according to claim 1, characterized in that: The number of the filters (4) is two, and the two filters (4) are arranged in series.
4. A high-pressure hydraulic product high-temperature test bench according to claim 1, characterized in that: The temperature control assembly comprises heaters (7) arranged in parallel, and the number of the heaters (7) is not less than eight, and an electric ball valve (8) is arranged at the inlet of each heater (7), and one electric ball valve (8) is kept in a normally open state during operation.
5. The high-pressure hydraulic product high-temperature test bench according to claim 1, characterized in that: The pressure regulating pipeline (13) is provided with an electric ball valve (15) and a throttle valve (16), the electric ball valve (15) and the throttle valve (16) are arranged in parallel, and a proportional valve (14) is connected in series at the outlet end of the pressure regulating pipeline (13).
6. A high-pressure hydraulic product high-temperature test bench according to claim 1, characterized in that: The heat sink (18) comprises a three-way flow divider valve (181) connected in series to the oil return pipeline (11); a first outlet of the three-way flow divider valve (181) is connected to an inlet of the oil return filter (19); a second outlet of the three-way flow divider valve (181) is connected to an inlet of a radiator (182) via a conduit; and an outlet of the radiator (182) is connected to an inlet of the oil return filter (19) via a conduit.