Hydraulic energy-saving system

Abstract

The utility model discloses a hydraulic energy-saving system which comprises a liquid storage structure, a liquid return pipeline, a liquid supply pipeline, a main hydraulic system, an auxiliary hydraulic system and an equipment end, and the main hydraulic system and the auxiliary hydraulic system are connected between the liquid supply pipeline and the liquid return pipeline in parallel. One end of the liquid supply pipeline and one end of the liquid return pipeline are both connected with the equipment end, and the other end of the liquid supply pipeline and the other end of the liquid return pipeline are both connected with the liquid storage structure. Through the application of the hydraulic energy-saving system, the hydraulic energy-saving system suitable for the hollow copper pipe coil drawing production line is provided, the operation states of the motor and the hydraulic pump can be adjusted in time according to the actual production condition, particularly the hydraulic flow is accurately adjusted, the energy efficiency of the hydraulic system is improved, unnecessary energy consumption is avoided, and the production cost is reduced. And the hydraulic energy-saving system is favorable for reducing the production cost and is relatively high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of copper tube coiling production, in particular to a hydraulic energy-saving system. Background Art

[0002] In the coiling production process of hollow copper tubes, it is often necessary to equip a corresponding hydraulic system to provide the corresponding hydraulic power. The efficiency of the hydraulic system will be directly related to the production cost of the copper tube and the performance of the corresponding coiling equipment.

[0003] However, the hydraulic systems used in the prior art for the coiling production line often rely only on simple valves and fixed hydraulic flow settings, or manually adjust the operating state of the hydraulic pump to achieve production needs such as energy saving. However, these hydraulic control methods are difficult to adjust the hydraulic oil circuit in real time according to actual production data, resulting in unnecessary energy consumption and reduced production efficiency. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the utility model is to provide a hydraulic energy-saving system, including: a liquid storage structure, a liquid return pipeline, a liquid supply pipeline, a main hydraulic system, an auxiliary hydraulic system and an equipment end, the main hydraulic system and the auxiliary hydraulic system are connected in parallel between the liquid supply pipeline and the liquid return pipeline, one end of the liquid supply pipeline and one end of the liquid return pipeline are both connected to the equipment end, and the other end of the liquid supply pipeline and the other end of the liquid return pipeline are both connected to the liquid storage structure;

[0005] Among them, the auxiliary hydraulic system includes: a first hydraulic pump integrated with a first motor, a first regulating component, an electromagnetic reversing valve and a safety valve, the input end of the first hydraulic pump is connected to the liquid storage structure, the output end of the first hydraulic pump is connected to the liquid supply pipeline, the output end of the first hydraulic pump is connected to the return liquid pipeline through the safety valve, the output end of the first hydraulic pump is connected to the return liquid pipeline through the electromagnetic reversing valve, the electromagnetic reversing valve is also connected to the first regulating component, the first regulating component is connected to the return liquid pipeline, and the first regulating component is used to adjust the pressure and flow of the output end of the first hydraulic pump.

[0006] In another preferred embodiment, the main hydraulic system includes: a second hydraulic pump integrated with a second motor, a second regulating component and a butterfly valve integrated component, the input end of the second hydraulic pump is connected to the liquid storage structure through the butterfly valve integrated component, the output end of the second hydraulic pump is connected to the liquid supply pipeline, the output end of the second hydraulic pump is also connected to the second regulating component, the second regulating component is connected to the return liquid pipeline, and the second regulating component is used to adjust the pressure and flow of the output end of the second hydraulic pump.

[0007] In another preferred embodiment, the rated power of the first motor is smaller than the rated power of the second motor.

[0008] In another preferred embodiment, an electromagnetic overflow valve is connected between the output end of the second hydraulic pump and the liquid return pipeline.

[0009] In another preferred embodiment, a first one-way valve is provided at the connection between the secondary hydraulic system and the liquid supply pipeline.

[0010] In another preferred embodiment, a second one-way valve is provided at the connection between the main hydraulic system and the liquid supply pipeline.

[0011] In another preferred embodiment, an accumulator integrated assembly is connected between the liquid return pipeline and the liquid supply pipeline.

[0012] In another preferred embodiment, a cooler is provided on the liquid return pipeline.

[0013] In another preferred embodiment, an air filter is provided on the liquid return pipeline.

[0014] In another preferred embodiment, an oil drain ball valve is provided at the other end of the liquid return pipeline.

[0015] Due to the adoption of the above technical solution, the utility model has the following positive effects compared with the prior art:

[0016] Through the application of the utility model, a hydraulic energy-saving system suitable for a hollow copper tube coil-drawing production line is provided, which can timely adjust the operating status of the motor and the hydraulic pump according to the actual production situation, especially accurately adjust the hydraulic flow, thereby improving the energy efficiency of the hydraulic system, avoiding unnecessary energy consumption, and being conducive to reducing production costs. In addition, the hydraulic energy-saving system has strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of a hydraulic energy-saving system of the utility model.

[0018] In the attached figure:

[0019] 1. Liquid return pipeline; 2. Liquid supply pipeline; 3. First motor; 4. First hydraulic pump; 5. First regulating assembly; 6. Solenoid reversing valve; 7. Safety valve; 8. Second motor; 9. Second hydraulic pump; 10. Second regulating assembly; 11. Butterfly valve integrated assembly; 12. Solenoid overflow valve; 13. First non-return valve; 14. Second non-return valve; 15. Accumulator integrated assembly; 16. Cooler; 17. Air filter; 18. Oil drain ball valve; 19. Oil inlet filter; 20. Temperature and liquid level detection device; 21. Pressure detection device. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0021] like Figure 1 As shown, a hydraulic energy-saving system of a preferred embodiment is shown, including: a liquid storage structure, a liquid return pipeline 1, a liquid supply pipeline 2, a main hydraulic system, an auxiliary hydraulic system and an equipment end, the main hydraulic system and the auxiliary hydraulic system are connected in parallel between the liquid supply pipeline 2 and the liquid return pipeline 1, one end of the liquid supply pipeline 2 and one end of the liquid return pipeline 1 are both connected to the equipment end, and the other end of the liquid supply pipeline 2 and the other end of the liquid return pipeline 1 are both connected to the liquid storage structure. Furthermore, the oil is pre-stored in the liquid storage structure, and enters the equipment end through the liquid supply pipeline 2 under the pumping of the main hydraulic system and / or the auxiliary hydraulic system, and returns to the liquid storage structure through the liquid return pipeline 1 after the equipment end participates in the work, thereby forming a circulating oil circuit.

[0022] Further, as a preferred embodiment, the auxiliary hydraulic system includes: a first hydraulic pump 4 integrated with a first motor 3, a first regulating assembly 5, an electromagnetic reversing valve 6 and a safety valve 7, the input end of the first hydraulic pump 4 is connected to the liquid storage structure, the output end of the first hydraulic pump 4 is connected to the liquid supply pipeline 2, the output end of the first hydraulic pump 4 is connected to the liquid return pipeline through the safety valve 7, the output end of the first hydraulic pump 4 is connected to the liquid return pipeline 1 through the electromagnetic reversing valve 6, the electromagnetic reversing valve 6 is also connected to the first regulating assembly 5, the first regulating assembly 5 is connected to the liquid return pipeline 1, and the first regulating assembly 5 is used to adjust the pressure and flow of the output end of the first hydraulic pump 4. Further, when the auxiliary hydraulic system is started, the first motor 3 drives the first hydraulic pump 4 to work, the first hydraulic pump 4 transports the oil upward and sends it to the liquid supply pipeline 2 after the pressure and flow are adjusted by the first regulating assembly 5, the electromagnetic reversing valve 6 is used to cooperate with the first regulating assembly 5, and the safety valve 7 is used to directly return the oil to the liquid return pipeline 1 when the safety pressure exceeds the safety pressure.

[0023] Further, as a preferred embodiment, the liquid storage structure is preferably an oil tank.

[0024] Further, as a preferred embodiment, the main hydraulic system includes: a second hydraulic pump 9 integrated with a second motor 8, a second regulating assembly 10 and a butterfly valve integrated assembly 11, the input end of the second hydraulic pump 9 is connected to the liquid storage structure through the butterfly valve integrated assembly 11, the output end of the second hydraulic pump 9 is connected to the liquid supply pipeline 2, the output end of the second hydraulic pump 9 is also connected to the second regulating assembly 10, the second regulating assembly 10 is connected to the liquid return pipeline 1, and the second regulating assembly 10 is used to adjust the pressure and flow of the output end of the second hydraulic pump 9. Further, when the main hydraulic system is started, the second motor 8 drives the second hydraulic pump 9 to work, and the second hydraulic pump 9 transports the oil upward through the butterfly valve integrated assembly 11 and sends it to the liquid supply pipeline 2 after the pressure and flow are adjusted by the second regulating assembly 10.

[0025] Further, as a preferred embodiment, the first regulating assembly 5 and the second regulating assembly 10 each include at least one electromagnetic regulating valve for regulating pressure and flow. Furthermore, the regulating capability can be further improved by arranging several electromagnetic regulating valves in parallel.

[0026] Further, as a preferred embodiment, the rated power of the first motor 3 is less than the rated power of the second motor 8. Further, the rated power of the first motor 3 is preferably 2.2KW, and the rated power of the second motor 8 is preferably 30KW.

[0027] Further, as a preferred embodiment, an electromagnetic overflow valve 12 is connected between the output end of the second hydraulic pump 9 and the return liquid pipeline 1. Further, the pressure of the output end of the second hydraulic pump 9 is controlled by the setting of the electromagnetic overflow valve 12.

[0028] Further, as a preferred embodiment, a first one-way valve 13 is provided at the connection between the auxiliary hydraulic system and the liquid supply pipeline 2. Further, the first one-way valve 13 is provided to protect the first hydraulic pump 4.

[0029] Further, as a preferred embodiment, a second one-way valve 14 is provided at the connection between the main hydraulic system and the liquid supply pipeline 2. Further, the second one-way valve 14 is provided to protect the second hydraulic pump 9.

[0030] Further, as a preferred embodiment, an accumulator integrated assembly 15 is connected between the return liquid pipeline 1 and the supply liquid pipeline 2. Further, the accumulator integrated assembly 15 is used to store excess pressure when the main hydraulic system and the auxiliary hydraulic system are working and to assist in pressurization when there is a low pressure situation.

[0031] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0032] The utility model also has the following implementation methods based on the above:

[0033] In a further embodiment of the utility model, a cooler 16 is provided on the liquid return pipeline 1. Further, the cooler 16 is provided to cool down the oil returned from the equipment end to the liquid return pipeline 1.

[0034] In a further embodiment of the present invention, the cooler 16 is preferably an air-cooled heat exchanger or a water-cooled heat exchanger.

[0035] In a further embodiment of the present invention, an air filter 17 is provided on the liquid return pipeline 1 .

[0036] In a further embodiment of the present invention, an oil drain ball valve 18 is provided at the other end of the liquid return pipeline 1 .

[0037] In a further embodiment of the utility model, it further comprises: an oil inlet filter 19, and an oil inlet filter 19 is disposed at the connection ends of the first hydraulic pump 4 and the second hydraulic pump 9 and the liquid storage structure.

[0038] In a further embodiment of the utility model, it also includes: a temperature and liquid level detection device 20, which can include at least a temperature detection unit and a liquid level detection unit. The temperature detection unit is used to detect the temperature of the oil in the return liquid pipeline 1, and the liquid level detection unit is used to detect the liquid level in the return liquid pipeline 1.

[0039] In a further embodiment of the present invention, it further comprises: a pressure detection device 21, which is arranged at the liquid supply pipeline 2 to detect the pressure in the liquid supply pipeline 2. Further, the pressure detection device 21 is preferably a pressure gauge.

[0040] In a further embodiment of the utility model, it also includes: a control system, the control system is at least connected to the first motor 3, the second motor 8 and the equipment end in communication; the control system is at least used to obtain the working information of the equipment end in real time, the control system collects the actual power of the motor currently running in real time, and pre-calculates the theoretical power of the motor in different working stages; the actual power is compared with the theoretical power to adjust the system. Preferably, if the actual power is greater than the theoretical power, the second motor 8 of the second hydraulic pump 9 is stopped, and the first motor 3 of the first hydraulic pump 4 is started, so that the pressure is maintained by the first hydraulic pump 4 with a smaller and appropriate power; if the actual power is less than the theoretical power, the first motor 3 and the second motor 8 are started in sequence according to the preset start sequence to drive the operation of the first hydraulic pump 4 and the second hydraulic pump 9. Further, through the setting of the control system, the first hydraulic system and the second hydraulic system in the system can be controllably adapted to different equipment end production requirements.

[0041] In a further embodiment of the utility model, the control system includes at least: a controller and a pressure transmitter, the controller and the pressure transmitter are communicatively connected, the controller is communicatively connected to at least the device end, the first motor 3 and the second motor 8, the controller is used to obtain information from the device end and control the corresponding motor, and the pressure transmitter is used to obtain oil circuit pressure change information at various locations in the system to feed back to the controller for further adjustment.

[0042] In a further embodiment of the utility model, the equipment end is preferably a copper tube coil drawing production line.

[0043] In a further embodiment of the present invention, the working information on the equipment side is preferably the amount of copper tube production material and the operating status of the copper tube coil-drawing production line.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic energy-saving system, characterized in that: include: A liquid storage structure, a liquid return pipeline, a liquid supply pipeline, a main hydraulic system, an auxiliary hydraulic system and an equipment end, wherein the main hydraulic system and the auxiliary hydraulic system are connected in parallel between the liquid supply pipeline and the liquid return pipeline, one end of the liquid supply pipeline and one end of the liquid return pipeline are both connected to the equipment end, and the other end of the liquid supply pipeline and the other end of the liquid return pipeline are both connected to the liquid storage structure; Among them, the auxiliary hydraulic system includes: a first hydraulic pump integrated with a first motor, a first regulating component, an electromagnetic reversing valve and a safety valve, the input end of the first hydraulic pump is connected to the liquid storage structure, the output end of the first hydraulic pump is connected to the liquid supply pipeline, the output end of the first hydraulic pump is connected to the return liquid pipeline through the safety valve, the output end of the first hydraulic pump is connected to the return liquid pipeline through the electromagnetic reversing valve, the electromagnetic reversing valve is also connected to the first regulating component, the first regulating component is connected to the return liquid pipeline, and the first regulating component is used to adjust the pressure and flow of the output end of the first hydraulic pump.

2. The hydraulic energy-saving system according to claim 1, characterized in that: The main hydraulic system includes: a second hydraulic pump integrated with a second motor, a second regulating component and a butterfly valve integrated component, the input end of the second hydraulic pump is connected to the liquid storage structure through the butterfly valve integrated component, the output end of the second hydraulic pump is connected to the liquid supply pipeline, the output end of the second hydraulic pump is also connected to the second regulating component, the second regulating component is connected to the return liquid pipeline, and the second regulating component is used to adjust the pressure and flow of the output end of the second hydraulic pump.

3. The hydraulic energy-saving system according to claim 2, characterized in that: The rated power of the first motor is smaller than the rated power of the second motor.

4. The hydraulic energy-saving system according to claim 2, characterized in that: An electromagnetic overflow valve is connected between the output end of the second hydraulic pump and the liquid return pipeline.

5. The hydraulic energy-saving system according to claim 1, characterized in that: A first one-way valve is provided at the connection between the auxiliary hydraulic system and the liquid supply pipeline.

6. The hydraulic energy-saving system according to claim 2, characterized in that: A second one-way valve is provided at the connection between the main hydraulic system and the liquid supply pipeline.

7. The hydraulic energy-saving system according to claim 1, characterized in that: An accumulator integrated component is connected between the liquid return pipeline and the liquid supply pipeline.

8. The hydraulic energy-saving system according to claim 1, characterized in that: A cooler is arranged on the liquid return pipeline.

9. The hydraulic energy-saving system according to claim 1, characterized in that: An air filter is arranged on the liquid return pipeline.

10. The hydraulic energy-saving system according to claim 1, characterized in that: The other end of the liquid return pipeline is provided with an oil drain ball valve.

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