Novel energy-saving hydraulic servo station

Abstract

The utility model discloses a novel energy-saving hydraulic servo station, which belongs to the technical field of hydraulic systems and comprises a steel belt cutting device and a hydraulic system, and the hydraulic system comprises a servo pump, a control valve group, an energy accumulator, a return oil filter, a heater, a circulating filter and an oil cooler. The hydraulic station is changed into servo control through the arranged servo pump and the control valve group, when the system pressure is not lower than 12 MPa, the motor and the hydraulic pump are not started, and when the system pressure reaches 15 MPa, the hydraulic station is in a standby state, so that the stability of the hydraulic system is guaranteed, the motor is prevented from being frequently started, and the consumption of electric energy is greatly reduced; and three groups of energy accumulators are additionally arranged on the hydraulic main pipeline, the total energy storage amount is about two hundred liters, the energy accumulators are used for supplementing pressure when the hydraulic micro-demand is needed, the normal use of the equipment can be ensured, and compared with the original equipment, the energy can be saved by about 80%, and the use cost of the equipment is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, and more specifically to a novel energy-saving hydraulic servo station. Background Art

[0002] The hydraulic station is a hydraulic source device consisting of a hydraulic pump, a driving motor, an oil tank, a directional valve, a throttle valve, a relief valve, etc., or a hydraulic device including a control valve.

[0003] At present, most of the hydraulic stations of steel strip cutting equipment are two-day constant pressure variable pumps. As long as the equipment is turned on, the hydraulic station needs to be turned on all the time, with a monthly electricity consumption of 15,000 kilowatts, which is a huge energy consumption. The hydraulic consumption is used at intervals, and it is expected to move frequently in about 20 minutes, during which there is only a small amount of hydraulic demand, which greatly increases the cost of equipment use. For this reason, we have designed a new energy-saving hydraulic servo station to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new energy-saving hydraulic servo station. The new energy-saving hydraulic servo station changes the hydraulic station into servo control by setting a servo pump and a control valve group. When the system pressure is not less than 12 MPa, the motor and the hydraulic pump will not start. When the system pressure reaches 15 MPa, the hydraulic station will be on standby, thereby ensuring the stability of the hydraulic system, preventing the motor from starting frequently, and greatly reducing the consumption of electric energy. In addition, by adding three groups of accumulators in the hydraulic main line with a total storage capacity of about 200 liters, the accumulators can replenish the pressure when there is a slight demand for hydraulic pressure, which can ensure the normal use of the equipment. Compared with the original equipment, it can save energy by about 80%, greatly reducing the use cost of the equipment.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A new type of energy-saving hydraulic servo station, including a steel strip cutting device and a hydraulic system, the surface of the steel strip cutting device is rotatably connected with a steel strip unwinding and rewinding rotating wheel, a buffer wheel, an equipment head, a safety locking device and a steel strip bite buckle, the interior of the steel strip cutting device is provided with a cutting mechanism motion control component, a packing and tightening limit control component, a compressed air filter, a pressure reducing and regulating device and a control solenoid valve group, the outer side of the steel strip cutting device is provided with a vertical column frame, a movable belt threading guide rail and a belt threading duct, the hydraulic system includes a servo pump, a control valve group, an accumulator, an oil return filter, a heater, a circulating filter and an oil cooler, the servo pump, the control valve group, the oil return filter and the circulating filter are fixedly installed Installed on the upper surface of the steel strip cutting equipment, the heater is fixedly installed on the side of the steel strip cutting equipment. The new energy-saving hydraulic servo station changes the hydraulic station to servo control by setting a servo pump and a control valve group. When the system pressure is not less than 12 MPa, the motor and the hydraulic pump will not start. When the system pressure reaches 15 MPa, the hydraulic station will be on standby, thereby ensuring the stability of the hydraulic system, preventing the motor from starting frequently, and greatly reducing the consumption of electric energy. In addition, by adding three sets of accumulators to the hydraulic main line, the total storage capacity is about 200 liters. When there is a slight demand for hydraulic pressure, the accumulator can replenish the pressure to ensure the normal use of the equipment. Compared with the original equipment, it can save energy by about 80%, greatly reducing the cost of equipment use.

[0007] Furthermore, the number of the accumulators is three groups, a support seat is fixedly installed on the bottom of the accumulator, and the side of the support seat is fixedly connected to the surface of the steel strip cutting equipment, the steel strip cutting equipment is provided with a hydraulic main line, and one end of the hydraulic main line is interconnected with the accumulator, the accumulator is used to stabilize the system pressure and avoid frequent starting and stopping of the servo pump when a small amount of pressure is used.

[0008] Furthermore, a cooling component is provided inside the oil cooler, and the oil cooler is connected to the hydraulic oil through a pipeline. The oil cooler starts when the oil temperature exceeds fifty degrees Celsius and stops when it is lower than thirty-five degrees Celsius to prevent the equipment from shutting down due to excessive oil temperature.

[0009] Furthermore, the surface of the circulation filter is provided with two interconnected oil pipe interfaces, and the two oil pipe interfaces are respectively connected to the inlet and outlet oil pipes. The circulation filter is used to circulate and filter the oil to ensure that the oil return of the oil cooler is clean.

[0010] Furthermore, a filter element is arranged inside the return oil filter, and an oil return pipe and an oil outlet pipe are fixedly connected to the surface of the return oil filter. The return oil filter is used to filter the return oil to ensure the cleanliness of the oil.

[0011] Furthermore, a heating component is provided inside the heater, and a hydraulic oil pipe is connected to the surface. The heater starts when the hydraulic oil temperature is lower than 20 degrees Celsius and stops when it is higher than 40 degrees Celsius, thereby ensuring the best working state of the oil.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) This scheme changes the hydraulic station to servo control by setting up a servo pump and a control valve group. When the system pressure is not less than 12 MPa, the motor and the hydraulic pump will not start. When the system pressure reaches 15 MPa, the hydraulic station will be on standby, thereby ensuring the stability of the hydraulic system, preventing the motor from starting frequently, and greatly reducing the consumption of electricity.

[0014] (2) This solution adds three sets of accumulators to the main hydraulic line, with a total storage capacity of about 200 liters. When there is a slight demand for hydraulic pressure, the accumulators can replenish the pressure to ensure the normal use of the equipment. Compared with the original equipment, it can save about 80% of energy, greatly reducing the cost of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is the circuit diagram of the hydraulic system of the utility model.

[0017] Description of the numbers in the figure:

[0018] 1. Servo pump, 2. Control valve group, 3. Accumulator, 4. Return oil filter, 5. Heater, 6. Circulation filter, 7. Oil cooler. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1

[0021] See also Figure 1-2A new type of energy-saving hydraulic servo station includes a steel strip cutting device and a hydraulic system. The composition structure and working principle of the steel strip cutting device belong to the prior art and will not be described in detail here. The surface of the steel strip cutting device is rotatably connected with a steel strip unwinding and rewinding rotating wheel, a buffer wheel, an equipment head, a safety locking device and a steel strip bite buckle. The interior of the steel strip cutting device is provided with a cutting mechanism motion control component, a packing and tightening limit control component, a compressed air filter, a pressure reducing and regulating device and a control solenoid valve group. The outer side of the steel strip cutting device is provided with a vertical column frame, a movable belt threading guide rail and a belt threading duct. The hydraulic system includes a servo pump 1, a control valve group 2, an accumulator 3, a return oil filter 4, a heater 5, a circulation filter 6 and an oil cooler 7. The servo pump 1 is used to provide hydraulic pressure. The system starts when it is lower than the set pressure and stops when it is higher than the set pressure. The control valve group 2 is used for pressure feedback, controls the start and stop of the servo motor, and protects the system from high-pressure overflow. The servo pump 1, the control valve group 2, the return oil filter 4 and the circulation filter 6 are fixedly installed on the upper end surface of the steel strip cutting device, and the heater 5 is fixedly installed on the side of the steel strip cutting device.

[0022] The surface of the circulation filter 6 is provided with two interconnected oil pipe interfaces, and the two oil pipe interfaces are respectively connected to the inlet and outlet oil pipes. The circulation filter 6 is used for circulating and filtering the oil to ensure the cleanliness of the return oil of the oil cooler 7. A filter element is arranged inside the return oil filter 4. The surface of the return oil filter 4 is fixedly connected with the return oil pipe and the outlet oil pipe. The return oil filter 4 is used for filtering the return oil to ensure the cleanliness of the oil. A heating component is arranged inside the heater 5, and the surface is connected to the hydraulic oil pipe. The heater 5 is started when the hydraulic oil temperature is lower than 20 degrees Celsius and stopped when it is higher than 40 degrees Celsius to ensure the best working state of the oil.

[0023] In this embodiment, the hydraulic station is changed to servo control by setting up a servo pump 1 and a control valve group 2. When the system pressure is not lower than 12 MPa, the motor and the hydraulic pump will not start. When the system pressure reaches 15 MPa, the hydraulic station will be on standby, thereby ensuring the stability of the hydraulic system, preventing the motor from starting frequently, and greatly reducing the consumption of electric energy.

[0024] Example 2

[0025] See also Figure 1-2A new type of energy-saving hydraulic servo station includes a steel strip cutting device and a hydraulic system. The composition structure and working principle of the steel strip cutting device belong to the prior art and will not be described in detail here. The surface of the steel strip cutting device is rotatably connected with a steel strip unwinding and rewinding rotating wheel, a buffer wheel, an equipment head, a safety locking device and a steel strip bite buckle. The interior of the steel strip cutting device is provided with a cutting mechanism motion control component, a packing and tightening limit control component, a compressed air filter, a pressure reducing and regulating device and a control solenoid valve group. The outer side of the steel strip cutting device is provided with a vertical column frame, a movable belt threading guide rail and a belt threading duct. The hydraulic system includes a servo pump 1, a control valve group 2, an accumulator 3, a return oil filter 4, a heater 5, a circulation filter 6 and an oil cooler 7. The servo pump 1 is used to provide hydraulic pressure. The system starts when it is lower than the set pressure and stops when it is higher than the set pressure. The control valve group 2 is used for pressure feedback, controls the start and stop of the servo motor, and protects the system from high-pressure overflow. The servo pump 1, the control valve group 2, the return oil filter 4 and the circulation filter 6 are fixedly installed on the upper end surface of the steel strip cutting device, and the heater 5 is fixedly installed on the side of the steel strip cutting device.

[0026] There are three groups of accumulators 3. A support seat is fixedly installed at the bottom of the accumulator 3, and the side of the support seat is fixedly connected to the surface of the steel strip cutting equipment. The steel strip cutting equipment is provided with a hydraulic main line, and one end of the hydraulic main line is interconnected with the accumulator 3. The accumulator 3 is used to stabilize the system pressure and avoid frequent start and stop of the servo pump 1 when a small amount of pressure is used. A cooling component is provided inside the oil cooler 7. The oil cooler 7 is connected to the hydraulic oil through a pipeline. The oil cooler 7 starts when the oil temperature exceeds fifty degrees Celsius and stops when it is lower than thirty-five degrees Celsius to prevent the equipment from shutting down due to excessive oil temperature.

[0027] In this embodiment, three groups of accumulators 3 are added to the main hydraulic line, with a total storage capacity of about 200 liters. When a slight hydraulic demand is encountered, the accumulator 3 can replenish the pressure to ensure the normal use of the equipment. Compared with the original equipment, it can save about 80% energy, greatly reducing the cost of using the equipment.

[0028] The new energy-saving hydraulic servo station changes the hydraulic station into servo control through the servo pump 1 and control valve group 2 during operation. When the system pressure of the hydraulic station is not less than 12 MPa, the motor and the hydraulic pump will not start. When the system pressure of the hydraulic station reaches 15 MPa, the hydraulic station will be on standby, thereby ensuring the stability of the hydraulic system, preventing the motor from starting frequently, and greatly reducing the consumption of electric energy. In addition, by adding three groups of accumulators 3 to the main hydraulic line, the total storage capacity is about 200 liters. When there is a slight demand for hydraulic pressure, the accumulator 3 can replenish the pressure, which can ensure the normal use of the equipment. Compared with the original equipment, it can save energy by about 80%, greatly reducing the use cost of the equipment.

[0029] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A new type of energy-saving hydraulic servo station, including a steel strip cutting device and a hydraulic system, wherein the surface of the steel strip cutting device is rotatably connected with a steel strip unwinding and rewinding rotating wheel, a buffer wheel, a device head, a safety locking device and a steel strip bite buckle, and the interior of the steel strip cutting device is provided with a cutting mechanism motion control component, a packing and tightening limit control component, a compressed air filter, a pressure reducing and regulating device and a control solenoid valve group, and the outer side of the steel strip cutting device is provided with a vertical column frame, a movable belt threading guide rail and a belt threading duct, characterized in that: The hydraulic system comprises a servo pump (1), a control valve group (2), an accumulator (3), an oil return filter (4), a heater (5), a circulation filter (6) and an oil cooler (7); the servo pump (1), the control valve group (2), the oil return filter (4) and the circulation filter (6) are fixedly mounted on the upper end surface of the steel strip cutting device, and the heater (5) is fixedly mounted on the side of the steel strip cutting device.

2. A new energy-saving hydraulic servo station according to claim 1, characterized in that: The number of the accumulators (3) is three groups. A support seat is fixedly installed at the bottom of the accumulator (3), and the side of the support seat is fixedly connected to the surface of the steel strip cutting device. The steel strip cutting device is provided with a hydraulic main line, and one end of the hydraulic main line is interconnected with the accumulator (3).

3. A new energy-saving hydraulic servo station according to claim 1, characterized in that: A cooling assembly is provided inside the oil cooler (7), and the oil cooler (7) is connected to the hydraulic oil via a pipeline.

4. A new energy-saving hydraulic servo station according to claim 1, characterized in that: The surface of the circulation filter (6) is provided with two interconnected oil pipe interfaces, and the two oil pipe interfaces are respectively connected to inlet and outlet oil pipes.

5. The new energy-saving hydraulic servo station according to claim 1 is characterized in that: A filter element is arranged inside the oil return filter (4), and an oil return pipe and an oil outlet pipe are fixedly connected to the surface of the oil return filter (4).

6. A new energy-saving hydraulic servo station according to claim 1, characterized in that: The heater (5) is provided with a heating component inside and is connected to a hydraulic oil pipe on its surface.

Images