CN210660778U - Accumulator pressure maintaining system - Google Patents
Accumulator pressure maintaining system Download PDFInfo
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- CN210660778U CN210660778U CN201921320426.XU CN201921320426U CN210660778U CN 210660778 U CN210660778 U CN 210660778U CN 201921320426 U CN201921320426 U CN 201921320426U CN 210660778 U CN210660778 U CN 210660778U
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Abstract
The utility model belongs to the technical field of the casting is supporting, especially, relate to an energy storage ware pressurize system, the subsystem of normally working includes: pressure supply device exports operating pressure in high-pressure line and system pressure pipeline respectively through pressure auto-change over device's intercommunication to store energy in pressure energy memory, the utility model provides a prior art exist because many pumps parallel operation, it has the problem of shortcomings such as control cost height, system vibration is big, calorific capacity is big, power consumption is big, has control cost low, be convenient for control and stable performance and the little beneficial technological effect of installation space.
Description
Technical Field
The utility model belongs to the technical field of the casting is supporting, especially, relate to an energy storage ware pressurize system.
Background
The slip flask molding machine belongs to a kind of equipment in the casting machine, because of the technological requirement of the molding in the slip flask molding machine, need the hydraulic system to provide two kinds of pressure and two kinds of flow, in the compacting work, the compacting cylinder passes 21MPa of high pressure to compact the sand mould, the other cylinders are in the pressure maintaining state, except for compacting work, all cylinders pass 10MPa of pressure to finish the movements such as closing, turning over the case, slip flask, etc., require in the compacting process, the other cylinders are in the pressure maintaining state, the position is reliable, the high-pressure circuit does not have impact to the low-pressure circuit while compacting, the existing control mode is to design two or more hydraulic pumps, output high pressure and low pressure separately, while compacting work, the high pressure pump outputs the high pressure, the low-pressure pump does the pressure maintaining, the low-pressure pump outputs the low pressure while the other movements, the high pressure pump unloads, the prior art exists because of the parallel work of the, Large heat generation and large power consumption.
Disclosure of Invention
The utility model provides an energy storage ware pressurize system to having proposed among the above-mentioned background art and having had because many pumps parallel operation, it has the problem of shortcomings such as control cost height, system vibration are big, calorific capacity is big, power consumption is big.
The utility model provides a technical problem adopt following technical scheme to realize: an accumulator pressure maintaining system comprises a normal working subsystem and a compaction working subsystem;
the normal operation subsystem includes:
the pressure supply device respectively outputs working pressure to the high-pressure pipeline and the system pressure pipeline through the communication of the pressure switching device and stores the working pressure in the pressure energy storage device;
the compaction work subsystem includes:
the pressure supply device outputs the compaction pressure to the high-pressure pipeline through the disconnection of the pressure switching device, and the pressure energy storage device provides the holding pressure for the system pressure pipeline.
Further, the pressure supply device is communicated with a high-pressure pipeline, the high-pressure pipeline is communicated with or disconnected from a system pressure pipeline through a pressure switching device, and the system pressure pipeline is communicated with the pressure energy storage device.
Further, the pressure supply device comprises a double-pressure double-flow plunger pump, the pressure switching device comprises an electromagnetic directional valve, and the pressure energy storage device comprises an energy accumulator.
Further, the pressure supply device outputs the working pressure to the high-pressure pipeline and the system pressure pipeline respectively through the communication of the pressure switching device, and stores the energy in the pressure energy storage device, and the pressure energy storage device comprises:
when the dual-pressure dual-flow plunger pump works normally, working pressure is output by the dual-pressure dual-flow plunger pump through the high-pressure pipeline, the connection between the high-pressure pipeline and the system pressure pipeline is kept through the electromagnetic reversing valve, the system pressure pipeline outputs the working pressure, the energy accumulator stores the working pressure into pressure maintaining pressure, and the high-pressure pipeline and the system pressure pipeline are kept at the working pressure;
further, the pressure supply device outputs the compaction pressure to the high-pressure pipeline through disconnection of the pressure switching device, and the pressure storage device provides the holding pressure for the system pressure pipeline, and the pressure supply device comprises:
when the compaction work is carried out, the double-pressure double-flow plunger pump outputs compaction pressure through the high-pressure pipeline, the connection between the high-pressure pipeline and the system pressure pipeline is disconnected through the electromagnetic directional valve, the system pressure pipeline provides pressure maintaining pressure through the energy accumulator, and the high-pressure pipeline keeps the compaction pressure and the system pressure pipeline keeps the pressure maintaining pressure.
Further, the double-pressure double-flow plunger pump respectively outputs the working pressure of 10MPa high-flow hydraulic oil and the compaction pressure of 21MPa low-flow hydraulic oil in a time-sharing manner, and the pressure maintaining pressure is 10 MPa.
Further, the system pressure pipeline is decompressed through a system overflow valve when the system pressure pipeline is abnormally overloaded, and the high-pressure pipeline is decompressed through a high-pressure overflow valve when the system pressure pipeline is abnormally overloaded.
Furthermore, the accumulator pressure maintaining system further comprises an oil return subsystem, and the oil return subsystem is connected to the high-pressure pipeline and the system pressure pipeline respectively.
Furthermore, the oil return subsystem comprises an oil return pipeline, one input end of the oil return pipeline is connected to a system pressure pipeline through a system overflow valve, the other input end of the oil return pipeline is connected to a high-pressure pipeline through a high-pressure overflow valve, and an oil return end of the oil return pipeline is connected with an oil return filter.
Further, the outlet of the double-pressure double-flow plunger pump is output to a high-pressure pipeline through a one-way valve, the outlet end of the one-way valve is provided with a pressure gauge and is connected with a high-pressure overflow valve in a bypass mode, and the double-pressure double-flow plunger pump is driven by a motor.
The beneficial technical effects are as follows:
this patent adopts the subsystem of normally working includes: the pressure supply device respectively outputs working pressure to the high-pressure pipeline and the system pressure pipeline through the communication of the pressure switching device and stores the working pressure in the pressure energy storage device; the compaction work subsystem includes: the disconnection of pressure feed device through pressure switching device exports compaction pressure in high-pressure line to provide pressurize pressure for system pressure line by pressure energy memory, pressure feed device communicates in high-pressure line, high-pressure line passes through pressure switching device and links to each other or break system pressure line, system pressure line communicates in pressure energy memory, pressure feed device includes two pressure double flow plunger pumps, pressure switching device includes the solenoid directional valve, pressure energy memory includes the energy storage because this system exports two kinds of flow of two kinds of pressure through two pressure double flow plunger pumps to save hydraulic pump quantity, reduce installation space, utilize the energy storage to accomplish the pressurize, the stable performance, control is simple with low costs, utilizes the break-make of solenoid directional valve, conveniently controls the break-make of high-pressure line and system pressure line, through the operating pressure of the 10MPa large-traffic hydraulic oil that two pressure double flow plunger pumps provided and the small flow liquid of 21MPa liquid The compaction pressure of the pressing oil is switched by the pressure of the electromagnetic directional valve and the pressure of the energy accumulator is used for storing energy, so that the technological requirements of molding in the box-separating molding machine are met, the requirements of a normal working state and a compaction working state in molding are met, and the box-separating molding machine has the characteristics of low control cost, convenience in control, stable performance and small installation space.
Drawings
Fig. 1 is a schematic structural diagram of an accumulator pressure maintaining system of the present invention;
Detailed Description
The invention is further described below with reference to the accompanying drawings:
in the figure:
1-a pressure supply device, 2-a pressure switching device, 3-a high-pressure pipeline, 4-a system pressure pipeline, 5-a pressure energy storage device, 6-a double-pressure double-flow plunger pump, 7-an electromagnetic reversing valve, 8-an energy storage device, 9-a system overflow valve, 10-a high-pressure overflow valve, 11-an oil return pipeline, 12-an oil return filter, 13-a one-way valve, 14-a pressure gauge and 15-a motor;
example 1:
in this embodiment: as shown in fig. 1, an accumulator pressure maintaining system includes a normal work subsystem and a compaction work subsystem;
the normal operation subsystem includes:
the pressure supply device 1 respectively outputs working pressure to the high-pressure pipeline 3 and the system pressure pipeline 4 through the communication of the pressure switching device 2 and stores the working pressure in the pressure energy storage device 5;
the compaction work subsystem includes:
the pressure supply device 1 outputs the compaction pressure to the high-pressure pipeline 3 through the disconnection of the pressure switching device 2, and the pressure energy storage device 5 provides the holding pressure for the system pressure pipeline 4.
The pressure supply device 1 is communicated with a high-pressure pipeline 3, the high-pressure pipeline 3 is communicated with or disconnected from a system pressure pipeline 4 through a pressure switching device 2, and the system pressure pipeline 4 is communicated with a pressure energy storage device 5.
The pressure supply device 1 comprises a double-pressure double-flow plunger pump 6, the pressure switching device 2 comprises an electromagnetic directional valve 7, and the pressure energy storage device 5 comprises an energy storage device 8.
The normal working subsystem comprises: the pressure supply device respectively outputs working pressure to the high-pressure pipeline and the system pressure pipeline through the communication of the pressure switching device and stores the working pressure in the pressure energy storage device; the compaction work subsystem includes: the disconnection of pressure feed device through pressure switching device exports compaction pressure in high-pressure line to provide pressurize pressure for system pressure line by pressure energy memory, pressure feed device communicates in high-pressure line, high-pressure line passes through pressure switching device and links to each other or break system pressure line, system pressure line communicates in pressure energy memory, pressure feed device includes two pressure double flow plunger pumps, pressure switching device includes the solenoid directional valve, pressure energy memory includes the energy storage because this system exports two kinds of flow of two kinds of pressure through two pressure double flow plunger pumps to save hydraulic pump quantity, reduce installation space, utilize the energy storage to accomplish the pressurize, the stable performance, control is simple with low costs, utilizes the break-make of solenoid directional valve, conveniently controls the break-make of high-pressure line and system pressure line, through the operating pressure of the 10MPa large-traffic hydraulic oil that two pressure double flow plunger pumps provided and the small flow liquid of 21MPa liquid The compaction pressure of the pressing oil is switched by the pressure of the electromagnetic directional valve and the pressure of the energy accumulator is used for storing energy, so that the technological requirements of molding in the box-separating molding machine are met, the requirements of a normal working state and a compaction working state in molding are met, and the box-separating molding machine has the characteristics of low control cost, convenience in control, stable performance and small installation space.
The pressure supply device 1 outputs the working pressure to the high-pressure pipeline 3 and the system pressure pipeline 4 respectively through the communication of the pressure switching device 2, and stores the energy in the pressure energy storage device 5, and comprises:
when the double-pressure double-flow plunger pump works normally, the double-pressure double-flow plunger pump 6 outputs working pressure through the high-pressure pipeline 3, keeps the connection between the high-pressure pipeline 3 and the system pressure pipeline 4 through the electromagnetic directional valve 7, outputs the working pressure through the system pressure pipeline 4, and stores the working pressure into pressure maintaining pressure through the energy storage device 8 and keeps the working pressure of the high-pressure pipeline 3 and the system pressure pipeline 4;
the pressure supply device 1 outputs the compaction pressure to the high-pressure pipeline 3 through the disconnection of the pressure switching device 2, and the pressure energy storage device 5 provides the holding pressure for the system pressure pipeline 4, and the pressure supply device comprises:
when the compaction work is carried out, the double-pressure double-flow plunger pump 6 outputs compaction pressure through the high-pressure pipeline 3, the connection between the high-pressure pipeline 3 and the system pressure pipeline 4 is disconnected through the electromagnetic directional valve 7, the pressure maintaining pressure is provided by the energy accumulator 8 for the system pressure pipeline 4, the high-pressure pipeline 3 is kept at the compaction pressure, and the system pressure pipeline 4 is kept at the pressure maintaining pressure.
Because the dual-pressure dual-flow plunger pump outputs working pressure through the high-pressure pipeline and keeps the connection between the high-pressure pipeline and the system pressure pipeline through the electromagnetic reversing valve during normal work, the system pressure pipeline outputs working pressure, the energy accumulator stores the working pressure into pressure maintaining pressure and keeps the working pressure between the high-pressure pipeline and the system pressure pipeline, and during compaction work, the dual-pressure dual-flow plunger pump outputs compaction pressure through the high-pressure pipeline and breaks the connection between the high-pressure pipeline and the system pressure pipeline through the electromagnetic reversing valve, the system pressure pipeline provides the pressure maintaining pressure through the energy accumulator, keeps the compaction pressure of the high-pressure pipeline and keeps the pressure maintaining pressure of the system pressure pipeline, the system comprises an oil tank, an oil absorption filter, an oil return filter, a high-pressure overflow valve, an energy accumulator, a system, an oil return pipeline, a system pressure pipeline, a high-pressure pipeline, an, The double-pressure double-flow plunger pump comprises an electromagnetic directional valve, a pressure gauge, a one-way valve, a motor, a double-pressure double-flow plunger pump and the like, wherein the motor drives the double-pressure double-flow plunger pump to work. Two pressure double flow plunger pump mouths are connected with the check valve, and the check valve exit end is equipped with the manometer, and other high-pressure overflow valve that connects, high-pressure line pass through the solenoid directional valve and are connected with system pressure pipeline, and this system theory of operation is: during normal work, the double-pressure double-flow plunger pump outputs system pressure (10 MPa) high-flow hydraulic oil, the electromagnetic valve is electrified to enable the high-pressure pipeline to be connected with a system pressure pipeline, the system supplies oil to the energy accumulator at the moment, the high-pressure pipeline and the system pressure pipeline all output 10MPa pressure, during compaction work, the double-pressure double-flow plunger pump outputs high-pressure (21 MPa) low-flow hydraulic oil, the electromagnetic valve is powered off to enable the high-pressure pipeline to be disconnected with the system pressure pipeline, the high-pressure pipeline outputs high pressure through the double-pressure double-flow plunger pump at the moment, and the system pressure pipeline provides pressure maintaining pressure through the energy accumulator.
The double-pressure double-flow plunger pump 6 respectively outputs the working pressure of 10MPa high-flow hydraulic oil and the compaction pressure of 21MPa low-flow hydraulic oil in a time-sharing mode, and the pressure maintaining pressure is 10 MPa.
Because the double-pressure double-flow plunger pump is adopted to respectively output the working pressure of 10MPa high-flow hydraulic oil and the compaction pressure of 21MPa low-flow hydraulic oil in a time-sharing manner, and the pressure maintaining pressure is 10MPa, the control system utilizes the double-pressure double-flow plunger pump to output two flows of two pressures, the number of hydraulic pumps is saved, and the installation space is reduced.
The system pressure pipeline 4 is decompressed through a system overflow valve 9 when the system is abnormally overloaded, and the high-pressure pipeline 3 is decompressed through a high-pressure overflow valve 10 when the system is abnormally overloaded.
The system pressure pipeline is adopted to be decompressed through the system overflow valve when the system pressure pipeline is abnormally overloaded, the high-pressure pipeline is decompressed through the high-pressure overflow valve when the system pressure pipeline is abnormally overloaded, the system overflow valve is used for decompressing when the system pressure pipeline is abnormally overloaded, the high-pressure overflow valve is used for decompressing when the high-pressure pipeline is abnormally overloaded, and the system overflow valve and the high-pressure overflow valve are respectively arranged at the system pressure pipeline and the high-pressure pipeline, so that the safety and the reliability of the system are ensured.
The accumulator pressure maintaining system further comprises an oil return subsystem, and the oil return subsystem is connected to the high-pressure pipeline 3 and the system pressure pipeline 4 respectively.
The oil return subsystem comprises an oil return pipeline 11, one input end of the oil return pipeline 11 is connected to the system pressure pipeline 4 through a system overflow valve 9, the other input end of the oil return pipeline is connected to the high-pressure pipeline 3 through a high-pressure overflow valve 10, and an oil return end of the oil return pipeline 11 is connected with an oil return filter 12.
Owing to adopt accumulator pressurize system still includes the oil return subsystem, the oil return subsystem is connected respectively in high-pressure line and system pressure pipeline, the oil return subsystem is including returning oil pipe way, return oil pipe way input end and connect in system pressure pipeline through the system overflow valve, and its another input is connected in high-pressure line through the high-pressure overflow valve, return oil pipe way's time oil end connection return oil filter, because high-pressure line passes through the solenoid directional valve and is connected with system pressure pipeline. An energy accumulator and a system overflow valve are arranged at the pressure pipeline of the system, and an oil return filter is arranged on the oil return pipeline, so that the safety and the reliability of the system are ensured, and the smoothness of an oil way is ensured.
The outlet of the double-pressure double-flow plunger pump 6 is output to the high-pressure pipeline 3 through a check valve 13, the outlet end of the check valve 13 is provided with a pressure gauge 14 and is in bypass connection with a high-pressure overflow valve 10, and the double-pressure double-flow plunger pump 6 is driven by a motor 15.
The double-pressure double-flow plunger pump is driven by the motor, the outlet of the double-pressure double-flow plunger pump is connected with the check valve, the outlet end of the check valve is provided with the pressure gauge, and the high-pressure overflow valve is connected beside the outlet of the check valve, so that the stability of the system is improved.
The working principle is as follows:
this patent passes through the normal work subsystem includes: the pressure supply device respectively outputs working pressure to the high-pressure pipeline and the system pressure pipeline through the communication of the pressure switching device and stores the working pressure in the pressure energy storage device; the compaction work subsystem includes: the disconnection of pressure feed device through pressure switching device exports compaction pressure in high-pressure line to provide pressurize pressure for system pressure line by pressure energy memory, pressure feed device communicates in high-pressure line, high-pressure line passes through pressure switching device and links to each other or break system pressure line, system pressure line communicates in pressure energy memory, pressure feed device includes two pressure double flow plunger pumps, pressure switching device includes the solenoid directional valve, pressure energy memory includes the energy storage because this system exports two kinds of flow of two kinds of pressure through two pressure double flow plunger pumps to save hydraulic pump quantity, reduce installation space, utilize the energy storage to accomplish the pressurize, the stable performance, control is simple with low costs, utilizes the break-make of solenoid directional valve, conveniently controls the break-make of high-pressure line and system pressure line, through the operating pressure of the 10MPa large-traffic hydraulic oil that two pressure double flow plunger pumps provided and the small flow liquid of 21MPa liquid The compaction pressure of pressing oil switches through the pressure of solenoid directional valve to and the pressure energy storage of accumulator, has satisfied molding technological requirement in the slip flask molding machine, and has accomplished the needs of normal operating condition and compaction operating condition in the molding, the utility model provides a prior art exist because many pumps parallel operation, it has the problem of control cost height, system vibration is big, calorific capacity is big, the big scheduling shortcoming of consumed power, has control cost low, be convenient for control and stable performance and the little beneficial technological effect of installation space.
Utilize the technical scheme of the utility model, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (10)
1. An accumulator pressure maintaining system is characterized by comprising a normal working subsystem and a compaction working subsystem;
the normal operation subsystem includes:
the pressure supply device respectively outputs working pressure to the high-pressure pipeline and the system pressure pipeline through the communication of the pressure switching device and stores the working pressure in the pressure energy storage device;
the compaction work subsystem includes:
the pressure supply device outputs the compaction pressure to the high-pressure pipeline through the disconnection of the pressure switching device, and the pressure energy storage device provides the holding pressure for the system pressure pipeline.
2. An accumulator dwell system as claimed in claim 1, wherein the pressure supply means communicates with a high pressure line which communicates with or disconnects a system pressure line via a pressure switching means, the system pressure line communicating with the pressure storage means.
3. An accumulator dwell system as claimed in claim 2, wherein the pressure supply means comprises a dual pressure dual flow plunger pump, the pressure switching means comprises a solenoid directional valve and the pressure energy storage means comprises an accumulator.
4. The accumulator dwelling system of claim 3, wherein the pressure supply device outputs the working pressure to the high pressure line and the system pressure line through communication of the pressure switching device, respectively, and stores the energy in the pressure energy storage device comprises:
when the double-pressure double-flow plunger pump works normally, working pressure is output by the double-pressure double-flow plunger pump through the high-pressure pipeline, the connection between the high-pressure pipeline and the system pressure pipeline is kept through the electromagnetic reversing valve, the system pressure pipeline outputs the working pressure, the working pressure is stored into pressure maintaining pressure by the energy storage device, and the high-pressure pipeline and the system pressure pipeline are kept at the working pressure.
5. An accumulator dwell system as claimed in claim 4, wherein the pressure supply means outputs compaction pressure to the high pressure line by disconnection of the pressure switching means, and the supply of dwell pressure to the system pressure line by the pressure storage means comprises:
when the compaction work is carried out, the double-pressure double-flow plunger pump outputs compaction pressure through the high-pressure pipeline, the connection between the high-pressure pipeline and the system pressure pipeline is disconnected through the electromagnetic directional valve, the system pressure pipeline provides pressure maintaining pressure through the energy accumulator, and the high-pressure pipeline keeps the compaction pressure and the system pressure pipeline keeps the pressure maintaining pressure.
6. The accumulator pressure maintaining system according to claim 5, wherein the dual-pressure dual-flow plunger pump respectively outputs a working pressure of 10MPa of large-flow hydraulic oil and a compaction pressure of 21MPa of small-flow hydraulic oil in a time-sharing manner, and the pressure maintaining pressure is 10 MPa.
7. An accumulator dwell system as claimed in claim 6, wherein the system pressure line is vented through a system relief valve in the event of an abnormal overload, and the high pressure line is vented through a high pressure relief valve in the event of an abnormal overload.
8. The accumulator dwell system of claim 3, further comprising an oil return subsystem connected to the high pressure line and the system pressure line, respectively.
9. The accumulator pressure maintaining system according to claim 8, wherein the oil return subsystem comprises an oil return pipeline, one input end of the oil return pipeline is connected to the system pressure pipeline through a system overflow valve, the other input end of the oil return pipeline is connected to the high pressure pipeline through a high pressure overflow valve, and an oil return end of the oil return pipeline is connected to an oil return filter.
10. The accumulator pressure maintaining system according to claim 7, wherein the outlet of the double-pressure double-flow plunger pump is output to a high-pressure pipeline through a check valve, the outlet end of the check valve is provided with a pressure gauge and is connected with a high-pressure overflow valve in a bypassing manner, and the double-pressure double-flow plunger pump is driven by a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921320426.XU CN210660778U (en) | 2019-08-15 | 2019-08-15 | Accumulator pressure maintaining system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921320426.XU CN210660778U (en) | 2019-08-15 | 2019-08-15 | Accumulator pressure maintaining system |
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| Publication Number | Publication Date |
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| CN210660778U true CN210660778U (en) | 2020-06-02 |
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| CN201921320426.XU Active CN210660778U (en) | 2019-08-15 | 2019-08-15 | Accumulator pressure maintaining system |
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- 2019-08-15 CN CN201921320426.XU patent/CN210660778U/en active Active
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