CN106200702B - Ultra-high pressure direct-drive pump pressure regulation control system and method - Google Patents
Ultra-high pressure direct-drive pump pressure regulation control system and method Download PDFInfo
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- CN106200702B CN106200702B CN201610789946.XA CN201610789946A CN106200702B CN 106200702 B CN106200702 B CN 106200702B CN 201610789946 A CN201610789946 A CN 201610789946A CN 106200702 B CN106200702 B CN 106200702B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses an ultra-high pressure direct-drive pump pressure regulation control system, which comprises an ultra-high pressure direct-drive pump for providing high-pressure water for water knife cutting and a motor for driving the ultra-high pressure direct-drive pump to work; the output end of the ultrahigh-pressure direct-drive pump is provided with a current collecting block, the current collecting block is provided with a water inlet end for respectively introducing low-pressure water and a water outlet end for introducing high-pressure water, and the current collecting block is provided with a pressure regulating device capable of regulating the water pressure of the water outlet end. The invention also discloses a pressure regulation control method of the ultra-high pressure direct-drive pump, which comprises a low-pressure conversion step and a high-pressure conversion step. The pressure regulating and controlling system and method for the ultra-high pressure direct-drive pump have the advantages that the water pressure regulating mode is simple, and the materials cut by the water knife are wider, such as brittle materials like glass.
Description
Technical Field
The invention relates to the field of water jet cutting, in particular to an ultrahigh-pressure direct-drive pump pressure adjusting and controlling system and method.
Background
At present, in the process of cutting by a water jet, the water pressure of a water jet nozzle is difficult to adjust, and when a part of a material workpiece is cut, the workpiece is easily broken due to overlarge water pressure.
Disclosure of Invention
The invention aims to provide an ultrahigh-pressure direct-drive pump pressure regulation control system and method, wherein the water pressure regulation mode is simple, and materials cut by a water knife are wider, such as brittle materials like glass.
In order to achieve the above purpose, the invention provides an ultra-high pressure direct-drive pump pressure regulation control system, which comprises an ultra-high pressure direct-drive pump for providing high pressure water for water jet cutting and a motor for driving the water jet cutting to work; the output end of the ultrahigh-pressure direct-drive pump is provided with a current collecting block, the current collecting block is provided with a water inlet end for respectively introducing low-pressure water and a water outlet end for introducing high-pressure water, and the current collecting block is provided with a pressure regulating device capable of regulating the water pressure of the water outlet end.
As a further improvement of the invention, the current collecting block is provided with an unloading end communicated with the water outlet end, and the pressure regulating device comprises an unloading valve which is connected with the unloading end.
As a further improvement of the invention, the unloading valve is a pneumatic unloading valve, and a control end for controlling the opening and closing of the unloading valve by air pressure is arranged on the unloading valve.
As a further improvement of the invention, the pressure regulating device comprises an electromagnetic directional valve, wherein the electromagnetic directional valve is provided with an input end for connecting high-pressure gas, and is also provided with a low-pressure output end and a high-pressure output end, and a low-pressure pipe and a high-pressure pipe are respectively connected between the low-pressure output end and the high-pressure output end and the control end of the unloading valve.
As a further improvement of the invention, the low pressure pipe is provided with a low pressure regulating valve, and the high pressure pipe is provided with a high pressure regulating valve.
As a further improvement of the invention, the low-pressure pipe is provided with a low-pressure one-way valve, and the high-pressure pipe is provided with a high-pressure one-way valve.
The pressure regulation control method for the ultra-high pressure direct-drive pump is characterized by comprising the following steps of:
1) A low-voltage conversion step: before a water knife is used for cutting a machined part, a pressure regulating device is controlled, so that the water outlet pressure of a water outlet end on a current collecting block is reduced; the water pressure of the water jet nozzle can then be used to break down the workpiece without breaking it.
2) High-voltage conversion step: controlling the pressure regulating device to increase the water outlet pressure of the water outlet end; at the moment, the water knife nozzle can cut the workpiece by using higher water pressure.
As a further improvement of the present invention, the low pressure switching step includes an unloading valve opening step: the control end of the unloading valve is connected with low-pressure gas, so that the unloading valve is opened, and part of high-pressure water in the collecting block sequentially flows through the unloading end and the unloading valve, so that the water pressure of the water outlet end is reduced; the high-pressure conversion step comprises an unloading valve closing step: the control end of the unloading valve is connected with high-pressure gas, so that the unloading valve is closed, and the water pressure at the water outlet end is recovered.
As a still further improvement of the present invention, the unloading valve opening step is preceded by a low-pressure pipe communicating step of: controlling the electromagnetic reversing valve to enable the low-pressure pipe to be communicated and the high-pressure pipe to be disconnected; the unloading valve closing step is preceded by a high-pressure pipe communicating step: and controlling the electromagnetic reversing valve to disconnect the low-pressure pipe and connect the high-pressure pipe.
As a still further improvement of the present invention, the low pressure pipe communication step is further provided with a pressure setting step: and regulating the pressure values of the low-pressure regulating valve and the high-pressure regulating valve according to the pressure threshold value required by opening and closing the control end of the unloading valve.
Advantageous effects
Compared with the prior art, the ultra-high pressure direct-drive pump pressure regulation control system and method have the following advantages:
1. the pressure regulating device can regulate the water pressure of the water outlet end of the collecting block, so as to regulate the water pressure during cutting by the water knife, and thus, the machined piece is cut by proper water pressure; when a workpiece which is easy to break is cut, the workpiece is broken down by using lower water pressure, and then is cut by using higher water pressure, so that the occurrence probability of fracture is reduced;
2. the current collecting block is connected with an unloading valve, and the water pressure of the water outlet end is regulated by opening or closing the unloading valve, so that the structure is simple, and the operation is convenient;
3. the unloading valve is pneumatically operated, and the opening and closing of the unloading valve are controlled by inputting high-pressure gas or low-pressure gas, so that the unloading valve is simple in structure, convenient to maintain and convenient to operate;
4. the electromagnetic reversing valve is used for controlling whether the high-pressure gas enters the electromagnetic reversing valve to pass through the high-pressure pipe or the low-pressure pipe, so that the high-pressure gas and the low-pressure gas do not need to be simultaneously connected, the structure is simpler, and the cost is reduced;
5. the pressure in the low-pressure pipe and the pressure in the high-pressure pipe can be corrected respectively by adjusting the low-pressure regulating valve and the high-pressure regulating valve, so that the normal operation of opening and closing the unloading valve is ensured;
6. the low-pressure check valve and the high-pressure check valve can prevent air pressure entering one pipeline from entering the other pipeline, so that the condition of insufficient air pressure is avoided.
The invention will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an ultra-high pressure direct-drive pump pressure regulating control system according to the present invention.
In the figure, a 1, ultra-high pressure direct drive pump; 2. a motor; 3. a current collecting block; 4. a water inlet end; 5. a water outlet end; 6. an unloading end; 7. an unloading valve; 8. a low pressure check valve; 9. a low pressure regulating valve; 10. a high pressure check valve; 11. a high pressure regulating valve; 12. an electromagnetic reversing valve; 13. a low pressure tube; 14. a high pressure tube.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Example 1
The embodiment of the invention is shown in fig. 1, and the pressure regulation control system of the ultra-high pressure direct-drive pump comprises an ultra-high pressure direct-drive pump 1 for providing high-pressure water for water jet cutting and a motor 2 for driving the ultra-high pressure direct-drive pump 1 to work, wherein the motor 2 is a servo motor. The output end of the ultrahigh-pressure direct-drive pump 1 is provided with a current collecting block 3. The collecting block 3 is provided with a water inlet end 4 for respectively leading low-pressure water and a water outlet end 5 for leading high-pressure water. The water inlet end 4 is used for introducing external low-pressure water into the collecting block 3; the high-pressure water flow pressurized by the ultrahigh-pressure direct-drive pump 1 flows out from the water outlet end 5 and enters the water knife head. The current collecting block 3 is connected with a pressure regulating device which can regulate the water pressure of the water outlet end 5. The pressure regulating device can regulate the water pressure of the water outlet end 5, so as to regulate the water pressure during cutting by the water knife, thereby cutting the workpiece by proper water pressure; when a workpiece which is easy to break is cut, the workpiece is broken down by using lower water pressure, and then the workpiece is cut by using higher water pressure, so that the occurrence probability of fracture is reduced.
The current collecting block 3 is provided with an unloading end 6 communicated with the water outlet end 5, and the pressure regulating device comprises an unloading valve 7, and the unloading valve 7 is connected with the unloading end 6. The unloading valve 7 is opened or closed to adjust the water pressure of the water outlet end 5, so that the device has a simple structure and is convenient to operate.
The unloading valve 7 is a pneumatic unloading valve, and a control end is arranged on the unloading valve 7. The unloading valve 7 is controlled to be opened and closed by inputting high-pressure gas or low-pressure gas into the control end, so that the device is simple in structure, convenient to maintain and convenient to operate.
The pressure regulating device comprises an electromagnetic directional valve 12, and the electromagnetic directional valve 12 is provided with an input end which is used for connecting high-pressure gas. The electromagnetic directional valve 12 is also provided with a low-pressure output end and a high-pressure output end, and a low-pressure pipe 13 and a high-pressure pipe 14 are respectively connected between the low-pressure output end and the high-pressure output end and the control end of the unloading valve 7. The electromagnetic directional valve 12 can control whether the high-pressure gas entering the electromagnetic directional valve passes through the high-pressure pipe 14 or the low-pressure pipe 13, and the high-pressure gas and the low-pressure gas do not need to be simultaneously connected, so that the structure is simpler, and the cost is reduced.
The low pressure pipe 13 is provided with a low pressure regulating valve 9, and the high pressure pipe 14 is provided with a high pressure regulating valve 11. By adjusting the low-pressure regulating valve 9 and the high-pressure regulating valve 11, the pressures in the low-pressure pipe 13 and the high-pressure pipe 14 can be respectively corrected, and the normal operation of opening and closing the unloading valve 7 is ensured.
The low-pressure pipe 13 is provided with a low-pressure check valve 8, and the high-pressure pipe 14 is provided with a high-pressure check valve 10. The low-pressure check valve 8 and the high-pressure check valve 10 are respectively positioned behind the low-pressure regulating valve 9 and the high-pressure regulating valve 11 along the air flow direction. The low-pressure check valve 8 and the high-pressure check valve 10 can prevent air pressure entering one pipeline from entering the other pipeline, so that the condition that the unloading valve 7 cannot be driven due to insufficient air pressure is avoided.
The pressure regulation control method of the ultrahigh-pressure direct-drive pump comprises the following steps:
1) A pressure setting step: according to the pressure threshold value required by opening and closing the control end of the unloading valve 7, the pressure values of the low-pressure regulating valve 9 and the high-pressure regulating valve 11 are regulated so as to ensure that the unloading valve 7 can be normally opened and closed in the use process;
2) A low-pressure pipe communicating step: the electromagnetic directional valve 12 is controlled to connect the low-pressure pipe 13 and disconnect the high-pressure pipe 14;
3) Opening an unloading valve: the unloading valve 7 is opened by low-pressure gas, and part of high-pressure water in the collecting block 3 flows through the unloading end 6 and the unloading valve 7 in sequence, so that the water pressure of the water outlet end 5 is reduced; the water pressure of the water jet nozzle can be used for puncturing the workpiece without breaking the workpiece;
4) And a high-pressure pipe communicating step: the electromagnetic directional valve 12 is controlled to disconnect the low-pressure pipe 13 and connect the high-pressure pipe 14;
5) And closing an unloading valve: the unloading valve 7 is closed by the high-pressure gas, and the water pressure of the water outlet end 5 is recovered; at the moment, the water knife nozzle can cut the workpiece by using higher water pressure.
The invention has been described in connection with the preferred embodiments, but the invention is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the invention.
Claims (5)
1. An ultra-high pressure direct-drive pump pressure regulation control system comprises an ultra-high pressure direct-drive pump (1) for providing high-pressure water for water jet cutting and a motor (2) for driving the ultra-high pressure direct-drive pump to work; the method is characterized in that: the output end of the ultrahigh-pressure direct-drive pump (1) is provided with a current collecting block (3), the current collecting block (3) is provided with a water inlet end (4) for respectively communicating low-pressure water and a water outlet end (5) for communicating high-pressure water, and the current collecting block (3) is provided with a pressure regulating device capable of regulating the water pressure of the water outlet end (5); an unloading end (6) communicated with the water outlet end (5) is arranged on the collecting block (3), and the pressure regulating device comprises an unloading valve (7), wherein the unloading valve (7) is connected with the unloading end (6); the unloading valve (7) is a pneumatic unloading valve, and a control end for controlling the opening and closing of the unloading valve (7) by air pressure is arranged on the unloading valve (7); the pressure regulating device comprises an electromagnetic reversing valve (12), wherein the electromagnetic reversing valve (12) is provided with an input end for accessing high-pressure gas, and is also provided with a low-pressure output end and a high-pressure output end, and a low-pressure pipe (13) and a high-pressure pipe (14) are respectively connected between the low-pressure output end and the high-pressure output end and the control end of the unloading valve (7).
2. The ultra-high pressure direct-drive pump pressure regulation control system according to claim 1, wherein the low pressure pipe (13) is provided with a low pressure regulating valve (9), and the high pressure pipe (14) is provided with a high pressure regulating valve (11).
3. The ultra-high pressure direct-drive pump pressure regulation control system according to claim 1 or 2, wherein the low pressure pipe (13) is provided with a low pressure one-way valve (8), and the high pressure pipe (14) is provided with a high pressure one-way valve (10).
4. The pressure regulation control method for the ultra-high pressure direct-drive pump is characterized by comprising the following steps of:
1) A low-voltage conversion step: before a water knife is used for cutting a machined part, a pressure regulating device is controlled to reduce the water outlet pressure of a water outlet end (5) on the collecting block (3); the water pressure of the water jet nozzle can be used for puncturing the workpiece without breaking the workpiece;
2) High-voltage conversion step: controlling the pressure regulating device to increase the water outlet pressure of the water outlet end (5); at the moment, the water knife nozzle can cut a workpiece by using higher water pressure;
the low pressure conversion step comprises an unloading valve opening step: the control end of the unloading valve (7) is connected with low-pressure gas, so that the unloading valve (7) is opened, and part of high-pressure water in the collecting block (3) sequentially flows through the unloading end (6) and the unloading valve (7), so that the water pressure of the water outlet end (5) is reduced; the high-pressure conversion step comprises an unloading valve closing step: the control end of the unloading valve (7) is connected with high-pressure gas, so that the unloading valve (7) is closed, and the water pressure of the water outlet end (5) is recovered;
the unloading valve opening step is preceded by a low-pressure pipe communicating step: controlling the electromagnetic directional valve (12) to enable the low-pressure pipe (13) to be communicated and the high-pressure pipe (14) to be disconnected; the unloading valve closing step is preceded by a high-pressure pipe communicating step: the electromagnetic directional valve (12) is controlled to disconnect the low-pressure pipe (13) and connect the high-pressure pipe (14).
5. The pressure regulation control method of an ultra-high pressure direct drive pump according to claim 4, wherein the low pressure pipe communication step is further preceded by a pressure setting step of: and the pressure values of the low-pressure regulating valve (9) and the high-pressure regulating valve (11) are regulated according to the pressure threshold value required by opening and closing the control end of the unloading valve (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610789946.XA CN106200702B (en) | 2016-08-31 | 2016-08-31 | Ultra-high pressure direct-drive pump pressure regulation control system and method |
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| CN201610789946.XA CN106200702B (en) | 2016-08-31 | 2016-08-31 | Ultra-high pressure direct-drive pump pressure regulation control system and method |
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| CN106200702B true CN106200702B (en) | 2023-05-16 |
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| WO2016091528A1 (en) * | 2014-12-08 | 2016-06-16 | Robert Bosch Gmbh | Hydraulic valve arrangement, hydraulic valve block with such a valve arrangement, and hydraulic drive comprising such a valve block |
| CN205983247U (en) * | 2016-08-31 | 2017-02-22 | 广州华臻机械设备有限公司 | Superelevation straightening drives pump pressure regulation control system |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09100804A (en) * | 1995-10-02 | 1997-04-15 | Hitachi Constr Mach Co Ltd | Hydraulic driving system and valve device used for it |
| CN201212495Y (en) * | 2008-07-16 | 2009-03-25 | 陈波 | Balance type pressure regulating system for ultra-high pressure washer |
| CN201740702U (en) * | 2010-07-07 | 2011-02-09 | 济南试金集团有限公司 | Hydraulic system of horizontal push butt clamp type test machine |
| CN102398226A (en) * | 2011-11-25 | 2012-04-04 | 江苏大学 | Optimized control method for cutting speed of water jet based on pressure sensor |
| CN202479978U (en) * | 2012-02-01 | 2012-10-10 | 佛山市金福板业有限公司 | Self-circulating cold-state processing water cutting apparatus |
| CN102607960A (en) * | 2012-04-16 | 2012-07-25 | 公安部天津消防研究所 | Measurement and control system for hydraulic test |
| CN203712516U (en) * | 2014-03-20 | 2014-07-16 | 周明锋 | Jet cutting equipment for low-pressure abrasive slurry |
| WO2016091528A1 (en) * | 2014-12-08 | 2016-06-16 | Robert Bosch Gmbh | Hydraulic valve arrangement, hydraulic valve block with such a valve arrangement, and hydraulic drive comprising such a valve block |
| CN104589410A (en) * | 2015-01-14 | 2015-05-06 | 南京大地水刀股份有限公司 | Food water cutting device and food water cutting method |
| CN204546678U (en) * | 2015-03-05 | 2015-08-12 | 南安市正能机械有限公司 | A kind of have the water-jet cutting machine improving water under high pressure generation systems |
| CN205983247U (en) * | 2016-08-31 | 2017-02-22 | 广州华臻机械设备有限公司 | Superelevation straightening drives pump pressure regulation control system |
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| CN106200702A (en) | 2016-12-07 |
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