CA3072526C - Multipurpose multi-stage hydraulic pressurizer with variable pressurization rate - Google Patents
Multipurpose multi-stage hydraulic pressurizer with variable pressurization rate Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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Abstract
A multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate is provided. The pressurizer comprises a multi-stage pressurizing structure part, a hydraulic oil loop having a control part, and a pressurizing fluid loop having a control part. The multi-stage pressurizing structure comprises a hydraulic cavity, a first-stage pressurizing cavity, a second-stage pressurizing cavity and a third-stage pressurizing cavity. The hydraulic oil loop comprises an electromagnetic stroke limit switch, a three-position four-way electromagnetic reversing valve, a controller, a hydraulic oil inlet and a hydraulic oil return port. The pressurizing fluid loop comprises a one-way valve, a hydraulic control one-way valve, a two-position two-way electromagnetic reversing valve, a pressurizing fluid inlet, a non-pressurizing-fluid outlet and a pressurizing fluid outlet. The multi-stage multipurpose hydraulic pressurizer can output high-pressure fluids, either water or hydraulic oil, with different pressurizing rates under the action of the multi-stage structure part, dispensing the need to change pressurizers.
Description
MULTIPURPOSE MULTI-STAGE HYDRAULIC PRESSURIZER
WITH VARIABLE PRESSURIZATION RATE
FIELD OF THE INVENTION
100011 The present invention relates to a pressurizer, and specifically, to a multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate, and belongs to the technical field of hydraulic control apparatuses.
DESCRIPTION OF RELATED ART
WITH VARIABLE PRESSURIZATION RATE
FIELD OF THE INVENTION
100011 The present invention relates to a pressurizer, and specifically, to a multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate, and belongs to the technical field of hydraulic control apparatuses.
DESCRIPTION OF RELATED ART
[0002] In an industrial device, a hydraulic driving system is generally classified into a low pressure system and a high pressure system. If a device driven by the low pressure system has a part that needs to be driven by the high pressure system, an oil line needs to be branched from the low pressure system, and a hydraulic pressurizer is mounted in the oil line, so that low pressure oil of the low pressure system is converted into high pressure oil or even extra-high pressure oil needed by the high pressure system, which is convenient and useful.
[0003] A traditional hydraulic pressurizer includes a base, a low pressure cylinder, a junction valve, a high pressure cylinder, a cylinder head, a piston, a plunger and a control tool such as an electromagnetic reversing valve, and hydraulic pressurizers with different pressurization multiples are formed by pistons and plungers with different areas. By using one end of a piston with a larger hydraulic oil driving area, a plunger with a smaller area is pushed to move, so that the high pressure cylinder cooperating with the plunger may output high pressure hydraulic oil. However, a traditional pressurizer such as a pressurizer on a machine tool can only perform one pressurization, and then the pressurizer needs to return to perform a pressurization again, where continuous pressurizations cannot be performed. Further, when different multiples of pressurization pressures need to be used, the pressurizer needs to be removed and replaced to achieve an ideal effect, where a procedure of removing and mounting is complex and wastes much time and effort, which lacks economic efficiency and practicality. In addition, the traditional pressurizer mostly has only one oil inlet, one oil return port and one high pressure oil outlet, and a pressurization object is only the hydraulic oil. For different fluids, pressurizations cannot be implemented, which limits a using range.
SUMMARY OF THE INVENTION
Technical Problem
SUMMARY OF THE INVENTION
Technical Problem
[0004] To overcome defects existing in the prior art, the present invention provides a multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate, where the pressurizer is used for fluid pressurization in which a driving medium is different from a pressurizing medium, and also has a plurality of pressurization multiples, a simple structure, easy maintenance and a wide application range.
Technical Solution
Technical Solution
[0005] To resolve the foregoing problem, the present invention provides a multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate, including a multi-stage pressurizing structure, a hydraulic oil loop and a control part thereof, and a pressurizing fluid loop and a control part thereof. The multi-stage pressurizing structure includes a pressurizer housing, high pressure cylinder heads connected to two ends of the pressurizer housing, a piston disposed inside the pressurizer housing, a piston rod installed on two ends of the piston and a junction valve body. A
fluid in the pressurizing fluid loop and a fluid in the hydraulic oil loop use a same medium or different media. The piston in the housing includes a transmission piston, two first-stage pressurizing pistons, two second-stage pressurizing pistons, and two third-stage pressurizing pistons. The transmission piston is disposed in the middle of the pressurizer housing, the first-stage pressurizing pistons are symmetrically connected to two sides of the transmission piston through a first-stage piston rod, the second-stage pressurizing pistons are symmetrically connected to two sides of the first-stage pressurizing pistons through a second-stage piston rod, and the third-stage pressurizing pistons are symmetrically connected to two sides of the second-stage pressurizing pistons through a third-stage piston rod. Areas of the transmission piston, the first-stage pressurizing pistons, the second-stage pressurizing pistons and the third-stage pressurizing pistons decrease sequentially in proportion. The transmission piston and the two first-stage pressurizing pistons respectively form two hydraulic oil cavities on the left and the right, the two first-stage pressurizing pistons and the two second-stage pressurizing pistons respectively form two first-stage pressurizing cavities on the left and the right, the two second-stage pressurizing pistons and the two third-stage pressurizing pistons respectively form two second-stage pressurizing cavities on the left and the right, and two third-stage pressurizing cavities are respectively formed on the left and the right between the two third-stage pressurizing pistons and the high pressure cylinder heads on two sides.
fluid in the pressurizing fluid loop and a fluid in the hydraulic oil loop use a same medium or different media. The piston in the housing includes a transmission piston, two first-stage pressurizing pistons, two second-stage pressurizing pistons, and two third-stage pressurizing pistons. The transmission piston is disposed in the middle of the pressurizer housing, the first-stage pressurizing pistons are symmetrically connected to two sides of the transmission piston through a first-stage piston rod, the second-stage pressurizing pistons are symmetrically connected to two sides of the first-stage pressurizing pistons through a second-stage piston rod, and the third-stage pressurizing pistons are symmetrically connected to two sides of the second-stage pressurizing pistons through a third-stage piston rod. Areas of the transmission piston, the first-stage pressurizing pistons, the second-stage pressurizing pistons and the third-stage pressurizing pistons decrease sequentially in proportion. The transmission piston and the two first-stage pressurizing pistons respectively form two hydraulic oil cavities on the left and the right, the two first-stage pressurizing pistons and the two second-stage pressurizing pistons respectively form two first-stage pressurizing cavities on the left and the right, the two second-stage pressurizing pistons and the two third-stage pressurizing pistons respectively form two second-stage pressurizing cavities on the left and the right, and two third-stage pressurizing cavities are respectively formed on the left and the right between the two third-stage pressurizing pistons and the high pressure cylinder heads on two sides.
[0006] The hydraulic oil loop includes a hydraulic oil inlet and a hydraulic oil return port, and the control part of the hydraulic oil loop includes a three-position four-way electromagnetic reversing valve. Hydraulic oil enters the hydraulic oil cavity on one side from the oil inlet through the three-position four-way electromagnetic reversing valve, and hydraulic oil in the hydraulic oil cavity on the other side returns to the hydraulic oil return port through the three-position four-way electromagnetic reversing valve.
[0007] The pressurizing fluid loop includes a pressurizing fluid inlet, a non-pressurizing-fluid outlet and a pressurizing fluid outlet, and the control part of the pressurizing fluid loop includes hydraulic control one-way valves, two-position two-way electromagnetic reversing valves and two-position three-way electromagnetic reversing valves. A low pressure fluid entering from the pressurizing fluid inlet respectively enters the first-stage pressurizing cavities, the second-stage pressurizing cavities and the third-stage pressurizing cavities, right positions of three two-position three-way electromagnetic reversing valves are shunted to the hydraulic oil cavity on one side, a left position of a first two-position three-way electromagnetic reversing valve is connected to a control port of a first hydraulic control one-way valve, a left position of a second two-position three-way electromagnetic reversing valve is connected to a control port of a second hydraulic control one-way valve, and a left position of a third two-position three-way electromagnetic reversing valve is connected to a control port of a third hydraulic control one-way valve. A
fluid flowing out through the first-stage pressurizing cavities is respectively connected to the first hydraulic control one-way valve and an oil inlet of a first two-position two-way electromagnetic reversing valve, a fluid flowing out through the second-stage pressurizing cavities is respectively connected to the second hydraulic control one-way valve and an oil inlet of a second two-position two-way electromagnetic reversing valve, a fluid flowing out through the third-stage pressurizing cavities is respectively connected to the third hydraulic control one-way valve and an oil inlet of a third two-position two-way electromagnetic reversing valve, oil outlets of the three hydraulic control one-way valves are shunted to the pressurizing fluid outlet, and oil = CA 03072526 2020-02-10 outlets of the three two-position two-way electromagnetic reversing valves are shunted to the non-pressurizing-fluid outlet.
fluid flowing out through the first-stage pressurizing cavities is respectively connected to the first hydraulic control one-way valve and an oil inlet of a first two-position two-way electromagnetic reversing valve, a fluid flowing out through the second-stage pressurizing cavities is respectively connected to the second hydraulic control one-way valve and an oil inlet of a second two-position two-way electromagnetic reversing valve, a fluid flowing out through the third-stage pressurizing cavities is respectively connected to the third hydraulic control one-way valve and an oil inlet of a third two-position two-way electromagnetic reversing valve, oil outlets of the three hydraulic control one-way valves are shunted to the pressurizing fluid outlet, and oil = CA 03072526 2020-02-10 outlets of the three two-position two-way electromagnetic reversing valves are shunted to the non-pressurizing-fluid outlet.
[0008] The two-position two-way electromagnetic reversing valves, the three-position four-way electromagnetic reversing valve and the two-position three-way electromagnetic reversing valves are controlled by signals of a controller.
[0009] In the pressurizing structure part, a bidirectional reciprocation structure and a third-stage pressurizing structure are used, and the first-stage pressurizing cavities on two sides are pushed to perform a left and right reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet and returns to the hydraulic oil return port, where the hydraulic force is passed from the transmission piston pushed by the hydraulic oil cavities on two sides to the first-stage piston rod. The second-stage pressurizing cavities on two sides are pushed to perform a reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet and returns to the hydraulic oil return port, where the hydraulic force is passed from the transmission piston pushed by the hydraulic oil cavities on two sides to the first-stage piston rod, the second-stage pressurizing piston and the second-stage piston rod. The third-stage pressurizing cavities on two sides are pushed to perform a reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet and returns to the hydraulic oil return port, where the hydraulic force is passed from the transmission piston pushed by the hydraulic oil cavities on two sides to the first-stage piston rod, the second-stage pressurizing piston, the third-stage piston rod and the third-stage pressurizing piston. Pressurization rate combinations of different pressurizers can be achieved according to different volume changing combinations of different pressurizing cavities under combined action of the controller and divided flow in each line. Hydraulic oil reaches the three-position four-way electromagnetic reversing valve from the hydraulic oil inlet. When a pressurization is performed to the right, the controller controls the three-position four-way electromagnetic reversing valve to be in a left position, and when a pressurization is performed to the left, the controller controls the three-position four-way electromagnetic reversing valve to be in a right position. A cavity that does not need to be pressurized needs to be controlled by the controller to be in the right position with a two-position three-way electromagnetic reversing valve connected to the cavity, to participate in a loop fluid supply pushed by hydraulic pressure in a reciprocating manner. A cavity that needs to = CA 03072526 2020-02-10 be pressurized needs to be controlled by the controller to be in the left position with a two-position three-way electromagnetic reversing valve connected to the cavity, to control a fluid supply to an oil inlet of a hydraulic control one-way valve connected to the cavity, and further control opening of a fluid line in which the hydraulic control one-way valve is located. The two-position two-way electromagnetic reversing valve and the hydraulic control one-way valve are controlled in complementation based on a combination of hydraulic control and electric control. When the two-position two-way electromagnetic reversing valve is in an off state, the hydraulic control one-way valve is open, and when the hydraulic control one-way valve is closed, the two-position two-way electromagnetic reversing valve is in an on state, which ensures that an output of a high pressure fluid and an output of a low pressure fluid are in different lines. The two-position two-way electromagnetic reversing valve and the two-position three-way electromagnetic reversing valve are controlled by a same control signal.
When the two-position two-way electromagnetic reversing valve is in a flow position, the two-position three-way electromagnetic reversing valve is in a convection position, that is, the right position, and further control a corresponding pressurizing cavity to be in a non-pressurizing state; and when the two-position two-way electromagnetic reversing valve is in a blocking position, the two-position three-way electromagnetic reversing valve is in an inclined flow position, that is, the left position, to control a corresponding pressurizing cavity to be in a pressurizing state.
100101 Further, the control part of the pressurizing fluid loop further includes one-way valves. A one-way valve one is disposed on an oil line connecting the pressurizing fluid inlet to the first-stage pressurizing cavities, a one-way valve two is disposed on an oil line connecting the pressurizing fluid inlet to the second-stage pressurizing cavities, a one-way valve three is disposed on an oil line connecting the pressurizing fluid inlet to the third-stage pressurizing cavities, a one-way valve four is disposed on an oil line connecting the first-stage pressurizing cavities and the first hydraulic control one-way valve to the oil inlet of the first two-position two-way electromagnetic reversing valve, a one-way valve five is disposed on an oil line connecting the second-stage pressurizing cavities and the second hydraulic control one-way valve to the oil inlet of the second two-position two-way electromagnetic reversing valve, and a one-way valve six is disposed on an oil line connecting the third-stage pressurizing cavities and the third hydraulic control one-way valve to the = CA 03072526 2020-02-10 oil inlet of the third two-position two-way electromagnetic reversing valve.
[0011] The one-way valves disposed in the front and at the back of the pressurizing cavity can prevent a work fluid from flowing back to the pressurizing cavities, thereby ensuring pressurizing efficiency and accuracy.
[0012] Further, an electromagnetic stroke limit switch is disposed in limit positions at two ends of the hydraulic oil cavities on two sides, and the electromagnetic stroke limit switch is in signal connection to the controller.
[0013] When moving to the limit positions at two ends of the hydraulic oil cavities, the transmission piston will touch a contact of the electromagnetic stroke limit switch, the electromagnetic stroke limit switch sends an electrical signal to the controller, the controller feeds back the signal to the three-position four-way electromagnetic reversing valve to electrify the three-position four-way electromagnetic reversing valve and switch a direction of the three-position four-way electromagnetic reversing valve, and an oil inlet line supplies the hydraulic oil to the hydraulic oil cavity on the other side, to complete a reciprocation. Then a next reciprocation is performed according to this procedure, so that the pressurizer is automatically steered without a manual intervention.
[0014] For easy installation and production, the first-stage piston rod, the second-stage piston rod and the third-stage piston rod use a same diameter.
[0015] Preferably, the third-stage piston rod and the third-stage pressurizing piston are in a plunger structure.
[0016] To further improve the sealing effect of the pressurizer, the pressurizer is guided and sealed by using a sealing element, a supporting ring and a guiding ring. A
position in which bidirectional sealing is needed is sealed by using a rectangular ring made of high attrition resistance polytetrafluorethylene composite materials and a bidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings, and a position in which unidirectional sealing is needed is sealed by using a step-shaped ring made of high attrition resistance polytetrafluorethylene composite materials and a unidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings.
= CA 03072526 2020-02-10 Advantageous Effect [0017] Compared with the prior art, in the present invention, a bidirectional reciprocation structure and a third-stage pressurizing structure are used, and also a dual-fluid loop is used, so that a driving medium and a pressurizing medium may use fluids of different types, and also the control parts may be used, so that the pressurizer can be automatically steered and pressurized, thereby saving pressurization time.
Automatic pressurizations of six different pressurization rates can be automatically achieved without replacing pressurization parts, so that a using range and a pressurizing environment of the pressurizer are enlarged, and the one-pressurizer multi-pressure and one-pressurizer multipurpose effects can be achieved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 is a schematic diagram of a structure principle according to the present invention.
[0019] In the drawing: 1. transmission piston; 2. electromagnetic stroke limit switch;
3. first-stage pressurizing piston; 4. second-stage piston rod; 5. second-stage pressurizing piston; 6-1. one-way valve one; 6-2. one-way valve two; 6-3. one-way valve three; 6-4. one-way valve four; 6-5. one-way valve five; 6-6. one-way valve six;
7-1. first hydraulic control one-way valve; 7-2. second hydraulic control one-way valve; 7-3. third one-way valve;
[0020] 8-1. first two-position two-way electromagnetic reversing valve; 8-2.
second two-position two-way electromagnetic reversing valve; 8-3: third two-position two-way electromagnetic reversing valve; 9-1: first two-position three-way electromagnetic reversing valve; 9-2: second two-position three-way electromagnetic reversing valve; 9-3: third two-position three-way electromagnetic reversing valve; 10.
three-position four-way electromagnetic reversing valve; 11. controller; 12:
first-stage piston rod; 13. third-stage piston rod; 14. third-stage pressurizing piston;
[0021] Cl. hydraulic oil cavity; C2. first-stage pressurizing cavity; C3.
second-stage pressurizing cavity; C4. third-stage pressurizing cavity;
[0022] Fl. pressurizing fluid inlet; P2. non-pressurizing-fluid outlet; P3.
hydraulic oil inlet; P4. hydraulic oil return port; 135. pressurizing fluid outlet;
[0023] a. shunting node; and b. collecting node.
DETAILED DESCRIPTION OF THE INVENTION
[0024] The present invention is described below in detail with reference to the accompanying drawings.
[0025] As shown in FIG. 1, a multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate includes a multi-stage pressurizing structure, a hydraulic oil loop and a control part thereof, and a pressurizing fluid loop and a control part thereof. The multi-stage pressurizing structure includes a pressurizer housing, high pressure cylinder heads connected to two ends of the pressurizer housing, a piston disposed inside the pressurizer housing, a piston rod installed on two ends of the piston and a junction valve body. A fluid in the pressurizing fluid loop and a fluid in the hydraulic oil loop use a same medium or different media. The piston in the housing includes a transmission piston 1, two first-stage pressurizing pistons 3, two second-stage pressurizing pistons 5, and two third-stage pressurizing pistons 14. The transmission piston 1 is disposed in the middle of the pressurizer housing, the first-stage pressurizing pistons 3 are symmetrically connected to two sides of the transmission piston 1 through a first-stage piston rod 12, the second-stage pressurizing pistons 5 are symmetrically connected to two sides of the first-stage pressurizing pistons 3 through a second-stage piston rod 4, and the third-stage pressurizing pistons 14 are symmetrically connected to two sides of the second-stage pressurizing pistons through a third-stage piston rod 13. Areas of the transmission piston 1, the first-stage pressurizing pistons 3, the second-stage pressurizing pistons 5 and the third-stage pressurizing pistons decrease sequentially in proportion. The transmission piston 1 and the two first-stage pressurizing pistons 3 respectively form two hydraulic oil cavities Cl on the left and the right, the two first-stage pressurizing pistons 3 and the two second-stage pressurizing pistons 5 respectively form two first-stage pressurizing cavities C2 on the left and the right, the two second-stage pressurizing pistons 5 and the two third-stage pressurizing pistons 14 respectively form two second-stage pressurizing cavities C3 on the left and the right, and two third-stage pressurizing cavities C4 are respectively formed on the left and the right between the two third-stage pressurizing pistons 14 and the high pressure cylinder heads on two sides.
= CA 03072526 2020-02-10 [0026] The hydraulic oil loop includes a hydraulic oil inlet P3 and a hydraulic oil return port P4, and the control part of the hydraulic oil loop includes a three-position four-way electromagnetic reversing valve 10. Hydraulic oil enters the hydraulic oil cavity CI on one side from the oil inlet P3 through the three-position four-way electromagnetic reversing valve 10, and hydraulic oil in the hydraulic oil cavity Cl on the other side returns to the hydraulic oil return port P4 through the three-position four-way electromagnetic reversing valve 10.
[0027] The pressurizing fluid loop includes a pressurizing fluid inlet PI, a non-pressurizing-fluid outlet P2 and a pressurizing fluid outlet P5, and the control part of the pressurizing fluid loop includes hydraulic control one-way valves, two-position two-way electromagnetic reversing valves and two-position three-way electromagnetic reversing valves. A low pressure fluid entering from the pressurizing fluid inlet P1 respectively enters the first-stage pressurizing cavities C2, the second-stage pressurizing cavities C3 and the third-stage pressurizing cavities C4, right positions of three two-position three-way electromagnetic reversing valves are shunted to the hydraulic oil cavity Cl on one side, a left position of a first two-position three-way electromagnetic reversing valve 9-1 is connected to a control port of a first hydraulic control one-way valve 7-1, a left position of a second two-position three-way electromagnetic reversing valve 9-2 is connected to a control port of a second hydraulic control one-way valve 7-2, and a left position of a third two-position three-way electromagnetic reversing valve 9-3 is connected to a control port of a third hydraulic control one-way valve 7-3. A fluid flowing out through the first-stage pressurizing cavities C2 is respectively connected to the first hydraulic control one-way valve 7-1 and an oil inlet of a first two-position two-way electromagnetic reversing valve 8-1, a fluid flowing out through the second-stage pressurizing cavities C3 is respectively connected to the second hydraulic control one-way valve 7-2 and an oil inlet of a second two-position two-way electromagnetic reversing valve 8-2, a fluid flowing out through the third-stage pressurizing cavities C4 is respectively connected to the third hydraulic control one-way valve 7-3 and an oil inlet of a third two-position two-way electromagnetic reversing valve 8-3, oil outlets of the three hydraulic control one-way valves are shunted to the pressurizing fluid outlet 135, and oil outlets of the three two-position two-way electromagnetic reversing valves are shunted to the non-pressurizing-fluid outlet P2.
= CA 03072526 2020-02-10 [0028] The two-position two-way electromagnetic reversing valves, the three-position four-way electromagnetic reversing valve 10 and the two-position three-way electromagnetic reversing valves are controlled by signals of a controller 11.
[0029] In the pressurizing structure part, a bidirectional reciprocation structure and a third-stage pressurizing structure are used, and the first-stage pressurizing cavities C2 on two sides are pushed to perform a left and right reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet P3 and returns to the hydraulic oil return port P4, where the hydraulic force is passed from the transmission piston 1 pushed by the hydraulic oil cavities Cl on two sides to the first-stage piston rod 12.
The second-stage pressurizing cavities C3 on two sides are pushed to perform a reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet P3 and returns to the hydraulic oil return port P4, where the hydraulic force is passed from the transmission piston I pushed by the hydraulic oil cavities Cl on two sides to the first-stage piston rod 12, the second-stage pressurizing piston 5 and the second-stage piston rod 4. The third-stage pressurizing cavities C4 on two sides are pushed to perform a reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet P3 and returns to the hydraulic oil return port P4, where the hydraulic force is passed from the transmission piston 1 pushed by the hydraulic oil cavities Cl on two sides to the first-stage piston rod 12, the second-stage pressurizing piston 5, the third-stage piston rod 13 and the third-stage pressurizing piston 14. Pressurization rate combinations of different pressurizers can be achieved according to different volume changing combinations of different pressurizing cavities under combined action of the controller 11 and divided flow in each line.
Hydraulic oil reaches the three-position four-way electromagnetic reversing valve 10 from the hydraulic oil inlet P3. When a pressurization is performed to the right, the controller 11 controls the three-position four-way electromagnetic reversing valve 10 to be in a left position, and when a pressurization is performed to the left, the controller 11 controls the three-position four-way electromagnetic reversing valve 10 to be in a right position. A cavity that does not need to be pressurized needs to be controlled by the controller 11 to be in the right position with a two-position three-way electromagnetic reversing valve connected to the cavity, to participate in a loop fluid supply pushed by hydraulic pressure in a reciprocating manner. A
cavity that needs to be pressurized needs to be controlled by the controller to be in the left = CA 03072526 2020-02-10 position with a two-position three-way electromagnetic reversing valve connected to the cavity, to control a fluid supply to an oil inlet of a hydraulic control one-way valve connected to the cavity, and further control opening of a fluid line in which the hydraulic control one-way valve is located. The two-position two-way electromagnetic reversing valve and the hydraulic control one-way valve are controlled in complementation based on a combination of hydraulic control and electric control. When the two-position two-way electromagnetic reversing valve is in an off state, the hydraulic control one-way valve is open, and when the hydraulic control one-way valve is closed, the three-position four-way electromagnetic reversing valve is in an on state, which ensures that an output PS of a high pressure fluid and an output P2 of a low pressure fluid are in different lines. The two-position two-way electromagnetic reversing valve and the two-position three-way electromagnetic reversing valve are controlled by a same control signal. When the two-position two-way electromagnetic reversing valve is in a flow position, the two-position three-way electromagnetic reversing valve is in a convection position, that is, the right position, and further control a corresponding pressurizing cavity to be in a non-pressurizing state; and when the two-position two-way electromagnetic reversing valve is in a blocking position, the two-position three-way electromagnetic reversing valve is in an inclined flow position, that is, the left position, to control a corresponding pressurizing cavity to be in a pressurizing state.
[0030] Further, the control part of the pressurizing fluid loop further includes one-way valves. A one-way valve one 6-1 is disposed on an oil line connecting the pressurizing fluid inlet PI to the first-stage pressurizing cavities C2, a one-way valve two 6-2 is disposed on an oil line connecting the pressurizing fluid inlet PI to the second-stage pressurizing cavities C3, a one-way valve three 6-3 is disposed on an oil line connecting the pressurizing fluid inlet PI to the third-stage pressurizing cavities C4, a one-way valve four 6-4 is disposed on an oil line connecting the first-stage pressurizing cavities C2 and the first hydraulic control one-way valve 7-1 to the oil inlet of the first two-position two-way electromagnetic reversing valve 8-1, a one-way valve five 6-5 is disposed on an oil line connecting the second-stage pressurizing cavities C3 and the second hydraulic control one-way valve 7-2 to the oil inlet of the second two-position two-way electromagnetic reversing valve 8-2, and a one-way valve six 6-6 is disposed on an oil line connecting the third-stage pressurizing cavities C4 and the third hydraulic control one-way valve 7-3 to the oil inlet of the third two-position two-way electromagnetic reversing valve 8-3.
[0031] The one-way valves disposed in the front and at the back of the pressurizing cavity can prevent a work fluid from flowing back to the pressurizing cavities C2, C3 and C4, thereby ensuring pressurizing efficiency and accuracy.
[0032] Further, an electromagnetic stroke limit switch 2 is disposed in limit positions at two ends of the hydraulic oil cavities Cl on two sides, and the electromagnetic stroke limit switch 2 is in signal connection to the controller 11.
[0033] When moving to the limit positions at two ends of the hydraulic oil cavities, the transmission piston I will touch a contact of the electromagnetic stroke limit switch 2, the electromagnetic stroke limit switch 2 sends an electrical signal to the controller 11, the controller 11 feeds back the signal to the three-position four-way electromagnetic reversing valve 10 to electrify the three-position four-way electromagnetic reversing valve 10 and switch a direction of the three-position four-way electromagnetic reversing valve 10, and an oil inlet line supplies the hydraulic oil to hydraulic oil cavity on the other side, to complete a reciprocation.
Then a next reciprocation is performed according to this procedure, so that the pressurizer is automatically steered without a manual intervention.
[0034] For easy installation and production, the first-stage piston rod 12, the second-stage piston rod 4 and the third-stage piston rod 13 use a same diameter.
[0035] Preferably, the third-stage piston rod 13 and the third-stage pressurizing piston 14 are in a plunger structure.
[0036] To further improve the sealing effect of the pressurizer, the pressurizer is guided and sealed by using a sealing element, a supporting ring and a guiding ring. A
position in which bidirectional sealing is needed is sealed by using a rectangular ring made of high attrition resistance polytetrafluorethylene composite materials and a bidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings, and a position in which unidirectional sealing is needed is sealed by using a step-shaped ring made of high attrition resistance polytetrafluorethylene composite materials and a unidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings.
[0037] Assuming that a diameter of the transmission piston: a diameter of the first-stage pressurizing piston: a diameter of the second-stage pressurizing piston: a diameter of the third-stage pressurizing piston=8: 4: 2: 1, there are six combinations of pressurization multiples, that is, 8, 4, 2, 8/3, 8/5, and 8/6.
[0038] As shown in FIG. 1, a pressurization procedure of the pressurizer is briefly described by taking an example that oil line pressurization of a left end of the pressurizer is 8/5.
[0039] Before loaded, the transmission piston is in a middle position, hydraulic oil output from a hydraulic oil station reaches the three-position four-way electromagnetic reversing valve 10 through P3. In this case, the controller 11 that has completed programming sends a signal to the three-position four-way electromagnetic reversing valve 10, and an electromagnetic force generated by an electromagnetic coil pulls a slipping valve plug from the middle position to the left, so that the three-position four-way electromagnetic reversing valve 10 is switched from the middle position to the left position. The controller controls the three-position four-way electromagnetic reversing valve 10 to be in the left position through the signal, and controls the second two-position three-way electromagnetic reversing valve 9-2 to be in the convection position, that is, the right position in the drawing, and meanwhile the second two-position two-way electromagnetic reversing valve is in a flow position, that is, the upper position in the drawing. The first two-position two-way electromagnetic reversing valve and the third two-position two-way electromagnetic reversing valve are both in the inclined flow position, that is, the left position in the drawing, and meanwhile the first two-position two-way electromagnetic reversing valve 8-1 and the third two-position two-way electromagnetic reversing valve 8-3 are in a blocking position, that is, the lower position in the drawing.
[0040] The hydraulic oil entering from the hydraulic oil inlet P3 reaches a shunting node a after passing a left position of the three-position four-way electromagnetic reversing valve 10, where a part of the hydraulic oil enters the hydraulic oil cavity Cl on the left side after passing a right position of the second two-position three-way electromagnetic reversing valve 9-2 to push the transmission piston 1 to move to the right, and the other part of the hydraulic oil respectively flows into control oil inlets of the first hydraulic control one-way valve 7-1 and the third hydraulic control one-way valve 7-3 after passing left positions of the first two-position three-way electromagnetic reversing valve 9-1 and the third two-position three-way electromagnetic reversing valve 9-3, to control the two hydraulic control one-way valves to open. The to-be-pressurized fluid enters from the pressurizing fluid inlet P 1 , and respectively passes the one-way valve one, the one-way valve two and the one-way valve three to flow into the first-stage pressurizing cavities C2, the second-stage pressurizing cavities C3 and the third-stage pressurizing cavities C4 for an imbibing procedure. When the transmission piston 1 moves to a limit position on the right, the controller controls the three-position four-way electromagnetic reversing valve 10 to switch to the right position, and the hydraulic oil pushes the transmission piston 1 to move to the left to start pressurizing. A fluid flowing out from the first-stage pressurizing cavities C2 after pressurization sequentially passes the one-way valve four and the hydraulic control one-way valve one, and a fluid flowing out from the third-stage pressurizing cavities C4 after pressurization sequentially passes the one-way valve six and the hydraulic control one-way valve three.
The two pressurizing fluids reach the pressurizing fluid outlet P5 after reaching a collecting node b, which are ready to be used by a device. A fluid flowing out from the second-stage pressurizing cavities C3, after sequentially passing the one-way valve five and the second two-position two-way electromagnetic reversing valve 8-2, reaches the non-pressurizing-fluid outlet P2 for waste liquid recovery, which is used again or not depending on a situation. Similarly, other needed pressurization multiples may be achieved by analogizing the foregoing procedure.
100411 During unloading, the controller 11 sends a signal to control the three-position four-way electromagnetic reversing valve 10, the electromagnetic force generated by the electromagnetic coil releases the slipping valve plug from the two side positions to the middle position, so that the three-position four-way electromagnetic reversing valve 10 is switched from the two side positions to the middle position, and all other electromagnetic reversing valves are set in positions at the same time. In this case, the pressurizer stops working.
When the two-position two-way electromagnetic reversing valve is in a flow position, the two-position three-way electromagnetic reversing valve is in a convection position, that is, the right position, and further control a corresponding pressurizing cavity to be in a non-pressurizing state; and when the two-position two-way electromagnetic reversing valve is in a blocking position, the two-position three-way electromagnetic reversing valve is in an inclined flow position, that is, the left position, to control a corresponding pressurizing cavity to be in a pressurizing state.
100101 Further, the control part of the pressurizing fluid loop further includes one-way valves. A one-way valve one is disposed on an oil line connecting the pressurizing fluid inlet to the first-stage pressurizing cavities, a one-way valve two is disposed on an oil line connecting the pressurizing fluid inlet to the second-stage pressurizing cavities, a one-way valve three is disposed on an oil line connecting the pressurizing fluid inlet to the third-stage pressurizing cavities, a one-way valve four is disposed on an oil line connecting the first-stage pressurizing cavities and the first hydraulic control one-way valve to the oil inlet of the first two-position two-way electromagnetic reversing valve, a one-way valve five is disposed on an oil line connecting the second-stage pressurizing cavities and the second hydraulic control one-way valve to the oil inlet of the second two-position two-way electromagnetic reversing valve, and a one-way valve six is disposed on an oil line connecting the third-stage pressurizing cavities and the third hydraulic control one-way valve to the = CA 03072526 2020-02-10 oil inlet of the third two-position two-way electromagnetic reversing valve.
[0011] The one-way valves disposed in the front and at the back of the pressurizing cavity can prevent a work fluid from flowing back to the pressurizing cavities, thereby ensuring pressurizing efficiency and accuracy.
[0012] Further, an electromagnetic stroke limit switch is disposed in limit positions at two ends of the hydraulic oil cavities on two sides, and the electromagnetic stroke limit switch is in signal connection to the controller.
[0013] When moving to the limit positions at two ends of the hydraulic oil cavities, the transmission piston will touch a contact of the electromagnetic stroke limit switch, the electromagnetic stroke limit switch sends an electrical signal to the controller, the controller feeds back the signal to the three-position four-way electromagnetic reversing valve to electrify the three-position four-way electromagnetic reversing valve and switch a direction of the three-position four-way electromagnetic reversing valve, and an oil inlet line supplies the hydraulic oil to the hydraulic oil cavity on the other side, to complete a reciprocation. Then a next reciprocation is performed according to this procedure, so that the pressurizer is automatically steered without a manual intervention.
[0014] For easy installation and production, the first-stage piston rod, the second-stage piston rod and the third-stage piston rod use a same diameter.
[0015] Preferably, the third-stage piston rod and the third-stage pressurizing piston are in a plunger structure.
[0016] To further improve the sealing effect of the pressurizer, the pressurizer is guided and sealed by using a sealing element, a supporting ring and a guiding ring. A
position in which bidirectional sealing is needed is sealed by using a rectangular ring made of high attrition resistance polytetrafluorethylene composite materials and a bidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings, and a position in which unidirectional sealing is needed is sealed by using a step-shaped ring made of high attrition resistance polytetrafluorethylene composite materials and a unidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings.
= CA 03072526 2020-02-10 Advantageous Effect [0017] Compared with the prior art, in the present invention, a bidirectional reciprocation structure and a third-stage pressurizing structure are used, and also a dual-fluid loop is used, so that a driving medium and a pressurizing medium may use fluids of different types, and also the control parts may be used, so that the pressurizer can be automatically steered and pressurized, thereby saving pressurization time.
Automatic pressurizations of six different pressurization rates can be automatically achieved without replacing pressurization parts, so that a using range and a pressurizing environment of the pressurizer are enlarged, and the one-pressurizer multi-pressure and one-pressurizer multipurpose effects can be achieved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 is a schematic diagram of a structure principle according to the present invention.
[0019] In the drawing: 1. transmission piston; 2. electromagnetic stroke limit switch;
3. first-stage pressurizing piston; 4. second-stage piston rod; 5. second-stage pressurizing piston; 6-1. one-way valve one; 6-2. one-way valve two; 6-3. one-way valve three; 6-4. one-way valve four; 6-5. one-way valve five; 6-6. one-way valve six;
7-1. first hydraulic control one-way valve; 7-2. second hydraulic control one-way valve; 7-3. third one-way valve;
[0020] 8-1. first two-position two-way electromagnetic reversing valve; 8-2.
second two-position two-way electromagnetic reversing valve; 8-3: third two-position two-way electromagnetic reversing valve; 9-1: first two-position three-way electromagnetic reversing valve; 9-2: second two-position three-way electromagnetic reversing valve; 9-3: third two-position three-way electromagnetic reversing valve; 10.
three-position four-way electromagnetic reversing valve; 11. controller; 12:
first-stage piston rod; 13. third-stage piston rod; 14. third-stage pressurizing piston;
[0021] Cl. hydraulic oil cavity; C2. first-stage pressurizing cavity; C3.
second-stage pressurizing cavity; C4. third-stage pressurizing cavity;
[0022] Fl. pressurizing fluid inlet; P2. non-pressurizing-fluid outlet; P3.
hydraulic oil inlet; P4. hydraulic oil return port; 135. pressurizing fluid outlet;
[0023] a. shunting node; and b. collecting node.
DETAILED DESCRIPTION OF THE INVENTION
[0024] The present invention is described below in detail with reference to the accompanying drawings.
[0025] As shown in FIG. 1, a multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate includes a multi-stage pressurizing structure, a hydraulic oil loop and a control part thereof, and a pressurizing fluid loop and a control part thereof. The multi-stage pressurizing structure includes a pressurizer housing, high pressure cylinder heads connected to two ends of the pressurizer housing, a piston disposed inside the pressurizer housing, a piston rod installed on two ends of the piston and a junction valve body. A fluid in the pressurizing fluid loop and a fluid in the hydraulic oil loop use a same medium or different media. The piston in the housing includes a transmission piston 1, two first-stage pressurizing pistons 3, two second-stage pressurizing pistons 5, and two third-stage pressurizing pistons 14. The transmission piston 1 is disposed in the middle of the pressurizer housing, the first-stage pressurizing pistons 3 are symmetrically connected to two sides of the transmission piston 1 through a first-stage piston rod 12, the second-stage pressurizing pistons 5 are symmetrically connected to two sides of the first-stage pressurizing pistons 3 through a second-stage piston rod 4, and the third-stage pressurizing pistons 14 are symmetrically connected to two sides of the second-stage pressurizing pistons through a third-stage piston rod 13. Areas of the transmission piston 1, the first-stage pressurizing pistons 3, the second-stage pressurizing pistons 5 and the third-stage pressurizing pistons decrease sequentially in proportion. The transmission piston 1 and the two first-stage pressurizing pistons 3 respectively form two hydraulic oil cavities Cl on the left and the right, the two first-stage pressurizing pistons 3 and the two second-stage pressurizing pistons 5 respectively form two first-stage pressurizing cavities C2 on the left and the right, the two second-stage pressurizing pistons 5 and the two third-stage pressurizing pistons 14 respectively form two second-stage pressurizing cavities C3 on the left and the right, and two third-stage pressurizing cavities C4 are respectively formed on the left and the right between the two third-stage pressurizing pistons 14 and the high pressure cylinder heads on two sides.
= CA 03072526 2020-02-10 [0026] The hydraulic oil loop includes a hydraulic oil inlet P3 and a hydraulic oil return port P4, and the control part of the hydraulic oil loop includes a three-position four-way electromagnetic reversing valve 10. Hydraulic oil enters the hydraulic oil cavity CI on one side from the oil inlet P3 through the three-position four-way electromagnetic reversing valve 10, and hydraulic oil in the hydraulic oil cavity Cl on the other side returns to the hydraulic oil return port P4 through the three-position four-way electromagnetic reversing valve 10.
[0027] The pressurizing fluid loop includes a pressurizing fluid inlet PI, a non-pressurizing-fluid outlet P2 and a pressurizing fluid outlet P5, and the control part of the pressurizing fluid loop includes hydraulic control one-way valves, two-position two-way electromagnetic reversing valves and two-position three-way electromagnetic reversing valves. A low pressure fluid entering from the pressurizing fluid inlet P1 respectively enters the first-stage pressurizing cavities C2, the second-stage pressurizing cavities C3 and the third-stage pressurizing cavities C4, right positions of three two-position three-way electromagnetic reversing valves are shunted to the hydraulic oil cavity Cl on one side, a left position of a first two-position three-way electromagnetic reversing valve 9-1 is connected to a control port of a first hydraulic control one-way valve 7-1, a left position of a second two-position three-way electromagnetic reversing valve 9-2 is connected to a control port of a second hydraulic control one-way valve 7-2, and a left position of a third two-position three-way electromagnetic reversing valve 9-3 is connected to a control port of a third hydraulic control one-way valve 7-3. A fluid flowing out through the first-stage pressurizing cavities C2 is respectively connected to the first hydraulic control one-way valve 7-1 and an oil inlet of a first two-position two-way electromagnetic reversing valve 8-1, a fluid flowing out through the second-stage pressurizing cavities C3 is respectively connected to the second hydraulic control one-way valve 7-2 and an oil inlet of a second two-position two-way electromagnetic reversing valve 8-2, a fluid flowing out through the third-stage pressurizing cavities C4 is respectively connected to the third hydraulic control one-way valve 7-3 and an oil inlet of a third two-position two-way electromagnetic reversing valve 8-3, oil outlets of the three hydraulic control one-way valves are shunted to the pressurizing fluid outlet 135, and oil outlets of the three two-position two-way electromagnetic reversing valves are shunted to the non-pressurizing-fluid outlet P2.
= CA 03072526 2020-02-10 [0028] The two-position two-way electromagnetic reversing valves, the three-position four-way electromagnetic reversing valve 10 and the two-position three-way electromagnetic reversing valves are controlled by signals of a controller 11.
[0029] In the pressurizing structure part, a bidirectional reciprocation structure and a third-stage pressurizing structure are used, and the first-stage pressurizing cavities C2 on two sides are pushed to perform a left and right reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet P3 and returns to the hydraulic oil return port P4, where the hydraulic force is passed from the transmission piston 1 pushed by the hydraulic oil cavities Cl on two sides to the first-stage piston rod 12.
The second-stage pressurizing cavities C3 on two sides are pushed to perform a reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet P3 and returns to the hydraulic oil return port P4, where the hydraulic force is passed from the transmission piston I pushed by the hydraulic oil cavities Cl on two sides to the first-stage piston rod 12, the second-stage pressurizing piston 5 and the second-stage piston rod 4. The third-stage pressurizing cavities C4 on two sides are pushed to perform a reciprocation by a hydraulic force generated by that oil enters from the hydraulic oil inlet P3 and returns to the hydraulic oil return port P4, where the hydraulic force is passed from the transmission piston 1 pushed by the hydraulic oil cavities Cl on two sides to the first-stage piston rod 12, the second-stage pressurizing piston 5, the third-stage piston rod 13 and the third-stage pressurizing piston 14. Pressurization rate combinations of different pressurizers can be achieved according to different volume changing combinations of different pressurizing cavities under combined action of the controller 11 and divided flow in each line.
Hydraulic oil reaches the three-position four-way electromagnetic reversing valve 10 from the hydraulic oil inlet P3. When a pressurization is performed to the right, the controller 11 controls the three-position four-way electromagnetic reversing valve 10 to be in a left position, and when a pressurization is performed to the left, the controller 11 controls the three-position four-way electromagnetic reversing valve 10 to be in a right position. A cavity that does not need to be pressurized needs to be controlled by the controller 11 to be in the right position with a two-position three-way electromagnetic reversing valve connected to the cavity, to participate in a loop fluid supply pushed by hydraulic pressure in a reciprocating manner. A
cavity that needs to be pressurized needs to be controlled by the controller to be in the left = CA 03072526 2020-02-10 position with a two-position three-way electromagnetic reversing valve connected to the cavity, to control a fluid supply to an oil inlet of a hydraulic control one-way valve connected to the cavity, and further control opening of a fluid line in which the hydraulic control one-way valve is located. The two-position two-way electromagnetic reversing valve and the hydraulic control one-way valve are controlled in complementation based on a combination of hydraulic control and electric control. When the two-position two-way electromagnetic reversing valve is in an off state, the hydraulic control one-way valve is open, and when the hydraulic control one-way valve is closed, the three-position four-way electromagnetic reversing valve is in an on state, which ensures that an output PS of a high pressure fluid and an output P2 of a low pressure fluid are in different lines. The two-position two-way electromagnetic reversing valve and the two-position three-way electromagnetic reversing valve are controlled by a same control signal. When the two-position two-way electromagnetic reversing valve is in a flow position, the two-position three-way electromagnetic reversing valve is in a convection position, that is, the right position, and further control a corresponding pressurizing cavity to be in a non-pressurizing state; and when the two-position two-way electromagnetic reversing valve is in a blocking position, the two-position three-way electromagnetic reversing valve is in an inclined flow position, that is, the left position, to control a corresponding pressurizing cavity to be in a pressurizing state.
[0030] Further, the control part of the pressurizing fluid loop further includes one-way valves. A one-way valve one 6-1 is disposed on an oil line connecting the pressurizing fluid inlet PI to the first-stage pressurizing cavities C2, a one-way valve two 6-2 is disposed on an oil line connecting the pressurizing fluid inlet PI to the second-stage pressurizing cavities C3, a one-way valve three 6-3 is disposed on an oil line connecting the pressurizing fluid inlet PI to the third-stage pressurizing cavities C4, a one-way valve four 6-4 is disposed on an oil line connecting the first-stage pressurizing cavities C2 and the first hydraulic control one-way valve 7-1 to the oil inlet of the first two-position two-way electromagnetic reversing valve 8-1, a one-way valve five 6-5 is disposed on an oil line connecting the second-stage pressurizing cavities C3 and the second hydraulic control one-way valve 7-2 to the oil inlet of the second two-position two-way electromagnetic reversing valve 8-2, and a one-way valve six 6-6 is disposed on an oil line connecting the third-stage pressurizing cavities C4 and the third hydraulic control one-way valve 7-3 to the oil inlet of the third two-position two-way electromagnetic reversing valve 8-3.
[0031] The one-way valves disposed in the front and at the back of the pressurizing cavity can prevent a work fluid from flowing back to the pressurizing cavities C2, C3 and C4, thereby ensuring pressurizing efficiency and accuracy.
[0032] Further, an electromagnetic stroke limit switch 2 is disposed in limit positions at two ends of the hydraulic oil cavities Cl on two sides, and the electromagnetic stroke limit switch 2 is in signal connection to the controller 11.
[0033] When moving to the limit positions at two ends of the hydraulic oil cavities, the transmission piston I will touch a contact of the electromagnetic stroke limit switch 2, the electromagnetic stroke limit switch 2 sends an electrical signal to the controller 11, the controller 11 feeds back the signal to the three-position four-way electromagnetic reversing valve 10 to electrify the three-position four-way electromagnetic reversing valve 10 and switch a direction of the three-position four-way electromagnetic reversing valve 10, and an oil inlet line supplies the hydraulic oil to hydraulic oil cavity on the other side, to complete a reciprocation.
Then a next reciprocation is performed according to this procedure, so that the pressurizer is automatically steered without a manual intervention.
[0034] For easy installation and production, the first-stage piston rod 12, the second-stage piston rod 4 and the third-stage piston rod 13 use a same diameter.
[0035] Preferably, the third-stage piston rod 13 and the third-stage pressurizing piston 14 are in a plunger structure.
[0036] To further improve the sealing effect of the pressurizer, the pressurizer is guided and sealed by using a sealing element, a supporting ring and a guiding ring. A
position in which bidirectional sealing is needed is sealed by using a rectangular ring made of high attrition resistance polytetrafluorethylene composite materials and a bidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings, and a position in which unidirectional sealing is needed is sealed by using a step-shaped ring made of high attrition resistance polytetrafluorethylene composite materials and a unidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings.
[0037] Assuming that a diameter of the transmission piston: a diameter of the first-stage pressurizing piston: a diameter of the second-stage pressurizing piston: a diameter of the third-stage pressurizing piston=8: 4: 2: 1, there are six combinations of pressurization multiples, that is, 8, 4, 2, 8/3, 8/5, and 8/6.
[0038] As shown in FIG. 1, a pressurization procedure of the pressurizer is briefly described by taking an example that oil line pressurization of a left end of the pressurizer is 8/5.
[0039] Before loaded, the transmission piston is in a middle position, hydraulic oil output from a hydraulic oil station reaches the three-position four-way electromagnetic reversing valve 10 through P3. In this case, the controller 11 that has completed programming sends a signal to the three-position four-way electromagnetic reversing valve 10, and an electromagnetic force generated by an electromagnetic coil pulls a slipping valve plug from the middle position to the left, so that the three-position four-way electromagnetic reversing valve 10 is switched from the middle position to the left position. The controller controls the three-position four-way electromagnetic reversing valve 10 to be in the left position through the signal, and controls the second two-position three-way electromagnetic reversing valve 9-2 to be in the convection position, that is, the right position in the drawing, and meanwhile the second two-position two-way electromagnetic reversing valve is in a flow position, that is, the upper position in the drawing. The first two-position two-way electromagnetic reversing valve and the third two-position two-way electromagnetic reversing valve are both in the inclined flow position, that is, the left position in the drawing, and meanwhile the first two-position two-way electromagnetic reversing valve 8-1 and the third two-position two-way electromagnetic reversing valve 8-3 are in a blocking position, that is, the lower position in the drawing.
[0040] The hydraulic oil entering from the hydraulic oil inlet P3 reaches a shunting node a after passing a left position of the three-position four-way electromagnetic reversing valve 10, where a part of the hydraulic oil enters the hydraulic oil cavity Cl on the left side after passing a right position of the second two-position three-way electromagnetic reversing valve 9-2 to push the transmission piston 1 to move to the right, and the other part of the hydraulic oil respectively flows into control oil inlets of the first hydraulic control one-way valve 7-1 and the third hydraulic control one-way valve 7-3 after passing left positions of the first two-position three-way electromagnetic reversing valve 9-1 and the third two-position three-way electromagnetic reversing valve 9-3, to control the two hydraulic control one-way valves to open. The to-be-pressurized fluid enters from the pressurizing fluid inlet P 1 , and respectively passes the one-way valve one, the one-way valve two and the one-way valve three to flow into the first-stage pressurizing cavities C2, the second-stage pressurizing cavities C3 and the third-stage pressurizing cavities C4 for an imbibing procedure. When the transmission piston 1 moves to a limit position on the right, the controller controls the three-position four-way electromagnetic reversing valve 10 to switch to the right position, and the hydraulic oil pushes the transmission piston 1 to move to the left to start pressurizing. A fluid flowing out from the first-stage pressurizing cavities C2 after pressurization sequentially passes the one-way valve four and the hydraulic control one-way valve one, and a fluid flowing out from the third-stage pressurizing cavities C4 after pressurization sequentially passes the one-way valve six and the hydraulic control one-way valve three.
The two pressurizing fluids reach the pressurizing fluid outlet P5 after reaching a collecting node b, which are ready to be used by a device. A fluid flowing out from the second-stage pressurizing cavities C3, after sequentially passing the one-way valve five and the second two-position two-way electromagnetic reversing valve 8-2, reaches the non-pressurizing-fluid outlet P2 for waste liquid recovery, which is used again or not depending on a situation. Similarly, other needed pressurization multiples may be achieved by analogizing the foregoing procedure.
100411 During unloading, the controller 11 sends a signal to control the three-position four-way electromagnetic reversing valve 10, the electromagnetic force generated by the electromagnetic coil releases the slipping valve plug from the two side positions to the middle position, so that the three-position four-way electromagnetic reversing valve 10 is switched from the two side positions to the middle position, and all other electromagnetic reversing valves are set in positions at the same time. In this case, the pressurizer stops working.
Claims (6)
1. A multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate, comprising a multi-stage pressurizing structure, a hydraulic oil loop and a control part thereof, and a pressurizing fluid loop and a control part thereof, wherein the multi-stage pressurizing structure comprises a pressurizer housing, high pressure cylinder heads connected to two ends of the pressurizer housing, a piston disposed inside the pressurizer housing, a piston rod installed on two ends of the piston and a junction valve body, wherein a fluid in the pressurizing fluid loop and a fluid in the hydraulic oil loop use a same medium or different media; the piston in the housing comprises a transmission piston (1), two first-stage pressurizing pistons (3), two second-stage pressurizing pistons (5), and two third-stage pressurizing pistons (14), wherein the transmission piston (1) is disposed in the middle of the pressurizer housing, the first-stage pressurizing pistons (3) are symmetrically connected to two sides of the transmission piston (1) through a first-stage piston rod (12), the second-stage pressurizing pistons (5) are symmetrically connected to two sides of the first-stage pressurizing pistons (3) through a second-stage piston rod (4), and the third-stage pressurizing pistons (14) are symmetrically connected to two sides of the second-stage pressurizing pistons (5) through a third-stage piston rod (13); areas of the transmission piston (1), the first-stage pressurizing pistons (3), the second-stage pressurizing pistons (5) and the third-stage pressurizing pistons decrease sequentially in proportion; the transmission piston (1) and the two first-stage pressurizing pistons (3) respectively form a hydraulic cavity (C1) on the left and a hydraulic cavity on the right, the two first-stage pressurizing pistons (3) and the two second-stage pressurizing pistons (5) respectively form a first-stage pressurizing cavity (C2) on the left and a first-stage pressurizing cavity (C2) on the right, the two second-stage pressurizing pistons (5) and the two third-stage pressurizing pistons (14) respectively form a second-stage pressurizing cavity (C3) on the left and a second-stage pressurizing cavity (C3) on the right, and a third-stage pressurizing cavity (C4) is respectively formed on the left and on the right between the two third-stage pressurizing pistons (14) and the high pressure cylinder heads on two sides;
Date Recue/Date Received 2022-03-01 the hydraulic oil loop comprises a hydraulic oil inlet (P3) and a hydraulic oil return port (P4), and the control part of the hydraulic oil loop comprises a three-position four-way electromagnetic reversing valve (10), wherein hydraulic oil enters the hydraulic cavity (C1) on the left from the oil inlet (P3) through the three-position four-way electromagnetic reversing valve (10), and hydraulic oil in the hydraulic cavity (C1) on the right returns to the hydraulic oil return port (P4) through the three-position four-way electromagnetic reversing valve (10);
the pressurizing fluid loop comprises a pressurizing fluid inlet (P1), a non-pressurizing-fluid outlet (P2) and a pressurizing fluid outlet (P5), and the control part of the pressurizing fluid loop comprises hydraulic control one-way valves, two-position two-way electromagnetic reversing valves and two-position three-way electromagnetic reversing valves, wherein a low pressure fluid entering from the pressurizing fluid inlet (P1) respectively enters the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right, the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the right and the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right, right positions of three two-position three-way electromagnetic reversing valves are shunted to the hydraulic cavity (C1) on the left, a left position of a first two-position three-way electromagnetic reversing valve (9-1) is connected to a control port of a first hydraulic control one-way valve (7-1), a left position of a second two-position three-way electromagnetic reversing valve (9-2) is connected to a control port of a second hydraulic control one-way valve (7-2), and a left position of a third two-position three-way electromagnetic reversing valve (9-3) is connected to a control port of a third hydraulic control one-way valve (7-3); the fluid in the pressurizing fluid loop flowing out through the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right is respectively connected to the first hydraulic control one-way valve (7-1) and an oil inlet of a first two-position two-way electromagnetic reversing valve (8-1), the fluid in the pressurizing fluid loop flowing out through the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the Date Recue/Date Received 2022-03-01 right is respectively connected to the second hydraulic control one-way valve (7-2) and an oil inlet of a second two-position two-way electromagnetic reversing valve (8-2), the fluid in the pressurizing fluid loop flowing out through the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right is respectively connected to the third hydraulic control one-way valve (7-3) and an oil inlet of a third two-position two-way electromagnetic reversing valve (8-3), oil outlets of the three hydraulic control one-way valves are shunted to the pressurizing fluid outlet (P5), and oil outlets of the three two-position two-way electromagnetic reversing valves are shunted to the non-pressurizing-fluid outlet (P2); and the two-position two-way electromagnetic reversing valves, the three-position four-way electromagnetic reversing valve (10) and the two-position three-way electromagnetic reversing valves are controlled by signals of a controller (11).
Date Recue/Date Received 2022-03-01 the hydraulic oil loop comprises a hydraulic oil inlet (P3) and a hydraulic oil return port (P4), and the control part of the hydraulic oil loop comprises a three-position four-way electromagnetic reversing valve (10), wherein hydraulic oil enters the hydraulic cavity (C1) on the left from the oil inlet (P3) through the three-position four-way electromagnetic reversing valve (10), and hydraulic oil in the hydraulic cavity (C1) on the right returns to the hydraulic oil return port (P4) through the three-position four-way electromagnetic reversing valve (10);
the pressurizing fluid loop comprises a pressurizing fluid inlet (P1), a non-pressurizing-fluid outlet (P2) and a pressurizing fluid outlet (P5), and the control part of the pressurizing fluid loop comprises hydraulic control one-way valves, two-position two-way electromagnetic reversing valves and two-position three-way electromagnetic reversing valves, wherein a low pressure fluid entering from the pressurizing fluid inlet (P1) respectively enters the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right, the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the right and the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right, right positions of three two-position three-way electromagnetic reversing valves are shunted to the hydraulic cavity (C1) on the left, a left position of a first two-position three-way electromagnetic reversing valve (9-1) is connected to a control port of a first hydraulic control one-way valve (7-1), a left position of a second two-position three-way electromagnetic reversing valve (9-2) is connected to a control port of a second hydraulic control one-way valve (7-2), and a left position of a third two-position three-way electromagnetic reversing valve (9-3) is connected to a control port of a third hydraulic control one-way valve (7-3); the fluid in the pressurizing fluid loop flowing out through the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right is respectively connected to the first hydraulic control one-way valve (7-1) and an oil inlet of a first two-position two-way electromagnetic reversing valve (8-1), the fluid in the pressurizing fluid loop flowing out through the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the Date Recue/Date Received 2022-03-01 right is respectively connected to the second hydraulic control one-way valve (7-2) and an oil inlet of a second two-position two-way electromagnetic reversing valve (8-2), the fluid in the pressurizing fluid loop flowing out through the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right is respectively connected to the third hydraulic control one-way valve (7-3) and an oil inlet of a third two-position two-way electromagnetic reversing valve (8-3), oil outlets of the three hydraulic control one-way valves are shunted to the pressurizing fluid outlet (P5), and oil outlets of the three two-position two-way electromagnetic reversing valves are shunted to the non-pressurizing-fluid outlet (P2); and the two-position two-way electromagnetic reversing valves, the three-position four-way electromagnetic reversing valve (10) and the two-position three-way electromagnetic reversing valves are controlled by signals of a controller (11).
2. The multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate according to claim 1, wherein the control part of the pressurizing fluid loop further comprises one-way valves, a one-way valve one (6-1) being disposed on an oil line connecting the pressurizing fluid inlet (P1) to the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right, a one-way valve two (6-2) being disposed on an oil line connecting the pressurizing fluid inlet (P
1) to the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the right, a one-way valve three (6-3) being disposed on an oil line connecting the pressurizing fluid inlet (P1) to the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right, a one-way valve four (6-4) being disposed on an oil line connecting the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right and the first hydraulic control one-way valve (7-1) to the oil inlet of the first two-position two-way electromagnetic reversing valve (8-1), a one-way valve five (6-5) being disposed on an oil line connecting the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the right and the second hydraulic control one-way Date Recue/Date Received 2022-03-01 valve (7-2) to the oil inlet of the second two-position two-way electromagnetic reversing valve (8-2), and a one-way valve six (6-6) being disposed on an oil line connecting the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right and the third hydraulic control one-way valve (7-3) to the oil inlet of the third two-position two-way electromagnetic reversing valve (8-3).
1) to the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the right, a one-way valve three (6-3) being disposed on an oil line connecting the pressurizing fluid inlet (P1) to the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right, a one-way valve four (6-4) being disposed on an oil line connecting the first-stage pressurizing cavity (C2) on the left and the first-stage pressurizing cavity (C2) on the right and the first hydraulic control one-way valve (7-1) to the oil inlet of the first two-position two-way electromagnetic reversing valve (8-1), a one-way valve five (6-5) being disposed on an oil line connecting the second-stage pressurizing cavity (C3) on the left and the second-stage pressurizing cavity (C3) on the right and the second hydraulic control one-way Date Recue/Date Received 2022-03-01 valve (7-2) to the oil inlet of the second two-position two-way electromagnetic reversing valve (8-2), and a one-way valve six (6-6) being disposed on an oil line connecting the third-stage pressurizing cavity (C4) on the left and the third-stage pressurizing cavity (C4) on the right and the third hydraulic control one-way valve (7-3) to the oil inlet of the third two-position two-way electromagnetic reversing valve (8-3).
3. The multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate according to claim 2, wherein an electromagnetic stroke limit switch (2) is disposed in limit positions at two ends of the hydraulic cavity (C1) on the left and the hydraulic cavity (C1) on the right, and the electromagnetic stroke limit switch (2) is in signal connection to the controller (11).
4. The multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate according to claim 3, wherein the first-stage piston rod (12), the second-stage piston rod (4) and the third-stage piston rod (13) use a same diameter.
5. The multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate according to claim 4, wherein the third-stage piston rod (13) and the third-stage pressurizing piston (14) are in a plunger structure.
6. The multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate according to any one of claims 1 to 5, wherein the pressurizer is guided and sealed by using a sealing element, a supporting ring and a guiding ring; a position in which bidirectional sealing is needed is sealed by using a rectangular ring made of high attrition resistance polytetrafluorethylene composite materials and a bidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings, and a position in which unidirectional sealing is needed is sealed by using a step-shaped ring made of high attrition resistance polytetrafluorethylene composite materials and a unidirectional-rubber-combination-type slipping sealing ring made by combining 0-shaped rubber sealing rings.
Date Recue/Date Received 2022-03-01
Date Recue/Date Received 2022-03-01
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366010.5A CN108679005B (en) | 2018-04-23 | 2018-04-23 | A kind of multistage Multipurpose hydraulic booster that pressure ratio is variable |
| CN201810366010.5 | 2018-04-23 | ||
| PCT/CN2018/106900 WO2019205471A1 (en) | 2018-04-23 | 2018-09-21 | Multi-stage multipurpose hydraulic pressurizer with variable pressurization rate |
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| Publication Number | Publication Date |
|---|---|
| CA3072526A1 CA3072526A1 (en) | 2019-10-31 |
| CA3072526C true CA3072526C (en) | 2023-01-24 |
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| CA3072526A Active CA3072526C (en) | 2018-04-23 | 2018-09-21 | Multipurpose multi-stage hydraulic pressurizer with variable pressurization rate |
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| Country | Link |
|---|---|
| JP (1) | JP6799238B2 (en) |
| CN (1) | CN108679005B (en) |
| CA (1) | CA3072526C (en) |
| RU (1) | RU2737073C1 (en) |
| WO (1) | WO2019205471A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108679008B (en) * | 2018-07-19 | 2020-06-16 | 江苏师范大学 | Continuous output supercharger with changeable supercharging ratio and control method |
| CN109764013B (en) * | 2019-01-28 | 2021-05-11 | 华北电力大学 | Hydraulic potential energy conversion device of self-synchronizing multistage hydraulic cylinder |
| CN111120242A (en) * | 2020-02-14 | 2020-05-08 | 德州学院 | Hydraulic control linkage pressurization injection device |
| CN111637109A (en) * | 2020-06-16 | 2020-09-08 | 凯盛重工有限公司 | Multi-oil-cylinder related accurate positioning system |
| CN114458644A (en) * | 2021-11-04 | 2022-05-10 | 中国海洋石油集团有限公司 | Using method of energy-saving supercharger |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102804A (en) * | 1981-12-11 | 1983-06-18 | Nippon Pneumatic Kogyo Kk | Cylinder unit with booster and oil pressure circuit for operating the same |
| JPS6218401U (en) * | 1985-07-17 | 1987-02-03 | ||
| RU2059895C1 (en) * | 1993-12-08 | 1996-05-10 | Виктор Трофимович Тяжелов | Two-stage pressure booster |
| US5971027A (en) * | 1996-07-01 | 1999-10-26 | Wisconsin Alumni Research Foundation | Accumulator for energy storage and delivery at multiple pressures |
| JP2002155902A (en) * | 2000-11-20 | 2002-05-31 | Nishiatsu Engineering Co Ltd | Multistage booster |
| CN101666339B (en) * | 2009-09-30 | 2011-10-05 | 山东交通学院 | Hydraulic pressurizer |
| CN102562686A (en) * | 2010-12-08 | 2012-07-11 | 西安众智惠泽光电科技有限公司 | Hydraulic system for double-acting supercharger |
| CN202301232U (en) * | 2011-09-19 | 2012-07-04 | 宁波汉商液压有限公司 | Double-effect reciprocating hydraulic pressure booster |
| JP5972625B2 (en) * | 2012-03-23 | 2016-08-17 | 住友重機械工業株式会社 | Fluid pressure booster |
| CN102602020A (en) * | 2012-03-29 | 2012-07-25 | 苏州市科林除尘设备有限公司 | Wire-wound hydraulic press with reciprocating multistage supercharger |
| CN202540773U (en) * | 2012-03-29 | 2012-11-21 | 苏州市科林除尘设备有限公司 | Winding type hydraulic machine provided with multi-stage reciprocating turbocharger |
| RU2513060C1 (en) * | 2012-11-27 | 2014-04-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет природообустройства" | Plunger-piston dual-action hydraulic booster |
| RU2645881C1 (en) * | 2016-09-14 | 2018-02-28 | Акционерное общество "Военно-промышленная корпорация "Научно-производственное объединение машиностроения" | Double action multiplicator |
-
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- 2018-04-23 CN CN201810366010.5A patent/CN108679005B/en active Active
- 2018-09-21 CA CA3072526A patent/CA3072526C/en active Active
- 2018-09-21 JP JP2020510603A patent/JP6799238B2/en active Active
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| RU2737073C1 (en) | 2020-11-24 |
| CN108679005A (en) | 2018-10-19 |
| JP2020527216A (en) | 2020-09-03 |
| CA3072526A1 (en) | 2019-10-31 |
| CN108679005B (en) | 2019-08-27 |
| JP6799238B2 (en) | 2020-12-16 |
| WO2019205471A1 (en) | 2019-10-31 |
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