CN111043095B - Zero-leakage double-hydraulic-system conversion device - Google Patents
Zero-leakage double-hydraulic-system conversion device Download PDFInfo
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- CN111043095B CN111043095B CN201911364053.0A CN201911364053A CN111043095B CN 111043095 B CN111043095 B CN 111043095B CN 201911364053 A CN201911364053 A CN 201911364053A CN 111043095 B CN111043095 B CN 111043095B
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention belongs to the field of hydraulic control, and relates to a zero-leakage double-hydraulic-system conversion device which mainly comprises a valve body, a driving device, a feedback device, a reset device, a conversion slide valve pair and a one-way valve, wherein the driving device, the feedback device, the reset device, the conversion slide valve pair and the one-way valve are arranged on the valve body. The conversion device is connected with the two sets of hydraulic energy systems A and B, the hydraulic energy of A works for a long time, the hydraulic energy of B is backed up, and when the hydraulic energy of A fails, the hydraulic energy of B is switched to the energy system of B through the conversion device. The return oil path keeps zero leakage through a sealing structure of an end face and a conical surface on the conversion slide valve pair, and before and after A, B system switching is realized through the one-way valve on the oil inlet path, the leakage between A, B systems is zero.
Description
Technical Field
The invention belongs to the technical field of aviation hydraulic pressure, and relates to a zero-leakage double-hydraulic-system conversion device.
Background
A common hydraulic system usually controls one set of hydraulic load through one set of hydraulic system, but in a hydraulic system with high requirements on space, weight and safety, more than two sets of hydraulic systems are used for acting on one set of hydraulic load together, so that switching between the two sets of hydraulic systems needs to be realized through a dual-system switching device, and leakage is not allowed between the two systems before and after switching.
Disclosure of Invention
In order to solve the problems, the invention provides a zero-leakage double-hydraulic-system conversion device, which realizes the switching between two systems and simultaneously ensures that no leakage is allowed between the two systems before and after the switching.
The technical scheme of the invention is as follows: a zero-leakage double-hydraulic-system conversion device comprises a valve body and a driving device, wherein the valve body is connected with the driving device, the valve body is connected with two sets of hydraulic energy systems, namely a hydraulic energy system A and a hydraulic energy system B, the valve body comprises a valve sleeve and a conversion slide valve pair, the connection side of the conversion slide valve pair and the hydraulic energy system A is an A side, the conversion slide valve pair is provided with an oil inlet pipe orifice PA, an oil return pipe orifice RA and a ring groove orifice PA ', the connection side of the conversion slide valve pair and the hydraulic energy system B is a B side, and the conversion slide valve pair is provided with an oil inlet pipe orifice PB, an oil return pipe orifice RB and a ring groove orifice PB'; a middle cavity is arranged between the middle part of the conversion slide valve pair and the valve sleeve, and a load pipe orifice PL and a load pipe orifice RL are arranged on the middle cavity; and two isolation structures are arranged on the conversion slide valve pair, one isolation structure blocks the communication between the middle cavity and the side of the conversion slide valve pair B when the hydraulic energy system A is communicated, and the other isolation structure blocks the communication between the middle cavity and the side of the conversion slide valve pair A when the hydraulic energy system B is communicated.
Furthermore, the conversion slide valve pair is of a split structure and comprises an A-side conversion valve sleeve, a B-side conversion valve sleeve, an A-side conversion valve core and a B-side conversion valve core.
Furthermore, the A-side conversion valve sleeve is a cylindrical part with a conversion slide valve pair arranged on the A side, one end of the A-side conversion valve core is arranged in the A-side conversion valve sleeve, the other end of the A-side conversion valve core is arranged in the middle cavity and connected with the B-side conversion valve core, and the A-side conversion valve core is provided with a step structure and is matched with the A-side conversion valve sleeve to form an A-side isolation structure.
Furthermore, the step surface of the A-side conversion valve core is a plane, the contact surface of the A-side conversion valve sleeve and the step of the A-side conversion valve core is a plane, and the isolation structure of the A-side is an end face sealing structure.
Furthermore, a B-side conversion valve sleeve is a cylindrical part with a conversion slide valve pair arranged on the B side, one end of a B-side conversion valve core is arranged in the B-side conversion valve sleeve, the other end of the B-side conversion valve core is arranged in the middle cavity and connected with the A-side conversion valve core, and a step structure is arranged on the B-side conversion valve core and matched with the A-side conversion valve sleeve to form a B-side isolation structure.
Furthermore, the step surface of the B-side conversion valve core is a conical surface, the contact surface of the B-side conversion valve sleeve and the step of the B-side conversion valve core is a conical surface, and the isolation structure of the B-side is a conical surface sealing structure.
Further, the device also comprises an A-side check valve and a B-side check valve; the A-side check valve is arranged on a passage between the ring notch PA 'and the load pipe orifice PL, and the B-side check valve is arranged on a passage between the ring notch PB' and the load pipe orifice PL; when the A-side check valve is opened, the B-side check valve is closed, and when the B-side check valve is opened, the A-side check valve is closed.
Furthermore, the valve body is a split type valve body and comprises a first valve body and a second valve body, the A-side conversion valve sleeve and the A-side conversion valve core are arranged in the first valve body, and the B-side conversion valve sleeve and the B-side conversion valve core are arranged in the second valve body.
The invention has the beneficial effects that: the zero-leakage double-system conversion device can reliably realize the conversion between the two systems and ensure that no leakage is allowed between the two systems before and after the switching.
Drawings
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the section A-A of FIG. 1 with the device of the present invention in operation in the hydraulic system A;
FIG. 3 is a schematic view of the cross-section B-B of FIG. 1 illustrating the operation of the hydraulic system A according to the embodiment of the present invention;
FIG. 4 is a schematic view of the cross-section A-A of FIG. 1 illustrating operation of the hydraulic system B according to an embodiment of the present invention;
FIG. 5 is a schematic view of the cross-section B-B of FIG. 1 with the apparatus of the present invention in operation in the hydraulic system B;
FIG. 6 is an enlarged partial schematic view of the conical seal of FIG. 2 during operation of the hydraulic system A in accordance with an embodiment of the present invention;
FIG. 7 is an enlarged partial schematic view of the face seal of FIG. 4 with the apparatus of the present invention in operation in the A hydraulic system;
the automatic change-over valve comprises a valve body 1, a valve body 2, a driving device 3, a feedback device 4, a reset device 5, a conversion slide valve pair, a check valve 6, a side change-over valve sleeve 5-a-A, a side change-over valve sleeve 5-B-B, a side change-over valve core 5-c-A, a side change-over valve core 5-d-B, a check valve 6-a-A, a check valve 6-B-B, a first valve body 1-a and a second valve body 1-B.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
A zero-leakage double-hydraulic-system conversion device comprises a valve body 1 and a driving device 2, wherein the valve body 1 is connected with the driving device 2, the valve body 1 is connected with two sets of hydraulic energy systems, namely a hydraulic energy system A and a hydraulic energy system B, the valve body 1 comprises a valve sleeve and a conversion slide valve pair 5, the connection side of the conversion slide valve pair 5 and the hydraulic energy system A is the side A, and is provided with an oil inlet pipe orifice PA, an oil return pipe orifice RA and a ring groove orifice PA ', the connection side of the conversion slide valve pair 5 and the hydraulic energy system B is the side B, and is provided with an oil inlet pipe orifice PB, an oil return pipe orifice RB and a ring groove orifice PB'; a middle cavity is arranged between the middle part of the conversion slide valve pair 5 and the valve sleeve, and a load pipe orifice PL and a load pipe orifice RL are arranged on the middle cavity; two isolation structures are arranged on the conversion slide valve pair 5, one isolation structure blocks the communication between the middle cavity and the side of the conversion slide valve pair 5B when the hydraulic energy system A is communicated, and the other isolation structure blocks the communication between the middle cavity and the side of the conversion slide valve pair 5A when the hydraulic energy system B is communicated.
The conversion slide valve pair 5 is of a split structure and comprises an A-side conversion valve sleeve 5-a, a B-side conversion valve sleeve 5-B, an A-side conversion valve core 5-c and a B-side conversion valve core 5-d.
The side A switching valve sleeve 5-a is a cylindrical part with a switching slide valve pair 5 arranged on the side A, one end of a side A switching valve core 5-c is arranged in the side A switching valve sleeve 5-a, the other end of the side A switching valve core is arranged in a middle cavity and connected with a side B switching valve core 5-d, and a step structure is arranged on the side A switching valve core 5-c and matched with the side A switching valve sleeve 5-a to form an isolation structure on the side A. The step surface of the A-side conversion valve core 5-c is a plane, the contact surface of the A-side conversion valve sleeve 5-a and the step of the A-side conversion valve core 5-c is a plane, and the isolation structure of the A-side is an end face sealing structure.
The side B conversion valve sleeve 5-B is a cylindrical part with a conversion slide valve pair 5 arranged on the side B, one end of a side B conversion valve core 5-d is arranged in the side B conversion valve sleeve 5-B, the other end of the side B conversion valve core is arranged in a middle cavity and connected with the side A conversion valve core 5-c, and a step structure is arranged on the side B conversion valve core 5-d and matched with the side A conversion valve sleeve 5-a to form an isolation structure on the side B. The step surface of the B-side conversion valve core 5-d is a conical surface, the contact surface of the B-side conversion valve sleeve 5-B and the step of the B-side conversion valve core 5-d is a conical surface, and the isolation structure of the B-side is a conical surface sealing structure.
The device also comprises a side A check valve 6-a and a side B check valve 6-B; a-side check valve 6-a is provided in the passage between the ring notch PA 'and the load port PL, and B-side check valve 6-B is provided in the passage between the ring notch PB' and the load port PL; when the A-side check valve 6-a is opened, the B-side check valve 6-B is closed, and when the B-side check valve 6-B is opened, the A-side check valve 6-a is closed.
The valve body 1 is a split valve body and comprises a first valve sub-body 1-a and a second valve sub-body 1-B, an A-side conversion valve sleeve 5-a and an A-side conversion valve core 5-c are arranged in the first valve sub-body 1-a, and a B-side conversion valve sleeve 5-B and a B-side conversion valve core 5-d are arranged in the second valve sub-body 1-B.
Another embodiment of the present invention is described below with reference to the drawings.
The general structure of the device of the invention is shown in figure 1, comprising a valve body 1, a driving device 2, a feedback device 3, a reset device 4, a conversion slide valve pair 5 and a one-way valve 6, wherein the driving device 2, the feedback device 3, the reset device 4, the conversion slide valve pair 5 and the one-way valve 6 are arranged on the valve body 1. The conversion device is connected with the two sets of hydraulic energy systems A and B, the hydraulic energy of A works for a long time, the hydraulic energy of B is backed up, and when the hydraulic energy of A fails, the hydraulic energy of B is switched to the energy system of B through the conversion device. The return oil path keeps zero leakage through the end face and conical surface sealing structures on the conversion slide valve pair 5, and before and after A, B system switching is realized through the check valve 6, the leakage between A, B systems is zero.
The valve body 1 is a split valve body and comprises a first valve body 1-a and a second valve body 1-b, wherein an oil inlet pipe orifice PA and an oil return pipe orifice RA of a system A, and load pipe orifices PL and RL are arranged on the first valve body 1-a; an oil inlet pipe orifice PB and an oil return pipe orifice RB of the system B, a driving device 2 and a feedback device 3 are arranged on the second valve body 1-B;
the conversion slide valve pair 5 is of a split structure and comprises a conversion valve sleeve 5-a, a conversion valve sleeve 5-b, a conversion valve core 5-c and a conversion valve core 5-d;
the end surface of one side of the conversion valve sleeve 5-a and the end surface of one side of the conversion valve core 5-d form end surface sealing;
a step at one side of the conversion valve core 5-d and the conversion valve sleeve 5-b form conical surface sealing;
the check valve 6 comprises a set of paired check valves 6-a and 6-b;
the oil inlet ports of system A, B are distributed on both sides and the oil return ports are distributed on the adjacent sides.
This section is a further embodiment of the invention.
Please refer to fig. 1 to 5, which are schematic structural diagrams and structural embodiments of the present invention.
During normal operation, as shown in fig. 2, the oil inlet pressure PA of the system a acts on the left side of the slide valve pair 5, the pressure on the right side of the slide valve pair 5 is 0, the slide valve pair 5 enables PA to be communicated with PL and RL to be communicated with RA under the action of the pressure PA and the spring force of the reset device 4. At the same time, PL is connected to the load through the internal oil passage-opening check valve 6-a of the valve body 1, as shown in FIG. 3.
At this time, the linear sealing section formed by the conical surface seal between the slide valve pairs 5-b and 5-d realizes zero-leakage sealing on the oil return side, as shown in fig. 6, and at the same time, the check valve 6-b with zero-leakage function is closed, and zero-leakage sealing on the oil inlet side is realized.
When the pressure of the hydraulic system A is reduced due to the rupture of a system pipeline and the like, the switching device enables the pressure of the switching slide valve pair 5-d to be increased to the system B oil inlet pressure PB through the driving device 2, and due to the fact that the diameter of the right side end face of the switching slide valve pair 5-d is larger than that of the left side end face of the switching slide valve pair 5-c, the slide valve pair 5 compresses the resetting device 4 under the action of the pressure difference, the PB is communicated with PL, and the RL is communicated with RB. At the same time, PL is connected to the load through the internal oil passage-opening check valve 6-b of the valve body 1, as shown in FIGS. 2 and 4.
At this time, the zero-leakage sealing on the oil return side is realized by the surface sealing section formed by the end surface sealing between the slide valve pairs 5-a and 5-d, as shown in fig. 7, and simultaneously, the check valve 6-a with the zero-leakage function is closed, and the zero-leakage sealing on the oil inlet side is realized.
When the system A is in fault, the upper computer switches the conversion slide valve pair 5 back to the position shown in FIG. 2 through the driving device 2, and the system A is communicated with the load.
When the two systems are parked on the ground, the conversion slide valve pair 5 is used for defaulting the communication between the system A and the load under the action of the resetting device 4.
Claims (5)
1. A zero-leakage double-hydraulic-system conversion device is characterized by comprising a valve body (1) and a driving device (2), wherein the valve body (1) is connected with the driving device (2), the valve body (1) is connected with two sets of hydraulic energy systems, namely a hydraulic energy system A and a hydraulic energy system B, and comprises a valve sleeve and a conversion slide valve pair (5), the connection side of the conversion slide valve pair (5) and the hydraulic energy system A is an A side, the conversion slide valve pair is provided with an oil inlet pipe orifice PA, an oil return pipe orifice RA and a ring groove orifice PA ', the connection side of the conversion slide valve pair (5) and the hydraulic energy system B is a B side, and the conversion slide valve pair is provided with an oil inlet pipe orifice PB, an oil return pipe orifice RB and a ring groove orifice PB'; a middle cavity is arranged between the middle part of the conversion slide valve pair (5) and the valve sleeve, and a load pipe orifice PL and a load pipe orifice RL are arranged on the middle cavity; two isolation structures are arranged on the conversion sliding valve pair (5), one isolation structure blocks the communication between the middle cavity and the side B of the conversion sliding valve pair (5) when the hydraulic energy system A is communicated, and the other isolation structure blocks the communication between the middle cavity and the side A of the conversion sliding valve pair (5) when the hydraulic energy system B is communicated;
the conversion slide valve pair (5) is of a split structure and comprises an A-side conversion valve sleeve (5-a), a B-side conversion valve sleeve (5-B), an A-side conversion valve core (5-c) and a B-side conversion valve core (5-d);
the side A switching valve sleeve (5-a) is a cylindrical part with a switching slide valve pair (5) arranged on the side A, one end of a side A switching valve core (5-c) is arranged in the side A switching valve sleeve (5-a), the other end of the side A switching valve core is arranged in a middle cavity and is connected with a side B switching valve core (5-d), and a step structure is arranged on the side A switching valve core (5-c) and is matched with the side A switching valve sleeve (5-a) to form an isolation structure of the side A;
the side B conversion valve sleeve (5-B) is a cylindrical part with a conversion slide valve pair (5) arranged on the side B, one end of a side B conversion valve core (5-d) is arranged in the side B conversion valve sleeve (5-B), the other end of the side B conversion valve core is arranged in a middle cavity and connected with the side A conversion valve core (5-c), and a step structure is arranged on the side B conversion valve core (5-d) and matched with the side A conversion valve sleeve (5-a) to form an isolation structure on the side B.
2. The zero-leakage dual hydraulic system switching device as claimed in claim 1, wherein the step surface of the a-side switching spool (5-c) is a plane, the contact surface of the a-side switching valve sleeve (5-a) and the step of the a-side switching spool (5-c) is a plane, and the isolation structure of the a-side is an end face seal structure.
3. The zero-leakage dual hydraulic system switching device as claimed in claim 1, wherein the step surface of the B-side switching spool (5-d) is a conical surface, the contact surface of the B-side switching valve sleeve (5-B) and the step of the B-side switching spool (5-d) is a conical surface, and the isolation structure of the B-side is a conical surface sealing structure.
4. A zero-leakage dual hydraulic system switching device according to claim 1, further comprising a side a check valve (6-a) and a side B check valve (6-B); a side a check valve (6-a) is provided in the passage between the ring notch PA 'and the load port PL, and a side B check valve (6-B) is provided in the passage between the ring notch PB' and the load port PL; when the A-side check valve (6-a) is opened, the B-side check valve (6-B) is closed, and when the B-side check valve (6-B) is opened, the A-side check valve (6-a) is closed.
5. The zero-leakage dual-hydraulic-system switching device as claimed in claim 2, wherein the valve body (1) is a split valve body and comprises a first valve sub-body (1-a) and a second valve sub-body (1-B), an A-side switching valve sleeve (5-a) and an A-side switching valve core (5-c) are arranged in the first valve sub-body (1-a), and a B-side switching valve sleeve (5-B) and a B-side switching valve core (5-d) are arranged in the second valve sub-body (1-B).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364053.0A CN111043095B (en) | 2019-12-25 | 2019-12-25 | Zero-leakage double-hydraulic-system conversion device |
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| CN201911364053.0A CN111043095B (en) | 2019-12-25 | 2019-12-25 | Zero-leakage double-hydraulic-system conversion device |
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| CN111043095A CN111043095A (en) | 2020-04-21 |
| CN111043095B true CN111043095B (en) | 2022-02-22 |
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| CN112746999B (en) * | 2021-01-08 | 2024-05-28 | 涌镇液压机械（上海）有限公司 | Leakage type reversing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2685623Y (en) * | 2004-02-18 | 2005-03-16 | 王春山 | Air control lift valve |
| CN201650906U (en) * | 2010-01-19 | 2010-11-24 | 浙江大学 | Special rotary reversing valve of hydraulic vibration exciter |
| CN201844094U (en) * | 2010-10-22 | 2011-05-25 | 浙江工业大学 | Double-mode electrical digital valve |
| CN102454649B (en) * | 2010-10-28 | 2014-10-08 | 富泰华工业（深圳）有限公司 | Control valve |
| CN102518614B (en) * | 2011-12-27 | 2015-03-04 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Hydraulic switch valve |
| CN110107554B (en) * | 2019-05-07 | 2020-10-02 | 中航飞机起落架有限责任公司 | Change-over valve and undercarriage turn control system |
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