CN103615431B - For the heat dissipation torque motor cover of hydraulic actuator servo valve - Google Patents
For the heat dissipation torque motor cover of hydraulic actuator servo valve Download PDFInfo
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- CN103615431B CN103615431B CN201310654207.6A CN201310654207A CN103615431B CN 103615431 B CN103615431 B CN 103615431B CN 201310654207 A CN201310654207 A CN 201310654207A CN 103615431 B CN103615431 B CN 103615431B
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- inner cover
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Abstract
The invention belongs to hydraulic actuator servo valve structure-design technique, relate to the improvement to the torque motor cover for hydraulic actuator servo valve.It is characterized in that: torque motor cover be one by inner cover (5) and the coaxial nestable double casing formed of outer cover (6), the outer surface of inner cover (5) has the radiating flow passage (5d) that groove arranged in parallel is formed.The present invention proposes a kind of heat dissipation torque motor cover for hydraulic actuator servo valve with heat dissipation potential, the performance affecting Servo-Valve Torque Motor under applied at elevated temperature environment can be avoided, ensure that the performance of hydraulic actuator servo valve meets the demands.
Description
Technical field
The invention belongs to hydraulic actuator servo valve structure-design technique, relate to the improvement to the torque motor cover for hydraulic actuator servo valve.
Background technique
The structure of current a kind of torque motor cover for hydraulic actuator servo valve is see Fig. 1, the torque motor 2 that it comprises valve body 1 and is arranged on valve body 1 torque motor mounting plane, have in the outside of torque motor 2 one with mounting flange, cross section is circular or the torque motor cover of rectangle, by screw 4, the mounting flange of torque motor cover is fixed on the torque motor mounting plane of valve body 1.Its shortcoming is: heat dissipation potential.Because the fluid medium temperature of hydraulic actuator servo valve inside is within the scope of-40 DEG C ~ 120 DEG C, in short-term can up to 130 DEG C; Environment serviceability temperature, in short-term can up to 250 DEG C at-55 DEG C ~ 215 DEG C.Under hot environment serviceability temperature, the performance of Servo-Valve Torque Motor can be affected, increase zero partially, finally make the performance of hydraulic actuator servo valve not reach requirement.
Summary of the invention
The object of the invention is: propose a kind of heat dissipation torque motor cover for hydraulic actuator servo valve with heat dissipation potential, to avoid the performance affecting Servo-Valve Torque Motor under applied at elevated temperature environment, guarantee that the performance of hydraulic actuator servo valve meets the demands.
Technological scheme of the present invention is: for the heat dissipation torque motor cover of hydraulic actuator servo valve, the torque motor 2 comprising valve body 1 and be arranged on valve body 1 torque motor mounting plane, have in the outside of torque motor 2 one with mounting flange, cross section is circular or the torque motor cover of rectangle, is fixed on the torque motor mounting plane of valve body 1 by screw 4 by the mounting flange of torque motor cover, it is characterized in that: torque motor cover be one by inner cover 5 and the coaxial nestable double casing formed of outer cover 6, the outer surface of inner cover 5 and the internal surface laminating of outer cover 6, the upper surface of inner cover 5 mounting flange and the lower surface laminating of outer cover 6 mounting flange, by screw 4, the mounting flange of the mounting flange of inner cover 5 and outer cover 6 is fixed on the torque motor mounting plane of valve body 1, on the lower surface of outer cover 6 mounting flange, the mounting flange seal groove that one annular is had near the position at mounting flange edge, mounting flange seal ring 7 is positioned at mounting flange seal groove, the outer surface of inner cover 5 has the radiating flow passage 5d that groove arranged in parallel is formed, on internal surface on the left of outer cover 6, an oil-feed tank 6c is had near the position of port, oil-feed tank 6c is communicated with the filler opening of all radiating flow passage 5d, the left side lower surface of outer cover 6 mounting flange has an outer cover oil inlet hole, this outer cover oil inlet hole is communicated with oil-feed tank 6c, on the upper surface of inner cover 5 mounting flange, there is an inner cover oil inlet hole 5c position corresponding with outer cover oil inlet hole, inner cover oil inlet hole 5c is a step hole, its epimere bore dia is greater than hypomere bore dia, inner cover oil inlet hole 5c is coaxial with outer cover oil inlet hole, inner cover oil inlet hole seal ring 8 is positioned at the upper sector hole of inner cover oil inlet hole 5c, inner cover oil inlet hole 5c is communicated with the oil-feed port of servovalve inside by the interior oil circuit of valve body 1, on internal surface on the right side of outer cover 6, an oil-return groove 6b is had near the position of port, oil-return groove 6b is communicated with the return opening of all radiating flow passage 5d, the right side lower surface of outer cover 6 mounting flange has an outer cover spill port, this outer cover spill port is communicated with oil-return groove 6b, on the upper surface of inner cover 5 mounting flange, there is an inner cover spill port 5b position corresponding with outer cover spill port, inner cover spill port 5b is a step hole, its epimere bore dia is greater than hypomere bore dia, inner cover spill port 5b is coaxial with outer cover spill port, inner cover spill port seal ring 9 is positioned at the upper sector hole of inner cover spill port 5b, inner cover spill port 5b is communicated with the return opening of servovalve inside by the interior oil circuit of valve body 1.
Advantage of the present invention is: propose a kind of heat dissipation torque motor cover for hydraulic actuator servo valve with heat dissipation potential, the performance affecting Servo-Valve Torque Motor under applied at elevated temperature environment can be avoided, ensure that the performance of hydraulic actuator servo valve meets the demands.
Accompanying drawing explanation
Fig. 1 is the structural representation of current a kind of torque motor cover for hydraulic actuator servo valve.
Fig. 2 is structural representation of the present invention.
Embodiment
Below the present invention is described in further details.See Fig. 2, for the heat dissipation torque motor cover of hydraulic actuator servo valve, the torque motor 2 comprising valve body 1 and be arranged on valve body 1 torque motor mounting plane, have in the outside of torque motor 2 one with mounting flange, cross section is circular or the torque motor cover of rectangle, is fixed on the torque motor mounting plane of valve body 1 by screw 4 by the mounting flange of torque motor cover, it is characterized in that: torque motor cover be one by inner cover 5 and the coaxial nestable double casing formed of outer cover 6, the outer surface of inner cover 5 and the internal surface laminating of outer cover 6, the upper surface of inner cover 5 mounting flange and the lower surface laminating of outer cover 6 mounting flange, by screw 4, the mounting flange of the mounting flange of inner cover 5 and outer cover 6 is fixed on the torque motor mounting plane of valve body 1, on the lower surface of outer cover 6 mounting flange, the mounting flange seal groove that one annular is had near the position at mounting flange edge, mounting flange seal ring 7 is positioned at mounting flange seal groove, the outer surface of inner cover 5 has the radiating flow passage 5d that groove arranged in parallel is formed, on internal surface on the left of outer cover 6, an oil-feed tank 6c is had near the position of port, oil-feed tank 6c is communicated with the filler opening of all radiating flow passage 5d, the left side lower surface of outer cover 6 mounting flange has an outer cover oil inlet hole, this outer cover oil inlet hole is communicated with oil-feed tank 6c, on the upper surface of inner cover 5 mounting flange, there is an inner cover oil inlet hole 5c position corresponding with outer cover oil inlet hole, inner cover oil inlet hole 5c is a step hole, its epimere bore dia is greater than hypomere bore dia, inner cover oil inlet hole 5c is coaxial with outer cover oil inlet hole, inner cover oil inlet hole seal ring 8 is positioned at the upper sector hole of inner cover oil inlet hole 5c, inner cover oil inlet hole 5c is communicated with the oil-feed port of servovalve inside by the interior oil circuit of valve body 1, on internal surface on the right side of outer cover 6, an oil-return groove 6b is had near the position of port, oil-return groove 6b is communicated with the return opening of all radiating flow passage 5d, the right side lower surface of outer cover 6 mounting flange has an outer cover spill port, this outer cover spill port is communicated with oil-return groove 6b, on the upper surface of inner cover 5 mounting flange, there is an inner cover spill port 5b position corresponding with outer cover spill port, inner cover spill port 5b is a step hole, its epimere bore dia is greater than hypomere bore dia, inner cover spill port 5b is coaxial with outer cover spill port, inner cover spill port seal ring 9 is positioned at the upper sector hole of inner cover spill port 5b, inner cover spill port 5b is communicated with the return opening of servovalve inside by the interior oil circuit of valve body 1.
In order to ensure radiating effect, on said inner cover 5 outer surface, the gross area of radiating flow passage 5d is not less than 30% of inner cover 5 exterior surface area.
Working principle of the present invention is: in hydraulic actuator servo valve working procedure, torque motor 2 in fluid medium temperature range-40 DEG C ~ 120 DEG C can normally work, in the ambient temperature range exceeding this temperature-55 DEG C ~ 215 DEG C, service behaviour is unstable, can decrease.Increase inner cover 5 in original outer cover 6 inside, the fluid medium of product valve body 1 inside is introduced between outer cover 6 and inner cover 5, form a heat dissipating layer in torque motor 2 periphery, guarantee torque motor 2 working stability.
One embodiment of the present of invention, on said inner cover 5 outer surface, the gross area of radiating flow passage 5d equals 50% of inner cover 5 exterior surface area.Prove through test, when Environmental Conditions temperature 200 DEG C, continuous operation 2 hours, the performance of Servo-Valve Torque Motor does not change, and ensure that the performance of hydraulic actuator servo valve meets the demands.
Claims (2)
1. for the heat dissipation torque motor cover of hydraulic actuator servo valve, comprise valve body (1) and be arranged on the torque motor (2) on valve body (1) torque motor mounting plane, have in the outside of torque motor (2) one with mounting flange, cross section is circular or the torque motor cover of rectangle, is fixed on the torque motor mounting plane of valve body (1) by screw (4) by the mounting flange of torque motor cover, it is characterized in that: torque motor cover be one by inner cover (5) and the coaxial nestable double casing formed of outer cover (6), the outer surface of inner cover (5) and the internal surface laminating of outer cover (6), the upper surface of inner cover (5) mounting flange and the lower surface laminating of outer cover (6) mounting flange, by screw (4), the mounting flange of the mounting flange of inner cover (5) and outer cover (6) is fixed on the torque motor mounting plane of valve body (1), on the lower surface of outer cover (6) mounting flange, the mounting flange seal groove that one annular is had near the position at mounting flange edge, mounting flange seal ring (7) is positioned at mounting flange seal groove, the outer surface of inner cover (5) has the radiating flow passage (5d) that groove arranged in parallel is formed, on the internal surface in outer cover (6) left side, an oil-feed tank (6c) is had near the position of port, oil-feed tank (6c) is communicated with the filler opening of all radiating flow passages (5d), the left side lower surface of outer cover (6) mounting flange has an outer cover oil inlet hole, this outer cover oil inlet hole is communicated with oil-feed tank (6c), on the upper surface of inner cover (5) mounting flange, there is an inner cover oil inlet hole (5c) position corresponding with outer cover oil inlet hole, inner cover oil inlet hole (5c) is a step hole, its epimere bore dia is greater than hypomere bore dia, inner cover oil inlet hole (5c) is coaxial with outer cover oil inlet hole, inner cover oil inlet hole seal ring (8) is positioned at the upper sector hole of inner cover oil inlet hole (5c), inner cover oil inlet hole (5c) is communicated with the oil-feed port of servovalve inside by the interior oil circuit of valve body (1), on the internal surface on outer cover (6) right side, an oil-return groove (6b) is had near the position of port, oil-return groove (6b) is communicated with the return opening of all radiating flow passages (5d), the right side lower surface of outer cover (6) mounting flange has an outer cover spill port, this outer cover spill port is communicated with oil-return groove (6b), on the upper surface of inner cover (5) mounting flange, there is an inner cover spill port (5b) position corresponding with outer cover spill port, inner cover spill port (5b) is a step hole, its epimere bore dia is greater than hypomere bore dia, inner cover spill port (5b) is coaxial with outer cover spill port, inner cover spill port seal ring (9) is positioned at the upper sector hole of inner cover spill port (5b), inner cover spill port (5b) is communicated with the return opening of servovalve inside by the interior oil circuit of valve body (1).
2. the heat dissipation torque motor cover for hydraulic actuator servo valve according to claim 1, is characterized in that: on said inner cover (5) outer surface, the gross area of radiating flow passage (5d) is not less than 30% of inner cover (5) exterior surface area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310654207.6A CN103615431B (en) | 2013-12-04 | 2013-12-04 | For the heat dissipation torque motor cover of hydraulic actuator servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310654207.6A CN103615431B (en) | 2013-12-04 | 2013-12-04 | For the heat dissipation torque motor cover of hydraulic actuator servo valve |
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| Publication Number | Publication Date |
|---|---|
| CN103615431A CN103615431A (en) | 2014-03-05 |
| CN103615431B true CN103615431B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310654207.6A Active CN103615431B (en) | 2013-12-04 | 2013-12-04 | For the heat dissipation torque motor cover of hydraulic actuator servo valve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958688A (en) * | 2017-04-27 | 2017-07-18 | 上海衡拓液压控制技术有限公司 | The oil return cooling structure of electrohydraulic servo valve |
| CN108252978A (en) * | 2018-03-05 | 2018-07-06 | 上海衡拓液压控制技术有限公司 | One-way type cooling oil path servo valve with throttling |
| EP3597938B1 (en) | 2018-07-20 | 2021-09-22 | Hamilton Sundstrand Corporation | Servovalve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3857541A (en) * | 1973-06-14 | 1974-12-31 | Moog Inc | Servovalve with oscillation filter |
| GB2124799A (en) * | 1982-07-23 | 1984-02-22 | Dowty Hydraulic Units Ltd | Electro-hydraulic servo valve |
| US4682063A (en) * | 1985-01-21 | 1987-07-21 | Mannesmann Rexroth Gmbh | Control motor for a servo valve |
| US4922963A (en) * | 1989-02-27 | 1990-05-08 | Hsc Controls Inc. | Hydraulic servovalve |
| CN2775363Y (en) * | 2005-02-02 | 2006-04-26 | 陈镇汉 | Dynamic pressure feedback electrohydraulic servo valve |
| CN201221619Y (en) * | 2008-06-25 | 2009-04-15 | 中国船舶重工集团公司第七○四研究所 | Preposition independent type jet flow tube electrohydraulic servo valve |
| CN201851415U (en) * | 2010-11-09 | 2011-06-01 | 韩晓新 | Electro-hydraulic servo valve |
| CN102146940A (en) * | 2011-05-05 | 2011-08-10 | 杭州新坐标科技股份有限公司 | Floating type servo valve |
| FR2980250A1 (en) * | 2011-09-21 | 2013-03-22 | Snecma | Servo valve for dispensing fuel to aircraft engine, has liquid injector connected to high pressure liquid supply opening, where leakage flow of liquid emerges in volume surrounding servo valve, and passes through recovery pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7726340B2 (en) * | 2006-11-09 | 2010-06-01 | Honeywell International Inc. | Flexible, hermetic pivot seal for torque motor |
-
2013
- 2013-12-04 CN CN201310654207.6A patent/CN103615431B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3857541A (en) * | 1973-06-14 | 1974-12-31 | Moog Inc | Servovalve with oscillation filter |
| GB2124799A (en) * | 1982-07-23 | 1984-02-22 | Dowty Hydraulic Units Ltd | Electro-hydraulic servo valve |
| US4682063A (en) * | 1985-01-21 | 1987-07-21 | Mannesmann Rexroth Gmbh | Control motor for a servo valve |
| US4922963A (en) * | 1989-02-27 | 1990-05-08 | Hsc Controls Inc. | Hydraulic servovalve |
| CN2775363Y (en) * | 2005-02-02 | 2006-04-26 | 陈镇汉 | Dynamic pressure feedback electrohydraulic servo valve |
| CN201221619Y (en) * | 2008-06-25 | 2009-04-15 | 中国船舶重工集团公司第七○四研究所 | Preposition independent type jet flow tube electrohydraulic servo valve |
| CN201851415U (en) * | 2010-11-09 | 2011-06-01 | 韩晓新 | Electro-hydraulic servo valve |
| CN102146940A (en) * | 2011-05-05 | 2011-08-10 | 杭州新坐标科技股份有限公司 | Floating type servo valve |
| FR2980250A1 (en) * | 2011-09-21 | 2013-03-22 | Snecma | Servo valve for dispensing fuel to aircraft engine, has liquid injector connected to high pressure liquid supply opening, where leakage flow of liquid emerges in volume surrounding servo valve, and passes through recovery pipe |
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| CN103615431A (en) | 2014-03-05 |
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