CN217603051U - Fire-proof fault safety type straight stroke electro-hydraulic actuator - Google Patents
Fire-proof fault safety type straight stroke electro-hydraulic actuator Download PDFInfo
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- CN217603051U CN217603051U CN202221115476.6U CN202221115476U CN217603051U CN 217603051 U CN217603051 U CN 217603051U CN 202221115476 U CN202221115476 U CN 202221115476U CN 217603051 U CN217603051 U CN 217603051U
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Abstract
The utility model relates to a fire prevention trouble safety type straight stroke electricity liquid actuating mechanism, including hydraulic power control system, hydro-cylinder, quick reset system and energy storage ware, hydraulic power control system comprises hydraulic pressure integrated valves, inverter motor, oil tank, the two-way gear pump of taking the fire prevention drainage valve, inverter motor direct drive two-way gear pump promotes hydro-cylinder reciprocating motion, by the punching press to the energy storage ware when hydro-cylinder direct drive valve realizes the switch, the beneficial effects of the utility model are that: the bidirectional gear pump is coaxially driven by the bidirectional variable frequency motor to carry out synchronous and rapid reversing.
Description
Technical Field
The utility model relates to a valve actuator field, concretely relates to fire fault safety type straight stroke electricity liquid actuating mechanism.
Background
The fireproof failure safety type straight stroke electro-hydraulic actuator is applied to an automatic instrument control system, is matched with a gate valve, a stop valve, an air door and the like, and realizes control of the valve. Conventional electro-hydraulic actuators are typically connected directly to the pump or hydraulic station by an electronic control system. The electro-hydraulic servo valve is a heart of an electro-hydraulic control system, is an electro-hydraulic/hydraulic conversion element and a power amplification element, is controlled by an electric signal to be converted into high-power hydraulic energy, and outputs the high-power hydraulic energy to an execution element (a hydraulic cylinder); the electro-hydraulic servo valve consists of three parts, namely an electric/mechanical conversion device, a hydraulic amplifier and a feedback device, is also equivalent to the principle of an electric/air valve positioner, and has the advantages of pollution resistance and poor stability. The valve has the defects of large volume, easy occurrence of phenomena of oil leakage, leakage and the like at a high-pressure point, frequent occurrence of unstable pressure, and further failure of opening and closing the valve.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art,
the fire-proof failure safety type straight-stroke electro-hydraulic actuator combines the bidirectional gear pump and the motor in bidirectional driving and is applied to the positive and negative movement of an actuator, so that the system structure is simplified.
In order to achieve the above purpose, the utility model provides a following technical scheme: fire prevention trouble safety type straight stroke electricity liquid actuating mechanism, including hydraulic power control system, hydro-cylinder, quick reset system and energy storage ware, its characterized in that: the hydraulic power control system is composed of a hydraulic integrated valve group with a fire-proof discharge valve, a variable frequency motor, an oil tank and a bidirectional gear pump, wherein the variable frequency motor directly drives the bidirectional gear pump to push an oil cylinder to reciprocate, and the oil cylinder directly pushes a valve to realize switching and simultaneously presses an energy accumulator.
By adopting the technical scheme, the bidirectional variable frequency motor is adopted to coaxially and flexibly drive the bidirectional gear pump, and the reciprocating motion of the hydraulic cylinder is controlled by the hydraulic integrated system to realize the opening and closing of the valve; set up fire prevention safety fault system, quick reset hydraulic control system and energy storage ware, give the energy storage ware punching press and set up and carry out fire prevention fault protection by the fire prevention drainage valve at valve end, and traditional hydraulic actuator is that control commutates through hydraulic pressure proportional valve or servo valve, and its hydraulic system is complicated, the switching-over is poor with the regulation precision, reaction rate is slower, and the utility model discloses a synchronous quick switching-over is realized to the coaxial drive gear pump of inverter motor, has improved reliability, the controllability of switching-over precision and unit operation, and has the adjustable speed function.
The fire-proof fault safety type straight stroke electro-hydraulic actuator can be further set as follows: the hydraulic integrated valve group is arranged in an oil tank, the variable frequency motor directly drives the bidirectional gear pump, and the variable frequency motor is set to rotate forwards and backwards to realize the forward and reverse rotation of the bidirectional gear pump, and realize the reversing function of an actuating mechanism connected with the valve and the stamping of an energy accumulator through the hydraulic integrated valve group.
By adopting the technical scheme, the hydraulic integrated valve group is arranged in the oil tank, so that the volume and the external leakage are reduced.
The fire-proof fault safety type straight stroke electro-hydraulic actuator can be further set as follows: the quick reset system comprises a reset integrated valve group, and the reset integrated valve group comprises a reset valve block, a fire-proof discharge valve, a throttle valve, a one-way valve and an electromagnetic valve.
By adopting the technical scheme, when the site environment temperature reaches the set temperature of the thermosensitive element of the fireproof discharging valve in the case of fire, the fireproof discharging valve is opened, the high-pressure oil stored in the energy accumulator is released into the oil-free cavity of the oil cylinder, and the valve is directly pushed by the oil cylinder to realize quick cut-off; when a fault occurs, the actuating mechanism receives an emergency signal, the electromagnetic valve is energized in a power-off mode, high-pressure oil stored in the energy accumulator is released into an oil-free cavity of the oil cylinder, and the oil cylinder directly pushes the valve to achieve rapid cut-off of the valve.
The fire-proof fault safety type straight stroke electro-hydraulic actuator can be further set as follows: and a hydraulic manual operation mechanism is installed on one side of the hydraulic power control system and consists of a manual valve block, a manual reversing valve, a manual pump and a hydraulic lock.
By adopting the technical scheme, when the hydraulic power control system fails, the valve is switched on and off emergently through the hydraulic manual operation mechanism, the manual reversing valve is installed on one side of the hydraulic lock, the manual pump is installed on the hydraulic lock, the hydraulic lock is actually a lock consisting of two hydraulic control one-way valves, the locking loop of the hydraulic lock is changed through the manual reversing valve, so that the oil path can be in forward or reverse circulation, and the manual pump is used for pumping oil to realize manual valve switching.
The beneficial effects of the utility model are that: the bidirectional gear pump is coaxially driven by the bidirectional variable frequency motor to carry out synchronous and rapid reversing; and traditional hydraulic actuator is through hydraulic pressure proportional valve or servo valve control switching-over, and its hydraulic system is complicated, the switching-over is poor with the regulation precision, the reaction rate is slower, just the utility model discloses can realize the regulation of valve and the conflagration trouble and break off fast when breaking down, cancel traditional hydraulic control system's huge hydraulic pressure station, reduce volume widely, save material, save investment, multiple functional, compact structure, small, light in weight, reaction sensitivity.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram 1 of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram 2 of an embodiment of the present invention.
Detailed Description
Referring to fig. 1-2: the fire-proof fault safety type straight-stroke electro-hydraulic actuator comprises a hydraulic power control system 1, an oil cylinder 2, a quick reset system 3 and an energy accumulator 4, wherein the hydraulic power control system 1 comprises a hydraulic integrated valve group with a fire-proof discharge valve, a variable frequency motor 12, an oil tank 13 and a bidirectional gear pump 14, the variable frequency motor 12 directly drives the bidirectional gear pump 14 to push the oil cylinder 2 to reciprocate, the oil cylinder 2 directly pushes a valve to realize opening and closing and simultaneously punch the energy accumulator 4, the hydraulic integrated valve group is arranged in the oil tank 13, the variable frequency motor 12 directly drives the bidirectional gear pump 14, the variable frequency motor 12 is set to rotate forwards and backwards to realize the reversing function of the bidirectional gear pump 14 and realize the reversing function of an actuator connected with the valve through the hydraulic integrated valve group and punch the energy accumulator 4, the quick reset system 3 comprises a reset integrated valve group, the reset valve group comprises a reset valve block 311, the fire-proof discharge valve 312, a throttle 313, a one-way valve 314 and an electromagnetic valve 315, a hydraulic manual operation mechanism 5 is installed on one side of the hydraulic power control system 1, and the hydraulic manual operation mechanism 5 comprises a manual valve block 51, a manual operation valve 52, a manual operation valve 53 and a hydraulic lock 54.
Claims (4)
1. Fire prevention trouble safety type straight stroke electricity liquid actuating mechanism, including hydraulic power control system, hydro-cylinder, quick reset system and energy storage ware, its characterized in that: the hydraulic power control system is composed of a hydraulic integrated valve group with a fireproof discharge valve, a variable frequency motor, an oil tank and a bidirectional gear pump, wherein the variable frequency motor directly drives the bidirectional gear pump to push an oil cylinder to reciprocate, and the oil cylinder directly pushes a valve to realize switching and simultaneously presses an energy accumulator.
2. The fire-failure safe straight-stroke electro-hydraulic actuator according to claim 1, characterized in that: the hydraulic integrated valve group is arranged in an oil tank, the variable frequency motor directly drives the bidirectional gear pump, and the variable frequency motor is set to rotate forwards and backwards to realize the forward and reverse rotation of the bidirectional gear pump, and realize the reversing function of an actuating mechanism connected with the valve and the stamping of an energy accumulator through the hydraulic integrated valve group.
3. The fire-proof, fault-safe, straight-stroke electro-hydraulic actuator according to claim 1 or 2, characterized in that: the quick reset system comprises a reset integrated valve group, and the reset integrated valve group comprises a reset valve block, a fire-proof discharge valve, a throttle valve, a one-way valve and an electromagnetic valve.
4. The fire-proof, fault-safe, straight-stroke electro-hydraulic actuator according to claim 1 or 2, characterized in that: and a hydraulic manual operation mechanism is installed on one side of the hydraulic power control system and consists of a manual valve block, a manual reversing valve, a manual pump and a hydraulic lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221115476.6U CN217603051U (en) | 2022-05-09 | 2022-05-09 | Fire-proof fault safety type straight stroke electro-hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221115476.6U CN217603051U (en) | 2022-05-09 | 2022-05-09 | Fire-proof fault safety type straight stroke electro-hydraulic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217603051U true CN217603051U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221115476.6U Active CN217603051U (en) | 2022-05-09 | 2022-05-09 | Fire-proof fault safety type straight stroke electro-hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217603051U (en) |
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2022
- 2022-05-09 CN CN202221115476.6U patent/CN217603051U/en active Active
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