CN208734961U - Prevent the widened electro-hydraulic actuator of fire damage - Google Patents
Prevent the widened electro-hydraulic actuator of fire damage Download PDFInfo
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- CN208734961U CN208734961U CN201821362625.2U CN201821362625U CN208734961U CN 208734961 U CN208734961 U CN 208734961U CN 201821362625 U CN201821362625 U CN 201821362625U CN 208734961 U CN208734961 U CN 208734961U
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- valve
- oil
- oil cylinder
- hydraulic
- fusible plug
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Abstract
The utility model, which provides one kind, prevents the widened electro-hydraulic actuator of fire damage, and problem to be solved is: how fire damage to be avoided to expand.The main points of the utility model are: including solenoid directional control valve, accumulator and its oil pipe, fuel tank and its oil return line, one end of fusible plug pipeline and the control chamber of hydraulic directional valve connect on accumulator oil pipe, on another oil return line for terminating at fuel tank of fusible plug pipeline, hydraulic directional valve is in parallel with solenoid directional control valve when rotary oil cylinder drives valve to close.When generation fire, fusible plug fusing, fusible plug pipeline is open-minded, and the high pressure oil in fusible plug pipeline control chamber is released, and hydraulic directional valve is opened, the high pressure oil of accumulator is changed by hydraulic directional valve, into A oil cylinder port, while the apiezon oil in B oil cylinder flows back to fuel tank, and drive rack shifts to B oil cylinder from A oil cylinder, it drives valve to close, fire damage is avoided to expand.
Description
Technical field
The utility model relates to a kind of electro-hydraulic actuators, specifically drive, control the electro-hydraulic actuator of pipeline valve.
Background technique
Belong to inflammable, explosive occasion in refinery factory and petroleum filling etc., is designed with valve in the pipeline of such occasion
Door.Driving at present, the electro-hydraulic actuator for controlling pipeline valve, including rotary oil cylinder, fuel tank, hydraulic accumulator (hereinafter referred to as accumulation of energy
Device) and its oil pipe, wherein rotary oil cylinder includes two oil cylinders of A and B.When electro-hydraulic actuator driving, control pipeline valve, oil pump is given
Accumulator is oil-filled, and when accumulator reaches the pressure value of setting, oil pump stops working.If valve needs to close, electromagnetic switch
The left electromagnet electrification of valve, the high pressure oil of accumulator export the A oil cylinder port into rotary oil cylinder by solenoid directional control valve accordingly,
The oil return of B oil cylinder shifts to B oil cylinder, band moving gear from A oil cylinder by the corresponding inlet flow oil return box of solenoid directional control valve, drive rack
It rotates clockwise, driving valve is closed；If desired when valve is opened by closing, the right electromagnet electrification of solenoid directional control valve is that electromagnetism changes
It commutates to valve, outlet of the high pressure oil of accumulator after solenoid directional control valve commutates enters B oil cylinder, and the oil return of A oil cylinder is by electricity
Inlet flow oil return box after the commutation of magnetic reversal valve, drive rack shift to A oil cylinder from B oil cylinder, and band moving gear is rotated counterclockwise, driven
Valve is by closing opening；If desired for valve when a certain position is kept, solenoid directional control valve is in middle position, and solenoid directional control valve is all
Inlet and outlet is closed.The normality of the pipeline valve of above-mentioned occasion is that valve opens or closes and holding position, therefore electro-hydraulic execution
The normality of device is that solenoid directional control valve is in middle position state.If desired the normality such as closing valve for changing valve, needs electric power to make electromagnetism
Reversal valve electromagnet excitation, electro-hydraulic actuator could work.
When fire or other perils occur for above-mentioned inflammable, explosive occasion and its equipment, if can be at first
Between close valve, block medium, it will be able to avoid the expansion of fire incident, reduce loss.But fire occurs in above-mentioned occasion
When, general operation is to be initially switched off power supply, interruption of power supply, and at this moment solenoid directional control valve is in middle position state, that is, electro-hydraulic actuator and is unable to work
Make, valve can not close, and not can avoid fire damage expansion.
Summary of the invention
In order to solve the above technical problems, the purpose of the utility model is to provide one kind to prevent fire damage is widened from electro-hydraulic holding
Row device.
Purpose of the utility model is realized as follows: setting rotary oil cylinder driving valve is closed, the moving direction of rack gear
It is that rack gear from A oil cylinder shifts to B oil cylinder.The utility model includes solenoid directional control valve, accumulator and its oil pipe, fuel tank and its oil return pipe
Road, it is characterized in that: the control of one end of fusible plug pipeline (fusible plug pipeline refers to the pipeline provided with fusible plug) and hydraulic directional valve
Chamber processed connects on accumulator oil pipe, and on another oil return line for terminating at fuel tank of fusible plug pipeline, rotary oil cylinder drives valve
Hydraulic directional valve is in parallel with solenoid directional control valve when closing, i.e., the A mouth of two valves, B mouthfuls, P mouthfuls and T mouthfuls be connected together.
When there is no when fire, electric power normal power supply, fusible plug pipeline exists for above-mentioned inflammable, explosive occasion and its equipment
Blocked state is under room temperature, the high pressure oil of accumulator output enters hydraulic directional valve, and hydraulic directional valve is in middle position state, this
When the utility model maintain to work normally at normal temperature as described in 0002 section, be typically in normality, i.e., during solenoid directional control valve is in
Position state.When above-mentioned inflammable, explosive occasion and its equipment are when occurring fire, cut off the power at the first time, interruption of power supply,
Environment temperature rises to 250 DEG C or so simultaneously, and at this moment fusible plug melts, and fusible plug pipeline is open-minded, in hydraulic directional valve control chamber
High pressure oil fuel tank is flowed back to by fusible plug pipeline, i.e. high pressure oil in fusible plug pipeline control chamber is released, and is at this moment surged and is changed
Opened to valve commutation, the high pressure oil of accumulator changes by hydraulic directional valve, into A oil cylinder port, while in B oil cylinder without pressure
Oil is successively changed by its hydraulic fluid port, hydraulic directional valve, flows back to fuel tank, drive rack shifts to B oil cylinder from A oil cylinder, and gear revolves clockwise
Turn, driving valve is closed.
Compared with prior art, the good effect of the utility model is: completing to close valve in a fire at the first time
Valve is closed in operation in time, and fire damage is avoided to expand.
Detailed description of the invention
The utility model is further illustrated with reference to the accompanying drawing.
Fig. 1 is the schematic diagram of the utility model.
Specific embodiment
Setting rotary oil cylinder 1 drives valve to close, and the moving direction of rack gear is that rack gear from A oil cylinder shifts to B oil cylinder.This is practical
Novel include rotary oil cylinder, fuel tank 4 and its oil return line 41, accumulator 10 and its oil pipe 101, rotary oil cylinder includes A and B two
Oil cylinder, one end of fusible plug pipeline 3 and the control chamber 21 of hydraulic directional valve 2 connect on accumulator oil pipe 101, fusible plug pipeline
On another oil return line 41 for terminating at fuel tank, rotary oil cylinder drive valve close when hydraulic directional valve and solenoid directional control valve 9 simultaneously
Connection, i.e., the A mouth of two valves, B mouthfuls, P mouthfuls and T mouthfuls be connected together.The movement velocity of 8 adjusting actuator of one-way throttle valve, 7 be pressure
Switch, 6 be throttle valve.
When there is no when fire, electric power normal power supply, fusible plug pipeline exists for above-mentioned inflammable, explosive occasion and its equipment
Blocked state is under room temperature, the high pressure oil of accumulator output enters hydraulic directional valve, and hydraulic directional valve is in close state, this
When the utility model work normally at normal temperature, oil pump 5 to accumulator it is oil-filled, when energy storage pressure reaches the pressure value of setting
When, oil pump stops working.If valve needs to close, the left electromagnet of solenoid directional control valve 9 electrification, the high pressure oil of accumulator passes through electricity
Magnetic reversal valve exports the A oil cylinder port into rotary oil cylinder accordingly, and the oil return of B oil cylinder passes through the corresponding import of solenoid directional control valve
Fuel tank is flowed back to, drive rack 11 shifts to B oil cylinder from A oil cylinder, and band moving gear 12 rotates clockwise, and driving valve is closed；Need valve
When door is opened by closing, solenoid directional control valve commutation, outlet of the high pressure oil of accumulator after solenoid directional control valve commutates enters B oil
Cylinder, inlet flow oil return box of the oil return of A oil cylinder after solenoid directional control valve commutates, drive rack shift to A oil cylinder, band from B oil cylinder
Moving gear rotates counterclockwise, drives valve by closing opening；If desired valve closes electromagnetic switch when a certain position is kept
Valve, all inlet and outlets of solenoid directional control valve are closed.The normality of the pipeline valve of above-mentioned occasion is that valve is opened and holding position
It sets, therefore the normality of electro-hydraulic actuator is that solenoid directional control valve is in closed state.
When fire occurs for above-mentioned inflammable, explosive occasion and its equipment, cut off the power, interruption of power supply, while environment temperature
Degree rises to 250 DEG C, and at this moment fusible plug 61 melts, and fusible plug pipeline 6 is open-minded, and the high pressure oil in hydraulic directional valve control chamber passes through
Fusible plug pipeline flows back to fuel tank, i.e. high pressure oil in fusible plug pipeline control chamber is released, and at this moment hydraulic directional valve commutation is beaten
It opens, the high pressure oil of accumulator is changed by hydraulic directional valve, and into A oil cylinder port, while the apiezon oil in B oil cylinder successively passes through it
Hydraulic fluid port, hydraulic directional valve change, and flow back to fuel tank, and drive rack shifts to B oil cylinder from A oil cylinder, and gear rotates clockwise, and driving valve closes
It closes.
Claims (1)
1. one kind prevents the widened electro-hydraulic actuator of fire damage, including solenoid directional control valve, accumulator and its oil pipe, fuel tank and its
Oil return line, it is characterized in that: the control chamber of one end of fusible plug pipeline and hydraulic directional valve connects on accumulator oil pipe, it is meltable
It fills on another oil return line for terminating at fuel tank of pipeline, hydraulic directional valve and solenoid directional control valve when rotary oil cylinder drives valve to close
It is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821362625.2U CN208734961U (en) | 2018-08-23 | 2018-08-23 | Prevent the widened electro-hydraulic actuator of fire damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821362625.2U CN208734961U (en) | 2018-08-23 | 2018-08-23 | Prevent the widened electro-hydraulic actuator of fire damage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208734961U true CN208734961U (en) | 2019-04-12 |
Family
ID=66030848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821362625.2U Active CN208734961U (en) | 2018-08-23 | 2018-08-23 | Prevent the widened electro-hydraulic actuator of fire damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208734961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916441A (en) * | 2018-08-23 | 2018-11-30 | 沈阳东北电力调节技术有限公司 | Prevent the widened electro-hydraulic actuator of fire damage |
| CN114370524A (en) * | 2021-12-15 | 2022-04-19 | 西安航天动力研究所 | Fireproof emergency shutdown electro-hydraulic control system |
-
2018
- 2018-08-23 CN CN201821362625.2U patent/CN208734961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916441A (en) * | 2018-08-23 | 2018-11-30 | 沈阳东北电力调节技术有限公司 | Prevent the widened electro-hydraulic actuator of fire damage |
| WO2020037761A1 (en) * | 2018-08-23 | 2020-02-27 | 沈阳东北电力调节技术有限公司 | Electrohydraulic actuator preventing fire damage from expanding |
| CN114370524A (en) * | 2021-12-15 | 2022-04-19 | 西安航天动力研究所 | Fireproof emergency shutdown electro-hydraulic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENYANG NAISI CONTROL TECHNOLOGY CO.,LTD. Assignor: SHENYANG NORTHEAST ELECTRIC POWER CONTROL Co.,Ltd. Contract record no.: X2023210000146 Denomination of utility model: Electrohydraulic actuators to prevent the expansion of fire losses Granted publication date: 20190412 License type: Common License Record date: 20230927 |
|
| EE01 | Entry into force of recordation of patent licensing contract |