CN204226323U - The heavily loaded electrohydraulic control actuating valve door system that band compensates - Google Patents
The heavily loaded electrohydraulic control actuating valve door system that band compensates Download PDFInfo
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- CN204226323U CN204226323U CN201420699171.3U CN201420699171U CN204226323U CN 204226323 U CN204226323 U CN 204226323U CN 201420699171 U CN201420699171 U CN 201420699171U CN 204226323 U CN204226323 U CN 204226323U
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- spring
- heavily loaded
- electrohydraulic control
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Abstract
The utility model provides a kind of heavily loaded electrohydraulic control actuating valve door system with compensation, and problem to be solved is: CN101709807 restricts by spring, causes it cannot be applied to heavily loaded electrohydraulic control and drives valve system.Main points of the present utility model are: it comprises driving cylinder piston rod and is connected with the valve rod of heavily loaded valve, and it also comprises compensating cylinder and spring, and the piston rod of compensating cylinder withstands on spring, compensating cylinder and the parallel connection of driving oil cylinder.Good effect of the present utility model is: it jointly absorbs by spring and compensating cylinder, store and release energy, spring is not unique association person, solve by spring restriction problem, and then may be used on heavily loaded electrohydraulic control actuating valve door system, ensure that heavily loaded electrohydraulic control actuating valve door system reliable operation.
Description
Technical field
The utility model relates to electrohydraulic control actuating valve door system, is the system of the heavy-load type electrohydraulic control driving valve of band compensate function specifically.The said heavy-load type electrohydraulic control of the utility model refers to that the power that it drives oil cylinder to export is greater than 10 tons.
Background technique
Electrohydraulic control actuating valve door system comprises electrohydraulic control and valve, electrohydraulic control comprises driving oil cylinder and integrating electro-hydraulic actuator (see CN1865746A integrated type power source), cylinder piston rod is driven to be connected with the valve rod of valve, piston rod actuate valve stem is back and forth run, and controls the opening and closing of valve or protects position.Said system varies in size (also saying it is that it drives the large and small difference of power of oil cylinder output) according to load (valve), divides into heavy duty and underloading two kinds of electrohydraulic control actuating valve door systems.The power being driven oil cylinder to export 10 tons is in this article transition point, the power driving oil cylinder to export be greater than 10 tons for heavy electrohydraulic control actuating valve door system; The power driving oil cylinder to export be less than 10 tons for light-duty electrohydraulic control actuating valve door system.The electrohydraulic control actuating valve door system of heavy duty and underloading is in operation and all can occurs, Yin Wendu raises, and the parts of valve can expand.If do not absorb the device of these expansive forces, the part distortion such as valve and cylinder piston rod can be caused even to damage; Gap etc. is produced because of valve wear.These all can affect the reliability of said system.
For compensating above-mentioned change, CN101709807 discloses a kind of compensator of rectilinear direction, and it is by arranging spring, carrys out the change of automatic recuperation valve door and the parts such as valve rod, cylinder piston rod thereof.The spring that it uses is directly proportional to load (namely driving the power that oil cylinder exports), and load only associates with spring, and load is larger, and required spring is larger.When load is greatly to a certain extent as being applied to heavy electrohydraulic control actuating valve door system by it, its spring just there will be the difficult problems such as manufacture, cost.Therefore the application of CN101709807 is subject to the restriction of spring, generally be applicable to underloading electrohydraulic control actuating valve door system (namely its power driving oil cylinder to export is less than 10 tons), heavily loaded electrohydraulic control actuating valve door system cannot be applied to, namely cannot solve the compensation problem of heavily loaded electrohydraulic control actuating valve door system.
Summary of the invention
For solving the compensation problem of heavily loaded electrohydraulic control actuating valve door system, the purpose of this utility model is to provide a kind of heavily loaded electrohydraulic control actuating valve door system with compensation.
The purpose of this utility model is achieved in that it comprises and drives cylinder piston rod to be connected with the valve rod of heavily loaded valve, it is characterized in that: further comprising compensating cylinder and spring, the piston rod of compensating cylinder withstands on spring, compensating cylinder and driving oil cylinder parallel connection (the A chamber hydraulic fluid port docking of two oil cylinders, the B chamber hydraulic fluid port docking of two oil cylinders).
After valve is in complete shut-down or bringing onto load, if the parts Yin Wendu such as valve raise and expand, drive cylinder piston rod to be returned by synthlipsis, its piston is upwards that A chamber is moved, and drives the oil pressure in oil cylinder A chamber to raise, drive the hydraulic oil in oil cylinder A chamber will the A chamber of injecting compensating oil cylinder, the piston of compensating cylinder is pressed to its B chamber and is moved, and the piston rod of compensating cylinder stretches out, Compress Spring, absorb above-mentioned expansion by spring, avoid valve damage, valve rod and piston rods bend; When after the pressure drop in the A chamber driving oil cylinder and compensating cylinder, under the action of the spring, the piston rod of compensating cylinder is retracted, and the fluid stored interim in compensating cylinder is turned back to main system and drives in oil cylinder, to ensure the driving force of valve.
Compared with CN101709807, good effect of the present utility model is: it jointly absorbs by spring and compensating cylinder, store and release energy, spring is not unique association person.The utility model is applied on identical heavily loaded electrohydraulic control actuating valve door system, the spring used does not need as the spring of CN101709807 large, therefore the difficult problem of CN101709807 by spring restriction is it solved, and then solve the compensation problem of heavily loaded electrohydraulic control actuating valve door system, ensure that heavily loaded electrohydraulic control actuating valve door system reliable operation.
Accompanying drawing explanation
The utility model is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Heavy duty electrohydraulic control actuating valve door system comprises electrohydraulic control and heavily loaded valve 6, electrohydraulic control comprises driving oil cylinder 3 and integrating electro-hydraulic actuator 4, driving cylinder piston rod 31, bindiny mechanism 5 are connected successively with the valve rod 61 of heavily loaded valve, piston rod actuate valve stem is back and forth run, and controls the opening and closing of heavily loaded valve or protects position.
It also comprises compensating cylinder 2 and spring 1, and the piston rod 21 of compensating cylinder withstands on spring, compensating cylinder and driving oil cylinder parallel connection (the A chamber hydraulic fluid port docking of two oil cylinders, the B chamber hydraulic fluid port docking of two oil cylinders).Just can the initial pressure value P of setting compensation cylinder action by setting up spring pre-tightening force value
0, specifically, initial tension of spring=initial pressure value × compensating cylinder piston area, wherein initial pressure value=driving oil cylinder nominal output value/driving oil cylinder piston area.
After heavily loaded valve is in complete shut-down or bringing onto load, if valve, valve rod, driving cylinder piston rod are subject to temperature, rising expands, drive oil cylinder piston just to have the trend moved up, drive the oil pressure in oil cylinder A chamber will raise, when pressure exceedes the initial set pressure P of compensating cylinder
0cylinder piston rod is driven to be returned by synthlipsis, its piston upwards namely A chamber move, drive the oil pressure in oil cylinder A chamber to raise, drive the hydraulic oil in oil cylinder A chamber will the A chamber of injecting compensating oil cylinder, the piston of compensating cylinder is pressed to its B chamber and is moved, the piston rod of compensating cylinder stretches out, Compress Spring, absorbs this expansion by spring, avoid valve rod and piston rods bend, this process drives the trend of oil cylinder piston up movement all to disappear by continuing to always; When after the pressure drop in the A chamber driving oil cylinder and compensating cylinder, under the action of the spring, the piston rod of compensating cylinder is retracted, and the fluid stored interim in compensating cylinder is turned back to main system and drives in oil cylinder, to ensure the driving force of valve.
Claims (2)
1. the heavily loaded electrohydraulic control actuating valve door system with compensation, it comprises driving cylinder piston rod and is connected with the valve rod of heavily loaded valve, it is characterized in that: further comprising compensating cylinder and spring, the piston rod of compensating cylinder withstands on spring, compensating cylinder and the parallel connection of driving oil cylinder.
2. according to the heavily loaded electrohydraulic control actuating valve door system that band according to claim 1 compensates, it is characterized in that: said spring, its pretightening force=initial pressure value × compensating cylinder piston area, wherein initial pressure value=driving oil cylinder nominal output value/driving oil cylinder piston area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699171.3U CN204226323U (en) | 2014-11-20 | 2014-11-20 | The heavily loaded electrohydraulic control actuating valve door system that band compensates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699171.3U CN204226323U (en) | 2014-11-20 | 2014-11-20 | The heavily loaded electrohydraulic control actuating valve door system that band compensates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226323U true CN204226323U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420699171.3U Active CN204226323U (en) | 2014-11-20 | 2014-11-20 | The heavily loaded electrohydraulic control actuating valve door system that band compensates |
Country Status (1)
| Country | Link |
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| CN (1) | CN204226323U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405711A (en) * | 2014-11-20 | 2015-03-11 | 沈阳东北电力调节技术有限公司 | Overload electrohydraulic executing mechanism drive valve system with compensation function |
| CN110185662A (en) * | 2019-05-29 | 2019-08-30 | 太原科技大学 | A kind of self weight compensation hydraulic test bench hydraulic control system |
-
2014
- 2014-11-20 CN CN201420699171.3U patent/CN204226323U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405711A (en) * | 2014-11-20 | 2015-03-11 | 沈阳东北电力调节技术有限公司 | Overload electrohydraulic executing mechanism drive valve system with compensation function |
| CN104405711B (en) * | 2014-11-20 | 2016-08-24 | 沈阳东北电力调节技术有限公司 | The heavily loaded electrohydraulic actuator that band compensates drives valve system |
| CN110185662A (en) * | 2019-05-29 | 2019-08-30 | 太原科技大学 | A kind of self weight compensation hydraulic test bench hydraulic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: A Valve System Driven by Heavy Duty Electrohydraulic actuators with Compensation Granted publication date: 20150325 License type: Common License Record date: 20230927 |
|
| EE01 | Entry into force of recordation of patent licensing contract |