CN201858416U - Buffering and automatic compensation connecting structure for electric actuator and valve - Google Patents
Buffering and automatic compensation connecting structure for electric actuator and valve Download PDFInfo
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- CN201858416U CN201858416U CN 201020611664 CN201020611664U CN201858416U CN 201858416 U CN201858416 U CN 201858416U CN 201020611664 CN201020611664 CN 201020611664 CN 201020611664 U CN201020611664 U CN 201020611664U CN 201858416 U CN201858416 U CN 201858416U
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- valve
- electric actuator
- elastic ring
- buffering
- valve rod
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Abstract
The utility model relates to the technical field of fluid control, in particular to a buffering and automatic compensation connecting structure for an electric actuator and a valve. When applied to thrust electric actuators, the connecting structure comprises an electric actuator with a valve stem nut, a valve connecting disc, a valve spool, a valve stem and an elastic ring, wherein the electric actuator is connected with the valve through the valve connecting disc, the valve stem nut and the valve stem are connected via trapezoidal threads, the valve stem is connected with the valve spool, and the elastic ring is mounted between the valve stem and the valve spool. When the electric actuator switches off the valve, the added elastic ring with better elastic deformation performance can function in buffering and energy storage, and thereby the connecting structure has the advantages of increasing switching-off performance of the valve and prolonging service life.
Description
Technical field
The utility model relates to the fluid control technology field, particularly a kind of electric actuator and valve buffering and automatic compensation linkage structure.
Background technique
At present, two kinds of revolution push type electric actuator and many rotational torque type electric actuator more than electric actuator is divided into as shown in Figure 1, are that first kind of prior art turned round push type electric actuator and valve Placement schematic representation more.Among the figure: 1 ' is that valve land, 2 ' is that valve rod, 3 ' is that Stem Mut, 4 ' is electric actuator.Have Stem Mut 3 ' on the electric actuator 4 ', electric actuator 4 ' and valve land 1 ' link to each other by bolt, and Stem Mut 3 ' is connected by trapezoidal thread with valve rod 2 '.When electric actuator 4 ' drove Stem Mut 3 ' rotation, Stem Mut 3 ' passed to valve rod 2 ' by trapezoidal thread with thrust, and valve rod 2 ' passes to the sealing surface of valve with thrust, thereby plays the effect of sealing.
As shown in Figure 2, be second kind of many rotational torque of prior art type electric actuator and valve Placement schematic representation.Among the figure: 5 ' is the valve land; 6 ' is valve rod; 7 ' is Stem Mut; 8 ' is electric actuator.Valve land 5 ' links to each other with electric actuator 8 ' by bolt, and electric actuator 8 ' passes to Stem Mut 7 ' by the form of three-jaw or key with moment of torsion, and Stem Mut 7 ' is to be connected by trapezoidal thread with valve rod 6 '.When electric actuator 8 ' is rotated, torque is passed to Stem Mut 7 ' by three-jaw or key, thereby drive the rotation of Stem Mut 7 ', when Stem Mut 7 ' rotates, with moment of torsion by with trapezoidal connection of valve rod 6 ' pass to valve rod 6 ', valve rod 6 ' is produced move up and down, make valve core sealed cover directly contact sealing surface of seat.
All there are following shortcoming in above-mentioned two kinds of dissimilar electric actuator and valve linkage structure:
(1) when valve closing, the power of closing of electric actuator acts directly on the valve rod, be directly passed on the valve core sealed cover by valve rod, there is not any buffer function, cause valve sealing face directly to be clashed into,, be easy to crack after being clashed into because the sealing surface hardness of valve is very high, even cause coming off, the sealability and the life-span of valve are caused very big collapsing force.
(2) in the valve debug process, for the safer operation of valve, generally electric actuator is set to stroke limit, force moment protection.But such structure and be provided with and produce a problem: after valve uses a period of time, because wearing and tearing, the wearing and tearing of Stem Mut, the distortion of sealing surface and the distortion of other links of valve of electric actuator inner driving medium can cause the feedback signal of electric actuator to produce certain skew.For example: the stroke that is provided with when valve dispatches from the factory is 40mm, electric actuator is rotated 30 circles, after valve uses a period of time, owing to above-mentioned reason, electronic stroke can become 40.5mm, Denso need rotate 30.1 circles, but when factory setting, Denso rotates 30 circle backs and just no longer rotates, thereby the sealing surface that causes valve does not have the enough power of closing or two sealing surfaces break away from, make valve leak, finally cause the valve sealing face erosion, greatly reduced the working life of valve.
Summary of the invention
(1) technical problem that will solve
The technical problems to be solved in the utility model provides a kind of electric actuator and valve buffering and compensates linkage structure automatically, prevent electric actuator direct bump sealing surface when throttle down, cause valve close performance and working life lower situation.
(2) technological scheme
In order to address the above problem, the utility model provides a kind of electric actuator and valve buffering and compensates linkage structure automatically, comprises electric actuator 6, valve land 7, spool 1 and valve rod 5 with Stem Mut 8, also comprises elastic ring 2,
Stem Mut 8 and valve rod 5 are connected by trapezoidal thread;
Valve rod 5 links to each other with spool 1;
Between valve rod 5 and the spool 1 elastic ring 2 is housed.
Further, electric actuator and valve buffering and automatically the compensation linkage structure also comprise gland nut 4, spool 1 and gland nut 4 are by being threaded, gland nut 4 is pressed on the boss of valve rod 5.
Further, be provided with pad 3 between valve rod 5 and the elastic ring 2, the end of valve rod 5 is pressed on the pad 3, and pad 3 is pressed on the elastic ring 2.
Further, the quantity of elastic ring 2 is one or more.
On the other hand, the utility model also provides a kind of electric actuator and valve buffering and compensates linkage structure automatically, comprise electric actuator 6, Stem Mut 8, valve land 7 and valve rod 5, also comprise elastic ring 2, electric actuator 6 is connected with valve 5 by valve land 7;
Stem Mut 8 and valve rod 5 are connected by trapezoidal thread;
Further, electric actuator 6 is connected with valve by valve land 7 and comprises: electric actuator 6 links to each other with valve land 7 by bolt, and valve land 7 is connected with valve by bolt.
Further, the quantity of elastic ring 2 is one or more.
(3) beneficial effect
Electric actuator that the utility model provides and valve buffering and automatic compensation linkage structure, in the process of electric actuator at throttle down, because the elastic ring that adds has elastic strain performance preferably, can play the effect of buffering and stored energy, have the advantage of closing performance and working life that improves valve.
Description of drawings
Fig. 1 is that first kind of prior art turned round push type electric actuator and valve Placement schematic representation more;
Fig. 2 is second kind of many rotational torque of prior art type electric actuator and valve Placement schematic representation;
Fig. 3 is the utility model embodiment 1 push type electric actuator and valve buffering and compensation connection set schematic representation;
Fig. 4 is that the utility model embodiment 1 changes push type electric actuator and valve buffering and compensation connection set partial schematic diagram;
Fig. 5 is the utility model embodiment 2 torque type electric actuator and valve buffering and compensation connection set schematic representation.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
With reference to figure 3,4, the electric actuator in the present embodiment is the push type electric actuator.This this electric actuator and valve buffering and automatic compensation connection set are applied on the push type electric actuator, and this connection set comprises: the electric actuator 6, valve land 7, spool 1, gland nut 4 and the valve rod 5 that self have Stem Mut 8; Electric actuator 6 and valve land 7 link to each other by bolt, and electric actuator 6 is connected with valve by valve land 7.Stem Mut 8 and valve rod 5 are connected by trapezoidal thread; Spool 1 and gland nut 4 be by being threaded, and gland nut 4 is pressed on the boss on the valve rod 5, thereby prevents that spool 1 breaks away from valve rod 5.
Between valve rod 5 and spool 1, elastic ring 2 is installed also, in the present embodiment, the quantity of elastic ring 2 comprises one or more, and the compound mode that the specification of elastic ring 2, quantity and a plurality of elastic ring are 2 depends on the size of electric actuator 6 and the ability of closing of valve.
In this buffering connection set, also comprise pad 3 between valve rod 5 and the elastic ring 2, the end of valve rod 5 is pressed on this pad 3, and pad 3 is pressed on the elastic ring 2, thereby elastic ring 2 is fixing.
When electric actuator 6 is carried out throttle down, electric actuator 6 drives Stem Mut 8 and rotates, Stem Mut 8 with thrust pass to its valve rod 5 that is connected by trapezoidal thread on, the valve rod 5 that is subjected to thrust earlier with thrust on elastic ring 2, after elastic ring 2 compresses buffering, thrust is delivered on the spool 1 again, make contacting of valve rod 5 and valve sealing face become the buffering contact, avoid the consequence of valve rod 5 direct severe impact valve sealing faces, thereby played the effect of protection valve sealing face; Simultaneously in the process of compression buffering takes place elastic ring 2, also stored lot of energy,, and then prolonged the working life of valve for the sealing surface that produces owing to the wearing and tearing or the distortion of parts is closed the power deficiency or the sealing surface break-off provides compensation in the future.
With reference to figure 5, the electric actuator in the present embodiment is the torque type electric actuator.This electric actuator and valve buffering and automatic compensation connection set are applied on the torque type electric actuator.This connection set comprises: electric actuator 6, Stem Mut 8, valve land 7, valve rod 5 and elastic ring 2, electric actuator 6 and valve land 7 link to each other by bolt, and valve land 7 links to each other with the column of valve by bolt.Electric actuator 6 passes to Stem Mut 8 by three-jaw or key with moment of torsion, and Stem Mut 8 and valve rod 5 are connected by trapezoidal thread.
When electric actuator 6 is carried out throttle down, electric actuator 6 passes to Stem Mut 8 with torque by three-jaw or key, thereby drives the rotation of Stem Mut 8, when Stem Mut 8 rotates, with moment of torsion pass to its by the trapezoidal valve rod that is connected 5, make valve rod 5 produce mechanical motion up and down.When valve rod 5 moves downward; impel the contact of valve two sealing surfaces; after valve sealing face is subjected to the active force of valve rod 5; pass through interaction force; valve sealing face can pass to the reaction force that valve rod 5 makes progress; valve rod 5 is subjected to behind the reaction force Stem Mut 8 being moved upward; because elastic ring 2 is equipped with in Stem Mut 8 tops; the slow pressure elasticity ring 2 of Stem Mut 8 meetings; along with elastic ring 2 elasticity increase gradually; valve sealing face passes to the reaction force of valve rod 5 also along with increase, and elastic ring 2 has played the effect that valve rod 5 contacts with the sealing surface buffering, thereby has played the effect of protection valve sealing face.Simultaneously in the process of compression buffering takes place elastic ring 2, also stored lot of energy,, and then prolonged the working life of valve for the sealing surface that produces owing to the wearing and tearing or the distortion of parts is closed the power deficiency or the sealing surface break-off provides compensation in the future.
Electric actuator that the utility model provides and valve buffering and automatic compensation linkage structure in the process of electric actuator at throttle down, can play the effect of buffering and stored energy, thereby improve closing performance and working life of valve.
Above mode of execution only is used to illustrate the utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make various variations and modification; therefore all technological schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present utility model should be defined by the claims.
Claims (7)
1. electric actuator and valve buffering and compensation linkage structure automatically comprise it is characterized in that have Stem Mut electric actuator (6), valve land (7), spool (1) and the valve rod (5) of (8), also comprise elastic ring (2),
Described electric actuator (6) is connected with valve by valve land (7);
Described Stem Mut (8) is connected by trapezoidal thread with described valve rod (5);
Described valve rod (5) links to each other with described spool (1);
Between described valve rod (5) and the described spool (1) elastic ring (2) is housed.
2. electric actuator as claimed in claim 1 and valve buffering and automatic compensation linkage structure is characterized in that, also comprise gland nut (4),
Described spool (1) and gland nut (4) are by being threaded, and described gland nut (4) is pressed on the boss of described valve rod (5).
3. electric actuator as claimed in claim 1 and valve buffering and automatic compensation linkage structure, it is characterized in that, be provided with pad (3) between described valve rod (5) and the elastic ring (2), the end of described valve rod (5) is pressed on the described pad (3), and described pad (3) is pressed on the described elastic ring (2).
4. electric actuator described in claim 1 or 3 and valve buffering and compensation linkage structure automatically is characterized in that the quantity of described elastic ring (2) is one or more.
5. electric actuator and valve buffering and compensation linkage structure automatically comprise electric actuator (6), Stem Mut (8), valve land (7) and valve rod (5), it is characterized in that, also comprise elastic ring (2),
Described electric actuator (6) is connected with valve by valve land (7);
Described electric actuator (6) passes to Stem Mut (8) by three-jaw or key with moment of torsion;
Described Stem Mut (8) is connected by trapezoidal thread with valve rod (5);
Elastic ring (2) is housed in the described valve land (7), and described elastic ring (2) is positioned at described Stem Mut (8) top and is in the below of described electric actuator (6).
6. electric actuator as claimed in claim 5 and valve buffering and automatic compensation linkage structure is characterized in that described electric actuator (6) links to each other with valve land (7) by bolt, and described valve land (7) is connected with valve by bolt.
7. electric actuator as claimed in claim 5 and valve buffering and automatic compensation linkage structure is characterized in that the quantity of described elastic ring (2) is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020611664 CN201858416U (en) | 2010-11-16 | 2010-11-16 | Buffering and automatic compensation connecting structure for electric actuator and valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020611664 CN201858416U (en) | 2010-11-16 | 2010-11-16 | Buffering and automatic compensation connecting structure for electric actuator and valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858416U true CN201858416U (en) | 2011-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020611664 Expired - Fee Related CN201858416U (en) | 2010-11-16 | 2010-11-16 | Buffering and automatic compensation connecting structure for electric actuator and valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775662A (en) * | 2012-10-22 | 2014-05-07 | 费希尔久安输配设备(成都)有限公司 | Valve rod and valve plug assembly and valve with same |
-
2010
- 2010-11-16 CN CN 201020611664 patent/CN201858416U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775662A (en) * | 2012-10-22 | 2014-05-07 | 费希尔久安输配设备(成都)有限公司 | Valve rod and valve plug assembly and valve with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 215000 Suzhou Lake Industrial Park, Xiangcheng District Economic Development Zone, Jiangsu Patentee after: SUZHOU DELAN ENERGY SCIENCE & TECHNOLOGY CORP., LTD. Address before: 215000, Xiangcheng District Xiangcheng Economic Development Zone, Jiangsu province Suzhou Lake Industrial Park Patentee before: Suzhou Delan Energy Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |