CN221424065U - Valve position feedback following device of regulating valve - Google Patents
Valve position feedback following device of regulating valve Download PDFInfo
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- CN221424065U CN221424065U CN202323417667.5U CN202323417667U CN221424065U CN 221424065 U CN221424065 U CN 221424065U CN 202323417667 U CN202323417667 U CN 202323417667U CN 221424065 U CN221424065 U CN 221424065U
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- rod
- position feedback
- long groove
- groove plate
- valve
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a valve position feedback following device of an adjusting valve, which at least comprises a following rod, a moving part and a long groove plate; the movable piece is provided with a U-shaped opening, one end of the follow-up rod passes through the U-shaped opening, and the other end of the follow-up rod passes through the groove part of the long groove plate; the opening end of the U-shaped opening of the moving piece is used for being connected with the valve rod; one end of the long groove plate, which is far away from the follow-up rod, is used for being connected with a positioner; the opening of the regulating valve is changed to enable the valve rod to move up/down, the follower rod is driven by the moving piece to drive the long groove plate to move synchronously, and then angular displacement is generated between the long groove plate and the positioner; the opening degree of the regulating valve is fed back by converting the angular displacement into an opening degree signal of the regulating valve.
Description
Technical Field
The utility model relates to the technical field of regulating valves, in particular to a valve position feedback following device of a regulating valve.
Background
The regulating valve is commonly used for regulating the medium flow in a pipeline and can be divided into an electric regulating valve, a pneumatic regulating valve and a self-operated regulating valve according to different valve control executing devices. The main structure of the regulating valve consists of a valve body and an actuating mechanism, wherein the valve body is in contact with a medium, and the flow of the medium flowing through the pipeline is regulated by regulating the flow area between the valve core and the valve seat.
The valve actuating mechanism mainly comprises a valve rod driver and a valve positioner, and the controller outputs a signal by comparing the difference value of an input signal and a feedback signal value, the driver drives the valve rod to act, and the displacement of the valve rod is regulated, so that a closed-loop control system is formed.
After the valve rod of the regulating valve moves in place, the position information of the valve rod needs to be fed back to the valve positioner, and the valve positioner feeds back the opening information of the regulating valve to the control system.
Therefore, it is desirable to design a valve position feedback follower device capable of accurately feeding back valve opening information.
Disclosure of utility model
Aiming at the technical problems in the related art, the utility model provides a valve position feedback following device of an adjusting valve, and the position information of a valve rod can be fed back to a valve positioner through the valve position feedback following device.
The utility model provides a valve position feedback following device of an adjusting valve, which at least comprises a following rod, a moving part and a long groove plate; the movable piece is provided with a U-shaped opening, one end of the follow-up rod passes through the U-shaped opening, and the other end of the follow-up rod passes through the groove part of the long groove plate; the opening end of the U-shaped opening of the moving piece is used for being connected with the valve rod; one end of the long groove plate, which is far away from the follow-up rod, is used for being connected with a positioner; the opening of the regulating valve is changed to enable the valve rod to move up/down, the follower rod is driven by the moving piece to drive the long groove plate to move synchronously, and then angular displacement is generated between the long groove plate and the positioner; the opening degree of the regulating valve is fed back by converting the angular displacement into an opening degree signal of the regulating valve.
In one embodiment, the follower rod is a threaded rod with a circular end cap at one end; the circular end cap is used for limiting the moving piece from axially falling out along the threaded rod; the threaded end of the threaded rod passes through the groove part of the long groove plate and then is in threaded connection with a fastener, and the long groove plate is limited to axially deviate from along the threaded rod through the fastener.
In one embodiment, the valve position feedback device of the regulating valve further comprises a limiting piece; the limiting piece is sleeved on the threaded rod, one end of the limiting piece is abutted with the long groove plate, and the other end of the limiting piece is matched with the round end cap; the moving member is constrained within a gap between the limiting member and the circular end cap.
In one embodiment, the limiting piece comprises a top sliding block and a spring which are sequentially sleeved on the threaded rod; the top end sliding block is sleeved on the threaded rod and then matched with the round end cap to form an assembly gap, and the moving piece is limited in the assembly gap; the spring is compressively disposed between the top slider and the elongated slot plate.
In one embodiment, one end of the top sliding block, which is close to the spring, is a plane, and the other end of the top sliding block is a conical surface.
In one embodiment, the U-shaped opening of the moving member is smaller than the diameter of the circular end cap.
In one embodiment, the fastener is a fastening nut.
In one embodiment, the slot opening of the long slotted plate is smaller than the outer diameter of the fastening nut.
In one embodiment, the moving member is a U-shaped stationary ring.
In one embodiment, the elongated slot plate is a strip plate with an elliptical slot in the center.
The valve position feedback following device of the regulating valve at least comprises the following beneficial effects:
1. The valve position feedback following device of the regulating valve solves the problem that the following rod is separated from the valve position moving part to cause error of a feedback signal of the regulating valve, and improves the reliability of the valve position signal feedback device.
2. According to the valve position feedback following device of the regulating valve, disclosed by the embodiment of the utility model, the problem that the follow-up rod is separated from the U-shaped groove of the moving part in a vibration environment of the regulating valve can be effectively prevented by adding the limiting device, so that the working reliability of the regulating valve is improved.
Those skilled in the art will recognize additional features and advantages upon reading the detailed description, and upon viewing the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall block diagram of a regulator valve position feedback follower in accordance with an embodiment of the present utility model.
FIG. 2 is a layout of a regulator valve position feedback follower according to an embodiment of the present utility model.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings. Spatially relative terms such as "under", "below", "under …", "low", "above", "on …", "high" and the like are used for convenience of description to explain the positioning of one element relative to a second element and to represent different orientations of the device in addition to those shown in the figures. In addition, for example, "one element above/below another element" may mean that two elements are in direct contact, or that other elements are present between the two elements. Furthermore, terms such as "first," "second," and the like, are also used to describe various elements, regions, sections, etc., and should not be taken as limiting. Like terms refer to like elements throughout the description.
Referring to fig. 1, the utility model provides a valve position feedback following device of an adjusting valve, which at least comprises a following rod 1, a moving piece 2 and an elongated slot plate 3. The moving member 2 is provided with a U-shaped opening, one end of the follower rod 1 is arranged through the U-shaped opening of the moving member 2, and the other end of the follower rod 1 is arranged through the groove part of the long groove plate 3. Wherein the U-shaped open end 21 of the displacement member 2 is adapted to be connected to a valve stem (the valve stem is not shown in the figures) and the displacement member 2 is adapted to be moved synchronously with the valve stem. The end of the long groove plate 3 remote from the follower rod 1 is used for connection with a positioner (the positioner is not marked in the figure), through which an angle signal of the long groove plate 3 can be obtained and converted into an opening feedback signal of the regulating valve.
Specifically, when the valve positioner receives an opening input signal of the regulating valve, the cylinder pressure of the regulating valve is regulated, the valve rod of the regulating valve is controlled to move up/down after the cylinder pressure is changed, the moving part moves up/down along with the valve rod, and meanwhile, the follow-up rod drives one end of the long groove plate, which is far away from the positioner, to move synchronously, so that angular displacement is generated between the long groove plate and the positioner. According to the valve position feedback following device of the regulating valve, the angular displacement is converted into the opening signal of the regulating valve, so that the opening of the regulating valve is fed back.
It should be noted that, the purpose of the arrangement of one end of the follower rod 1 passing through the U-shaped opening of the moving member 2 is to drive the follower rod 1 to move synchronously during the up/down movement of the moving member 2. Similarly, the other end of the follower rod 1 is fixedly arranged through the groove part of the long groove plate 3, so that the follower rod 1 can drive one end of the long groove plate far away from the positioner to synchronously move when being driven by the moving part 2 to move up/down.
In one embodiment, the follower rod 1 is a threaded rod provided with a circular end cap 11 at one end. The circular end cap 11 serves to limit the removal of the moving member 2 along one axial side of the threaded rod. The threaded end 12 of the threaded rod passes through the groove part of the long groove plate 3 and is in threaded connection with the fastener 4, and the long groove plate is limited to be pulled out along the other axial side of the threaded rod through the fastener 4.
In the above embodiment, the U-shaped opening of the moving member 2 is smaller than the diameter of the circular end cap 11.
The valve position feedback following device of the regulating valve can be suitable for a vibration environment, and the follow-up rod is prevented from being separated from the moving part when the vibration energy of the regulating valve is large.
In one embodiment, to prevent the movable member from possibly sliding along the follower shaft during vibration of the regulator valve, the valve position feedback follower of the regulator valve of the present embodiment is provided with a stopper 5 at the periphery of the threaded end 12. The limiting piece 5 is sleeved on the threaded rod, one end of the limiting piece is abutted against the long groove plate 3, and the other end of the limiting piece is matched with the round end cap 11 to form a gap. The displacement member 2 is confined in the gap between the stopper 5 and the circular end cap 11.
According to the valve position feedback following device of the regulating valve, the round end cap 11 of the threaded rod is fixed on one side of the U-shaped groove of the moving piece 2, and an assembly gap is reserved between the round end cap 11 and the moving piece 2. In order to prevent the displacement of the displacement member 2 relative to the circular end cap 11 in a vibrating environment, a stop member is therefore pressed against the other side of the U-shaped groove of the displacement member 2.
Wherein, the limiting piece 5 has elasticity, and the moving piece 2 is pressed on the inner side of the round end cap 11 under the action of the elastic force of the limiting piece 5.
In the above embodiment, the limiting member 5 includes the top slider 51 and the spring 52 which are sequentially sleeved on the threaded end 12 of the threaded rod. The top slider 51 is fitted over the threaded end 12 of the threaded rod and engages with the circular end cap 11 to form an assembly gap in which the moving member 2 is restrained. The spring 52 is compressively disposed between the tip slider 51 and the long groove plate 3. After the long groove plate 3 and the fastener 4 are installed in place, the long groove plate 3 is pressed on the surface of the fastener 4 under the action of the elastic force of the spring 52, and the top end sliding block 51 presses the U-shaped groove assembly of the moving piece 2 on the round end cap 11.
Wherein, the end of the top sliding block 51, which is axially close to the spring 52, is a plane, the other end is a conical surface, and the axial center position is also provided with a center hole for passing through the threaded end 12 of the threaded rod. One side of the conical surface is assembled with the U-shaped groove of the moving part 2, and one side of the plane is matched and pressed with the end face of the spring 52. One end of the spring 52 far away from the top end sliding block 51 is attached to the long groove plate 6, and under the elastic force of the spring 52, the top end sliding block 51 is assembled and pressed with the U-shaped groove of the moving piece 2.
In any of the above embodiments, the fastener 4 is a fastening nut.
Further, in order to prevent the groove portion of the long groove plate 3 from coming out of the fastening nut 4, the notch opening of the long groove plate 3 may be made smaller than the outer diameter of the fastening nut 4.
In one embodiment, the moving member 2 is a U-shaped fixed ring, and an open end of the U-shaped fixed ring is connected to a valve stem (not shown).
In one embodiment the long channel plate 3 is a strip with an oval channel in the centre, the end of the strip remote from the threaded rod being used for a locator (not shown) connection.
The above-described embodiments of the present utility model can be combined with each other with corresponding technical effects.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The valve position feedback following device of the regulating valve is characterized by at least comprising a follow-up rod, a moving piece and a long groove plate; the movable piece is provided with a U-shaped opening, one end of the follow-up rod passes through the U-shaped opening, and the other end of the follow-up rod passes through the groove part of the long groove plate;
The opening end of the U-shaped opening of the moving piece is used for being connected with the valve rod; one end of the long groove plate, which is far away from the follow-up rod, is used for being connected with a positioner;
The opening of the regulating valve is changed to enable the valve rod to move up/down, the follower rod is driven by the moving piece to drive the long groove plate to move synchronously, and then angular displacement is generated between the long groove plate and the positioner; the opening degree of the regulating valve is fed back by converting the angular displacement into an opening degree signal of the regulating valve.
2. The regulator valve position feedback follower of claim 1, wherein the follower rod is a threaded rod having a circular end cap at one end; the circular end cap is used for limiting the moving piece from axially falling out along the threaded rod; the threaded end of the threaded rod passes through the groove part of the long groove plate and then is in threaded connection with a fastener, and the long groove plate is limited to axially deviate from along the threaded rod through the fastener.
3. The regulator valve position feedback follower of claim 2, further comprising a stop; the limiting piece is sleeved on the threaded rod, one end of the limiting piece is abutted with the long groove plate, and the other end of the limiting piece is matched with the round end cap; the moving member is constrained within a gap between the limiting member and the circular end cap.
4. The adjusting valve position feedback follower of claim 3, wherein the limiting member comprises a top slider and a spring which are sequentially sleeved on the threaded rod; the top end sliding block is sleeved on the threaded rod and then matched with the round end cap to form an assembly gap, and the moving piece is limited in the assembly gap; the spring is compressively disposed between the top slider and the elongated slot plate.
5. The regulator valve position feedback follower of claim 4, wherein one end of the top slider adjacent to the spring is planar and the other end is tapered.
6. A regulator valve position feedback follower as defined in any one of claims 2-5, wherein the U-shaped opening of the moveable member is smaller than the diameter of the circular end cap.
7. The regulator valve position feedback follower of claim 6, wherein the fastener is a fastening nut.
8. The regulator valve position feedback follower of claim 7, wherein the slot opening of the slotted plate is less than the outer diameter of the fastening nut.
9. The regulator valve position feedback follower of claim 1, wherein the moveable member is a U-shaped stationary ring.
10. The regulator valve position feedback follower of claim 1, wherein the elongated slotted plate is a slotted plate having an oblong slot in the center thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323417667.5U CN221424065U (en) | 2023-12-15 | 2023-12-15 | Valve position feedback following device of regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323417667.5U CN221424065U (en) | 2023-12-15 | 2023-12-15 | Valve position feedback following device of regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221424065U true CN221424065U (en) | 2024-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323417667.5U Active CN221424065U (en) | 2023-12-15 | 2023-12-15 | Valve position feedback following device of regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221424065U (en) |
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2023
- 2023-12-15 CN CN202323417667.5U patent/CN221424065U/en active Active
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