CN213778970U - Angular displacement measurement feedback piece of angular travel valve - Google Patents
Angular displacement measurement feedback piece of angular travel valve Download PDFInfo
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- CN213778970U CN213778970U CN202023151482.0U CN202023151482U CN213778970U CN 213778970 U CN213778970 U CN 213778970U CN 202023151482 U CN202023151482 U CN 202023151482U CN 213778970 U CN213778970 U CN 213778970U
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Abstract
The utility model discloses an angular displacement measurement feedback part of an angular travel valve, which comprises a feedback plate I and a feedback plate II; the feedback plate I is a semi-cylinder, a triangular groove is formed in the semi-cylinder, a cuboid boss is machined on one side of the semi-cylinder, annular grooves are formed in the semi-cylinder and the cuboid boss, and a threaded through hole is formed in the cuboid boss; the feedback plate II is a cuboid; the feedback plate I is connected with the feedback plate II and fixes the valve rod in a triangular groove of the feedback plate I, and a pull wire is installed in a cuboid boss. The utility model discloses the shape to the spread groove of current stay-supported feedback piece is improved, makes the feedback piece of same size, and is applicable in the valve rod diameter of wideer scope, has improved the fixed mode and the fixed direction of acting as go-between simultaneously, and the annular groove of acting as go-between and feedback plate I pastes well all the time, makes the angle displacement starting point detect more accurately.
Description
Technical Field
The utility model relates to an angular travel valve angular displacement measurement feedback piece.
Background
In recent years, artificial intelligence and big data have slowly permeated into various industries, so that the requirement on the control field is higher, and the valve serving as a valve for controlling key parts is required to be reflected quickly and controlled accurately. The accurate control premise is that the actual displacement and the opening degree of the valve can be accurately detected, and when the angular displacement of the valve rod of the angular travel valve is detected, the valve rod and the displacement sensor need to be connected by means of a feedback piece.
At present, a magnetic strip type feedback piece and a stay wire type angular travel feedback plate are commonly used, the magnetic strip has a certain effective range, and the short magnetic strip can cause poor feedback linearity; the pull-wire type angular travel feedback plate connects the valve rod with the pull-wire sensor, so as to realize the detection of the rotary angular displacement of the valve rod. The existing angular travel feedback plate uses a circular cutting groove with the same shape and size as the valve rod, and the circular cutting groove is matched and fixed with the outer surface of the valve rod, so that one valve rod needs to be in a size corresponding to the angular travel feedback plate, and the number of parts is too large. In addition, the existing fixing mode of the stay wire and the feedback plate causes the initial point of angular displacement to be inaccurate, and the angular displacement detection and feedback to be inaccurate, so that the valve operation data acquired by the control system is influenced.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides an angular travel valve angular displacement measurement feedback piece, applicable in the valve rod diameter of wideer scope, it is more accurate to make angular displacement measurement starting point position simultaneously.
In order to achieve the purpose, the angular displacement measurement feedback piece of the angular travel valve comprises a feedback plate I and a feedback plate II;
the feedback plate I is a semi-cylinder, a triangular groove is formed in the semi-cylinder, a cuboid boss is machined on one side of the semi-cylinder, annular grooves are formed in the semi-cylinder and the cuboid boss, and a threaded through hole is formed in the cuboid boss;
the feedback plate II is a cuboid;
the feedback plate I is connected with the feedback plate II and fixes the valve rod in a triangular groove of the feedback plate I, and a pull wire is installed in a cuboid boss.
As an improvement, two threaded blind holes are processed on rectangular surfaces on two sides of the axis of the feedback plate I, two through holes matched with the threaded blind holes are formed in the feedback plate II, and the feedback plate I is connected with the feedback plate II through screws.
As an improvement, the triangular groove is an isosceles right triangle.
As an improvement, an annular groove I is processed on the outer side of the semi-cylinder body, an annular groove II with the same radius as the annular groove I is processed on the cuboid boss, and the annular groove I and the annular groove II form an annular groove located on the same excircle.
As an improvement, the threaded through hole is perpendicular to the second annular groove.
As the improvement, install two screws in the screw through-hole, the acting as go-between is fixed through two screw clamps fastening.
The utility model discloses the shape to the spread groove of current stay-supported feedback piece is improved, makes the feedback piece of same size, and is applicable in the valve rod diameter of wideer scope, has improved the fixed mode and the fixed direction of acting as go-between simultaneously, and the annular groove of acting as go-between and feedback plate I pastes well all the time, makes the angle displacement starting point detect more accurately.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structure of a feedback plate I of the present invention;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a bottom view of FIG. 2;
FIG. 5 is a schematic structural diagram of a middle feedback plate II of the present invention;
FIG. 6 is a view taken along line A-A of FIG. 5;
FIG. 7 is a schematic view of the present invention used with a small diameter valve stem;
FIG. 8 is a schematic view of the present invention used with a large diameter valve stem;
fig. 9 is a schematic view of the valve stem angular displacement detection for an angular travel valve of the present invention;
fig. 10 is a schematic view illustrating the principle of angular displacement detection of the valve stem of the angular travel valve according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, 2, 3, 4, 5 and 6, an angular displacement measuring feedback member of an angular travel valve comprises a feedback plate I5 and a feedback plate II 1;
the feedback plate I5 is a semi-cylinder 51 with a groove and a threaded hole, a triangular groove 56 is dug on the rectangular surface of the semi-cylinder 51 through the axis of the cylinder, two threaded blind holes 55 are processed on the rectangular surface on two sides of the axis of the semi-cylinder 51, preferably, the two threaded blind holes 55 are symmetrically arranged, a rectangular boss 53 is processed on any one side of two sides of the axis, an annular groove I is processed on the outer side of the semi-cylinder 51, an annular groove II with the same radius size is processed on the rectangular boss 53, namely, the annular groove I and the annular groove II on the rectangular boss 53 are positioned on the same outer circle, the annular groove 52 is formed by the two annular grooves, a threaded through hole 54 is processed in the annular groove II of the rectangular boss 53, and the threaded through hole 54 is perpendicular to the annular groove II;
the feedback plate II 1 is a cuboid 11, and two through holes 12 matched with the threaded blind holes 55 are processed on the side surface of the cuboid 11;
placing a pull wire 6 in an annular groove 52 of a feedback plate I5, wherein one end of the pull wire 6 extends out of the annular groove 52 on the side of a cuboid boss 53, screwing two screws 3 into threaded through holes 54 from two sides of the cuboid boss 53, clamping and fixing the pull wire 6, enabling the pull wire 6 to be tightly attached to the annular groove 52 of the feedback plate I5, and then enabling two side surfaces of a triangular groove 56 of the feedback plate I5 to be tightly attached to the outer surface of a valve rod; two through holes 12 of the feedback plate II 1 are aligned with two threaded blind holes 55 of the feedback plate I5, so that the valve rod is arranged on the inner sides of the feedback plate I5 and the feedback plate II 1 and is fixed by two screws 2.
Among them, the triangular groove 56 is most preferably usedA isosceles right triangle, if the length of two right-angle sides of the isosceles right triangle is a, the diameter range of the valve rod suitable for the feedback member is
Between (fig. 7) and 2a (fig. 8), the kinds of parts are simplified.
Combine fig. 9, fig. 10 to show, will the utility model discloses a measurement feedback spare B is used for the valve rod angular displacement feedback of angular travel valve 8, and the other end of acting as go-between 6 is connected with sensor 7, and sensor 7's output and fault detection appearance's displacement detection mouth of acting as go-between is connected. When the valve rod of the pneumatic actuator 9 driving the angular travel valve rotates, the valve rod can drive the measurement feedback piece B to rotate, so that the stay wire 6 fixed on the feedback plate I5 is wound in the annular groove 52 of the feedback plate I5 along the opposite direction, the wound length of the stay wire 6 is transmitted to the stay wire sensor 7, the linear displacement received by the stay wire sensor 7 is equal to the wound length of the stay wire 6, the radii of the annular groove 52 of the feedback plate I5 and the stay wire 6 are known, the stay wire sensor 7 can calculate the rotation angle of the feedback plate I5 corresponding to the wound length of the stay wire, and the rotation angle is the rotation angle of the valve rod.
The winding length of the stay wire is equal to the radius multiplied by the radian corresponding to the rotating angle, and the radian is obtained by dividing the rotating angle by 180 and multiplying the circumferential rate pi, which is specifically as follows:
by
The method can obtain the product with the advantages of high yield,
wherein:
l-stay wire winding length;
r-radius of annular groove of feedback part I;
r-radius of pull cord.
The utility model discloses use with the cooperation of pull sensor 7, can be used for the angular displacement feedback of angular travel valve 8, or be used for valve locator 10, also can be used to other valve rod angular displacement occasions that need detect angular travel valve such as fault detection appearance.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (6)
1. An angular displacement measurement feedback part of an angular travel valve is characterized by comprising a feedback plate I (5) and a feedback plate II (1);
the feedback plate I (5) is a semi-cylinder (51), a triangular groove (56) is formed in the semi-cylinder (51), a cuboid boss (53) is machined on one side of the semi-cylinder (51), annular grooves (52) are formed in the semi-cylinder (51) and the cuboid boss (53), and a threaded through hole (54) is formed in the cuboid boss (53);
the feedback plate II (1) is a cuboid (11);
feedback board I (5) are connected and are fixed the valve rod in triangle-shaped groove (56) of feedback board I (5) with feedback board II (1), install in cuboid boss (53) acting as go-between (6).
2. The angular displacement measurement feedback piece of the angular travel valve according to claim 1, wherein two threaded blind holes (55) are formed in rectangular surfaces on two sides of the axis of the feedback plate I (5), two through holes (12) matched with the threaded blind holes (55) are formed in the feedback plate II (1), and the feedback plate I (5) and the feedback plate II (1) are connected through screws (2).
3. An angular travel valve displacement measurement feedback member according to claim 1 or 2, wherein the triangular groove (56) is an isosceles right triangle.
4. The angular displacement measurement feedback piece of the angular travel valve according to claim 1, wherein a first annular groove is formed in the outer side of the semi-cylinder (51), a second annular groove with the same radius as the first annular groove is formed in the cuboid boss (53), and the first annular groove and the second annular groove form an annular groove (52) located on the same excircle.
5. An angular travel valve displacement measurement feedback member according to claim 4, wherein the threaded through bore (54) is perpendicular to the second annular groove.
6. An angular displacement measurement feedback member of an angular travel valve according to claim 1, characterized in that two screws (3) are installed in the threaded through hole (54), and the pull wire (6) is clamped and fixed by the two screws (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023151482.0U CN213778970U (en) | 2020-12-24 | 2020-12-24 | Angular displacement measurement feedback piece of angular travel valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023151482.0U CN213778970U (en) | 2020-12-24 | 2020-12-24 | Angular displacement measurement feedback piece of angular travel valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213778970U true CN213778970U (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023151482.0U Active CN213778970U (en) | 2020-12-24 | 2020-12-24 | Angular displacement measurement feedback piece of angular travel valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213778970U (en) |
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2020
- 2020-12-24 CN CN202023151482.0U patent/CN213778970U/en active Active
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