CN117705039A - Rotary valve displacement measuring method and rotary valve displacement measuring device - Google Patents
Rotary valve displacement measuring method and rotary valve displacement measuring device Download PDFInfo
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- CN117705039A CN117705039A CN202410167581.1A CN202410167581A CN117705039A CN 117705039 A CN117705039 A CN 117705039A CN 202410167581 A CN202410167581 A CN 202410167581A CN 117705039 A CN117705039 A CN 117705039A
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- 238000005259 measurement Methods 0.000 claims abstract description 32
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- A Measuring Device Byusing Mechanical Method (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a rotary valve displacement measuring method and a rotary valve displacement measuring device, which relate to the technical field of valve displacement measurement, wherein a locking component is arranged on the outer ring of a valve rotating shaft and can synchronously rotate with the valve rotating shaft, so that when the rotary valve is subjected to opening adjustment, the valve rotating shaft can drive the locking component to synchronously rotate, and the locking component can simultaneously drive the end part of a stay rope unit to synchronously rotate, thereby increasing or reducing the extension amount of the stay rope unit from a stay rope sensor, further enabling the stay rope sensor to obtain a length change value, and obtaining an angle change value through conversion of a length and angle measurement relation, thereby obtaining the angle change of the rotary valve and obtaining the opening information of the rotary valve; in the scheme, the valve rotation shaft is not only suitable for the condition that the valve rotation shaft is exposed, but also suitable for the condition that the valve rotation shaft is exposed only in the middle part, and the aperture measurement of the condition can be met, so that the valve rotation shaft has the advantage of wide application range.
Description
Technical Field
The invention relates to the technical field of valve opening measurement, in particular to a rotary valve displacement measuring method and a rotary valve displacement measuring device.
Background
The valve body is a pipeline device for regulating fluid flow and is widely applied to various pipeline systems; the valve body comprises a butterfly valve, a ball valve and other rotary valves, and in order to realize the opening control of the valve body, a sensor is required to be arranged for the valve body so as to acquire the opening information of the valve body in real time, thereby facilitating the subsequent opening control of the valve body.
Currently, taking a butterfly valve as an example, a valve rotating shaft extending out of the body is configured, the valve rotating shaft is correspondingly connected with the valve rotating shaft, an angle sensor is arranged above the valve rotating shaft, the angle sensor is configured with a sensor rotating shaft, and the sensor rotating shaft is fixedly connected with the valve rotating shaft; therefore, after the opening of the butterfly valve is adjusted, the valve rotating shaft correspondingly rotates to drive the valve rotating shaft to synchronously rotate, so that the angle sensor can acquire the rotation angle of the butterfly valve, and further the opening information of the butterfly valve can be obtained.
However, with the increasing types of valve bodies, there are valve bodies with non-exposed valve rotation shafts, so that the conventional angle sensor cannot easily connect the sensor rotation shaft with the valve rotation shaft of the valve body, and thus the conventional valve body opening measuring scheme cannot be implemented, that is, the current valve body opening measuring scheme has the defect of narrow application range.
Disclosure of Invention
The invention aims to provide a rotary valve displacement measuring method and a rotary valve displacement measuring device, which solve the problem of narrow application range of a valve opening measuring scheme in the prior art.
To achieve the purpose, the invention adopts the following technical scheme:
a rotary valve displacement measurement method, comprising:
presetting a measurement relation between length and angle, and providing a pull rope sensor; the pull rope sensor is connected with a pull rope unit;
a locking component capable of synchronously rotating with the valve rotating shaft is arranged on the outer ring of the valve rotating shaft, and the end part of the pull rope unit is arranged around the locking component and fixedly connected to the locking component;
acquiring a length change value of the rope pulling unit through the rope pulling sensor;
and obtaining an angle change value according to the length change value and the measurement relation.
Optionally, the measurement relation is:
wherein,and for the length change value, A is the angle change value, d is the diameter of the pull rope unit, and R is the curvature radius of the pull rope unit around the locking assembly.
Optionally, the locking component capable of rotating synchronously with the valve rotating shaft is arranged on the outer ring of the valve rotating shaft, and the end part of the pull rope unit is arranged around the locking component and fixedly connected to the locking component, and the locking component comprises:
the locking component is sleeved outside the valve rotating shaft along the radial direction of the valve rotating shaft;
the locking component is fixedly connected with the valve rotating shaft;
fixedly connecting the end of the rope pulling unit to the locking assembly and enabling the rope pulling unit to be at least partially arranged around the locking assembly;
and fixedly connecting the stay rope sensor at a calibration position so as to enable the stay rope unit to be in a tensioning state.
The rotary valve displacement measuring device adopts the rotary valve displacement measuring method, and comprises a locking assembly, a pull rope sensor, a pull rope unit and a processing unit;
the locking component can be coaxially arranged with the valve rotating shaft and synchronously rotate; the end part of the pull rope unit is arranged around the locking assembly and is fixedly connected to the locking assembly; the stay cord sensor is used for acquiring a length change value of the stay cord unit;
the processing unit is used for obtaining an angle change value according to the length change value and a preset measurement relation.
Optionally, the locking assembly comprises a locking shell and a locking part, a locking groove is formed in the locking shell, a first avoidance hole is formed in the bottom wall of the locking groove, and an inlet is formed in the side wall of the locking groove;
the valve rotating shaft can penetrate through the inlet opening in the radial direction and enter the first avoidance hole, and is clamped by the locking part.
Optionally, the shell surface of the locking shell outside the locking groove comprises a ring-shaped guiding part, and the guiding part is provided with a rope fixing part fixedly connected with the end part of the rope pulling unit;
the end part of the rope pulling unit surrounds the outside of the locking shell along the guide part and is fixedly connected to the rope fixing part.
Optionally, the locking part comprises a first locking block and a second locking block which are respectively connected with the locking shell in a rotating way; the first avoidance hole is arranged between the first locking block and the second locking block;
the first locking block and the second locking block can rotate along the direction close to the hole of the first avoidance hole so as to clamp the valve rotating shaft.
Optionally, the first locking block includes a first rotating shaft portion rotatably connected with the locking housing, and the first locking block further includes a first abutting portion and a second abutting portion;
the second abutting part and the first abutting part are sequentially arranged along the direction close to the first avoidance hole, and the distance from the second abutting part to the first rotating shaft part is larger than the distance from the first abutting part to the first rotating shaft part;
and a first avoidance groove is formed between the first abutting part and the second abutting part of the first locking block.
Optionally, the second locking block includes a second rotating shaft portion rotatably connected with the locking housing, and the second locking block further includes a third abutting portion and a fourth abutting portion;
the fourth abutting part and the third abutting part are sequentially arranged along the direction close to the first avoidance hole, and the distance from the fourth abutting part to the second rotating shaft part is larger than the distance from the third abutting part to the second rotating shaft part;
and a second avoidance groove is formed between the third abutting part and the fourth abutting part of the second locking block.
Optionally, a worm wheel and a worm are respectively connected in the locking shell in a rotating way, the worm wheel is meshed with the worm, and a second avoiding hole is formed in the worm wheel corresponding to the first avoiding hole;
two guide grooves are formed in the second avoidance hole, the first locking block comprises a first guide piece which is inserted into one guide groove and is in sliding connection with the guide groove, and the second locking block comprises a second guide piece which is inserted into the other guide groove and is in sliding connection with the guide groove.
Compared with the prior art, the invention has the following beneficial effects:
according to the rotary valve displacement measuring method and the rotary valve displacement measuring device, the locking component is arranged on the outer ring of the valve rotating shaft and can synchronously rotate with the valve rotating shaft, so that when the rotary valve is subjected to opening adjustment, the valve rotating shaft can drive the locking component to synchronously rotate, the locking component can simultaneously rotate to drive the end part of the stay cord unit to synchronously rotate, the extension amount of the stay cord unit from the stay cord sensor is increased or reduced, the length change value of the stay cord sensor is further obtained, and the angle change value is obtained through conversion according to a length-angle measuring relation, so that the angle change of the rotary valve is obtained, and the opening information of the rotary valve is obtained; in the scheme, the rotary valve displacement measuring method and the rotary valve displacement measuring device are suitable for the condition that the valve rotating shaft is exposed and the condition that the valve rotating shaft is exposed only in the middle, and therefore the rotary valve displacement measuring method and the rotary valve displacement measuring device have the advantage of wide application range.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective.
FIG. 1 is a schematic flow chart of a rotary valve displacement measuring method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first overall structure of a rotary valve displacement measurement device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second overall structure of a rotary valve displacement measurement device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a third overall structure of a rotary valve displacement measurement device according to an embodiment of the present invention;
FIG. 5 is a schematic top view of a rotary valve displacement measurement device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a measurement principle of a rotary valve displacement measurement device according to an embodiment of the present invention.
Illustration of: 10. a locking assembly; 110. a locking housing; 111. a locking groove; 112. a first avoidance hole; 113. an access port; 114. a guide part; 115. a rope fixing part;
120. a locking part; 130. a first locking block; 131. a first abutting portion; 132. a second abutting portion; 133. a first rotating shaft portion; 134. a first avoidance groove; 135. a first guide; 140. the second locking block; 141. a third abutting portion; 142. a fourth abutting portion; 143. a second rotating shaft portion; 144. a second avoidance groove; 145. a second guide;
151. a worm wheel; 152. a worm; 153. a second avoidance hole; 154. a guide groove;
20. a pull rope sensor; 30. a rope pulling unit; 40. and a valve rotating shaft.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Fig. 1 to 6 show, fig. 1 is a schematic flow chart of a rotary valve displacement measuring method according to an embodiment of the present invention, fig. 2 is a schematic first overall structure of a rotary valve displacement measuring device according to an embodiment of the present invention, fig. 3 is a schematic second overall structure of a rotary valve displacement measuring device according to an embodiment of the present invention, fig. 4 is a schematic third overall structure of a rotary valve displacement measuring device according to an embodiment of the present invention, fig. 5 is a schematic top view of a rotary valve displacement measuring device according to an embodiment of the present invention, and fig. 6 is a schematic measuring principle of a rotary valve displacement measuring device according to an embodiment of the present invention.
Embodiment one:
the present embodiment provides a rotary valve displacement measuring method, which is suitable for a scenario of measuring the opening of a rotary valve (also called a valve body), wherein the rotary valve includes, but is not limited to, a butterfly valve, a ball valve, etc., and the method has no limitation on whether a valve rotating shaft 40 of the rotary valve is exposed, i.e., the valve rotating shaft 40 can be exposed to the rotary valve at a single end part or can be closed at both end parts, and only the middle part is exposed; in the embodiment, the rotary valve displacement measuring method is optimized to adapt to the measuring requirements of rotary valves of different types, and the rotary valve displacement measuring method has the advantage of wide application range.
As shown in fig. 1, 2 and 6, the rotary valve displacement measuring method in the present embodiment specifically includes:
s100, presetting a measurement relation of length and angle, and providing a pull rope sensor 20; the pull rope sensor 20 is connected with a pull rope unit 30, the pull rope unit 30 can extend out of or retract back from the pull rope sensor 20, and at the moment, the pull rope sensor 20 can measure the extending amount or retracting amount of the pull rope unit 30, namely a length change value; wherein, the pull rope sensor 20 can be a conventional length sensor, etc., and is not particularly limited;
s200, a locking assembly 10 capable of rotating synchronously with the valve rotating shaft 40 is arranged outside the valve rotating shaft 40 in a surrounding manner, and the end part of the pull rope unit 30 is arranged around the locking assembly 10 and fixedly connected to the locking assembly 10; the locking assembly 10 is disposed around the locking assembly 10, meaning that the portion wound around the locking assembly 10 is circular, and the end portion of the locking assembly is fixedly connected to the locking assembly 10, meaning that when the valve rotating shaft 40 and the locking assembly 10 rotate, the end portion of the pull rope unit 30 rotates synchronously, so that the portion of the pull rope unit 30 wound around the locking assembly 10 increases or decreases, when the pull rope unit 30 increases, meaning that the length change value measured by the pull rope sensor 20 increases, and when the pull rope unit 30 decreases, meaning that the length change value measured by the pull rope sensor 20 decreases, the visible length change value has a one-to-one correspondence with the rotation angle of the valve rotating shaft 40, and further the rotation angle of the valve rotating shaft 40 can be measured according to the length change value;
s300, acquiring a length change value of the rope pulling unit 30 through the rope pulling sensor 20;
and S400, obtaining an angle change value according to the length change value and the measurement relation, namely obtaining the rotation angle of the valve rotating shaft 40, and further obtaining the opening information of the rotary valve.
Specifically, the locking assembly 10 is annularly arranged outside the valve rotating shaft 40, and the locking assembly 10 can synchronously rotate with the valve rotating shaft 40, so that when the rotary valve is subjected to opening adjustment, the valve rotating shaft 40 can drive the locking assembly 10 to synchronously rotate, and the end part of the stay cord unit 30 can be driven to synchronously rotate while the locking assembly 10 rotates, so that the extension amount of the stay cord unit 30 from the stay cord sensor 20 is increased or reduced, the length change value of the stay cord sensor 20 is further obtained, and the angle change value is obtained through conversion according to a measurement relation between the length and the angle, so that the angle change of the rotary valve is obtained, and the opening information of the rotary valve is obtained; in the above-mentioned scheme, not only is suitable for the condition that the valve rotation axis 40 exposes, but also is suitable for the condition that the valve rotation axis 40 only has the middle part to expose, therefore, this rotary valve displacement measuring method possesses the advantage that the range of application is wide.
In this embodiment, as shown in fig. 6, the measurement relation is:
wherein,for the length variation value, a is an angle variation value, i.e., a rotation angle of the valve rotation shaft 40, d is a diameter of the rope pulling unit 30, R is a radius of curvature of the rope pulling unit 30 around the locking assembly 10, more specifically, a radius of curvature of the rope pulling unit 30 around the guide 114 of the locking assembly 10, i.e., a radius of the guide 114; that is, in the present embodiment, the angular change of the valve rotation shaft 40 is indirectly measured by measuring the arc length change of the rope pulling unit 30 at the guide 114 to measure the opening degree of the rotary valve.
Specifically, S200, a locking assembly 10 capable of rotating synchronously with the valve rotating shaft 40 is looped around the valve rotating shaft 40, and the end of the rope pulling unit 30 is disposed around the locking assembly 10 and fixedly connected to the locking assembly 10, and includes:
s210, sleeving the locking assembly 10 outside the valve rotating shaft 40 along the radial direction of the valve rotating shaft 40; the locking assembly 10 is radially sleeved outside the valve rotating shaft 40, and the locking assembly 10 and the valve rotating shaft 40 can be positioned under the condition that only the middle part of the valve rotating shaft 40 is exposed;
s220, the locking assembly 10 is fastened and connected with the valve rotating shaft 40; the fastening connection mode includes but is not limited to the modes of rocker arm clamping, bolt abutting and the like, and the swing arm clamping mode is preferred in the embodiment, so that the clamping device has the advantages of stable clamping and the like;
s230, fixedly connecting the end part of the rope pulling unit 30 to the locking assembly 10, and enabling the rope pulling unit 30 to be at least partially arranged around the locking assembly 10 so as to ensure that the rope pulling unit 30 can be arranged around the guide part 114 with the radius R;
s240, fixedly connecting the stay wire sensor 20 to a calibration position so as to enable the stay wire unit 30 to be in a tensioning state; for example, the rope sensor 20 may be fixed to a frame to which the rotary valve is mounted to secure the rope unit 30 in a tensioned state, preventing the rope unit 30 from being loosened, thereby securing the measurement accuracy.
In summary, the rotary valve displacement measuring method provided by the embodiment has the advantages of wide application range, high stability, high measuring precision and the like.
Embodiment two:
the embodiment provides a rotary valve displacement measuring device, which is suitable for a scene of measuring the opening degree of a rotary valve (also called a valve body), and has the advantage of wide application range by optimizing the rotary valve displacement measuring device to adapt to different types of rotary valve measuring requirements.
As shown in fig. 2 to 6, the rotary valve displacement measuring device in the present embodiment adopts the rotary valve displacement measuring method in the first embodiment, and specifically includes a locking assembly 10, a pull rope sensor 20, a pull rope unit 30, and a processing unit; wherein the locking assembly 10 can be coaxially arranged with the valve rotating shaft 40 and synchronously rotate; the end of the rope pulling unit 30 is arranged around the locking assembly 10 and fixedly connected to the locking assembly 10; the rope sensor 20 is used for acquiring a length variation value of the rope unit 30; the processing unit is used for obtaining an angle change value according to the length change value and a preset measurement relation, and further obtaining the opening value of the rotary valve.
In this embodiment, as shown in fig. 2 to 5, the locking assembly 10 includes a locking housing 110 and a locking portion 120, a locking groove 111 is formed in the locking housing 110, a first avoidance hole 112 is formed in a groove bottom wall of the locking groove 111, and an inlet 113 is formed in a groove side wall of the locking groove 111; wherein the valve rotation shaft 40 can pass through the inlet 113 and enter the first escape hole 112 in the radial direction and be clamped by the locking part 120.
Further, as shown in fig. 5, the casing surface of the locking housing 110 outside the locking groove 111 includes a guide portion 114 having a ring shape, and a rope fixing portion 115 fixedly connected to the end portion of the rope pulling unit 30 is provided on the guide portion 114; the end of the rope pulling unit 30 is wound around the outside of the locking housing 110 along the guide 114 and fixedly coupled to the rope fixing portion 115. Wherein, in step S230, the end of the rope pulling unit 30 is fixedly connected to the locking assembly 10, and the rope pulling unit 30 is at least partially disposed around the locking assembly 10, that is, the rope pulling unit 30 is disposed around the locking housing 110 around the guiding portion 114 and finally fixedly connected to the rope fixing portion 115, the fixing manner includes, but is not limited to, knotting the rope pulling unit 30 on the rope fixing portion 115, the rope fixing portion 115 clamping the rope pulling unit 30, and the like.
In the present embodiment, as shown in fig. 5, the locking part 120 includes a first locking piece 130 and a second locking piece 140 rotatably connected to the locking housing 110, respectively; the first avoidance hole 112 is disposed between the first locking block 130 and the second locking block 140; the first locking block 130 and the second locking block 140 can both rotate along the direction close to the inside of the first avoiding hole 112, that is, the clockwise rotation direction of each locking block in the drawing, so as to clamp the valve rotating shaft 40.
Specifically, the first locking block 130 includes a first rotating shaft portion 133 rotatably connected to the locking housing 110, and the first locking block 130 further includes a first abutting portion 131 and a second abutting portion 132; along the direction close to the inside of the first avoidance hole 112, the second abutting portion 132 and the first abutting portion 131 are sequentially arranged, the distance between the second abutting portion 132 and the first rotating shaft portion 133 is larger than the distance between the first abutting portion 131 and the first rotating shaft portion 133, and a first avoidance groove 134 is formed between the first abutting portion 131 and the second abutting portion 132 by the first locking block 130.
Specifically, the second locking block 140 includes a second rotation shaft portion 143 rotatably connected to the locking housing 110, and the second locking block 140 further includes a third abutting portion 141 and a fourth abutting portion 142; the fourth abutting portion 142 and the third abutting portion 141 are sequentially arranged along the direction close to the inside of the first avoidance hole 112, and the distance between the fourth abutting portion 142 and the second rotating shaft portion 143 is larger than the distance between the third abutting portion 141 and the second rotating shaft portion 143; the second lock block 140 has a second escape groove 144 formed between the third abutting portion 141 and the fourth abutting portion 142.
After the valve rotating shaft 40 is placed in the first avoiding hole 112, the first locking block 130 and the second locking block 140 can be respectively rotated in a direction close to the hole of the first avoiding hole 112, that is, in a clockwise rotation direction of the locking blocks in the drawing, so as to clamp the valve rotating shaft 40. In the clamping process, the first abutting part 131 and the third abutting part 141 abut against the valve rotating shaft 40 in advance to pre-position the valve rotating shaft 40, then the first abutting part 131 and the third abutting part 141 slide on the valve rotating shaft 40 along with the continued rotation of the first abutting part 131 and the third abutting part 141, then the second abutting part 132 and the fourth abutting part 142 abut against the valve rotating shaft 40 to secondarily position the valve rotating shaft 40, and at the moment, the first abutting part 131, the third abutting part 141, the second abutting part 132 and the fourth abutting part 142 abut against the valve rotating shaft 40 to tightly hold the valve rotating shaft 40; for the progressive clamping mechanism, the distribution of the balance force can be facilitated, the stress concentration phenomenon on the valve rotating shaft 40 is reduced, the abrasion of the valve rotating shaft 40 and the locking block is reduced, and the whole service life is further prolonged.
On the basis of the above embodiment, the guide part 114 is provided with an annular groove for the rope pulling unit 30 to be placed in, so that the rope pulling unit 30 is kept at a horizontal position, and the precision is further improved; in addition, in the working process of the rotary valve, heat can be generated, a heat-conducting coating can be coated in the groove, and the stay cord unit 30 is heated more uniformly through the arrangement of the heat-conducting coating, so that the stay cord unit 30 is prevented from being heated locally by the rotary valve in the working process of the rotary valve, and the stay cord unit 30 is prevented from being overheated locally. That is, through the arrangement of the grooves, the stay cord unit 30 can be ensured to be positioned at the horizontal position, the measurement accuracy is improved, the heat on the stay cord unit 30 is homogenized by matching with the heat conducting coating, the whole temperature of the stay cord unit 30 can be homogenized by matching with the semi-surrounding effect of the grooves on the stay cord unit 30, the phenomenon of stress concentration of the stay cord unit 30 is avoided, and the stay cord unit 30 is prevented from being broken.
Further, the locking housing 110 is rotatably connected with a worm wheel 151 and a worm 152, the worm wheel 151 is meshed with the worm 152, and a second avoiding hole 153 is formed in the worm wheel 151 corresponding to the first avoiding hole 112; the second avoidance hole 153 is provided with two guide grooves 154, the first locking block 130 comprises a first guide member 135 inserted into one of the guide grooves 154 and slidably connected with the guide groove 154, and the second locking block 140 comprises a second guide member 145 inserted into the other guide groove 154 and slidably connected with the guide groove 154. For example, after the valve rotating shaft 40 enters the first avoiding hole 112, the worm 152 may be manually rotated to drive the worm wheel 151 to rotate, and further drive the locking blocks to rotate around the rotating shaft portions thereof, so that the locking blocks (the first locking block 130 and the second locking block 140) can rotate along the direction close to the hole of the first avoiding hole 112 under the action of the guide groove 154 and the guide member, thereby realizing clamping of the valve rotating shaft 40.
It should be noted that, the worm wheel 151 and the worm 152 are utilized to drive the locking block to rotate, so that the locking block can be ensured to clamp the valve rotating shaft 40 on the premise that the worm 152 does not rotate due to the self-locking characteristic between the worm wheel 151 and the worm 152; meanwhile, by matching with the arrangement of the first locking block 130 and the second locking block 140, the worm wheel 151 and the worm 152 can be utilized to stably drive the locking blocks to gradually clamp the valve rotating shaft 40, so that the locking blocks can be further ensured to clamp the valve rotating shaft 40, the synchronous rotation of the locking assembly 10 and the valve rotating shaft 40 is ensured, the measurement precision is improved, the locking blocks can be prevented from loosening, the measurement stability is improved, the abrasion of the valve rotating shaft 40 is reduced, and the whole service life is prolonged.
In summary, the rotary valve displacement measuring device provided in the embodiment has the advantages of wide application range, high stability, high measurement accuracy, long service life and the like.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A rotary valve displacement measurement method, comprising:
presetting a measurement relation between length and angle, and providing a pull rope sensor; the pull rope sensor is connected with a pull rope unit;
a locking component capable of synchronously rotating with the valve rotating shaft is arranged on the outer ring of the valve rotating shaft, and the end part of the pull rope unit is arranged around the locking component and fixedly connected to the locking component;
acquiring a length change value of the rope pulling unit through the rope pulling sensor;
and obtaining an angle change value according to the length change value and the measurement relation.
2. A rotary valve displacement measurement method according to claim 1, wherein the measurement relation is:
wherein,and for the length change value, A is the angle change value, d is the diameter of the pull rope unit, and R is the curvature radius of the pull rope unit around the locking assembly.
3. The rotary valve displacement measuring method according to claim 1, wherein a locking assembly capable of rotating synchronously with the valve rotating shaft is provided at an outer ring of the valve rotating shaft, and an end portion of the rope pulling unit is provided around the locking assembly and fixedly connected to the locking assembly, comprising:
the locking component is sleeved outside the valve rotating shaft along the radial direction of the valve rotating shaft;
the locking component is fixedly connected with the valve rotating shaft;
fixedly connecting the end of the rope pulling unit to the locking assembly and enabling the rope pulling unit to be at least partially arranged around the locking assembly;
and fixedly connecting the stay rope sensor at a calibration position so as to enable the stay rope unit to be in a tensioning state.
4. A rotary valve displacement measuring device, characterized in that the rotary valve displacement measuring method according to any one of claims 1-3 is adopted, comprising a locking assembly (10), a pull rope sensor (20), a pull rope unit (30) and a processing unit;
the locking component (10) can be coaxially arranged with the valve rotating shaft (40) and synchronously rotate; the end part of the pull rope unit (30) is arranged around the locking assembly (10) and is fixedly connected to the locking assembly (10); the stay wire sensor (20) is used for acquiring a length change value of the stay wire unit (30);
the processing unit is used for obtaining an angle change value according to the length change value and a preset measurement relation.
5. The rotary valve displacement measurement device according to claim 4, wherein the locking assembly (10) comprises a locking housing (110) and a locking part (120), a locking groove (111) is formed in the locking housing (110), a first avoiding hole (112) is formed in the groove bottom wall of the locking groove (111), and an inlet (113) is formed in the groove side wall of the locking groove (111);
wherein the valve rotation shaft (40) can pass through the inlet port (113) and enter the first avoidance hole (112) along the radial direction, and is clamped by the locking part (120).
6. A rotary valve displacement measuring device according to claim 5, wherein the housing surface of the locking housing (110) outside the locking groove (111) comprises a ring-shaped guiding portion (114), and a rope fixing portion (115) fixedly connected to the end portion of the rope pulling unit (30) is provided on the guiding portion (114);
the end part of the rope pulling unit (30) surrounds the outside of the locking shell (110) along the guide part (114) and is fixedly connected to the rope fixing part (115).
7. A rotary valve displacement measuring device according to claim 5, wherein the locking portion (120) comprises a first locking block (130) and a second locking block (140) rotatably connected to the locking housing (110), respectively; the first avoidance hole (112) is arranged between the first locking block (130) and the second locking block (140);
the first locking block (130) and the second locking block (140) can rotate along the direction close to the inside of the first avoiding hole (112) so as to clamp the valve rotating shaft (40).
8. A rotary valve displacement measurement device according to claim 7, wherein the first lock block (130) comprises a first shaft part (133) rotatably connected to the lock housing (110), the first lock block (130) further comprising a first abutment (131) and a second abutment (132);
the second abutting part (132) and the first abutting part (131) are sequentially arranged along the direction close to the inside of the first avoidance hole (112), and the distance from the second abutting part (132) to the first rotating shaft part (133) is larger than the distance from the first abutting part (131) to the first rotating shaft part (133);
and a first avoidance groove (134) is formed between the first abutting part (131) and the second abutting part (132) of the first locking block (130).
9. A rotary valve displacement measurement device according to claim 7, wherein the second lock block (140) comprises a second swivel part (143) rotatably connected to the lock housing (110), the second lock block (140) further comprising a third abutment (141) and a fourth abutment (142);
the fourth abutting part (142) and the third abutting part (141) are sequentially arranged along the direction close to the inside of the first avoidance hole (112), and the distance from the fourth abutting part (142) to the second rotating shaft part (143) is larger than the distance from the third abutting part (141) to the second rotating shaft part (143);
and a second avoidance groove (144) is formed between the third abutting portion (141) and the fourth abutting portion (142) of the second locking block (140).
10. The rotary valve displacement measurement device according to claim 7, wherein a worm wheel (151) and a worm (152) are rotatably connected in the locking housing (110), the worm wheel (151) is meshed with the worm (152), and a second avoidance hole (153) is formed in the worm wheel (151) corresponding to the first avoidance hole (112);
two guide grooves (154) are formed in the second avoidance hole (153), the first locking block (130) comprises a first guide piece (135) which is inserted into one guide groove (154) and is in sliding connection with the guide groove (154), and the second locking block (140) comprises a second guide piece (145) which is inserted into the other guide groove (154) and is in sliding connection with the guide groove (154).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410167581.1A CN117705039B (en) | 2024-02-06 | 2024-02-06 | Rotary valve displacement measuring method and rotary valve displacement measuring device |
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| CN202410167581.1A CN117705039B (en) | 2024-02-06 | 2024-02-06 | Rotary valve displacement measuring method and rotary valve displacement measuring device |
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| CN117705039B CN117705039B (en) | 2024-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118392482A (en) * | 2024-06-28 | 2024-07-26 | 深圳市南海核电技术有限公司 | Performance test method, device, equipment and storage medium of pneumatic rotary valve |
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| JP2012013179A (en) * | 2010-07-02 | 2012-01-19 | Denso Corp | Valve control device |
| CN104948545A (en) * | 2014-03-28 | 2015-09-30 | 富泰华工业（深圳）有限公司 | Popup locking device |
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| CN118392482B (en) * | 2024-06-28 | 2024-09-27 | 深圳市南海核电技术有限公司 | Performance test method, device, equipment and storage medium of pneumatic rotary valve |
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| CN117705039B (en) | 2024-04-09 |
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