CN114295342B - Intelligent detection device and detection method for valve positioner - Google Patents
Intelligent detection device and detection method for valve positioner Download PDFInfo
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- CN114295342B CN114295342B CN202111456495.5A CN202111456495A CN114295342B CN 114295342 B CN114295342 B CN 114295342B CN 202111456495 A CN202111456495 A CN 202111456495A CN 114295342 B CN114295342 B CN 114295342B
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Abstract
The invention discloses an intelligent detection device of a valve positioner, which comprises a bottom plate and a pilot valve, wherein, the pilot valve is fixedly arranged at the top of the bottom plate, the end part of the valve rod of the pilot valve, which penetrates out of the pilot valve, is fixedly connected with a transmission rod, the air inlet of the pilot valve is communicated with a detection mechanism, the detection mechanism comprises an observation square pipe, the observation square pipe is arranged at the top of the bottom plate, a second pipeline is communicated between the specific position of the observation square pipe and the air inlet of the pilot valve, liquid is stored in the observation square pipe, the observation square tube is of a U-shaped structure, the port of the observation square tube is closed, one port of the observation square tube is communicated with a driving mechanism for injecting and exhausting gas into the observation square tube, the invention can rapidly detect the closing performance of the pilot valve, meanwhile, the stroke of the valve rod can be detected, and the communication air tightness between the pilot valve air inlet and the detection mechanism can be detected.
Description
Technical Field
The invention relates to the technical field of mechanical part testing, in particular to an intelligent detection device and a detection method for a valve positioner.
Background
The valve positioner is a main accessory of the regulating valve, the valve positioner regulates the output of the valve by controlling the position of the valve to play a role in positioning the valve, and the pilot valve is a core component in the valve positioner assembly and provides the driving of the valve through a control command.
The pilot valve comprises a valve body, a valve core, a valve rod and a reset spring, wherein the opening stroke of the valve rod can reflect the delay condition of the opening of the valve core, and the reset spring provides the valve rod for opening.
In actual use, the pilot valve needs to be replaced and cleaned frequently, the problem that the pilot valve is blocked and the like to cause the malfunction or accuracy imbalance of the valve positioner is prevented, the use is influenced, and therefore the replaced pilot valve needs to be subjected to air tightness detection.
According to the retrieval, the intelligent control valve detection system and the valve detection method are provided, wherein the sealing detection is carried out, soapy water is smeared to a sealing position through a mechanical wall, a camera shoots the soapy water state at the sealing position and transmits shot information to a control system, the control system compares the received soapy water state at the sealing position with qualified soapy water state information stored in the control system, the detection mode has some defects, the soapy water can be influenced by external factors when in use, and the quality of the soapy water is easy to cause annihilation of foam and expansion non-air pressure transformation.
Therefore, a detection device with good detection quality is required.
Application No. of the above patent documents is provided: CN 201610260566.7.
Disclosure of Invention
The invention aims to provide an intelligent detection device and a detection method for a valve positioner, which have the advantages of rapidly detecting the closing performance of a pilot valve, detecting the stroke of a valve rod and solving the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent detection device of a valve positioner comprises a bottom plate and a pilot valve, wherein the pilot valve is fixedly arranged at the top of the bottom plate, the end part of the valve rod of the pilot valve, which penetrates out of the pilot valve, is fixedly connected with a transmission rod, an air inlet of the pilot valve is communicated with a detection mechanism, the detection mechanism comprises an observation square pipe, the observation square pipe is arranged at the top of the bottom plate, a second pipeline is communicated between the specific position of the observation square pipe and the air inlet of the pilot valve, the inside of the observation square tube is stored with liquid, the observation square tube is in a U-shaped structure, the port of the observation square tube is closed, one port of the observation square tube is communicated with a driving mechanism for injecting and exhausting gas into the observation square tube, the top of the bottom plate is also provided with a control mechanism for limiting the displacement of the transmission rod, and the top of the bottom plate also comprises a pre-checking mechanism for detecting the connection airtightness between the pilot valve air inlet and the detection mechanism.
Preferably, the preliminary examination mechanism comprises an empty groove, the empty groove is formed in the bottom plate, the joint of the air inlet of the pilot valve and the second pipeline is located inside the pilot valve, the inside of the pilot valve is a sealed space, the outer wall of the bottom plate is further provided with a connecting groove, the empty groove can be communicated with the outside through the connecting groove, a third pipeline is communicated with a port of the connecting groove, an inner wall of the third pipeline is fixedly connected with a mounting plate, a plurality of vent holes are formed in the top of the mounting plate in a penetrating mode, a plurality of foam balls are placed on the top of the mounting plate, and balloons are further communicated with the top of the mounting plate.
Preferably, the interior top fixedly connected with telescopic link of another port of observation side pipe, the first piston plate of output fixedly connected with of telescopic link, sliding connection about the outer wall of first piston plate and the inner wall of observation side pipe, fixedly connected with spring between the top of observation side pipe and first piston plate, the outer wall at the telescopic link is established to the spring housing.
Preferably, the control mechanism comprises an installation vertical plate fixed at the top of the bottom plate, a rotatable transmission shaft penetrates through the outer wall of the installation vertical plate, a detection plate is fixedly connected to the outer wall of the transmission shaft, the outer wall of the detection plate is in contact with the end portion of the transmission rod in an abutting mode, a first gear is fixedly connected to the outer wall of the transmission shaft, a worm is rotatably connected to the outer wall of the installation vertical plate and located below the first gear, the worm is in meshed connection with the first gear, and the stroke of the transmission rod is determined through testing the rotating angle of the first gear.
Preferably, the outer wall of installation riser still rotates and is connected with gear two, gear two is connected with gear one meshing, the outer wall fixedly connected with mounting disc that the installation riser is close to gear two, the mark has circular scale on the mounting disc, the outer wall fixedly connected with pointer of gear two, the pointer coincides with the radial line of gear two, gear two is greater than one with the drive ratio of gear one.
Preferably, actuating mechanism includes the piston case, piston case fixed connection is at the top of bottom plate, sliding connection has the second piston board about the inner wall of piston case, the top fixed mounting of piston case has the cylinder, the output fixedly connected with connecting rod of cylinder, the connecting rod run through the top of piston case and with the top fixed connection of second piston board, the inner wall intercommunication of piston case has one-way air inlet, the outer wall intercommunication of piston case has first pipeline, the other end and the observation side pipe intercommunication of first pipeline, the inside of first pipeline is provided with the check valve of the inside of the side of flow direction observation pipe.
A detection method of an intelligent detection device of a valve positioner comprises the following steps: wherein, the first step: the driving control mechanism limits the movement of the transmission rod, so that the observation square pipe closes the valve core, gas is injected into the observation square pipe through the driving mechanism, so that liquid level difference, namely left-high right-low, occurs in liquid inside the observation square pipe, the air tightness of the pilot valve is detected by observing the change of the liquid level, if the liquid level change occurs, the air tightness of the closing performance of the pilot valve is abnormal, otherwise, the closing performance of the pilot valve is normal;
step two: the inside of the square observation tube is pumped by the driving mechanism, when the liquid level difference appears at the left bottom and the right height, the air pumping is stopped at the moment, the square observation tube, the second pipeline and the pilot valve form a sealed space to form negative pressure, at the moment, the change of the liquid level is observed, if the liquid level difference becomes smaller gradually, the negative pressure disappears, namely, the abnormity of the connection part of the pilot valve air inlet and the second pipeline is illustrated, otherwise, the connection part of the pilot valve air inlet and the second pipeline is normal.
Preferably, in the first step, when gas is injected into the observation square tube, the balloon is expanded or the foam ball floats, which indicates that the connection between the gas inlet of the pilot valve and the second pipe is abnormal.
Compared with the prior art, the invention has the following beneficial effects:
the invention limits the movement of the transmission rod through the driving control mechanism, so that the observation square tube closes the valve core, and injects gas into the observation square tube through the driving mechanism, so that liquid level difference, namely, high left and low right, occurs in the liquid inside the observation square tube, the air tightness of the pilot valve is detected by observing the change of the liquid level, if the liquid level change occurs, the air tightness of the closing performance of the pilot valve is abnormal, otherwise, the closing performance of the pilot valve is normal.
Before the device is used, the joint of the air inlet of the pilot valve and a second pipeline is detected, and the displacement of the transmission rod is limited through the locking mechanism.
The inside of an observation square pipe is pumped by driving, so that a sealed space formed by the observation square pipe, a second pipeline and a pilot valve forms negative pressure, at the moment, the change of the liquid level is observed, if the liquid level difference is gradually reduced, the negative pressure disappears, namely the connection part of a pilot valve air inlet and the second pipeline is abnormal, otherwise, the connection part of the pilot valve air inlet and the second pipeline is normal.
When gas is injected into the observation square pipe, the balloon expands or the foam ball floats, and the abnormality of the connection between the gas inlet of the pilot valve and the second pipeline is also indicated.
The invention injects gas into the observation square tube to enable the liquid level difference to appear on the liquid level, namely, the liquid level difference is high at the left and low at the right, the worm can be rotated to enable the gear I to rotate, so that the transmission shaft and the detection plate rotate, the transmission rod can be gradually enabled to displace towards the detection plate under the driving of the reset spring, when the liquid level changes, namely, the air inlet of the pilot valve is communicated with the inside of the valve body of the pilot valve, at the moment, the rotation angle of the gear I is judged, the stroke of the transmission rod is recorded and compared with a normal value, when the stroke is in a controllable range, namely, the opening stroke of the valve rod is normal, otherwise, the opening stroke of the valve rod is abnormal.
The air can be exhausted into the observation square tube, so that the liquid level difference, namely the left side is low and the right side is high, and whether the opening stroke of the valve rod is normal or not can be judged.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a schematic right side view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic cross-sectional perspective view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 4 at C according to the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 4;
FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;
FIG. 8 is a schematic view of the control mechanism of the present invention; .
In the figure: 1. a base plate; 2. a pilot valve; 3. observing the square tube; 4. a first conduit; 5. a piston case; 6. a second conduit; 7. detecting a plate; 8. installing a vertical plate; 9. a balloon; 10. a drive shaft; 11. a transmission rod; 12. an empty groove; 13. a third pipeline; 14. connecting grooves; 15. a cylinder; 17. mounting a plate; 18. a foam ball; 19. a telescopic rod; 20. a spring; 21. a first piston plate; 22. a connecting rod; 23. a second piston plate; 24. a first gear; 25. a pointer; 26. a second gear; 27. mounting a disc; 28. a worm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a technical solution: an intelligent detection device and a detection method of a valve positioner comprise a bottom plate 1 and a pilot valve 2, wherein the pilot valve 2 is fixedly arranged at the top of the bottom plate 1, the end part of a valve rod of the pilot valve 2, which penetrates out of the pilot valve 2, is fixedly connected with a transmission rod 11, an air inlet of the pilot valve 2 is communicated with a detection mechanism, the detection mechanism comprises an observation square pipe 3, the observation square pipe 3 is arranged at the top of the bottom plate 1, a second pipeline 6 is communicated between the specific position of the observation square pipe 3 and the air inlet of the pilot valve 2, liquid is stored in the observation square pipe 3, the observation square pipe 3 is of a U-shaped structure, particularly, the observation square pipe 3 is a transparent pipeline, a port of the observation square pipe 3 is closed, one port of the observation square pipe 3 is communicated with a driving mechanism for injecting and exhausting air into the observation square pipe 3, and the top of the bottom plate 1 is also provided with a control mechanism for limiting the displacement of the transmission rod 11, and the device also comprises a pre-checking mechanism for detecting the connection airtightness between the air inlet of the pilot valve 2 and the detection mechanism.
The application in the new energy automobile industry is generally monitoring, a regulating valve is formed by a valve positioner, the regulating valve is usually matched with a pneumatic regulating valve for use, the regulating valve receives an output signal of the regulator, the output signal of the regulating valve is used for controlling the pneumatic regulating valve, after the regulating valve acts, the displacement of a valve rod is fed back to the valve positioner through a mechanical device, the valve position condition is transmitted to an upper system through an electric signal, the regulating valve is applied to an intelligent terminal of an automobile, the use condition of an electrical system and electrical loads of various branches is remotely monitored, digital monitoring and energy management are realized, the rate is increased, and the management and maintenance cost is reduced.
Therefore, the performance of the valve positioner is extremely important in the control of new energy vehicles.
The driving control mechanism limits the movement of the transmission rod 11, the observation square pipe 3 closes the valve core, gas is injected into the observation square pipe 3 through the driving mechanism, liquid level difference, namely high left and low right, occurs in liquid inside the observation square pipe 3, the gas tightness of the pilot valve 2 is detected by observing the change of the liquid level, if the liquid level change occurs, namely the gas tightness of the closing performance of the pilot valve 2 is abnormal, otherwise, the closing performance of the pilot valve 2 is normal.
Further, examine mechanism in advance including dead slot 12, dead slot 12 sets up in the inside of bottom plate 1, the air inlet of pilot valve 2 and the inside of second pipeline 6 junction are located pilot valve 2, the inside of pilot valve 2 is seal space, connecting groove 14 has still been seted up to the outer wall of bottom plate 1, dead slot 12 can communicate with the outside through connecting groove 14, the port department intercommunication of connecting groove 14 has third pipeline 13, third pipeline 13 is the transparent pipeline, the inner wall fixedly connected with mounting panel 17 of third pipeline 13, a plurality of air vents have been seted up in the top of mounting panel 17 through, a plurality of foam balls 18 have been placed at the top of mounting panel 17, the top of mounting panel 17 still communicates there is balloon 9.
When the driving mechanism injects gas into the observing square tube 3 for detection, if the liquid level changes, the air tightness of the closing performance of the pilot valve 2 is abnormal, otherwise, the closing performance of the pilot valve 2 is normal
When the liquid level does not change for a long time, it indicates that no abnormal condition exists at the joint of the air inlet of the pilot valve 2 and the second pipeline 6, and it can also indicate that the closing performance of the pilot valve 2 is normal.
If the liquid level changes, there may be two situations, one of which may be that the closing performance of the pilot valve 2 is abnormal, and the other may be that the connection between the air inlet of the pilot valve 2 and the second pipeline 6 is abnormal, and in the extreme, both of which may be abnormal.
Therefore, before use, the joint of the air inlet of the pilot valve 2 and the second pipeline 6 is detected, and the displacement of the transmission rod 11 is limited through the locking mechanism.
The inside of the square observation tube 3 is pumped by driving, so that a sealed space formed by the square observation tube 3, the second pipeline 6 and the pilot valve 2 forms negative pressure, at the moment, the change of the liquid level is observed, if the liquid level difference is gradually reduced, the negative pressure disappears, namely the connection between the air inlet of the pilot valve 2 and the second pipeline 6 is abnormal, otherwise, the connection between the air inlet of the pilot valve 2 and the second pipeline 6 is normal.
When the observation square tube 3 is filled with gas, the balloon 9 is expanded or the foam ball 18 floats, which also indicates that the connection between the gas inlet of the pilot valve 2 and the second pipe 6 is abnormal.
Further, the inner top of the other port of the observation square tube 3 is fixedly connected with a telescopic rod 19, the output end of the telescopic rod 19 is fixedly connected with a first piston plate 21, the outer wall of the first piston plate 21 is vertically connected with the inner wall of the observation square tube 3 in a sliding manner, a spring 20 is fixedly connected between the top of the observation square tube 3 and the top of the first piston plate 21, and the spring 20 is sleeved on the outer wall of the telescopic rod 19.
As shown in fig. 6, this pressurizing mechanism can increase the detection efficiency by moving the first piston plate 21 upward to press the spring 20 in the process of changing the liquid level difference to the upper left and lower right when injecting gas into the observation side tube 3, and by this time, the space pressure between the left pressure surface and the lower side of the first piston plate 21 becomes higher than the atmospheric pressure.
Further, control mechanism is including fixing the installation riser 8 at bottom plate 1 top, rotatable transmission shaft 10 has run through to the outer wall of installation riser 8, the outer wall fixedly connected with pick-up plate 7 of transmission shaft 10, the outer wall of pick-up plate 7 forms conflict contact with the tip of transfer line 11, the outer wall fixedly connected with gear 24 of transmission shaft 10, the outer wall that is located gear 24 below installation riser 8 still rotates and is connected with worm 28, worm 28 is connected with gear 24 meshing, the stroke of transfer line 11 is confirmed through the turned angle of testing gear 24.
When the airtightness for detecting the closing performance of the pilot valve 2 is normal, gas is injected into the observation square tube 3, so that the liquid level difference occurs on the liquid level, namely, the liquid level is high at the left and low at the right, the worm 28 can be rotated, the first gear 24 can be rotated, the transmission shaft 10 and the detection plate 7 can be rotated, the transmission rod 11 can be gradually displaced towards the detection plate 7 under the driving of the reset spring, when the liquid level changes, namely, the air inlet of the pilot valve 2 is communicated with the inside of the valve body of the pilot valve 2, the rotation angle of the first gear 24 is judged at the moment, the stroke of the transmission rod 11 is recorded, the comparison with a normal value is carried out, when the stroke is within a controllable range, namely, the opening stroke of the valve rod is normal, and otherwise, the opening stroke of the valve rod is abnormal.
Air can be pumped into the observation square tube 3, so that the liquid level difference, namely, the left side is low and the right side is high, and whether the opening stroke of the valve rod is normal or not can be judged.
Further, the outer wall of the installation vertical plate 8 is further rotatably connected with a second gear 26, the second gear 26 is meshed with a first gear 24 and is connected with a mounting disc 27, the outer wall of the installation vertical plate 8, close to the second gear 26, is fixedly connected with a mounting disc 27, circular scales are marked on the mounting disc 27, the outer wall of the second gear 26 is fixedly connected with a pointer 25, the pointer 25 coincides with the radial line of the second gear 26, and the transmission ratio of the second gear 26 to the first gear 24 is larger than one.
Through the cooperation of the second gear 26 and the first gear 24, the rotation angle of the second gear 26 can be enlarged, and meanwhile, the mounting disc 27 and the pointer 25 are added, so that the judgment accuracy is improved.
Further, actuating mechanism includes piston box 5, piston box 5 fixed connection is at the top of bottom plate 1, sliding connection has second piston plate 23 from top to bottom on the inner wall of piston box 5, the top fixed mounting of piston box 5 has cylinder 15, the output fixedly connected with connecting rod 22 of cylinder 15, connecting rod 22 run through the top of piston box 5 and with the top fixed connection of second piston plate 23, the inner wall intercommunication of piston box 5 has one-way air inlet, the outer wall intercommunication of piston box 5 has first pipeline 4, the other end and the observation side pipe 3 intercommunication of first pipeline 4, the inside of first pipeline 4 is provided with the inside check valve of flow direction observation side pipe 3.
A detection method of an intelligent detection device of a valve positioner comprises the following steps: wherein, the first step: the driving control mechanism limits the movement of the transmission rod 11, so that the observation square pipe 3 closes the valve core, gas is injected into the observation square pipe 3 through the driving mechanism, liquid level difference, namely left-high and right-low, occurs in liquid inside the observation square pipe 3, the air tightness of the pilot valve 2 is detected by observing the change of the liquid level, if the liquid level change occurs, namely the air tightness of the closing performance of the pilot valve 2 is abnormal, otherwise, the closing performance of the pilot valve 2 is normal;
step two: the inside of the square observation tube 3 is exhausted through the driving mechanism, when the liquid level difference appears and the left bottom is high, the exhausting is stopped at the moment, the square observation tube 3, the second pipeline 6 and the pilot valve 2 form a sealed space to form negative pressure, at the moment, the change of the liquid level is observed, if the liquid level difference is gradually reduced, the negative pressure disappears, namely the abnormity of the connection position of the air inlet of the pilot valve 2 and the second pipeline 6 is explained, otherwise, the connection position of the air inlet of the pilot valve 2 and the second pipeline 6 is normal.
Further, in the first step, when the gas is injected into the observation square tube 3, the balloon 9 is expanded or the foam ball 18 floats, indicating that the connection between the gas inlet of the pilot valve 2 and the second pipe 6 is abnormal.
The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an intellectual detection system device of valve positioner, includes bottom plate (1) and pilot valve (2), wherein, pilot valve (2) fixed mounting is at the top of bottom plate (1), tip fixedly connected with transfer line (11), its characterized in that of pilot valve (2) are worn out to the valve rod of pilot valve (2): the air inlet of the pilot valve (2) is communicated with a detection mechanism, the detection mechanism comprises an observation square pipe (3), the observation square pipe (3) is installed at the top of the bottom plate (1), a second pipeline (6) is communicated between a specific position of the observation square pipe (3) and the air inlet of the pilot valve (2), liquid is stored inside the observation square pipe (3), the observation square pipe (3) is of a U-shaped structure, a port of the observation square pipe (3) is closed, one port of the observation square pipe (3) is communicated with a driving mechanism for injecting and exhausting air into the observation square pipe (3), the top of the bottom plate (1) is further provided with a control mechanism for limiting the displacement of the transmission rod (11), and the air inlet detection mechanism further comprises a pre-checking mechanism for detecting the connection air tightness between the air inlet of the pilot valve (2) and the detection mechanism.
2. The intelligent detection device of the valve positioner of claim 1, wherein: the preliminary examination mechanism comprises an empty groove (12), the empty groove (12) is formed in a bottom plate (1), the joint of an air inlet of the pilot valve (2) and a second pipeline (6) is located in the pilot valve (2), the inside of the pilot valve (2) is a sealed space, a connecting groove (14) is further formed in the outer wall of the bottom plate (1), the empty groove (12) can be communicated with the outside through the connecting groove (14), a third pipeline (13) is communicated with a port of the connecting groove (14), a mounting plate (17) is fixedly connected to the inner wall of the third pipeline (13), a plurality of vent holes are formed in the top of the mounting plate (17) in a penetrating mode, a plurality of foam balls (18) are placed on the top of the mounting plate (17), and balloons (9) are further communicated with the top of the mounting plate (17).
3. The intelligent detection device of the valve positioner of claim 1, wherein: the utility model discloses an observation side's pipe, including the interior top fixedly connected with telescopic link (19) of another port of observation side's pipe (3), the first piston plate of output fixedly connected with (21) of telescopic link (19), sliding connection about the outer wall of first piston plate (21) and the inner wall of observation side's pipe (3), fixedly connected with spring (20) between the top of observation side's pipe (3) and first piston plate (21), the outer wall of telescopic link (19) is established in spring (20) cover.
4. The intelligent detection device of the valve positioner according to claim 2 or 3, wherein: the control mechanism comprises an installation vertical plate (8) fixed to the top of the bottom plate (1), a rotatable transmission shaft (10) penetrates through the outer wall of the installation vertical plate (8), a detection plate (7) is fixedly connected to the outer wall of the transmission shaft (10), the outer wall of the detection plate (7) is in contact with the end portion of the transmission rod (11) in a collision mode, a first gear (24) is fixedly connected to the outer wall of the transmission shaft (10) and located below the first gear (24), a worm (28) is further connected to the outer wall of the installation vertical plate (8) in a rotating mode, the worm (28) is meshed with the first gear (24) and is connected with the first gear (24), and the stroke of the transmission rod (11) is determined through testing of the rotating angle of the first gear (24).
5. The intelligent detection device of the valve positioner of claim 4, wherein: the outer wall of installation riser (8) still rotates and is connected with gear two (26), gear two (26) are connected with gear (24) meshing, installation riser (8) are close to outer wall fixedly connected with mounting disc (27) of gear two (26), circular scale has been carved with on mounting disc (27), outer wall fixedly connected with pointer (25) of gear two (26), the coincidence of radial line of pointer (25) and gear two (26), the drive ratio of gear two (26) and gear (24) is greater than one.
6. The intelligent detection device of the valve positioner of claim 1, wherein: actuating mechanism includes piston box (5), piston box (5) fixed connection is at the top of bottom plate (1), sliding connection has second piston board (23) about the inner wall of piston box (5), the top fixed mounting of piston box (5) has cylinder (15), the output fixedly connected with connecting rod (22) of cylinder (15), connecting rod (22) run through the top of piston box (5) and with the top fixed connection of second piston board (23), the inner wall intercommunication of piston box (5) has one-way air inlet, the outer wall intercommunication of piston box (5) has first pipeline (4), the other end and the observation side pipe (3) intercommunication of first pipeline (4), the inside of first pipeline (4) is provided with the check valve that flows to observation side pipe (3) inside.
7. The detection method of the intelligent detection device of the valve positioner according to claim 2, wherein: the method comprises the following steps: wherein, the first step: the driving control mechanism limits the movement of the transmission rod (11), so that the observation square pipe (3) closes the valve core, gas is injected into the observation square pipe (3) through the driving mechanism, the liquid level difference, namely the height from left to right, of the liquid in the observation square pipe (3) is caused, the air tightness of the pilot valve (2) is detected by observing the change of the liquid level, if the liquid level change occurs, the air tightness of the closing performance of the pilot valve (2) is abnormal, otherwise, the closing performance of the pilot valve (2) is normal;
step two: the inside of the observation square pipe (3) is pumped through the driving mechanism, when the liquid level difference appears, the air pumping is stopped at the moment, the observation square pipe (3), the second pipeline (6) and the pilot valve (2) form a sealed space to form negative pressure, at the moment, the change of the liquid level is observed, if the liquid level difference is gradually reduced, the negative pressure disappears, namely, the abnormality of the joint of the air inlet of the pilot valve (2) and the second pipeline (6) is explained, otherwise, the joint of the air inlet of the pilot valve (2) and the second pipeline (6) is normal.
8. The detection method of the intelligent detection device of the valve positioner according to claim 7, wherein: in the first step, when the observation square pipe (3) is inflated, the balloon (9) is expanded or the foam ball (18) floats, and the abnormality of the connection between the air inlet of the pilot valve (2) and the second pipeline (6) is indicated.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004302709A (en) * | 2003-03-31 | 2004-10-28 | Hitachi Ltd | Maintenance management method for valve and support system therefor |
| CN101813575A (en) * | 2010-05-18 | 2010-08-25 | 卓旦春 | Bending resistance test device for valve |
| CN101832880A (en) * | 2010-05-10 | 2010-09-15 | 玉环县清港液压机械厂 | Locating device in constant temperature water mixing valve testing machine |
| CN103134667A (en) * | 2011-11-24 | 2013-06-05 | 宝山钢铁股份有限公司 | Detecting device and detecting method of pilot valve for valve positioner |
| CA3038323A1 (en) * | 2018-03-28 | 2019-09-28 | Ipeg, Inc. | System and method using telemetry to configure control systems for pneumatic conveying systems |
| CN210243092U (en) * | 2019-08-21 | 2020-04-03 | 滨海九通阀门有限公司 | Stop valve gas tightness high pressure detection device |
| CN212988730U (en) * | 2020-09-11 | 2021-04-16 | 西安航天自动化股份有限公司 | Ball valve air tightness testing device |
| CN112834125A (en) * | 2020-12-31 | 2021-05-25 | 深圳市磐锋精密技术有限公司 | Pressure sensor sealing ring air tightness detection device and detection method |
-
2021
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004302709A (en) * | 2003-03-31 | 2004-10-28 | Hitachi Ltd | Maintenance management method for valve and support system therefor |
| CN101832880A (en) * | 2010-05-10 | 2010-09-15 | 玉环县清港液压机械厂 | Locating device in constant temperature water mixing valve testing machine |
| CN101813575A (en) * | 2010-05-18 | 2010-08-25 | 卓旦春 | Bending resistance test device for valve |
| CN103134667A (en) * | 2011-11-24 | 2013-06-05 | 宝山钢铁股份有限公司 | Detecting device and detecting method of pilot valve for valve positioner |
| CA3038323A1 (en) * | 2018-03-28 | 2019-09-28 | Ipeg, Inc. | System and method using telemetry to configure control systems for pneumatic conveying systems |
| CN210243092U (en) * | 2019-08-21 | 2020-04-03 | 滨海九通阀门有限公司 | Stop valve gas tightness high pressure detection device |
| CN212988730U (en) * | 2020-09-11 | 2021-04-16 | 西安航天自动化股份有限公司 | Ball valve air tightness testing device |
| CN112834125A (en) * | 2020-12-31 | 2021-05-25 | 深圳市磐锋精密技术有限公司 | Pressure sensor sealing ring air tightness detection device and detection method |
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