CN220060736U - Intelligent pneumatic positioner - Google Patents
Intelligent pneumatic positioner Download PDFInfo
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- CN220060736U CN220060736U CN202321544329.5U CN202321544329U CN220060736U CN 220060736 U CN220060736 U CN 220060736U CN 202321544329 U CN202321544329 U CN 202321544329U CN 220060736 U CN220060736 U CN 220060736U
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- 238000005192 partition Methods 0.000 claims description 7
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model provides an intelligent pneumatic positioner which comprises an air supply source, a main valve group, an auxiliary valve group, an air cylinder, a control processing unit and a protection unit, wherein one end of the main valve group and one end of the auxiliary valve group are connected with the air supply source, the other end of the main valve group and the auxiliary valve group are connected with the air cylinder, the control processing unit is connected with the main valve group and the auxiliary valve group and is used for receiving a valve group control instruction and controlling the on-off of the main valve group and the auxiliary valve group, the protection unit is connected with the main valve group and the auxiliary valve group in parallel, and the protection unit is used for protecting a control circuit of the control processing unit for controlling the main valve group and the auxiliary valve group; the main valve group and the auxiliary valve group comprise three-position five-way reversing valves and high-frequency electromagnetic valve units. The parallel of multiple gas paths is realized, the on-line fault maintenance is supported, and meanwhile, the pneumatic circuit is protected.
Description
Technical Field
The utility model relates to the technical field of pneumatic positioners, in particular to an intelligent pneumatic positioner.
Background
The pneumatic positioner is one of important accessories and accessories of the pneumatic regulating valve and plays a role in positioning the valve. The pneumatic positioner is a basic execution component in the field of process control, and has large-scale application in the fields of electric power, petrochemical industry, energy, water treatment and papermaking.
However, the pneumatic positioner in China has the following defects that the pneumatic positioner is poor in pollution resistance, short in service life and easy to fail due to the fact that the service environment of the pneumatic positioner is severe, oil-containing water-containing dust-containing compressed air and the like, and meanwhile, the pneumatic loop of the pneumatic positioner is complex, when the pneumatic loop fails, online replacement cannot be realized, replacement can only be performed after the pneumatic positioner is stopped, and maintenance is inconvenient.
Disclosure of Invention
The utility model aims to provide an intelligent pneumatic positioner, which solves the problems that when the pneumatic positioner fails, the stability of pneumatic adjustment is affected, on-line replacement cannot be realized, and maintenance is inconvenient, realizes multi-channel isolation of the pneumatic positioner, supports on-line maintenance, and ensures the stable operation of the pneumatic positioner.
The utility model provides an intelligent pneumatic positioner which comprises an air supply source, a main valve group, an auxiliary valve group, an air cylinder, a control processing unit and a protection unit, wherein one end of the main valve group and one end of the auxiliary valve group are connected with the air supply source, the other end of the main valve group and the auxiliary valve group are connected with the air cylinder, the control processing unit is connected with the main valve group and the auxiliary valve group and is used for receiving a valve group control instruction and controlling the on-off of the main valve group and the auxiliary valve group, the protection unit is connected with the main valve group and the auxiliary valve group in parallel, and the protection unit is used for protecting a control circuit of the control processing unit for controlling the main valve group and the auxiliary valve group;
the main valve group and the auxiliary valve group comprise three-position five-way reversing valves and a high-frequency electromagnetic valve unit, the three-position five-way reversing valves are connected with the air supply source, one end of the high-frequency electromagnetic valve unit is connected with the three-position five-way reversing valves, and the other end of the high-frequency electromagnetic valve unit is connected with the air cylinder.
In some embodiments of the utility model, the type of cylinder is modified, the cylinder is a double-acting cylinder, the cylinder comprises a first chamber, a second chamber and a valve rod, the first chamber is separated from the second chamber by a partition, and one end of the valve rod is arranged in the second chamber and connected with the partition.
In some embodiments of the present utility model, the high frequency solenoid valve unit is improved to ensure the response speed and control accuracy of the valve, and includes a first high frequency solenoid valve group and a second high frequency solenoid valve group including a small high frequency solenoid valve, a medium high frequency solenoid valve, and a large high frequency solenoid valve, which are arranged in parallel.
In some embodiments of the present utility model, the connection manner of the high-frequency electromagnetic valve with the first chamber and the second chamber is improved, so that the cylinder is controlled by the high-frequency electromagnetic valve, a first high-frequency electromagnetic valve group in the main valve group and a first high-frequency electromagnetic valve group in the auxiliary valve group are connected with the first chamber, and a second high-frequency electromagnetic valve group in the main valve group and a second high-frequency electromagnetic valve group in the auxiliary valve group are connected with the second chamber.
In some embodiments of the present utility model, the CV values of the large and small high frequency solenoid valves are improved, the CV value of the large high frequency solenoid valve being 10 times the CV value of the small high frequency solenoid valve.
In some embodiments of the utility model, the arrangement in the first and second chambers is modified so as to facilitate detection of the pressure in the cylinder, pressure sensors being arranged in the first and second chambers, the pressure sensors being connected to the control processing unit, the pressure sensors being arranged to detect the pressure in the first and second chambers in real time.
In some embodiments of the present utility model, the protection unit is modified so as to absorb the surge and the higher harmonic, and the protection unit is a freewheel diode for absorbing the surge and the higher harmonic generated at the instant of the high-speed operation of the high-frequency electromagnetic valve to protect the control line from being burned.
In some embodiments of the utility model, the control processing unit is modified so as to facilitate viewing and adjusting the operating parameters of the intelligent pneumatic positioner, and is connected with a touch screen for implementing interactive operation and observing fault cues.
In some embodiments of the present utility model, the intake of the air supply source is modified such that the intake air is purified, the intelligent pneumatic positioner further comprises a filter pressure reducing valve disposed between the air supply source and the main and auxiliary valve sets, the filter pressure reducing valve being configured to regulate the pressure within the air supply line.
The utility model provides an intelligent pneumatic positioner which comprises an air supply source, a main valve group, an auxiliary valve group, an air cylinder, a control processing unit and a protection unit, wherein one end of the main valve group and one end of the auxiliary valve group are connected with the air supply source, the other end of the main valve group and the auxiliary valve group are connected with the air cylinder, the control processing unit is connected with the main valve group and the auxiliary valve group and is used for receiving a valve group control instruction and controlling the on-off of the main valve group and the auxiliary valve group, the protection unit is connected with the main valve group and the auxiliary valve group in parallel, and the protection unit is used for protecting a control circuit of the control processing unit for controlling the main valve group and the auxiliary valve group; the main valve group and the auxiliary valve group comprise three-position five-way reversing valves and a high-frequency electromagnetic valve unit, the three-position five-way reversing valves are connected with the air supply source, one end of the high-frequency electromagnetic valve unit is connected with the three-position five-way reversing valves, and the other end of the high-frequency electromagnetic valve unit is connected with the air cylinder.
According to the utility model, the control processing unit is used for controlling the three-position five-way reversing valve and the high-frequency electromagnetic valve in the main valve group and the auxiliary valve group, so that the response speed and the control precision of the valve are ensured; meanwhile, a protection unit is arranged to protect the control lines of the main valve group and the auxiliary valve group controlled by the control processing unit, so that the high-frequency electromagnetic valve is prevented from surging and the high-order harmonic burning controller is prevented from controlling the output channel of the high-frequency electromagnetic valve at the moment of high-speed operation; the structure of the air channel is simplified, the construction cost is reduced, and the simple structure of the air channel and fewer air channel connectors ensure better air tightness, so that the using amount of compressed air can be obviously reduced; the intelligent pneumatic positioner is provided with a plurality of high-frequency electromagnetic valves in the main valve group and the auxiliary valve group, so that the intelligent pneumatic positioner is provided with a plurality of air passage channels, stable operation of the intelligent pneumatic positioner is ensured, and meanwhile, online replacement of fault components is realized.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an intelligent pneumatic positioner according to the present utility model;
FIG. 2 is a schematic diagram of an intelligent pneumatic positioner according to the present utility model.
Reference numerals
1. A gas supply source; 11. a filter pressure reducing valve; 2. a main valve group; 3. an auxiliary valve group; 4. a cylinder; 41. a first chamber; 42. a second chamber; 43. a piston rod; 44. a partition plate; 45. a pressure sensor; 5. a control processing unit; 51. a touch screen; 6. three-position five-way reversing valve; 71. a small high frequency solenoid valve; 72. a medium-high frequency electromagnetic valve; 73. a large high frequency solenoid valve; 8. a first high-frequency electromagnetic valve group; 9. the second high-frequency electromagnetic valve group; 10. and a protection unit.
Detailed Description
The technical scheme of the utility model is further described below through the attached drawings and the embodiments.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless otherwise defined, 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 utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, means, components, and/or combinations thereof, but do not exclude other elements or items. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely relational terms determined to facilitate description of the structural relationships of the various components or elements of the utility model, and are not meant to be limiting of the utility model. Terms such as "fixedly attached," "connected," "coupled," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present utility model can be determined according to circumstances by a person skilled in the relevant art or the art, and is not to be construed as limiting the present utility model.
Examples
At present, the domestic pneumatic positioner has the following defects that the pneumatic positioner is poor in pollution resistance, short in service life and easy to fail because of severe use environment, oil-containing water-containing dust-containing compressed air and the like, and the pneumatic positioner is easy to fail, so that the pneumatic adjustment stability is influenced.
In order to solve the above problems, the present utility model provides an intelligent pneumatic positioner, as shown in fig. 1 and 2, which comprises a gas supply source 1, a main valve group 2, an auxiliary valve group 3, a cylinder 4, a control processing unit 5 and a protection unit 10, wherein one end of the main valve group 2 and one end of the auxiliary valve group 3 are connected with the gas supply source 1, the other end of the main valve group is connected with the cylinder 4, the control processing unit 5 is connected with the main valve group 2 and the auxiliary valve group 3, and is used for receiving a valve group control instruction and controlling the on-off of the main valve group 2 and the auxiliary valve group 3, the protection unit 10 is connected with the main valve group 2 and the auxiliary valve group 3 in parallel, and the protection unit 10 is used for protecting a control line of the control processing unit for controlling the main valve group 2 and the auxiliary valve group 3;
the main valve group 2 and the auxiliary valve group 3 comprise three-position five-way reversing valves 6 and a high-frequency electromagnetic valve unit, the three-position five-way reversing valves 6 are connected with the air supply source 1, one end of the high-frequency electromagnetic valve unit is connected with the three-position five-way reversing valves 6, and the other end of the high-frequency electromagnetic valve unit is connected with the air cylinder 4.
In some embodiments of the present utility model, the type of the cylinder 4 is improved, the cylinder 4 is a double-acting cylinder, the cylinder includes a first chamber 41, a second chamber 42 and a piston rod 43, the first chamber 41 is separated from the second chamber 42 by a partition 44, and one end of the piston rod 43 is disposed in the second chamber 42 and connected to the partition 44.
In some embodiments of the present utility model, the high frequency solenoid valve unit is improved to ensure the response speed and control accuracy of the valve, the high frequency solenoid valve unit includes a first high frequency solenoid valve group 8 and a second high frequency solenoid valve group 9, the first high frequency solenoid valve group 8 and the second high frequency solenoid valve group 9 include a small high frequency solenoid valve 71, a medium high frequency solenoid valve 72 and a large high frequency solenoid valve 73, and the high frequency solenoid valves are arranged in parallel.
In some embodiments of the present utility model, the connection between the high frequency solenoid valve and the first and second chambers 41 and 42 is improved, so that the cylinder 4 is controlled by the high frequency solenoid valve, the first high frequency solenoid valve group 8 in the main valve group 2 is connected with the first chamber 41 and the first high frequency solenoid valve group 8 in the auxiliary valve group 3, and the second high frequency solenoid valve group 9 in the main valve group 2 is connected with the second high frequency solenoid valve group 9 in the auxiliary valve group 3 and the second chamber 42.
In some embodiments of the present utility model, the CV values of the large high frequency solenoid valve 73 and the small high frequency solenoid valve 71 are improved, the CV value of the large high frequency solenoid valve 73 being 10 times the CV value of the small high frequency solenoid valve 71.
In this embodiment, the large and small high-frequency electromagnetic valves adopt different CV values, and an appropriate high-frequency electromagnetic valve can be selected according to different cylinder pressures to perform grading treatment.
In some embodiments of the present utility model, the arrangement in the first chamber 41 and the second chamber 42 is improved so as to facilitate the detection of the pressure in the cylinder, a pressure sensor 45 is arranged in the first chamber 41 and the second chamber 42, the pressure sensor 45 is connected to the control processing unit 5, and the pressure sensor 45 is used for detecting the pressure in the first chamber 41 and the second chamber 42 in real time.
In this embodiment, the pressure sensor 45 is used to detect the pressures in the first chamber 41 and the second chamber 42 in real time, so that the intelligent pneumatic positioner has a cylinder torque output detection protection function.
In some embodiments of the present utility model, the protection unit 10 is modified so as to absorb the surge and the higher harmonics, and the protection unit 10 is a freewheeling diode for absorbing the surge and the higher harmonics generated by the high-frequency electromagnetic valve at the instant of high-speed operation so as to protect the control line from being burned.
In this embodiment, the high-frequency electromagnetic valve is driven by the inductive coil, and a large amount of surges and higher harmonics are brought to the high-frequency electromagnetic valve at the instant of high-speed operation, so that the controller can be burnt to control the output channel of the high-frequency electromagnetic valve in a short time, and the freewheeling diode is used for protection, so that surges and higher harmonics generated by the high-frequency electromagnetic valve at the instant of high-speed operation can be absorbed to protect the control circuit from being burnt.
In some embodiments of the present utility model, the control processing unit 5 is modified so as to facilitate viewing and adjusting of the operating parameters of the intelligent pneumatic positioner, the control processing unit 5 is connected to a touch screen 51, and the touch screen 51 is used to implement interactive operation and observe fault cues.
In this embodiment, the touch screen 51 is used for controlling and adjusting, which is more ergonomic, and the full Chinese interface and the fault prompting function can make debugging and maintenance simpler.
In some embodiments of the present utility model, the air supply 1 is improved so as to facilitate the purification of the air supplied, and the intelligent pneumatic positioner further comprises a filter pressure reducing valve 11, wherein the filter pressure reducing valve 11 is arranged between the air supply 1 and the main valve group 2 and the auxiliary valve group 3, and the filter pressure reducing valve 11 is used for adjusting the pressure in the air supply pipeline.
In this embodiment, the air source of the pneumatic positioner is from the compressed air of the air compression station, and a filtering and pressure reducing valve 11 is arranged in the front section of the air source inlet of the pneumatic positioner, so that the air source can be used for purifying the compressed air, and the air quantity entering the pneumatic positioner can be controlled.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting it, and although the present utility model has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the utility model can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the utility model.
Claims (9)
1. The intelligent pneumatic positioner is characterized by comprising a gas supply source, a main valve group, an auxiliary valve group, a cylinder, a control processing unit and a protection unit, wherein one end of the main valve group and one end of the auxiliary valve group are connected with the gas supply source, the other end of the main valve group and the other end of the auxiliary valve group are connected with the cylinder, the control processing unit is connected with the main valve group and the auxiliary valve group and is used for receiving a valve group control instruction and controlling the on-off of the main valve group and the auxiliary valve group, the protection unit is connected with the main valve group and the auxiliary valve group in parallel, and the protection unit is used for protecting a control circuit of the control processing unit for controlling the main valve group and the auxiliary valve group;
the main valve group and the auxiliary valve group comprise three-position five-way reversing valves and a high-frequency electromagnetic valve unit, the three-position five-way reversing valves are connected with the air supply source, one end of the high-frequency electromagnetic valve unit is connected with the three-position five-way reversing valves, and the other end of the high-frequency electromagnetic valve unit is connected with the air cylinder.
2. The intelligent pneumatic positioner according to claim 1, wherein the cylinder is a double-acting cylinder, the cylinder comprises a first chamber, a second chamber and a valve rod, the first chamber is separated from the second chamber by a partition, and one end of the valve rod is disposed in the second chamber and connected with the partition.
3. The intelligent pneumatic positioner according to claim 2, wherein the high-frequency solenoid valve unit comprises a first high-frequency solenoid valve block and a second high-frequency solenoid valve block, the first high-frequency solenoid valve block and the second high-frequency solenoid valve block comprise a small high-frequency solenoid valve, a medium high-frequency solenoid valve and a large high-frequency solenoid valve, and the high-frequency solenoid valves are arranged in parallel.
4. An intelligent pneumatic positioner according to claim 3, wherein a first high-frequency electromagnetic valve block of the main valve block and a first high-frequency electromagnetic valve block of the auxiliary valve block are connected to the first chamber, and a second high-frequency electromagnetic valve block of the main valve block and a second high-frequency electromagnetic valve block of the auxiliary valve block are connected to the second chamber.
5. An intelligent pneumatic positioner according to claim 3, wherein the CV value of the large high frequency solenoid valve is 10 times the CV value of the small high frequency solenoid valve.
6. An intelligent pneumatic positioner according to claim 3, wherein pressure sensors are provided in the first and second chambers, the pressure sensors being connected to the control processing unit, the pressure sensors being arranged to detect the pressure in the first and second chambers in real time.
7. The intelligent pneumatic positioner according to claim 1, wherein the protection unit is a freewheeling diode for absorbing surges and higher harmonics generated at the instant of high-speed operation of the high-frequency solenoid valve to protect the control line from being burned.
8. An intelligent pneumatic positioner according to claim 1, wherein the control processing unit is connected to a touch screen for interactive operation and observation of fault cues.
9. The intelligent pneumatic positioner according to claim 1, further comprising a filter pressure reducing valve disposed between the supply air source and the main and auxiliary valve sets, the filter pressure reducing valve being adapted to regulate the pressure within the air source line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321544329.5U CN220060736U (en) | 2023-06-16 | 2023-06-16 | Intelligent pneumatic positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321544329.5U CN220060736U (en) | 2023-06-16 | 2023-06-16 | Intelligent pneumatic positioner |
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| Publication Number | Publication Date |
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| CN220060736U true CN220060736U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321544329.5U Active CN220060736U (en) | 2023-06-16 | 2023-06-16 | Intelligent pneumatic positioner |
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| CN (1) | CN220060736U (en) |
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2023
- 2023-06-16 CN CN202321544329.5U patent/CN220060736U/en active Active
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