CN112945164A - Rapid calibration device for ceramic piston rod openness instrument and use method - Google Patents
Rapid calibration device for ceramic piston rod openness instrument and use method Download PDFInfo
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- CN112945164A CN112945164A CN202110303835.4A CN202110303835A CN112945164A CN 112945164 A CN112945164 A CN 112945164A CN 202110303835 A CN202110303835 A CN 202110303835A CN 112945164 A CN112945164 A CN 112945164A
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- piston rod
- signaling
- instrument
- openness
- oil cylinder
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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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Abstract
The invention discloses a rapid calibration device for a ceramic piston rod openness instrument, which comprises a signaling board and a support, a signaling device and a support, a logic program processing device, an interaction device and a calibration solution. The signaling board bracket is sleeved on the outer surface of the movable end of the piston rod of the oil cylinder; the surface of the signaling board bracket is connected with a sensing signaling board which is matched with the signaling device. The device solves the problem that the oil cylinder needs to be operated to a preset position when the piston rod openness instrument is reset, and is easily limited by field working conditions, and has the characteristics of simple structure, convenience and quickness in use, stability and reliability, only needing to complete the preparation measurement calculation in the early stage, and completing the accurate calibration of data by one key under the condition of meeting the calibration, saving the work of frequently measuring the extension length of the piston rod on site and calculating, and avoiding the operation risk that the piston rod needs to be completely retracted to the oil cylinder to reset the openness instrument.
Description
Technical Field
The invention belongs to the technical field of instrument maintenance, and particularly relates to a rapid calibration device for a ceramic piston rod openness instrument and a use method.
Background
At present, hydraulic cylinders are generally adopted for opening and closing water conservancy and hydropower steel gates, most hydraulic cylinders are required to be corrosion-resistant and wear-resistant due to the fact that field operation conditions are considered, and are not easily affected by the external environment, therefore, more hydraulic cylinders are in a ceramic piston rod type, a CIMS or CPMS stroke detection device is adopted for corresponding opening degree detection, the openness instrument is required to perform grooving before ceramic is sprayed on a piston rod, and the openness instrument calculates and determines the displacement of the piston rod by detecting a tooth groove on the piston rod. The openness meter is tightly attached to the piston rod, so that the openness meter has the advantage of being obviously free from the influence or interference of the external environment. The defects are obvious, the requirement on the installation attaching degree of the piston rod is high, when the openness meter detects that an acquisition element is abnormal (such as vibration of the operation of a hydraulic cylinder, stain on the element and the like), the operation calculation is likely to lose codes, the stroke calculation of the openness meter generates large deviation under the condition of daily accumulation, the control of the openness of the gate is inaccurate, and when double-cylinder or multi-cylinder control is adopted, the gate is even inclined to operate, and the operation risk is high.
Aiming at the defects, the zero clearing operation treatment is carried out on the openness instrument regularly at present, so that the openness instrument is recovered to the initial ideal working condition. However, the periodic zero clearing operation requires that the oil cylinder is operated to a preset fixed position, and generally requires that the piston rod is completely retracted to the end. When the gate is in service operation, for example, under the water retaining condition, the zero clearing operation condition is not available, so that great troubles are caused to the normal and stable operation of the gate and the maintenance of the openness meter of the ceramic piston rod.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rapid calibration device of a ceramic piston rod openness instrument and a use method thereof, the device solves the problem that the ceramic piston rod openness instrument can be operated only by operating an oil cylinder to a preset position when the piston rod openness instrument is reset, and is easily limited by field working conditions, and has the characteristics of simple structure, convenience and quickness in use, stability and reliability, accurate calibration of data can be completed by one key only by completing measurement and calculation in the early stage, the work of frequently measuring the extension length of a piston rod and calculating in the field is omitted, and the operation risk that the ceramic piston rod openness instrument can be reset only by completely retracting the piston rod to the oil cylinder is avoided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a quick calibration device for a ceramic piston rod openness instrument comprises a signaling plate support, wherein the signaling plate support is sleeved on the outer surface of a movable end of an oil cylinder piston rod; the surface of the signaling board bracket is connected with a sensing signaling board which is matched with the signaling device.
Further, the inductive signaling plate is preferably flat and narrow to ensure the accuracy of position sensing.
Preferably, the signaling device comprises a switch bracket, and the switch bracket is sleeved on the outer surface of the end head of the oil cylinder fixing cylinder body.
Preferably, the outer surface of the switch bracket is connected with a proximity switch; the proximity switch is matched with the induction message sending board; the proximity switch magnetic induction surface is preferably narrow.
Preferably, the signaling plate support comprises an annular structure formed by connecting two arc-shaped plates through bolts; the switch bracket and the signaling board bracket have the same structure.
Preferably, the inductive signalling plate is perpendicular to the plane of the signalling plate support.
Preferably, the signal line of the proximity switch is electrically connected with the DI module of the logic program processing device.
Preferably, the logic program processing device is electrically connected with the control mechanism; the control mechanism comprises a local operation knob and an interactive terminal; the logic program processing device is arranged in a control cabinet for the operation of the field operation oil cylinder, and preferably selects an industrial control PLC.
Preferably, the interactive terminal is provided with a signal display allowing automatic calibration button and flag bit signaling; the interactive terminal is installed on a control cabinet for the action of the field operation oil cylinder, and preferably selects an industrial control touch screen.
Further, for single-cylinder, double-cylinder or multi-cylinder equipment, corresponding supports are respectively installed on each cylinder and each piston rod, and output code values of each openness instrument are respectively compensated through programming.
Furthermore, for the oil cylinder which cannot be opened by action, an induction signaling board bracket can be arranged on a civil building around the oil cylinder at the full-closed position of the equipment, and the other structures are not changed in installation and programming for calibration.
Preferably, the use method of the ceramic piston rod openness instrument rapid calibration device is characterized in that: the method comprises the following steps:
s1, debugging at the reference standard position: the piston rod of the oil cylinder is retracted until the induction signal transmitting plate enables the proximity switch to transmit signals, and the action is stopped; measuring the accurate length A of the exposed piston rod at the moment, and comparing the accurate length A with the length B of the exposed piston rod when the piston rod is completely retracted into the oil cylinder in the manufacturing drawing to obtain the accurate standard stroke code value M1= C- (A-B) of the signaling position piston rod openness instrument; wherein C is a code value when the opening instrument is cleared when the piston rod is completely retracted into the cylinder under normal conditions; the M1 code value is used as the standard travel of the signaling position and is solidified into the logic program processing device; the step is executed for the first time, and can not be executed any more subsequently;
s2, when the stroke of the opening instrument is found to be out of order during the operation of the oil cylinder, automatically calibrating the opening instrument; after the oil cylinder runs for a period of time, when obvious difference between the stop position of the oil cylinder and the historical stop position is found, the stroke value of the oil cylinder opening instrument is inaccurate, and the opening instrument needs to be calibrated;
s3, starting an operation knob on the operation site, and switching the operation mode to a maintenance mode;
s4, operating the oil cylinder to move to the induction message board to make the proximity switch send a message, and lighting the message signal display of the mark position on the interactive terminal;
s5, pressing down the button allowing automatic calibration through the interactive terminal, obtaining the difference value between the standard trip code value M1 and the trip code value WD [1] of the current position as a compensation value BCZ [1] and storing the compensation value BCZ [1] into the logic program processing device;
and S6, adding the compensation value BCZ [1] and the current position stroke code value WD [1] by the logic program processing device, and then assigning the value to WD [1] again to finish the stroke calibration of the opening instrument.
Further, the difference value of the compensation value BCZ [1] in S5 is obtained by taking the difference value between the current stop position historical standard value of the oil cylinder and the current display travel value as the compensation value BCZ [1 ].
The invention has the beneficial effects that:
the automatic calibration openness instrument device can finish accurate calibration of data by one key under the condition that calibration is met only after preliminary preparation measurement calculation is finished, the work of frequently measuring the extension length of a piston rod on site and calculating is omitted, and the operation risk that the openness instrument can be reset only when the piston rod is completely retracted to an oil cylinder is avoided;
2, the setting mode of the openness instrument calibration device can adapt to oil cylinders with different operation requirements on site; the adaptability is strong, the cost is low, the large amount of the product can be conveniently put into use on the existing equipment, and the product has good use value;
3, the mounting position of each support of the opening instrument calibration device does not have specific requirements, theoretically any position can be adopted, the mounting difficulty is low, and the influence of mechanical external force is not easy to cause;
4, when the device is automatically calibrated, the instruction requirements of the local operation knob and the interactive terminal need to be met at the same time, and the problem caused by misoperation is effectively avoided.
Drawings
FIG. 1 is a schematic view of the device body of the present invention in a particular use;
FIG. 2 is a schematic top view of the switch bracket of the present invention;
FIG. 3 is a schematic top view of a signaling board rack according to the present invention;
FIG. 4 is a schematic front view of a signaling board rack according to the present invention;
FIG. 5 is a flow chart of the operational control of the present invention;
FIG. 6 is a flow chart of the program control of the present invention;
FIG. 7 is a schematic diagram of an exemplary automatic calibration process of the present invention;
the reference numbers in the figures are: the device comprises an oil cylinder piston rod movable end 1, a signaling plate support 2, an oil cylinder fixed cylinder body end 3, a switch support 4, a proximity switch 5 and a sensing signaling plate 6.
Detailed Description
As shown in fig. 1 to 7, a fast calibration device for a ceramic piston rod openness instrument comprises a signaling plate bracket 2, wherein the signaling plate bracket 2 is sleeved on the outer surface of a movable end 1 of a piston rod of an oil cylinder; the surface of the signaling board bracket 2 is connected with a sensing signaling board 6 to match with the signaling device.
Further, the inductive signaling plate 6 is preferably flat and narrow to ensure accuracy in position sensing.
Preferably, the signaling device comprises a switch bracket 4, and the switch bracket 4 is sleeved on the outer surface of the end head 3 of the oil cylinder fixing cylinder body.
Preferably, the outer surface of the switch bracket 4 is connected with a proximity switch 5; the proximity switch 5 is matched with the induction signaling board 6; the magnetic induction surface of the proximity switch 5 is preferably narrow.
Preferably, the signaling plate support 2 comprises an annular structure formed by connecting two arc-shaped plates through bolts; the switch bracket 4 has the same structure as the signaling board bracket 2.
Preferably, the inductive signaling plate 6 is perpendicular to the plane of the signaling plate holder 2.
Preferably, the signal line of the proximity switch 5 is electrically connected to the DI module of the logic program processing device.
Preferably, the logic program processing device is electrically connected with the control mechanism; the control mechanism comprises a local operation knob and an interactive terminal; the logic program processing device is arranged in a control cabinet for the operation of the field operation oil cylinder, and preferably selects an industrial control PLC.
Preferably, the interactive terminal is provided with a signal display allowing automatic calibration button and flag bit signaling; the interactive terminal is installed on a control cabinet for the action of the field operation oil cylinder, and preferably selects an industrial control touch screen.
Further, for single-cylinder, double-cylinder or multi-cylinder equipment, corresponding supports are respectively installed on each cylinder and each piston rod, and output code values of each openness instrument are respectively compensated through programming.
Furthermore, for the oil cylinder which cannot be opened by action, the signaling board bracket 2 can be arranged on the civil building around the oil cylinder at the full-closed position of the equipment, and the other structures are not changed in installation and programming for calibration.
Preferably, the use method of the ceramic piston rod openness instrument rapid calibration device is characterized in that: the method comprises the following steps:
s1, debugging at the reference standard position: the piston rod of the oil cylinder is retracted until the induction signal transmitting plate 6 stops acting when the proximity switch 5 transmits signals; measuring the accurate length A of the exposed piston rod at the moment, and comparing the accurate length A with the length B of the exposed piston rod when the piston rod is completely retracted into the oil cylinder in the manufacturing drawing to obtain the accurate standard stroke code value M1= C- (A-B) of the signaling position piston rod openness instrument; wherein C is a code value when the opening instrument is cleared when the piston rod is completely retracted into the cylinder under normal conditions; the M1 code value is used as the standard travel of the signaling position and is solidified into the logic program processing device; the step is executed for the first time, and can not be executed any more subsequently;
s2, when the stroke of the opening instrument is found to be out of order during the operation of the oil cylinder, automatically calibrating the opening instrument; after the oil cylinder runs for a period of time, when obvious difference between the stop position of the oil cylinder and the historical stop position is found, the stroke value of the oil cylinder opening instrument is inaccurate, and the opening instrument needs to be calibrated;
s3, starting an operation knob on the operation site, and switching the operation mode to a maintenance mode;
s4, operating the oil cylinder to move to the induction signaling board 6 to make the proximity switch 5 signal, and the marker position signaling signal display on the interactive terminal is lightened;
s5, pressing down the button allowing automatic calibration through the interactive terminal, obtaining the difference value between the standard trip code value M1 and the trip code value WD [1] of the current position as a compensation value BCZ [1] and storing the compensation value BCZ [1] into the logic program processing device;
and S6, adding the compensation value BCZ [1] and the current position stroke code value WD [1] by the logic program processing device, and then assigning the value to WD [1] again to finish the stroke calibration of the opening instrument.
Furthermore, the difference value of the compensation value BCZ [1] in S5 is obtained by taking the difference value between the current stop position historical standard value of the oil cylinder and the current display travel value as the compensation value BCZ [1 ]; the current stall can be a flag bit or other common stalls with accurate historical records.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a quick calibration device of pottery piston rod aperture appearance which characterized in that: the device comprises a signaling plate bracket (2), wherein the signaling plate bracket (2) is sleeved on the outer surface of a movable end socket (1) of a piston rod of the oil cylinder; the surface of the signaling board bracket (2) is connected with an induction signaling board (6) which is matched with the signaling device.
2. The ceramic piston rod openness instrument rapid calibration device according to claim 1, characterized in that: the signaling device comprises a switch bracket (4), and the switch bracket (4) is sleeved on the outer surface of the end head (3) of the oil cylinder fixing cylinder body.
3. The ceramic piston rod openness instrument rapid calibration device according to claim 1, characterized in that: the outer surface of the switch bracket (4) is connected with a proximity switch (5); the proximity switch (5) is matched with the induction signaling board (6).
4. The ceramic piston rod openness instrument rapid calibration device according to claim 1, characterized in that: the signaling plate bracket (2) comprises an annular structure formed by connecting two arc plates through bolts; the switch bracket (4) and the signaling board bracket (2) have the same structure.
5. The ceramic piston rod openness instrument rapid calibration device according to claim 1, characterized in that: the induction signaling board (6) is vertical to the plane of the signaling board bracket (2).
6. The ceramic piston rod openness instrument rapid calibration device according to claim 1, characterized in that: and the signal wire of the proximity switch (5) is electrically connected with a DI module of the logic program processing device.
7. The ceramic piston rod openness instrument rapid calibration device according to claim 6, wherein: the logic program processing device is electrically connected with the control mechanism; the control mechanism comprises a local operation knob and an interactive terminal.
8. The ceramic piston rod openness instrument rapid calibration device according to claim 6, wherein: the interactive terminal is provided with a signal display allowing automatic calibration button and flag bit signaling.
9. The use method of the ceramic piston rod openness instrument quick calibration device according to claims 1-8, characterized in that: the method comprises the following steps:
s1, debugging at the reference standard position: the piston rod of the oil cylinder is retracted until the induction signaling plate (6) stops acting when the proximity switch (5) signals; measuring the accurate length A of the exposed piston rod at the moment, and comparing the accurate length A with the length B of the exposed piston rod when the piston rod is completely retracted into the oil cylinder in the manufacturing drawing to obtain the accurate standard stroke code value M1= C- (A-B) of the signaling position piston rod openness instrument; wherein C is a code value when the opening instrument is cleared when the piston rod is completely retracted into the cylinder under normal conditions; the M1 code value is used as the standard travel of the signaling position and is solidified into the logic program processing device; the step is executed for the first time, and can not be executed any more subsequently;
s2, when the stroke of the opening instrument is found to be out of order during the operation of the oil cylinder, automatically calibrating the opening instrument; after the oil cylinder runs for a period of time, when obvious difference between the stop position of the oil cylinder and the historical stop position is found, the stroke value of the oil cylinder opening instrument is inaccurate, and the opening instrument needs to be calibrated;
s3, starting an operation knob on the operation site, and switching the operation mode to a maintenance mode;
s4, operating the oil cylinder to move to the induction signaling board (6) to make the proximity switch (5) signal, and the marker position signaling signal display on the interactive terminal is lightened;
s5, pressing down the button allowing automatic calibration through the interactive terminal, obtaining the difference value between the standard trip code value M1 and the trip code value WD [1] of the current position as a compensation value BCZ [1] and storing the compensation value BCZ [1] into the logic program processing device;
and S6, adding the compensation value BCZ [1] and the current position stroke code value WD [1] by the logic program processing device, and then assigning the value to WD [1] again to finish the stroke calibration of the opening instrument.
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4742794A (en) * | 1986-09-08 | 1988-05-10 | Bennett Marine, Inc. | Trim tab indicator system |
| US4771866A (en) * | 1986-04-03 | 1988-09-20 | Enertrols, Inc. | Shock absorber with proximity switch |
| CN2411259Y (en) * | 1999-12-01 | 2000-12-20 | 杭州钢铁集团公司 | Device for detecting open-degree of blast furnace non-bell top stopping valve |
| CN202220774U (en) * | 2011-07-16 | 2012-05-16 | 三一重工股份有限公司 | Displacement detection device and oil cylinder with the same |
| CN202468547U (en) * | 2011-12-20 | 2012-10-03 | 中联重科股份有限公司 | Telescoping cylinder and stroke detection apparatus thereof |
| CN202592808U (en) * | 2012-05-14 | 2012-12-12 | 徐州压力机械有限公司 | Anti-rotation and stroke control device of ejection cylinder of hydraulic press |
| CN203298728U (en) * | 2013-05-22 | 2013-11-20 | 北京中冶设备研究设计总院有限公司 | Hydraulic cylinder displacement sensor precision calibrating device |
| CN103994127A (en) * | 2014-04-25 | 2014-08-20 | 北京航天发射技术研究所 | Oil cylinder linear movement redundancy detection device and control method thereof |
| CN204403044U (en) * | 2014-12-29 | 2015-06-17 | 劲旅环境科技有限公司 | Cylinder position detector |
| CN105673618A (en) * | 2016-04-06 | 2016-06-15 | 北京航天发射技术研究所 | Hydraulic cylinder in-place detection device based on magnetic induction transmission |
| CN205956113U (en) * | 2016-08-25 | 2017-02-15 | 浙江阿凡特精密设备制造有限公司 | But roll adjustment type area proximity switch hydro -cylinder |
| CN106678123A (en) * | 2015-11-10 | 2017-05-17 | 江苏金宏泰机电科技有限公司 | High-precision hydraulic telescopic rod |
| CN206627086U (en) * | 2017-04-07 | 2017-11-10 | 中国航空综合技术研究所 | A kind of stroke caliberating device for linear hydraulic cylinder |
| CN108663986A (en) * | 2018-07-23 | 2018-10-16 | 浙江九州治水科技股份有限公司 | A kind of lock group's remote scheduling system and its control method based on BS |
| CN108916158A (en) * | 2018-07-31 | 2018-11-30 | 烟台未来自动装备有限责任公司 | A kind of oil cylinder stroke Detection & Controling method based on hydraulic oil volume flow |
| CN208873022U (en) * | 2018-07-13 | 2019-05-17 | 北京新水源景科技股份有限公司 | The control system of observing and controlling one gate |
| CN110273891A (en) * | 2019-07-30 | 2019-09-24 | 安徽马钢张庄矿业有限责任公司 | A kind of stroke oil cylinder |
| CN111957915A (en) * | 2020-09-10 | 2020-11-20 | 一重集团大连工程技术有限公司 | Self-adaptive control device for side sealing plates of double-roller thin-strip continuous casting roller |
| CN214661245U (en) * | 2021-03-22 | 2021-11-09 | 中国长江电力股份有限公司 | Quick calibration device of pottery piston rod aperture appearance |
-
2021
- 2021-03-22 CN CN202110303835.4A patent/CN112945164B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4771866A (en) * | 1986-04-03 | 1988-09-20 | Enertrols, Inc. | Shock absorber with proximity switch |
| US4742794A (en) * | 1986-09-08 | 1988-05-10 | Bennett Marine, Inc. | Trim tab indicator system |
| CN2411259Y (en) * | 1999-12-01 | 2000-12-20 | 杭州钢铁集团公司 | Device for detecting open-degree of blast furnace non-bell top stopping valve |
| CN202220774U (en) * | 2011-07-16 | 2012-05-16 | 三一重工股份有限公司 | Displacement detection device and oil cylinder with the same |
| CN202468547U (en) * | 2011-12-20 | 2012-10-03 | 中联重科股份有限公司 | Telescoping cylinder and stroke detection apparatus thereof |
| CN202592808U (en) * | 2012-05-14 | 2012-12-12 | 徐州压力机械有限公司 | Anti-rotation and stroke control device of ejection cylinder of hydraulic press |
| CN203298728U (en) * | 2013-05-22 | 2013-11-20 | 北京中冶设备研究设计总院有限公司 | Hydraulic cylinder displacement sensor precision calibrating device |
| CN103994127A (en) * | 2014-04-25 | 2014-08-20 | 北京航天发射技术研究所 | Oil cylinder linear movement redundancy detection device and control method thereof |
| CN204403044U (en) * | 2014-12-29 | 2015-06-17 | 劲旅环境科技有限公司 | Cylinder position detector |
| CN106678123A (en) * | 2015-11-10 | 2017-05-17 | 江苏金宏泰机电科技有限公司 | High-precision hydraulic telescopic rod |
| CN105673618A (en) * | 2016-04-06 | 2016-06-15 | 北京航天发射技术研究所 | Hydraulic cylinder in-place detection device based on magnetic induction transmission |
| CN205956113U (en) * | 2016-08-25 | 2017-02-15 | 浙江阿凡特精密设备制造有限公司 | But roll adjustment type area proximity switch hydro -cylinder |
| CN206627086U (en) * | 2017-04-07 | 2017-11-10 | 中国航空综合技术研究所 | A kind of stroke caliberating device for linear hydraulic cylinder |
| CN208873022U (en) * | 2018-07-13 | 2019-05-17 | 北京新水源景科技股份有限公司 | The control system of observing and controlling one gate |
| CN108663986A (en) * | 2018-07-23 | 2018-10-16 | 浙江九州治水科技股份有限公司 | A kind of lock group's remote scheduling system and its control method based on BS |
| CN108916158A (en) * | 2018-07-31 | 2018-11-30 | 烟台未来自动装备有限责任公司 | A kind of oil cylinder stroke Detection & Controling method based on hydraulic oil volume flow |
| CN110273891A (en) * | 2019-07-30 | 2019-09-24 | 安徽马钢张庄矿业有限责任公司 | A kind of stroke oil cylinder |
| CN111957915A (en) * | 2020-09-10 | 2020-11-20 | 一重集团大连工程技术有限公司 | Self-adaptive control device for side sealing plates of double-roller thin-strip continuous casting roller |
| CN214661245U (en) * | 2021-03-22 | 2021-11-09 | 中国长江电力股份有限公司 | Quick calibration device of pottery piston rod aperture appearance |
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| CN112945164B (en) | 2022-09-20 |
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