CN102679933A - Absolute displacement monitoring device used for lifting mechanism - Google Patents
Absolute displacement monitoring device used for lifting mechanism Download PDFInfo
- Publication number
- CN102679933A CN102679933A CN2012101722059A CN201210172205A CN102679933A CN 102679933 A CN102679933 A CN 102679933A CN 2012101722059 A CN2012101722059 A CN 2012101722059A CN 201210172205 A CN201210172205 A CN 201210172205A CN 102679933 A CN102679933 A CN 102679933A
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- Prior art keywords
- elevating mechanism
- monitoring device
- displacement transducer
- absolute displacement
- mount pad
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 45
- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000003028 elevating effect Effects 0.000 claims description 47
- 230000001939 inductive effect Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 7
- 230000006698 induction Effects 0.000 abstract 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses an absolute displacement monitoring device used for a lifting mechanism. The absolute displacement monitoring device comprises the lifting mechanism, an installation base, a displacement transducer, a connecting induction part, a stop block, a junction box, a PLC (programmable logic controller) and a display, wherein the displacement transducer, the connecting induction part and the stop block are hermetically arranged in the installation base; the installation base is arranged on the top of the lifting mechanism in a demountable manner, one end of the connecting induction part is arranged on the top of a spiral screw of the lifting mechanism, and the other end of the lifting mechanism is connected with the displacement transducer; and the displacement transducer, the connecting induction part as well as the display can carry out information transmission with the PLC. The absolute displacement monitoring device provided by the invention can exactly and real-time monitor and can collect the absolute displacement of the lifting mechanism in high-temperature dustiness strong-erosion environment, and can provide reliable importance data and installation security for the air leak of an air preheater.
Description
Technical field
The present invention relates to a kind of monitoring device, relate in particular to a kind of absolute displacement monitoring device that is used for elevating mechanism.
Background technology
In order to respond national energy-saving and emission-reduction policy and to consider the operation of fired power generating unit economy, each big electricity power enterprise has strengthened the dynamics to air-heater leakage control one after another.Current large-scale air primary heater all is equipped with the control device that leaks out, and gap adjustment elevating mechanism is its important executive component.Expand unevenly when the rotor in the air preheater is heated, the distortion of dried mushroom shape takes place, make between fanning strip and the rotor radial seal circle and exist the gap, area is big more owing to leak out more greatly in the gap, and indexs such as boiler efficiency are just low more.
The size that this shows gap width directly determined the to leak out quality of performance, and in high temperature and airtight environment, monitor gap width in the prior art, existing very mistake, accuracy is lower.
Summary of the invention
The objective of the invention is to solve the problems of the prior art, provide a kind of realize in the strong environment of heat power station air preheater high temperature, many dirt, corrosion accurately, the absolute displacement monitoring device of reliable and real-time monitoring elevating mechanism absolute displacement value and spacing elevating mechanism stroke.
Technical scheme of the present invention is: a kind of absolute displacement monitoring device that is used for elevating mechanism; Comprise elevating mechanism, mount pad, displacement transducer, connection inductive means, stop means, terminal box, PLC and display; Said displacement transducer, connect inductive means, stop means is all airtight is arranged in the mount pad; Said mount pad detachably is arranged on the top of said elevating mechanism; Said connection inductive means one end is installed in the top of the screw that is arranged at the elevating mechanism top, and the other end that connects inductive means is connected with said displacement transducer; Said displacement transducer, connection inductive means and display and said PLC information transmission.
Said elevating mechanism is fixed on the end platform of actuator.
Said screw is connected with suspension rod through screw thread or bearing pin.
Said elevating mechanism top is provided with the top cover screw thread, and the top cover screw thread is provided with excessive ring flange, and said mount pad is arranged on the top of said counter flange through screw retention.
Said mount pad is a full seal type, and the hoisting depth of its height and elevating mechanism is suitable.
One side of said mount pad is reserved with installs screw and wiring position.
Said connection inductive means can be regulated according to the lifting distance of reality
Said connection inductive means is made up of two parts; First parts, one end is connected on the elevating mechanism leading screw and plays fixation; The other end utilizes double nut to be connected with displacement transducer; Double nut can be fixed on the optional position of displacement transducer pull bar and play the effect of regulating the connection inductive means, and second parts are connected directly on second parts, play the effect of sensing chip.
The present invention can be in the strong environment of high temperature, many dirt, corrosion accurately and monitoring in real time, gather the elevating mechanism absolute displacement, can ensure with installing for air-heater leakage control provide reliable significant data.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a system construction drawing of the present invention;
Fig. 3 is a front view of the present invention.
Embodiment
Understand for technological means, technical characterictic, goal of the invention and the technique effect that the present invention is realized is easy to understand,, further set forth the present invention below in conjunction with concrete diagram.
Be illustrated in figure 1 as the absolute displacement monitoring device that is used for elevating mechanism among the present inventor; Comprise elevating mechanism 1, mount pad 2, displacement transducer 3, connect inductive means 4, stop means 5, terminal box 6, Programmable Logic Controller PLC and display 7; Displacement transducer 3, connection inductive means 4, stop means 5 all are integrated in the mount pad 2, and mount pad 2 integral installations also can independently be dismantled at elevating mechanism 1 top.
Utilize the top cover screw thread on the elevating mechanism 1, counter flange 12 is threaded to the fixed position through the top cover screw thread, utilizes screw to be fixed on mount pad 2 on the counter flange 12 again, thereby guarantees that mount pad 2 integral installations are on elevating mechanism 1; Mount pad 2 is hermetically sealed design; The height of design and the hoisting depth of screw 11 are adaptive each other; And on mount pad 2, be reserved with screw 22 and wiring position 21 are installed, mount pad 2 in the present invention disposes a seal casing, can make things convenient for on-the-spot installation and debugging to use.
In order to satisfy high temperature, many dirt, the strong environment of corrosion, displacement transducer 3, stop means 5 all adopt high temperature resistant configuration, the highest ability 150 celsius temperatures; Connect inductive means 4 one ends are installed in screw 11 through screw top; The other end links to each other with displacement transducer 3, and displacement transducer 3, connects inductive means 4 and can regulate according to the lifting distance of reality on mount pad 2 corresponding positions through the screw secure fixation; Said connection inductive means 4 is made up of two parts; First parts 41 are connected directly on the leading screw of elevating mechanism 1 and play fixation, and second parts, 42 1 ends are connected with first parts 41, and the other end utilizes double nut 43 to be connected with displacement transducer 3; Double nut 43 can be fixed on the optional position of displacement transducer 3 pull bars, can play the effect that connects inductive means 4 of regulating like this.
This connects the operation of inductive means 4 along with elevating mechanism 1 simultaneously; Play a part stop means 5 sensing chips; In case elevating mechanism 1 surpasses the extreme limit of travel of setting; Stop means 5 can be sensed and connect inductive means 4, and signal reaches PLC and cuts off elevating mechanism power after treatment, plays the effect of protection elevating mechanism; Stop means 5 adopts the slotted hole pattern to be fixed on mount pad 2 relevant positions, the slotted hole pattern is set can makes things convenient for field adjustable to install.
As shown in Figure 2, control system is integrated in PLC and display 7 in the field control cabinet, realizes the operation of control elevating mechanism 1 automatically through PLC control; The absolute displacement distance that shows elevating mechanism 1 with display 7 in real time; Control the stroke limit of elevating mechanism 1 simultaneously; And displacement transducer 3 and stop means 5 as feedback element; Avoided calculating the error of elevating mechanism 1 actual displacement value, utilized absolute value monitoring device of the present invention can improve the monitoring accuracy and the reliability of elevating mechanism 1 greatly through algorithm and potentiometer.
Being merely preferred embodiment of the present invention in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of claim of the present invention change and modification, all should belong to technological category of the present invention.
Claims (7)
1. absolute displacement monitoring device that is used for elevating mechanism; It is characterized in that; Comprise elevating mechanism, mount pad, displacement transducer, connection inductive means, stop means, terminal box, PLC and display; Said displacement transducer, connect inductive means, stop means is all airtight is arranged in the mount pad; Said mount pad detachably is arranged on the top of said elevating mechanism, and said connection inductive means one end is installed in the top of the screw that is arranged at the elevating mechanism top, and the other end that connects inductive means is connected with said displacement transducer; Said displacement transducer, connection inductive means and display and said PLC information transmission.
2. the absolute displacement monitoring device that is used for elevating mechanism as claimed in claim 1 is characterized in that said elevating mechanism is fixed on the end platform of actuator.
3. the absolute displacement monitoring device that is used for elevating mechanism as claimed in claim 1 is characterized in that, said screw is connected with suspension rod through screw thread or bearing pin.
4. according to claim 1 or claim 2 the absolute displacement monitoring device that is used for elevating mechanism; It is characterized in that; Said elevating mechanism top is provided with the top cover screw thread, and the top cover screw thread is provided with excessive ring flange, and said mount pad is arranged on the top of said counter flange through screw retention.
5. the absolute displacement monitoring device that is used for elevating mechanism as claimed in claim 1 is characterized in that said mount pad is a full seal type, and the hoisting depth of its height and elevating mechanism is suitable.
6. like claim 1 or the 5 described absolute displacement monitoring devices that are used for elevating mechanism, it is characterized in that a side of said mount pad is reserved with installs screw and wiring position.
7. the absolute displacement monitoring device that is used for elevating mechanism as claimed in claim 1 is characterized in that said connection inductive means can be regulated according to the lifting distance of reality; Said connection inductive means is made up of two parts; First parts, one end is connected on the elevating mechanism leading screw and plays fixation, and the other end utilizes double nut to be connected with displacement transducer, and double nut can be fixed on the optional position of displacement transducer pull bar; Second parts are connected directly on second parts, play the effect of sensing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210172205.9A CN102679933B (en) | 2012-05-29 | 2012-05-29 | Absolute displacement monitoring device used for lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210172205.9A CN102679933B (en) | 2012-05-29 | 2012-05-29 | Absolute displacement monitoring device used for lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102679933A true CN102679933A (en) | 2012-09-19 |
| CN102679933B CN102679933B (en) | 2015-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210172205.9A Active CN102679933B (en) | 2012-05-29 | 2012-05-29 | Absolute displacement monitoring device used for lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102679933B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415359A (en) * | 2018-03-01 | 2018-08-17 | 芜湖市海联机械设备有限公司 | A kind of potting porcelain elevator |
| CN109470190A (en) * | 2018-11-09 | 2019-03-15 | 中国直升机设计研究所 | Rod-pulling type displacement sensor fixes device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888407Y (en) * | 2005-09-29 | 2007-04-11 | 宝山钢铁股份有限公司 | Automatic joining length measurer for pipe collar |
| CN2938185Y (en) * | 2006-08-01 | 2007-08-22 | 上海市东方海事工程技术有限公司 | Air leakage control system of air preheater |
| JP2007278832A (en) * | 2006-04-06 | 2007-10-25 | Hitachi Plant Technologies Ltd | Jig for measuring level difference of connecting plane of direct-acting bearing |
| CN202614206U (en) * | 2012-05-29 | 2012-12-19 | 上海市东方海事工程技术有限公司 | Absolute displacement monitoring device used for elevating mechanism |
-
2012
- 2012-05-29 CN CN201210172205.9A patent/CN102679933B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888407Y (en) * | 2005-09-29 | 2007-04-11 | 宝山钢铁股份有限公司 | Automatic joining length measurer for pipe collar |
| JP2007278832A (en) * | 2006-04-06 | 2007-10-25 | Hitachi Plant Technologies Ltd | Jig for measuring level difference of connecting plane of direct-acting bearing |
| CN2938185Y (en) * | 2006-08-01 | 2007-08-22 | 上海市东方海事工程技术有限公司 | Air leakage control system of air preheater |
| CN202614206U (en) * | 2012-05-29 | 2012-12-19 | 上海市东方海事工程技术有限公司 | Absolute displacement monitoring device used for elevating mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415359A (en) * | 2018-03-01 | 2018-08-17 | 芜湖市海联机械设备有限公司 | A kind of potting porcelain elevator |
| CN109470190A (en) * | 2018-11-09 | 2019-03-15 | 中国直升机设计研究所 | Rod-pulling type displacement sensor fixes device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102679933B (en) | 2015-04-15 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qiu Donglei Inventor after: Kuang Jun Inventor after: Ma Yushun Inventor after: Du Yanqing Inventor after: Wang Ligang Inventor after: Yang Di Inventor after: Chen Yingying Inventor before: Qiu Donglei Inventor before: Kuang Jun Inventor before: Ma Yushun Inventor before: Du Yanqing Inventor before: Wang Ligang Inventor before: Yang Di Inventor before: Chen Yingying |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An absolute displacement monitoring device for lifting mechanisms Granted publication date: 20150415 Pledgee: Huangpu Sub branch of Bank of Shanghai Co.,Ltd. Pledgor: SHANGHAI ORIENTAL MARITIME ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2024310000150 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |