CN204064276U - A kind of contactless main control valve displacement measuring device - Google Patents
A kind of contactless main control valve displacement measuring device Download PDFInfo
- Publication number
- CN204064276U CN204064276U CN201420508629.2U CN201420508629U CN204064276U CN 204064276 U CN204064276 U CN 204064276U CN 201420508629 U CN201420508629 U CN 201420508629U CN 204064276 U CN204064276 U CN 204064276U
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- Prior art keywords
- main control
- control valve
- displacement
- displacement transducer
- measuring device
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- Expired - Lifetime
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 114
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 230000009514 concussion Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of contactless main control valve displacement measuring device, comprise displacement sensor rod, non-contact displacement transducer and fixed support, one end of described displacement sensor rod is connected with the spool of main control valve, the other end is tapered cylinder body structure, described non-contact displacement transducer is arranged on fixed support, and described non-contact displacement transducer is just to the tapered cylinder side of displacement sensor rod.Displacement sensor rod of the present utility model is connected with the spool of main control valve, and the spool of main control valve drives displacement sensor rod to move, and moves forward into line displacement monitoring, thus realize the object to spool displacement monitoring by non-contact displacement transducer to displacement sensor rod; By non-contacting displacement monitoring, avoid main control valve significantly action cause and vibrate impact that sensor body is brought, reduce fluctuation and the error of feedback signal, reduce and have vibrations and the governing system concussion or out of control that causes.
Description
Technical field
The utility model relates to displacement measuring device, is specifically related to a kind of contactless main control valve displacement measuring device.
Background technology
Main control valve is the power level hydraulic amplifier of hydrogovernor machinery hydraulic system, the mechanical shift of electro-control converter or hydraulic control signal are zoomed into hydraulic pressure signal that is respective direction, proportional with it, that meet servomotor traffic requirement by it, control unlatching or the closedown of servomotor.Main control valve promotes servomotor and then promotes hydroturbine water intake mouth stator, to realize the control to hydroturbine water intake flow, thus reaches the object controlling rotational speed of water turbine.In the control procedure of main control valve, need main control valve displacement signal (i.e. the axial displacement signal of main control valve core parts spool) be introduced in hydrogovernor electrical system, to form closed-loop control.Generally adopt differential transformer type direct current displacement transducer in current industry, it is divided into, and iron core is detachable, guide type, back springing type, for cost reason, generally all uses back springing type.During use, main part maintains static, and core portion is mechanically fixed on on the parts of spool 1:1 action, and followed by spool action together.Therefore by differential transformer type direct current displacement transducer, spool axial displacement signal is sent into speed regulator electrical system, but there is following problem in existing detection mode: 1) main control valve is when significantly action, have larger vibration, sensor iron core can by vibration passing to sensor main body, have certain signal feedback error in this stage, have larger impact to the working control of governing system; 2) after main control valve long-play, sensor iron core and main part there will be wearing and tearing to a certain degree, and displacement transducer and master there will be loosening situation between joining, and governing system can be caused time serious out of control; 3) when installing, higher to the concentricity requirement of main body and iron core, there is certain difficulty in main control valve design and installation.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of contactless main control valve displacement measuring device.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of contactless main control valve displacement measuring device, comprise displacement sensor rod, non-contact displacement transducer and fixed support, one end of described displacement sensor rod is connected with the spool of main control valve, the other end is tapered cylinder body structure, described non-contact displacement transducer is arranged on fixed support, and described non-contact displacement transducer is just to the tapered cylinder side of displacement sensor rod.
Described fixed support comprises column, connecting rod and the installing plate in order to equipped with non-contact displacement transducer, on described column, cover has set collar, one end and the column of described installing plate are hinged, and one end and the set collar of described connecting rod are hinged, and the plate body of the other end and installing plate is hinged.
The side of described non-contact displacement transducer is provided with helicitic texture.
Described installing plate has the through hole mated with non-contact displacement transducer, described non-contact displacement transducer embeds in through hole, and the two ends of non-contact displacement transducer lay respectively at the both sides of installing plate, nut lock is all passed through in the two ends of described non-contact displacement transducer.
Described through hole is the through hole of the upper and lower lateral vertical with installing plate, and described non-contact displacement transducer vertically embeds in through hole.
Described set collar is positioned at the top of the pin joint of installing plate and column.
The beneficial effect that the utility model reaches: 1, displacement sensor rod of the present utility model is connected with the spool of main control valve, the spool of main control valve drives displacement sensor rod to move, by non-contact displacement transducer, line displacement monitoring is moved forward into displacement sensor rod, thus realize the object to spool displacement monitoring; By non-contacting displacement monitoring, avoid main control valve significantly action cause and vibrate impact that sensor body is brought, reduce fluctuation and the error of feedback signal, reduce and have vibrations and the governing system concussion or out of control that causes; 2, the utility model is by non-contacting displacement monitoring, avoid the mechanical wear between sensor iron core and body in long-play process, avoid the discontinuous of motion bite because contact friction brings or vibrations, reduce the measuring accuracy change along with passage of time brings, owing to avoiding Mechanical Contact, making to conduct by friction force the chance that the machinery that brings gets loose drops to minimum, ensures governing system stable operation; 3, the utility model is owing to adopting non-contacting displacement monitoring, change the position relationship between sensor body and main control valve spool, avoid right alignment requirement between the two, reduce the difficulty of main control valve design, the installation and debugging of main control valve are more prone to; 4, in conventional main control valve displacement detector, transducer range must be greater than the displacement of main control valve, this makes the displacement transducer that many small-ranges, high precision, the linearity are high, price is cheap not again to be suitable for, and in device of the present utility model, by changing the angle of α, the selection of sensor model number specification can be made more extensive, be conducive to improving measuring accuracy, reduce equipment cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, a kind of contactless main control valve displacement measuring device, comprise displacement sensor rod 2, non-contact displacement transducer 8 and fixed support, one end of displacement sensor rod 2 is connected with the spool of main control valve 1, the other end is tapered cylinder body structure, non-contact displacement transducer 8 is arranged on fixed support, and non-contact displacement transducer 8 is just to the tapered cylinder side of displacement sensor rod 2.
The fixed support of above-mentioned contactless main control valve displacement measuring device mainly plays fixing non-contact displacement transducer 8, ensure that as long as last non-contact displacement transducer 8 is just to the tapered cylinder side of displacement sensor rod 2, so this fixed support can be the solid mechanical structure of unadjustable formula, may also be can the physical construction of paramodulant.Be here can the physical construction of paramodulant to be suitable for what more extensively adopt, concrete structure be as follows:
Fixed support comprises column 3, connecting rod 5 and the installing plate 6 in order to equipped with non-contact displacement transducer 8, one end and the column 3 of installing plate 6 are hinged, on column 3, cover has set collar 4, set collar 4 is positioned at the top of the pin joint of installing plate 6 and column 3, one end and the set collar 4 of connecting rod 5 are hinged, and the plate body of the other end and installing plate 6 is hinged.This kind of structure only need regulate the angle (α marks in the drawings, is the angle of installing plate 6 surface level) of the position of set collar 4 and adjustable α, to guarantee non-contact displacement transducer 8 just to the tapered cylinder side of displacement sensor rod 2.
In order to better lock non-contact displacement transducer 8, the side of non-contact displacement transducer 8 is provided with helicitic texture, installing plate 6 has the through hole mated with non-contact displacement transducer 8, this leads to for the through hole with the upper and lower lateral vertical of installing plate 6, non-contact displacement transducer 8 embeds in through hole, be vertical embedding in particular, the two ends of non-contact displacement transducer 8 lay respectively at the both sides of installing plate 6, and the two ends of non-contact displacement transducer 8 are all locked by nut 7.This kind of structure is by setting nut 7, the relative distance of the tapered cylinder side of adjustment non-contact displacement transducer 8 and displacement sensor rod 2, during to ensure that displacement sensor rod 2 is moved all the time in the measurement range of non-contact displacement transducer 8, and do not damage non-contact displacement transducer 8.
Above-mentioned contactless main control valve displacement measuring device in use, first non-contact displacement transducer 8 is arranged on installing plate 6, regulate the distance of the tapered cylinder side of non-contact displacement transducer 8 and displacement sensor rod 2, the spool of main control valve 1 moves, displacement sensor rod 2 is driven to move, when mobile, the tapered cylinder side of displacement sensor rod 2 can become constant ratio to change with the spacing between non-contact displacement transducer 8, distance signal is exported to governing system electric part by non-contact displacement transducer 8, the axial displacement signal of spool can be converted into the displacement signal between non-contact displacement transducer 8 and displacement sensor rod 2 by the method, and feed back to governing system electric control system, to realize contactless main control valve 1 displacement measurement.
Above-mentioned contactless main control valve displacement measuring device, by non-contacting displacement monitoring, avoid main control valve 1 significantly action cause and vibrate impact that sensor body is brought, reduce fluctuation and the error of feedback signal, reduce and have vibrations and the governing system concussion or out of control that causes; Above-mentioned contactless main control valve displacement measuring device, by non-contacting displacement monitoring, avoid the mechanical wear between sensor iron core and body in long-play process, avoid the discontinuous of motion bite because contact friction brings or vibrations, reduce the measuring accuracy change along with passage of time brings, making to conduct by friction force the chance that the machinery that brings gets loose drops to minimum, ensures governing system stable operation; Above-mentioned contactless main control valve displacement measuring device, change the position relationship between sensor body and main control valve 1 spool, avoid right alignment requirement between the two, reduce the difficulty that main control valve 1 designs, the installation and debugging of main control valve 1 are more prone to; Above-mentioned contactless main control valve displacement measuring device, by changing the angle of α, can make the selection of sensor model number specification more extensive, being conducive to improving measuring accuracy, reducing equipment cost.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection domain of the present utility model.
Claims (6)
1. a contactless main control valve displacement measuring device, it is characterized in that: comprise displacement sensor rod (2), non-contact displacement transducer (8) and fixed support, one end of described displacement sensor rod (2) is connected with the spool of main control valve (1), the other end is tapered cylinder body structure, described non-contact displacement transducer (8) is arranged on fixed support, and described non-contact displacement transducer (8) is just to the tapered cylinder side of displacement sensor rod (2).
2. the contactless main control valve displacement measuring device of one according to claim 1, it is characterized in that: described fixed support comprises column (3), connecting rod (5) and the installing plate (6) in order to equipped with non-contact displacement transducer (8), the upper cover of described column (3) has set collar (4), one end and the column (3) of described installing plate (6) are hinged, one end and the set collar (4) of described connecting rod (5) are hinged, and the plate body of the other end and installing plate (6) is hinged.
3. the contactless main control valve displacement measuring device of one according to claim 2, is characterized in that: the side of described non-contact displacement transducer (8) is provided with helicitic texture.
4. the contactless main control valve displacement measuring device of one according to claim 3, it is characterized in that: described installing plate (6) has the through hole mated with non-contact displacement transducer (8), described non-contact displacement transducer (8) embeds in through hole, and the two ends of non-contact displacement transducer (8) lay respectively at the both sides of installing plate (6), the two ends of described non-contact displacement transducer (8) are all locked by nut (7).
5. the contactless main control valve displacement measuring device of one according to claim 4, is characterized in that: described through hole is the through hole with installing plate (6) upper and lower lateral vertical, and described non-contact displacement transducer (8) vertically embeds in through hole.
6. the contactless main control valve displacement measuring device of one according to claim 2, is characterized in that: described set collar (4) is positioned at the top of the pin joint of installing plate (6) and column (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508629.2U CN204064276U (en) | 2014-09-05 | 2014-09-05 | A kind of contactless main control valve displacement measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508629.2U CN204064276U (en) | 2014-09-05 | 2014-09-05 | A kind of contactless main control valve displacement measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204064276U true CN204064276U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508629.2U Expired - Lifetime CN204064276U (en) | 2014-09-05 | 2014-09-05 | A kind of contactless main control valve displacement measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204064276U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226046A (en) * | 2016-07-12 | 2016-12-14 | 中国矿业大学 | A kind of poppet spool valve vibration test system and method |
| CN106768922A (en) * | 2016-11-29 | 2017-05-31 | 广东蓄能发电有限公司 | A kind of wicket gate control loop stroke detection with distributing valve and adjustment method |
| CN108413910A (en) * | 2018-02-26 | 2018-08-17 | 中国长江电力股份有限公司 | A kind of main dispensing spool displacement measurement method of governor and device of the anti-drift of electromagnetism interference |
| CN108413911A (en) * | 2018-02-26 | 2018-08-17 | 中国长江电力股份有限公司 | A kind of main dispensing spool displacement measurement method of contactless governor and device |
| CN110657768A (en) * | 2019-10-28 | 2020-01-07 | 西安交通大学 | Method for measuring axial and radial displacements of rotor by utilizing conical surface |
| CN112459957A (en) * | 2020-12-08 | 2021-03-09 | 中国长江电力股份有限公司 | Device and method for monitoring state of main distributing valve of speed regulator of water turbine |
| CN113899314A (en) * | 2021-09-09 | 2022-01-07 | 燕山大学 | Spectrum confocal-based non-contact type valve core displacement real-time measuring device and method |
| CN115148222A (en) * | 2022-08-31 | 2022-10-04 | 安徽声讯信息技术有限公司 | Industrial fluid detection method and system |
-
2014
- 2014-09-05 CN CN201420508629.2U patent/CN204064276U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226046A (en) * | 2016-07-12 | 2016-12-14 | 中国矿业大学 | A kind of poppet spool valve vibration test system and method |
| CN106768922A (en) * | 2016-11-29 | 2017-05-31 | 广东蓄能发电有限公司 | A kind of wicket gate control loop stroke detection with distributing valve and adjustment method |
| CN108413910A (en) * | 2018-02-26 | 2018-08-17 | 中国长江电力股份有限公司 | A kind of main dispensing spool displacement measurement method of governor and device of the anti-drift of electromagnetism interference |
| CN108413911A (en) * | 2018-02-26 | 2018-08-17 | 中国长江电力股份有限公司 | A kind of main dispensing spool displacement measurement method of contactless governor and device |
| CN110657768A (en) * | 2019-10-28 | 2020-01-07 | 西安交通大学 | Method for measuring axial and radial displacements of rotor by utilizing conical surface |
| CN110657768B (en) * | 2019-10-28 | 2020-11-17 | 西安交通大学 | Method for measuring axial and radial displacements of rotor by utilizing conical surface |
| CN112459957A (en) * | 2020-12-08 | 2021-03-09 | 中国长江电力股份有限公司 | Device and method for monitoring state of main distributing valve of speed regulator of water turbine |
| CN113899314A (en) * | 2021-09-09 | 2022-01-07 | 燕山大学 | Spectrum confocal-based non-contact type valve core displacement real-time measuring device and method |
| CN115148222A (en) * | 2022-08-31 | 2022-10-04 | 安徽声讯信息技术有限公司 | Industrial fluid detection method and system |
| CN115148222B (en) * | 2022-08-31 | 2023-01-03 | 安徽声讯信息技术有限公司 | Industrial fluid detection method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171115 Address after: High road high tech Development Zone Nanjing city Jiangsu province 210032 No. 20 Co-patentee after: STATE GRID ELECTRIC POWER Research Institute Patentee after: NARI TECHNOLOGY Co.,Ltd. Address before: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210000 Co-patentee before: STATE GRID ELECTRIC POWER Research Institute Patentee before: NANJING NARI Group Corp. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
|
| CX01 | Expiry of patent term |