CN204461719U - Safety valve on-line testing clamping measurement mechanism - Google Patents
Safety valve on-line testing clamping measurement mechanism Download PDFInfo
- Publication number
- CN204461719U CN204461719U CN201420845207.4U CN201420845207U CN204461719U CN 204461719 U CN204461719 U CN 204461719U CN 201420845207 U CN201420845207 U CN 201420845207U CN 204461719 U CN204461719 U CN 204461719U
- Authority
- CN
- China
- Prior art keywords
- chuck
- hole
- safety valve
- upper chuck
- lower chuck
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model provides a kind of safety valve on-line testing to clamp measurement mechanism, comprise upper chuck, lower chuck, frame link and measuring mechanism, upper chuck is the plectane with central through hole, central through hole top periphery is provided with groove, lower chuck is the cavity disk that diameter is greater than upper chuck, centre is provided with through hole, the lower surface of lower chuck is provided with multiple claw, frame link is used for being connected and fixed upper chuck and lower chuck, measuring mechanism comprises center rod, gland nut, displacement transducer, pressure transducer, hydraulic cylinder, stop nut, hydraulic cylinder, pressure transducer and displacement transducer are installed in center rod by gland nut and stop nut successively, and make center rod pass the central through hole of upper chuck and be configured at by hydraulic cylinder in the groove on upper chuck, center rod is connected with the safety valve valve rod through the through hole in the middle of lower chuck by attaching nut.This device can guarantee the accuracy of safety valve on-line testing.
Description
Technical field
The utility model relates to a kind of safety valve on-line testing clamping measurement mechanism, and this device is mainly used in the on-line testing of all size spring safety valve, guarantees the accuracy of safety valve on-line testing.
Background technology
Safety valve on-line testing is the specialized techniques that new development is in recent years got up, achieve the do not stop on-the-spot online level pressure of valve in operational process, and efficiently solve valve take-off and do not return the problem such as seat, kick leakage, ensure that continuous production and security of operation.Its ultimate principle is that the initial tension of spring utilizing an additional lift to make every effort to overcome to take self is opened to realize safety valve, by reasonably sentencing evolution formula (utilizing the opening of displacement transducer aware security valve), gather additional lift power suffered when safety valve is opened, thus measure opening pressure value accurately, therefore, adopt a device that can realize Fast Installation, effectively clamping, particularly important to seeming smoothly of safety valve on-line testing work.
At present, in safety valve on-line testing process, the following problem of clamping device ubiquity:
(1) centering difficulty between safety valve on-line testing device and valve body, needs repeatedly to regulate and could realize;
(2) most safety valve on-line testing device only installs a displacement transducer, and the displacement point of mensuration easily affects by device alignment error, and open displacement produce deviation with valve clack of safety valve is actual, impact judges the accuracy of opening pressure.
For feature and the present situation of current safety valve on-line testing clamping device, the utility model proposes a novel safety valve on-line testing clamping device.
Summary of the invention
Technology of the present utility model is dealt with problems: adopt safety valve on-line testing instrument, in conjunction with Self-made Frame formula frock, provides a kind of and can realize automatic centering, spacing unlatching, measures precisely, take up room less clamping device.
Safety valve on-line testing clamping device of the present utility model comprises support frame and measuring mechanism, described support frame comprises upper chuck, lower chuck and frame link, described upper chuck is the plectane with central through hole, described central through hole top periphery is provided with groove, described lower chuck is the cavity disk that diameter is greater than described upper chuck, centre is provided with through hole, the lower surface of described lower chuck is provided with multiple claw, for fixing at valve body of safety valve, described frame link is used for being connected and fixed described upper chuck and described lower chuck, described measuring mechanism comprises center rod, gland nut, displacement transducer, pressure transducer, hydraulic cylinder, stop nut, described hydraulic cylinder, described pressure transducer and institute's displacement sensors are installed in described center rod by described gland nut and described stop nut successively, and by making described center rod be configured in the groove on described upper chuck through the central through hole of described upper chuck by described hydraulic cylinder, described center rod is connected with the safety valve valve rod through the through hole in the middle of described lower chuck by attaching nut.
Preferred described frame link is the straight-bar that three upper ends offer through hole, be threaded connection and be distributed on described lower chuck in 120 ° of circumferences, the outer circumference end of described upper chuck is 120 ° of intervals have through hole mounting ear with three, three described frame link are each passed through the through hole of three described mounting ears, and it is fixing to realize with described upper chuck by holding screw.
Preferred described claw is three, described lower chuck is the cavity disk with central through hole, three bevel pinions uniform in 120 ° of circumferences and a bevel gear wheel are installed in lower chuck cavity, the lower surface of lower chuck 1 is evenly equipped with three open slots in 120 ° of circumferences, radially move for mounting limit three claws, three claws engage with bevel gear wheel respectively by planar rectangular screw thread, and bevel gear wheel is engaged with three bevel pinions by cone tooth.
Preferably be fixed with three displacement transducer thimbles the lower surface of institute's displacement sensors is circumferentially uniform.
The utility model advantage is compared with prior art as follows:
(1) lower chuck in the utility model adopts scroll chuck structure, conveniently can realize the automatic centering of safety valve on-line testing device and valve body of safety valve;
(2) center rod in the utility model installs three displacement transducer thimbles, uniform placement three displacement points on upper chuck, by the Comprehensive Evaluation of three shift values, the error judging to open displacement can be reduced, improve displacement measurement precision.
Accompanying drawing explanation
Fig. 1 is safety valve on-line testing clamping measurement mechanism structural representation.
Fig. 2 is upper chuck vertical view.
Fig. 3 is lower chuck vertical view.
Fig. 4 is lower chuck upward view.
Symbol description:
1, lower chuck 2, claw 3, bevel gear wheel 4, bevel pinion 5, frame link 6, upper chuck 7, center rod 8, gland nut 9, displacement transducer 10, pressure transducer 11, hydraulic cylinder 12, stop nut 13, attaching nut 14, displacement transducer thimble
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, Figure 2 and Figure 3, safety valve on-line testing clamping measurement mechanism of the present utility model comprises lower chuck 1, claw 2, bevel gear wheel 3, bevel pinion 4, upper chuck 6, center rod 7, gland nut 8, displacement transducer 9, pressure transducer 10, hydraulic cylinder 11, stop nut 12, attaching nut 13 and displacement transducer thimble 14.Lower chuck 1 is the cavity disk with central through hole, frame link 5 is the straight-bar that three upper ends offer through hole, be threaded connection and uniformly in 120 ° of circumferences be fixed on lower chuck 1, upper chuck 6 is less than the plectane with central through hole of lower chuck 1 for diameter, be 120 ° of intervals to have through hole mounting ear with three in the outer circumference end of upper chuck 6, three frame link 5 are each passed through the through hole of three mounting ears, and it is fixing to realize with upper chuck 6 by holding screw.
Upper chuck 6 central through hole top periphery is provided with groove, and hydraulic cylinder 11 is placed on this central recess.Center rod 7 is through the central through hole of upper chuck 6, by stop nut 12 and gland nut 8 acting in conjunction, displacement transducer 9, pressure transducer 10 and hydraulic cylinder 11 are fastenedly connected successively in center rod 7, are fixed with three displacement transducer thimbles 14 the lower surface of displacement transducer 9 is circumferentially uniform.The lower end of center rod 7 is connected with the safety valve valve rod of the central through hole through lower chuck 1 by attaching nut 13.
Shown in Fig. 1 and Fig. 4, lower chuck 1 is scroll chuck structure, be made up of claw 2, bevel gear wheel 3, bevel pinion 4, three bevel pinions 4 uniform in 120 ° of circumferences and a bevel gear wheel 3 are installed in lower chuck 1 cavity, the lower surface of lower chuck 1 is evenly equipped with three open slots in 120 ° of circumferences, radially move for mounting limit three claws 2, three claws 2 engage with bevel gear wheel 3 respectively by planar rectangular screw thread, and bevel gear wheel 3 is engaged with three bevel pinions 4 by cone tooth.
During work, three bevel pinions 4 are rotated by spanner, drive bevel gear wheel 3 to rotate, bevel gear wheel 3 drives three claws 2 radial to central motion along lower chuck open slot by planar rectangular screw thread, thus clamping valve body of safety valve realize the automatic centering of lower chuck 1 and safety valve; Three frame link 5 are threaded connection and are installed on lower chuck 1, then place upper chuck 6, be connected and fixed by the through hole of frame link 5 and upper chuck 6 with holding screw; Upper chuck 6 is placed hydraulic cylinder 11, makes center rod 7 through hydraulic cylinder 11, mounting limit nut 12, and attaching nut 13 is installed is connected with safety valve valve rod; Pressure transducer 10, displacement transducer 9 are positioned on hydraulic cylinder 11 by center rod 7 successively, finally use gland nut 8 fastening, now displacement transducer thimble is fixed on upper chuck 6, thus achieves the connection between safety valve on-line testing instrument and valve body of safety valve.When hydraulic cylinder 11 applies to reach certain pressure, center rod 7 will be driven to rise by pressure transducer 10, displacement transducer 9 and gland nut 8, thus promote safety valve valve rod by attaching nut 13, reach the object that safety valve is opened, now carry out Comprehensive Evaluation according to the reading of three displacement transducers 9, determine that valve rod promotes displacement, realize measuring precisely.
Concrete structure explanation of the present utility model and verification experimental verification all demonstrate the feature that the utility model has, the quick and precisely installation of safety valve on-line testing instrument can be realized, reduce detection labour intensity, reduce taking up room of device, effectively raise measurement precision and the work efficiency of safety valve on-line testing.
Above preferred implementation of the present utility model is illustrated, but the utility model is not limited to above-described embodiment.To one skilled in the art, in the category described in claims, various modification or fixed case can be expected apparently, certainly also belong to technology category of the present utility model.
Claims (4)
1. a safety valve on-line testing clamping measurement mechanism, it is characterized in that: comprise support frame and measuring mechanism, described support frame comprises upper chuck, lower chuck and frame link, described upper chuck is the plectane with central through hole, described central through hole top periphery is provided with groove, described lower chuck is the cavity disk that diameter is greater than described upper chuck, centre is provided with through hole, the lower surface of described lower chuck is provided with multiple claw, for fixing at safety valve housing, described frame link is used for being connected and fixed described upper chuck and described lower chuck, described measuring mechanism comprises center rod, gland nut, displacement transducer, pressure transducer, hydraulic cylinder, stop nut, described hydraulic cylinder, described pressure transducer and institute's displacement sensors are installed in described center rod by described gland nut and described stop nut successively, and by making described center rod be configured in the groove on described upper chuck through the central through hole of described upper chuck by described hydraulic cylinder, described center rod is connected with the safety valve valve rod through the through hole in the middle of described lower chuck by attaching nut.
2. safety valve on-line testing clamping measurement mechanism as claimed in claim 1, it is characterized in that: described frame link is the straight-bar that three upper ends offer through hole, be threaded connection and be distributed on described lower chuck in 120 ° of circumferences, the outer circumference end of described upper chuck is 120 ° of intervals have through hole mounting ear with three, three described frame link are each passed through the through hole of three described mounting ears, and it is fixing to realize with described upper chuck by holding screw.
3. safety valve on-line testing clamping measurement mechanism as claimed in claim 1 or 2, it is characterized in that: described claw is three, described lower chuck is the cavity disk with central through hole, three bevel pinions uniform in 120 ° of circumferences and a bevel gear wheel are installed in described lower chuck cavity, the lower surface of described lower chuck is evenly equipped with three open slots in 120 ° of circumferences, radially move for mounting limit three described claws, three described claws engage with described bevel gear wheel respectively by planar rectangular screw thread, described bevel gear wheel is engaged with three described bevel pinions by cone tooth.
4. safety valve on-line testing clamping measurement mechanism as claimed in claim 1, is characterized in that: be fixed with three displacement transducer thimbles the lower surface of institute's displacement sensors is circumferentially uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420845207.4U CN204461719U (en) | 2014-12-26 | 2014-12-26 | Safety valve on-line testing clamping measurement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420845207.4U CN204461719U (en) | 2014-12-26 | 2014-12-26 | Safety valve on-line testing clamping measurement mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204461719U true CN204461719U (en) | 2015-07-08 |
Family
ID=53668588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420845207.4U Active CN204461719U (en) | 2014-12-26 | 2014-12-26 | Safety valve on-line testing clamping measurement mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204461719U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768995A (en) * | 2017-03-28 | 2017-05-31 | 华东交通大学 | A kind of chuck mode parking brake detects clamping device |
| CN114235370A (en) * | 2021-12-17 | 2022-03-25 | 中国核动力研究设计院 | Device and method for measuring output precision of electromagnetic actuating mechanism |
-
2014
- 2014-12-26 CN CN201420845207.4U patent/CN204461719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768995A (en) * | 2017-03-28 | 2017-05-31 | 华东交通大学 | A kind of chuck mode parking brake detects clamping device |
| CN114235370A (en) * | 2021-12-17 | 2022-03-25 | 中国核动力研究设计院 | Device and method for measuring output precision of electromagnetic actuating mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107576437B (en) | Gas turbine rotor axial load measuring device | |
| CN204461719U (en) | Safety valve on-line testing clamping measurement mechanism | |
| CN102564260B (en) | Detection apparatus of arc tenon-tooth blade-root molded line and intermediate molded line | |
| CN201983742U (en) | High-precision detection appliance for conical hole | |
| CN104315956B (en) | Aero-engine vector spout load state height measuring device and measuring method | |
| CN102589383B (en) | Inner gear ring gear measurement clamp | |
| CN105092125B (en) | A kind of torque sensor installs structure additional | |
| CN203767833U (en) | Device for improving assembling accuracy of round nut for heavy-duty machine tool spindle | |
| CN204214379U (en) | Piston ring diameter measuring device | |
| CN203216440U (en) | Testing fixture for eccentric distance of crank pin hole of engine | |
| CN204240879U (en) | The hole position detecting mechanism of car bottom side longeron assembly checking tool | |
| CN104165567B (en) | Piston ring diameter measuring device | |
| CN105627861A (en) | Detection tool for gas-out end of exhaust manifold | |
| CN203881237U (en) | Pitch diameter measuring device for large-size thread ring gage | |
| CN104613850A (en) | Device for detecting depth of fastening hole in engine rockshaft | |
| CN204301764U (en) | The checkout gear of inductor induction range and distance in flat machine | |
| CN204575014U (en) | A kind of device for motor rockshaft fastener hole depth detection | |
| CN202092563U (en) | Detection tool for machining precision of clamp body sealing groove | |
| CN102590333A (en) | Adjustable eddy current probe fixing mechanism used for detecting central hole of turbine rotor | |
| CN207010983U (en) | One kind test sensitivity of microphone microphone position-limit mechanism | |
| CN202470947U (en) | Inner gear ring gear measuring fixture | |
| CN202048876U (en) | Disk position measuring device | |
| CN202420354U (en) | Profile detecting device for blade roots of arc tenon teeth and intermediates | |
| CN204228033U (en) | A kind of number of coils pick-up unit | |
| CN205373607U (en) | Engine valve sealing strip detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |