CN102748529B - Valve rod packing loss display device - Google Patents
Valve rod packing loss display device Download PDFInfo
- Publication number
- CN102748529B CN102748529B CN201210194699.0A CN201210194699A CN102748529B CN 102748529 B CN102748529 B CN 102748529B CN 201210194699 A CN201210194699 A CN 201210194699A CN 102748529 B CN102748529 B CN 102748529B
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- China
- Prior art keywords
- filler
- hold
- sensor
- fixing rack
- pressing plate
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Abstract
The invention relates to a valve rod packing loss display device which is reasonable in structure, capable of accurately measuring packing loss quantity and applicable to valves with dynamic sealing valve rod packing, such as gate valves, check valves, ball valves, plug valves and plunger valves. When a spring loaded moving press plate displaces along with packing loss, a fixed micro stroke sensor can timely measure packing loss quantity, and a double moving loading system enables the moving press plate to still keep the sealing performance when displacing to the loss limit.
Description
Technical field
The present invention relates to a kind of stem packing loss display unit.
Background technique
Existing band valve rod compresses the valve of filler device, comprises the valves such as gate valve, stop valve, stopcock, plunger valve, bolt can be divided into be fixed and clamped and spring activity compression to the compression mode of filler.The mode that is fixed and clamped is after filler loss, as compressed filler not in time, appearance is leaked by valve rod and filler matching part, and spring loading activity compresses filler, though filler loss can be compensated, but appearance is also leaked by loss to a certain extent, and two kinds of compression modes all do not have filler loss State Diagnosis function, bring potential safety hazard to the valve of high-risk mixture condition.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, the stem packing loss display unit of energy Measurement accuracy filler breakage.
Technical solution of the present invention is:
A kind of stem packing loss display unit, comprise valve rod, valve gap, support, between valve rod and valve gap, filler is set, filler upper end arranges filler pressing sleeve, it is characterized in that: filler pressing sleeve upper end pressing sleeve is contained in the hold-down grid on hold-down bolt, arranges pressing plate disc spring above hold-down grid, the nut of hold-down bolt is pressed in pressing plate disc spring, one end of pressing plate displacement extension bar is connected with hold-down grid, and the other end nearside of pressing plate displacement extension bar arranges displacement transducer.
Displacement transducer has upper and lower two, is separately positioned on the both sides up and down of pressing plate displacement extension bar.
Institute's displacement sensors is loaded on fixing rack for sensor, and fixing rack for sensor is connected with support, between fixing rack for sensor and support, arrange thermal shield.
Displacement transducer is loaded on fixing rack for sensor by adjusting nut.
Institute's displacement sensors is loaded on fixing rack for sensor, and fixing rack for sensor is connected with hold-down bolt.
Below filler, Packing seat is set, filler disc spring is set below Packing seat.
The present invention is rational in infrastructure, and energy Measurement accuracy filler breakage, is applicable to the valve with motive sealing stem packing such as gate and valve, stop valve, ball valve, stopcock, plunger valve.When spring-loaded movable pressure plate is subjected to displacement along with filler loss, fixing micro travel sensor can measure the breakage of filler immediately, still can maintain sealability when dual-action loading system makes movable pressure plate be moved to the loss limit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the phase diagram after filler wearing and tearing.
Fig. 3 is the structural representation that fixing rack for sensor is connected with hold-down bolt.
Embodiment
A kind of stem packing loss display unit, comprise valve rod 1, valve gap 3, support 10, filler 2 is set between valve rod and valve gap, filler upper end arranges filler pressing sleeve 4, filler pressing sleeve upper end pressing sleeve is contained in the hold-down grid 5 on hold-down bolt 6, arranges pressing plate disc spring 7 above hold-down grid, and the nut 9 of hold-down bolt is pressed in pressing plate disc spring 7, one end of pressing plate displacement extension bar 17 is connected with hold-down grid, and the other end nearside of pressing plate displacement extension bar arranges displacement transducer 14.
Displacement transducer has upper and lower two, is separately positioned on the both sides up and down of pressing plate displacement extension bar.
Institute's displacement sensors is loaded on fixing rack for sensor 15, and fixing rack for sensor is connected with support 10, arranges thermal shield 13 between fixing rack for sensor and support.
Displacement transducer is loaded on fixing rack for sensor by adjusting nut 16.
Packing seat 11 is set below filler, filler disc spring 12 is set below Packing seat.Disc spring lining 8 is also had in figure.
Certainly, the present invention can also have other desired embodiment, and shown in illustration 3, displacement transducer is loaded on fixing rack for sensor 15a, and fixing rack for sensor is connected with hold-down bolt 6a, and below filler, available cylindrical spring 20 is contained in the hole of Packing seat 19.
When combined packing in use loss occurs, pressing plate butterfly spring 7 is compressed by hold-down grid and filler pressing sleeve at any time, guarantees sealability, and simultaneously fixing displacement transducer 14 shows the displacement that hold-down grid 5 generation followed by pressing plate displacement extension bar 17 at any time.
The limit position of combined packing loss can be set to the pre compressed magnitude that pressing plate butterfly spring 7 leaves 20% to 30%, as reached the limit position of this filler loss, filler butterfly spring (or spring) 12, promote Packing seat 11, make the self-tightening combined packing with V-type or wedge shape be issued to sealing in the synergy of spring force and medium power.
When filler service wear, pressing plate is subjected to displacement under the effect of butterfly spring force, and stroke inductor can show in time or report to the police.
Claims (5)
1. a stem packing loss display unit, comprise valve rod, valve gap, support, between valve rod and valve gap, filler is set, filler upper end arranges filler pressing sleeve, it is characterized in that: filler pressing sleeve upper end pressing sleeve is contained in the hold-down grid on hold-down bolt, arranges pressing plate disc spring above hold-down grid, the nut of hold-down bolt is pressed in pressing plate disc spring, one end of pressing plate displacement extension bar is connected with hold-down grid, and the other end nearside of pressing plate displacement extension bar arranges displacement transducer; Displacement transducer has upper and lower two, is separately positioned on the both sides up and down of pressing plate displacement extension bar.
2. stem packing loss display unit according to claim 1, is characterized in that: institute's displacement sensors is loaded on fixing rack for sensor, and fixing rack for sensor is connected with support, between fixing rack for sensor and support, arrange thermal shield.
3. stem packing loss display unit according to claim 2, is characterized in that: displacement transducer is loaded on fixing rack for sensor by adjusting nut.
4. stem packing loss display unit according to claim 1, is characterized in that: institute's displacement sensors is loaded on fixing rack for sensor, and fixing rack for sensor is connected with hold-down bolt.
5. the stem packing loss display unit according to claim 1,2,3 or 4, is characterized in that: arrange Packing seat below filler, arranges filler disc spring below Packing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194699.0A CN102748529B (en) | 2012-06-14 | 2012-06-14 | Valve rod packing loss display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194699.0A CN102748529B (en) | 2012-06-14 | 2012-06-14 | Valve rod packing loss display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102748529A CN102748529A (en) | 2012-10-24 |
| CN102748529B true CN102748529B (en) | 2015-01-07 |
Family
ID=47028932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210194699.0A Active CN102748529B (en) | 2012-06-14 | 2012-06-14 | Valve rod packing loss display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748529B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115196855A (en) * | 2022-09-16 | 2022-10-18 | 青岛融合光电科技有限公司 | Automatic measurement and automatic pushing system for loss of electric boosting electrode of carrier plate glass |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855995A (en) * | 1971-08-16 | 1974-12-24 | Bentley Lab | Ventricle assembly for pulsatile-type pump |
| CN201149099Y (en) * | 2008-01-24 | 2008-11-12 | 兰州高压阀门有限公司 | High-pressure flat plate gate valve |
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN202646902U (en) * | 2012-06-14 | 2013-01-02 | 南通高中压阀门有限公司 | Valve rod filling loss display device |
-
2012
- 2012-06-14 CN CN201210194699.0A patent/CN102748529B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855995A (en) * | 1971-08-16 | 1974-12-24 | Bentley Lab | Ventricle assembly for pulsatile-type pump |
| CN201149099Y (en) * | 2008-01-24 | 2008-11-12 | 兰州高压阀门有限公司 | High-pressure flat plate gate valve |
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN202646902U (en) * | 2012-06-14 | 2013-01-02 | 南通高中压阀门有限公司 | Valve rod filling loss display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102748529A (en) | 2012-10-24 |
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