CN102748529A - Valve rod packing loss display device - Google Patents
Valve rod packing loss display device Download PDFInfo
- Publication number
- CN102748529A CN102748529A CN2012101946990A CN201210194699A CN102748529A CN 102748529 A CN102748529 A CN 102748529A CN 2012101946990 A CN2012101946990 A CN 2012101946990A CN 201210194699 A CN201210194699 A CN 201210194699A CN 102748529 A CN102748529 A CN 102748529A
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- China
- Prior art keywords
- filler
- hold
- sensor
- pressing plate
- loss display
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- 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.)
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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 valves such as gate valve, stop valve, stopcock, plunger valve, can be divided into to the mode that compresses of filler that bolt compresses and the spring activity compresses.The mode that is fixed and clamped is after the filler loss; Like the untimely filler that compresses, leaking will appear in valve rod and filler matching part, and the spring-loaded activity compresses filler; Though can compensate the filler loss; But loss is leaked to a certain degree also will occurring, and two kinds compress mode and all do not have filler loss situation diagnostic function, brings potential safety hazard to the valve of high-risk medium operating mode.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, can accurately measure the stem packing loss display unit of filler breakage.
Technical solution of the present invention is:
A kind of stem packing loss display unit comprises valve rod, valve gap, support, between valve rod and valve gap, filler is set; The filler upper end is provided with the filler gland; It is characterized in that: filler gland upper end press-fits the hold-down grid that is sleeved on the hold-down bolt, and the hold-down grid top is provided with pressing plate dish spring, and the nut of hold-down bolt is pressed on the pressing plate dish 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 is provided with displacement transducer.
Displacement transducer has two up and down, is separately positioned on the both sides up and down of pressing plate displacement extension bar.
Said displacement transducer is loaded on the fixing rack for sensor, and fixing rack for sensor is connected with support, between fixing rack for sensor and support, thermal shield is set.
Displacement transducer is loaded on the fixing rack for sensor through adjusting nut.
Said displacement transducer is loaded on the fixing rack for sensor, and fixing rack for sensor is connected with hold-down bolt.
The filler below is provided with Packing seat, and the Packing seat below is provided with filler dish spring.
The present invention is rational in infrastructure, can accurately measure the filler breakage, is applicable to that gate and valve, stop valve, ball valve, stopcock, plunger valve etc. have the valve of motive sealing stem packing.When spring-loaded movable pressure plate was subjected to displacement along with the filler loss, fixing travel incognito journey sensor can be measured the breakage of filler immediately, still can maintain sealability when the dual-action loading system makes movable pressure plate be moved to the loss limit.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the phase diagram after the 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 comprises valve rod 1, valve gap 3, support 10, and filler 2 is set between valve rod and valve gap; The filler upper end is provided with filler gland 4; Filler gland upper end press-fits the hold-down grid 5 that is sleeved on the hold-down bolt 6, and the hold-down grid top is provided with pressing plate dish spring 7, and the nut 9 of hold-down bolt is pressed on the pressing plate dish 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 is provided with displacement transducer 14.
Displacement transducer has two up and down, is separately positioned on the both sides up and down of pressing plate displacement extension bar.
Said displacement transducer is loaded on the fixing rack for sensor 15, and fixing rack for sensor is connected with support 10, and thermal shield 13 is set between fixing rack for sensor and support.
Displacement transducer is loaded on the fixing rack for sensor through adjusting nut 16.
The filler below is provided with Packing seat 11, and the Packing seat below is provided with filler dish spring 12.Also has dish spring lining 8 among the figure.
Certainly, the present invention can also have other suitable embodiments, and shown in the illustration 3, displacement transducer is loaded on the fixing rack for sensor 15a, and fixing rack for sensor is connected with hold-down bolt 6a, and the available cylindrical spring 20 in filler below is contained in the hole of Packing seat 19.
When loss in use takes place combined packing, pressing plate butterfly spring 7 compresses through hold-down grid and filler gland at any time, guarantees sealability, and fixing simultaneously displacement transducer 14 shows that at any time pressing plate displacement extension bar 17 follows the displacement that hold-down grid 5 takes place.
The limit position of combined packing loss can be made as pressing plate butterfly spring 7 and leave 20% to 30% pre compressed magnitude; As reach the limit position of this filler loss; Filler butterfly spring (or spring) 12; Promote Packing seat 11, make self-tightening combined packing be issued to sealing in the synergy of spring force and medium power with V-type or wedge shape.
When the filler service wear, pressing plate is subjected to displacement under the effect of butterfly spring power, and the stroke inductor can in time show or report to the police.
Claims (6)
1. a stem packing loss display unit comprises valve rod, valve gap, support, between valve rod and valve gap, filler is set; The filler upper end is provided with the filler gland; It is characterized in that: filler gland upper end press-fits the hold-down grid that is sleeved on the hold-down bolt, and the hold-down grid top is provided with pressing plate dish spring, and the nut of hold-down bolt is pressed on the pressing plate dish 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 is provided with displacement transducer.
2. stem packing loss display unit according to claim 1 is characterized in that: displacement transducer has two up and down, is separately positioned on the both sides up and down of pressing plate displacement extension bar.
3. stem packing loss display unit according to claim 2, it is characterized in that: said displacement transducer is loaded on the fixing rack for sensor, and fixing rack for sensor is connected with support, between fixing rack for sensor and support, thermal shield is set.
4. stem packing loss display unit according to claim 3, it is characterized in that: displacement transducer is loaded on the fixing rack for sensor through adjusting nut.
5. stem packing loss display unit according to claim 2, it is characterized in that: said displacement transducer is loaded on the fixing rack for sensor, and fixing rack for sensor is connected with hold-down bolt.
6. according to claim 1,2,3,4 or 5 described stem packing loss display unit, it is characterized in that: the filler below is provided with Packing seat, and the Packing seat below is provided with filler dish spring.
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 true CN102748529A (en) | 2012-10-24 |
| CN102748529B 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) |
Cited By (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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102748529B (en) | 2015-01-07 |
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