CN102758964A - Low-loss self-compensating system for filler loss - Google Patents
Low-loss self-compensating system for filler loss Download PDFInfo
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- CN102758964A CN102758964A CN2012102376231A CN201210237623A CN102758964A CN 102758964 A CN102758964 A CN 102758964A CN 2012102376231 A CN2012102376231 A CN 2012102376231A CN 201210237623 A CN201210237623 A CN 201210237623A CN 102758964 A CN102758964 A CN 102758964A
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Abstract
The invention discloses a low-loss self-compensating system for filler loss. The low-loss self-compensating system comprises valve rods and valve covers, wherein a group of fillers are arranged between the valve rods and the valve covers; a group of internal compensation springs are arranged at the bottoms of the filler groups and/or in the middle of the groups of the fillers; filler pressing sleeves are arranged at the upper ends of the group of the fillers; filler pressing plates are pressed on the filler pressing sleeves; the lower ends of pressing bolts are fixedly connected with the valve covers; and the upper ends of pressing bolts are pressed mounted pressing nuts at the upper ends of the filler pressing plates. The low-loss self-compensating system has a reasonable structure; by utilizing axial force generated by the group of springs, the sealing is realized by radial expansion deformation generated by the combined filler, a function of pressure self-tightening on the fillers is generated by a combined action of the spring force and medium pressure when the filler loss is generated, and the action direction is consistent with the loss trending direction, so that the sealing effect is guaranteed. By utilizing internal and external compensation structures, a filler loss display function also can be realized.
Description
Technical field
The present invention relates to a kind of low loss filler loss self-compensating system.
Background technique
The live loaded of existing valve stem packing generally adopts the outside dish spring on the hold-down grid to load, and does not press self-tightening compensate function and filler loss Presentation Function in not having.
Summary of the invention
Technical solution of the present invention is:
A kind of low loss filler loss self-compensating system; Comprise valve rod, valve gap, it is characterized in that: charge group between valve rod and valve gap, the centre of the bottom of filler group and/or filler group are provided with interior counterbalance spring group; Filler group upper end is provided with the filler gland; Press-fit hold-down grid on the filler gland, the lower end and the valve gap of hold-down bolt are connected, and the upper end dress of hold-down bolt is pressed in the gland nut of hold-down grid upper end.
The filler group is two groups of wedge type combined packings; In the lower end of two groups of wedge type combined packings first cluster spring is set; Second cluster spring is set between two groups of wedge type combined packings; Counterbalance spring group in first, second cluster spring is formed is being provided with the external compensation cluster spring of rigidity greater than interior counterbalance spring group rigidity on the hold-down grid or between hold-down grid and the filler gland.
The external compensation cluster spring of rigidity greater than interior counterbalance spring group rigidity is being set on the hold-down grid or between hold-down grid and the filler gland; Pressing plate extension bar and hold-down grid are connected; Indicator fixing frame one end is installed on the hold-down bolt; The other end of indicator fixing frame is provided with displacement transducer, and displacement transducer has two up and down, is separately positioned on the both sides up and down of pressing plate extension bar.
The present invention is rational in infrastructure; Axial force with the cluster spring generation; Make combined packing produce the radial expansion distortion and realize sealing, when the filler loss, spring force and pressure medium cooperative action produce the effect of pressure self-tightening all the time to filler; Its action direction is consistent with consume trend direction, has guaranteed sealing effect.The inside and outside collocation structure of the present invention also can be realized filler loss Presentation Function.
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 structural representation of the embodiment of the invention 2.
Fig. 3 is embodiment 3 a structural representation.
Fig. 4 is embodiment 4 a structural representation.
Embodiment
Embodiment 1:
A kind of low loss filler loss self-compensating system; Comprise valve rod 1, valve gap 2; Charge group between valve rod and valve gap (V-type filler group or wedge shape filler group) 4, the bottom of filler group is provided with interior counterbalance spring group (disk spring group) 3, between filler group and interior counterbalance spring group (disk spring group), Packing seat 5 is set also; Filler group upper end is provided with filler gland 6; Press-fit hold-down grid 7 on the filler gland, the lower end and the valve gap of hold-down bolt 8 are connected, and the upper end dress of hold-down bolt is pressed in the gland nut 9 of hold-down grid upper end.The sealing seat 10 of counterbalance spring group below in being arranged in addition among the figure.Fig. 1 representes the left side that original state disk spring group 3 is driven plain.Fig. 1 right-hand part representes to work as filler in using process generation loss (breakage D), and disk spring group 3 is followed compensation, and the filler group realizes sealing under spring force and pressure medium cooperative action.
Embodiment 2:
Interior counterbalance spring group adopts the cylindrical spring group 12 that is loaded in the spring seat 11, and all the other are with embodiment 1.
Embodiment 3:
A kind of low loss filler loss self-compensating system; Comprise valve rod 1b, valve gap 2b; Charge group 4b between valve rod and valve gap, filler group upper end is provided with filler gland 6b, press-fits hold-down grid 7b on the filler gland; The lower end and the valve gap of hold-down bolt are connected, and the upper end dress of hold-down bolt 8b is pressed in the gland nut 9b of hold-down grid upper end.The filler group is two groups of wedge type combined packings; The first cluster spring 3b is set in the lower end of two groups of wedge type combined packings; The second cluster spring 3c is set between two groups of wedge type combined packings; Counterbalance spring group in first, second cluster spring is formed is being provided with the external compensation cluster spring 13 of rigidity greater than interior counterbalance spring group rigidity between (or hold-down grid and filler gland) on the hold-down grid 7b.Between filler group and interior counterbalance spring group, Packing seat 5b is set also.Be arranged on the sealing seat 10b of first cluster spring 3b below among the figure in addition.Can realize the second compensation that carries out the internal compensation loss after the loss of first external compensation filler having improved the gland sealed reliability.
Embodiment 4:
A kind of low loss filler loss self-compensating system; Comprise valve rod 1a, valve gap, dress V-type filler group 4a between valve rod and valve gap, the bottom of V-type filler group is provided with interior counterbalance spring group (cylindrical spring group) 12a; V-type filler group upper end is provided with the filler gland; Press-fit hold-down grid 7a on the filler gland, the lower end of hold-down bolt 8a and valve gap 2a are connected, and the upper end dress of hold-down bolt is pressed in the gland nut of hold-down grid upper end.
External compensation cluster spring (the dish spring group) 13a of rigidity greater than interior counterbalance spring group rigidity is being set on the hold-down grid or between hold-down grid and the filler gland; Pressing plate extension bar 15 is connected with hold-down grid 7a; Indicator fixing frame 14 1 ends are installed on the hold-down bolt 8a; The other end of indicator fixing frame is provided with displacement transducer 16, and displacement transducer has two up and down, is separately positioned on the both sides up and down of pressing plate extension bar.
Fig. 4 valve rod axis left part is represented initial impaction state; Fig. 4 valve rod axis right part is represented the state of (breakage D) after the V-type filler group 4a loss; But the loss situation of displacement transducer 16 detection at any time fillers, when outside dish spring group 13a is in full compensating coefficient, promptly filler is in wear limit one time; The lower cylindrical spring group of inner rigidity is carried out secondary and is loaded compensation, makes the V-type filler under the synergy of spring force and medium power, realize the sealing of function admirable.
Claims (3)
1. one kind low loss filler loss self-compensating system; Comprise valve rod, valve gap, it is characterized in that: charge group between valve rod and valve gap, the centre of the bottom of filler group and/or filler group are provided with interior counterbalance spring group; Filler group upper end is provided with the filler gland; Press-fit hold-down grid on the filler gland, the lower end and the valve gap of hold-down bolt are connected, and the upper end dress of hold-down bolt is pressed in the gland nut of hold-down grid upper end.
2. low loss filler loss self-compensating system according to claim 1; It is characterized in that: the filler group is two groups of wedge type combined packings; In the lower end of two groups of wedge type combined packings first cluster spring is set; Second cluster spring is set between two groups of wedge type combined packings, and counterbalance spring group in first, second cluster spring is formed is being provided with the external compensation cluster spring of rigidity greater than interior counterbalance spring group rigidity on the hold-down grid or between hold-down grid and the filler gland.
3. low loss filler loss self-compensating system according to claim 1; It is characterized in that: the external compensation cluster spring of rigidity greater than interior counterbalance spring group rigidity is being set on the hold-down grid or between hold-down grid and the filler gland; Pressing plate extension bar and hold-down grid are connected, and indicator fixing frame one end is installed on the hold-down bolt, and the other end of indicator fixing frame 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 extension bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210237623 CN102758964B (en) | 2012-07-11 | 2012-07-11 | Low-loss self-compensating system for filler loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210237623 CN102758964B (en) | 2012-07-11 | 2012-07-11 | Low-loss self-compensating system for filler loss |
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| CN102758964A true CN102758964A (en) | 2012-10-31 |
| CN102758964B CN102758964B (en) | 2013-07-31 |
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| CN 201210237623 Active CN102758964B (en) | 2012-07-11 | 2012-07-11 | Low-loss self-compensating system for filler loss |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697228A (en) * | 2013-12-18 | 2014-04-02 | 中国航天科技集团公司第六研究院第十一研究所 | Device capable of indicating packing compression status of valve stem |
| CN103851256A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Push rod bolt and packing pressing structure |
| CN104110496A (en) * | 2014-04-02 | 2014-10-22 | 衢州兰玲机电科技有限公司 | Sealing structure for rotary shaft of flue gas valve |
| CN104913107A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Flexible sealing structure for valve deck and valve rod of one-way valve |
| CN104913108A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Elastic sealing structure for valve deck and valve rod of one-way valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202021104690U1 (en) * | 2021-09-01 | 2021-10-04 | Samson Aktiengesellschaft | Control valve unit with a measuring device |
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| CH476939A (en) * | 1966-11-21 | 1969-08-15 | Dueker Eisenwerk | Gate valve for aggressive media |
| CN2520444Y (en) * | 2001-11-29 | 2002-11-13 | 周志伟 | Stop valve,gate valve packing seal energy-accumulating device |
| CN101349354A (en) * | 2008-09-12 | 2009-01-21 | 江苏九龙阀门制造有限公司 | Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve |
| CN201250918Y (en) * | 2007-09-17 | 2009-06-03 | 温州球豹阀门有限公司 | Dual-elastic sliding seal stiff-seal high-temperature high-pressure ball valve |
| CN201434143Y (en) * | 2009-06-18 | 2010-03-31 | 上海凯工阀门有限公司 | Spring-loaded packing seal structure |
| CN201902582U (en) * | 2010-12-09 | 2011-07-20 | 无锡市亚迪流体控制技术有限公司 | Parallel gate valve |
| CN202252312U (en) * | 2011-10-10 | 2012-05-30 | 杭州耐特阀门有限公司 | Leakage-free combined packing assembly |
| CN202733150U (en) * | 2012-07-11 | 2013-02-13 | 南通高中压阀门有限公司 | Low-dissipation packing loss self-compensating system |
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2012
- 2012-07-11 CN CN 201210237623 patent/CN102758964B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH476939A (en) * | 1966-11-21 | 1969-08-15 | Dueker Eisenwerk | Gate valve for aggressive media |
| CN2520444Y (en) * | 2001-11-29 | 2002-11-13 | 周志伟 | Stop valve,gate valve packing seal energy-accumulating device |
| CN201250918Y (en) * | 2007-09-17 | 2009-06-03 | 温州球豹阀门有限公司 | Dual-elastic sliding seal stiff-seal high-temperature high-pressure ball valve |
| CN101349354A (en) * | 2008-09-12 | 2009-01-21 | 江苏九龙阀门制造有限公司 | Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve |
| CN201434143Y (en) * | 2009-06-18 | 2010-03-31 | 上海凯工阀门有限公司 | Spring-loaded packing seal structure |
| CN201902582U (en) * | 2010-12-09 | 2011-07-20 | 无锡市亚迪流体控制技术有限公司 | Parallel gate valve |
| CN202252312U (en) * | 2011-10-10 | 2012-05-30 | 杭州耐特阀门有限公司 | Leakage-free combined packing assembly |
| CN202733150U (en) * | 2012-07-11 | 2013-02-13 | 南通高中压阀门有限公司 | Low-dissipation packing loss self-compensating system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697228A (en) * | 2013-12-18 | 2014-04-02 | 中国航天科技集团公司第六研究院第十一研究所 | Device capable of indicating packing compression status of valve stem |
| CN103697228B (en) * | 2013-12-18 | 2015-10-21 | 中国航天科技集团公司第六研究院第十一研究所 | A kind of device with instruction stem packing impaction state |
| CN103851256A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Push rod bolt and packing pressing structure |
| CN104110496A (en) * | 2014-04-02 | 2014-10-22 | 衢州兰玲机电科技有限公司 | Sealing structure for rotary shaft of flue gas valve |
| CN104913107A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Flexible sealing structure for valve deck and valve rod of one-way valve |
| CN104913108A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Elastic sealing structure for valve deck and valve rod of one-way valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102758964B (en) | 2013-07-31 |
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