CN207112079U - A kind of valve outer valve stem on-line pressure sealant fixture - Google Patents
A kind of valve outer valve stem on-line pressure sealant fixture Download PDFInfo
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- CN207112079U CN207112079U CN201720884675.6U CN201720884675U CN207112079U CN 207112079 U CN207112079 U CN 207112079U CN 201720884675 U CN201720884675 U CN 201720884675U CN 207112079 U CN207112079 U CN 207112079U
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- stuffing
- trapezoidal thread
- fixture
- valve
- sealing clamp
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Abstract
The utility model discloses a kind of valve outer valve stem on-line pressure sealant fixture, including valve rod, the stuffing-box fixture being axially fixed in by fastening bolt on base, described stuffing-box fixture interior sealing is connected with trapezoidal thread sealing clamp, the sealed bottom bonding pad gland of stuffing-box fixture, the lower seal of gland is connected with packing press ring sealing clamp, and the trapezoidal thread section and smooth bar part of valve rod are respectively by trapezoidal thread sealing clamp（11）With stuffing-box fixture（12）In realize suitching type seal.The beneficial effects of the utility model are：It is rational in infrastructure, it is easy to use, it is not required to get angry, does not produce spark and electrostatic, when implementing on-line pressure sealant to inflammable and explosive medium, operating risk is being greatly lowered；Materialization damage is not produced to valve pressure-bearing position and structure, on the original security performance of valve without influence.
Description
Technical field
It the utility model is related to valve on-line pressure sealant technical field, more particularly to a kind of valve outer valve stem on-line pressure sealant folder
Tool.
Background technology
The leakage of valve stuffing box of the prior art drills using at stuffing-box, is then injected into sealant progress
Sealing, this operating method have the disadvantages that：
（One）Operating risk is high：
If leaking medium is inflammable and explosive, using spark may be produced during drilling, so as to trigger fire,
Explode, cause casualties and the serious accident such as property loss；
Valve stuffing box on-line pressure sealant operation for HTHP, in boring procedure, operating risk is high, is worn in hole drill
Moment, the medium of HTHP is very likely spouting, causes operator's casualty accident.
（Two）Valve bearing structure is formed and damaged, intensity is damaged, and the safe handling to valve causes a hidden trouble.
Prior art is directly drilled on valve stuffing box wall, is then injected into sealant to realize on-line pressure sealant.By
In one of main pressure-bearing position of stuffing-box and valve, the perforate on its wall, its bearing capacity will necessarily be weakened.Seriously
When, it can cause crackle in tapping, eventually cause whole stuffing-box and burst apart, lead to security incident.
Utility model content
The utility model provides a kind of valve outer valve stem on-line pressure sealant fixture, rational in infrastructure, easy to use, is not required to move
Fire, spark and electrostatic are not produced, when implementing on-line pressure sealant to inflammable and explosive medium, operating risk is being greatly lowered；To valve
Pressure-bearing position and structure do not produce materialization damage, on the original security performance of valve without influence.
In order to solve the above technical problems, the utility model provides a kind of valve outer valve stem on-line pressure sealant fixture, including
Valve rod, the stuffing-box fixture being axially fixed in by fastening bolt on base, described stuffing-box fixture interior sealing are connected with ladder
Shape thread seal fixture, the sealed bottom bonding pad gland of stuffing-box fixture, the lower seal of gland are connected with filler
Pressure ring sealing clamp, the trapezoidal thread section and smooth bar part of valve rod are realized by trapezoidal thread sealing clamp and stuffing-box fixture respectively
Suitching type seals.
As a preferable technical scheme of the present utility model, the bottom of the stuffing-box fixture is provided with polished rod seal portion
Point, polished rod seal part is provided with groove, and fluid sealant is provided with the inside of the groove, and the outside of fluid sealant is provided with elastic seal packing,
Elastic seal packing is tightly connected the smooth bar part of valve rod, and trapezoidal spiral shell is fixed in the top of described stuffing-box fixture by bolt one
Line sealing clamp, trapezoidal thread sealing clamp extend into stuffing-box fixture and coordinated with stuffing-box fixture gap, trapezoidal thread
The trapezoidal thread groove being engaged with the trapezoidal thread of valve rod is provided with sealing clamp, elastomeric material is provided with trapezoidal thread groove, ladder
Shape thread groove is communicated to the gap between trapezoidal thread sealing clamp and stuffing-box fixture by through hole, and sealing has been suppressed in gap
Glue one.
It is solid by bolt two as a preferable technical scheme of the present utility model, described packing press ring sealing clamp
Fixed, the junction of packing press ring sealing clamp top and gland is provided with groove, and the inside of groove is provided with fluid sealant two, sealing
The outside of glue is provided with elastic filler, the bottom of elastic filler outer side seal bonding pad gland, packing press ring sealing clamp it is interior
Side is provided with fluid sealant three.
As a preferable technical scheme of the present utility model, described base is fixed on bonnet by connecting bolt
On.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
It is rational in infrastructure, it is easy to use, it is not required to get angry, does not produce spark and electrostatic, to inflammable and explosive medium out tape densification
Feng Shi, operating risk is being greatly lowered；Materialization damage is not produced to valve pressure-bearing position and structure, to the original peace of valve
Full performance is without influence.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is cross section structure schematic diagram of the present utility model；
Fig. 3 is 1-1 of the present utility model mplifying structure schematic diagram；
Fig. 4 is 1-2 of the present utility model mplifying structure schematic diagram；
Fig. 5 is trapezoidal thread sealing clamp structure schematic diagram of the present utility model；
Fig. 6 is trapezoidal thread sealing clamp partial internal structure enlarged drawing of the present utility model.
In figure, 1, base, 2, packing press ring sealing clamp, 3, support, 4, valve rod, 5, bolt two, 6, bolt one, 7, sealing
Glue one, 8, fastening bolt, 9, disc spring, 10, fluid sealant three, 11, trapezoidal thread sealing clamp, 12, stuffing-box fixture, 13, gland
Bolt, 14, gland, 15, connecting bolt, 16, bonnet, 17, fluid sealant, 18, elastic seal packing, 19, elastic filler,
20th, trapezoidal thread groove, 21, elastomeric material, 22, through hole, fluid sealant 2 23.
Embodiment
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
As shown in figs 1 to 6, a kind of valve outer valve stem on-line pressure sealant fixture described in the present embodiment, including valve rod 4, lead to
The stuffing-box fixture 12 that fastening bolt 8 is axially fixed on base 1 is crossed, the described interior sealing of stuffing-box fixture 12 is connected with trapezoidal
Thread seal fixture 11, the sealed bottom bonding pad gland 14 of stuffing-box fixture 12, the lower seal connection of gland 14
There is packing press ring sealing clamp 2, the trapezoidal thread section and smooth bar part of valve rod 4 are respectively by trapezoidal thread sealing clamp 11 and filler
Letter fixture 12 realizes that suitching type seals.
Wherein, in the present embodiment, the bottom of the stuffing-box fixture 12 is provided with polished rod seal part, polished rod seal part
Provided with groove, fluid sealant 17 is provided with the inside of the groove, the outside of fluid sealant 17 is provided with elastic seal packing 18, and elastic packing is filled out
Material 18 is tightly connected the smooth bar part of valve rod 4, and the top of described stuffing-box fixture 12 is close by the fixation trapezoidal thread of bolt 1
Binder tool 11, trapezoidal thread sealing clamp 11 extend into stuffing-box fixture 12 and coordinated with the gap of stuffing-box fixture 12, trapezoidal
The trapezoidal thread groove 20 being engaged with the trapezoidal thread of valve rod 4 is provided with thread seal fixture 11, is provided with trapezoidal thread groove 20
Elastomeric material 21, trapezoidal thread groove 20 are communicated between trapezoidal thread sealing clamp 11 and stuffing-box fixture 12 by through hole 22
Gap, fluid sealant 1 has been suppressed in gap.
Wherein, in the present embodiment, described packing press ring sealing clamp 2 is fixed by bolt 25, packing press ring sealing
The junction of the top of fixture 2 and gland 14 is provided with groove, and the inside of groove is provided with fluid sealant 2 23, fluid sealant 2 23 outside
Side is provided with elastic filler 19, the bottom of the outer side seal bonding pad gland 14 of elastic filler 19, packing press ring sealing clamp 2 it is interior
Side is provided with fluid sealant 3 10.
Wherein, in the present embodiment, described base 1 is fixed on bonnet 16 by connecting bolt 15.
Its sealing mechanism is as follows;
When valve fully opens, stuffing-box fixture 12 realizes the sealing of valve rod smooth bar part；
First, it is assumed that valve is in fully open state, now, the part that valve rod 4 exposes outside gland is all
Polished rod.
When valve proximity is closed, trapezoidal thread sealing clamp 11 realizes the sealing of the trapezoidal thread of valve rod 4；
Valve undertakes valve rod smooth bar part in closing process, and during close to completely closed state by stuffing-box fixture
Sealing, and gradually switch to the sealing for the trapezoidal thread that valve rod 4 is undertaken by trapezoidal thread sealing clamp 11
When valve completely closes, valve rod polished rod seal switches to trapezoidal thread sealing.
Valve is in the completely closed state, and now, valve rod 4 exposes all trapezoidal threads in part outside gland 14
Part.Now, the sealing of the trapezoidal type screw thread of valve rod 4 is realized by trapezoidal thread sealing clamp 11 completely.
The sealing mechanism of trapezoidal thread sealing clamp 11：
The inner side of trapezoidal thread sealing clamp 11 offers the acme thread groove 20 consistent with the trapezoidal thread of valve rod 4,
Before trapezoidal thread sealing clamp 11 is installed, the elastic filler of dimension is first bumped into its trapezoidal thread groove 20, when trapezoidal spiral shell
After the installation of line sealing clamp 11, now, it is between the two clearance fit relationship in the interior intracavitary of stuffing-box fixture 12；
Multiple through holes 22 arranged side by side are offered in the thread groove 20 of trapezoidal thread sealing clamp 11, when past stuffing-box fixture 12 and trapezoidal spiral shell
After injecting enough sealants in gap between line sealing clamp 11, injecting pressure P is gradually formed, in injecting pressure P work
Under, elastic filler is progressively pushed in the acme thread groove 22 of valve rod 4, and with the injection of sealant, injecting pressure P gradually increases
Greatly, final elastic filler is deformed, and is close to screw rod and is realized sealing.
Sealant used in this programme, it is the sealant of high content of graphite.When valve rod moves up and down, with trapezoidal spiral shell
Line sealing clamp makees shearing motion to sealant jointly, due to sealant for it is flexible, almost without hardness and there is self-lubricating property
Graphite material, therefore do not interfere with the motion of valve rod.
Packing press ring sealing clamp 2, realize the clearance seal between packing gland and stuffing-box.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, although the utility model is disclosed above with preferred embodiment, but be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (4)
- A kind of 1. valve outer valve stem on-line pressure sealant fixture, it is characterised in that：Including valve rod（4）, pass through fastening bolt（8）Axially It is fixed on base（1）On stuffing-box fixture（12）, described stuffing-box fixture（12）Interior sealing is connected with trapezoidal thread sealing Fixture（11）, stuffing-box fixture（12）Sealed bottom bonding pad gland（14）, gland（14）Lower seal connection There is packing press ring sealing clamp（2）, valve rod（4）Trapezoidal thread section and smooth bar part respectively by trapezoidal thread sealing clamp（11） With stuffing-box fixture（12）Realize that suitching type seals.
- A kind of 2. valve outer valve stem on-line pressure sealant fixture according to claim 1, it is characterised in that the stuffing-box folder Tool（12）Bottom be provided with polished rod seal part, polished rod seal part is provided with groove, and fluid sealant is provided with the inside of the groove（17）, Fluid sealant（17）Outside be provided with elastic seal packing（18）, elastic seal packing（18）It is tightly connected valve rod（4）Polished rod portion Point, described stuffing-box fixture（12）Top pass through bolt one（6）Fixed trapezoidal thread seal fixture（11）, trapezoidal thread is close Binder has（11）It extend into stuffing-box fixture（12）In and with stuffing-box fixture（12）Gap coordinates, trapezoidal thread sealing clamp （11）Inside it is provided with and valve rod（4）The trapezoidal thread groove that is engaged of trapezoidal thread（20）, trapezoidal thread groove（20）It is interior to be provided with elasticity Material（21）, trapezoidal thread groove（20）Pass through through hole（22）It is communicated to trapezoidal thread sealing clamp（11）With stuffing-box fixture（12） Between gap, suppressed fluid sealant one in gap（7）.
- A kind of 3. valve outer valve stem on-line pressure sealant fixture according to claim 1, it is characterised in that described filler pressure Ring sealing clamp（2）Pass through bolt two（5）It is fixed, packing press ring sealing clamp（2）Top and gland（14）Junction Provided with groove, the inside of groove is provided with fluid sealant two（23）, fluid sealant two（23）Outside be provided with elastic filler（19）, elasticity fills out Material（19）Outer side seal bonding pad gland（14）Bottom, packing press ring sealing clamp（2）Inner side be provided with fluid sealant three （10）.
- A kind of 4. valve outer valve stem on-line pressure sealant fixture according to claim 1, it is characterised in that described base （1）Pass through connecting bolt（15）It is fixed on bonnet（16）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884675.6U CN207112079U (en) | 2017-07-20 | 2017-07-20 | A kind of valve outer valve stem on-line pressure sealant fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884675.6U CN207112079U (en) | 2017-07-20 | 2017-07-20 | A kind of valve outer valve stem on-line pressure sealant fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207112079U true CN207112079U (en) | 2018-03-16 |
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ID=61585107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720884675.6U Active CN207112079U (en) | 2017-07-20 | 2017-07-20 | A kind of valve outer valve stem on-line pressure sealant fixture |
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|---|---|
| CN (1) | CN207112079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541957A (en) * | 2019-06-27 | 2019-12-06 | 中海油(福建)应急维修有限责任公司 | Be applied to plugging device of liquefied natural gas valve leak hunting department |
-
2017
- 2017-07-20 CN CN201720884675.6U patent/CN207112079U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541957A (en) * | 2019-06-27 | 2019-12-06 | 中海油(福建)应急维修有限责任公司 | Be applied to plugging device of liquefied natural gas valve leak hunting department |
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