CN207122648U - A kind of valve packing sealing structure - Google Patents
A kind of valve packing sealing structure Download PDFInfo
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- CN207122648U CN207122648U CN201721040185.4U CN201721040185U CN207122648U CN 207122648 U CN207122648 U CN 207122648U CN 201721040185 U CN201721040185 U CN 201721040185U CN 207122648 U CN207122648 U CN 207122648U
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Abstract
The utility model discloses a kind of valve packing sealing structure, including valve body, valve rod, the first packing layer, the second packing layer, packing ring and gland, valve rod runs through gland and valve body, the packing groove of an annular is formed between valve rod and valve body, packing ring is arranged on the bottom of packing groove, and the first packing layer and the second packing layer are followed successively by above packing ring；First packing layer is filled by graphite packing to be formed, for realizing effective sealing to water or high-temperature steam；Second packing layer is filled by vermiculite or mica filler and formed, for realizing effective sealing to high temperature and Strong oxdiative corrosive medium；Gland is used to compress the second packing layer.Valve packing sealing structure of the present utility model can avoid the failure contacted with water, and can realize effective sealing under high temperature and strong corrosive medium working condition.
Description
Technical field
The utility model belongs to solar energy thermal-power-generating field and valve applications field, and in particular to a kind of fused salt valve is filled out
Expect sealing structure.
Background technology
Valve is that oil, chemical industry, power station, long-distance transport pipes, papermaking, nuclear industry, various cryogenic engineerings, aerospace and ocean are adopted
Control unit in the fluid delivery systems such as oil, have water conservancy diversion, cut-off, regulation, throttle, prevent adverse current, shunting, overflow pressure or pressure release
Etc. function.Valve can be used for controlling empty gas and water, steam, various aggressive chemistry medium, mud, oil product, liquid metal and radiation
The flowing of all kinds fluids such as property fluid.The operating pressure of valve can be from vacuum to 1000MPa, and operating temperature is from -269 DEG C
Ultralow temperature to 1430 DEG C of high temperature.
Valve packing as valve sealing device, for ensure medium do not leak outside, the hair such as system safety and normal operation
Wave important function.Conventional valve packing has polytetrafluoroethylene (PTFE), soft graphite etc., but polytetrafluoroethylene (PTFE) is generally used for temperature not
Mixture condition more than 200 DEG C, the application of hot conditions flexible graphite packing is more, such as in thermoelectricity power station, power plant for self-supply etc.
Industry high temperature steam pipeline valve etc..But for medium for high temperature and with mordant special operation condition, although graphite packing
Higher temperature is resistant to, but graphite is easy to be oxidized under hot conditions, and oxidizing corrosion occurs.For other resistance to
High-temperature material, the filler of the enough media-resistant corrosion of and can, such as vermiculite filler and mica filler.Vermiculite filler and mica filler are by mineral
Matter extraction is process, and their granularity is larger, by pressing molding, is had for tolerance high temperature and severe corrosive fine
Effect, but vermiculite filler and mica filler are very easy to be dissolved in water, so as to cause the mistake of vermiculite filler or mica filler
Effect.
The characteristics of can not being contacted for vermiculite filler or mica filler with water, there are many enterprises and technical staff to use air pressure
The method of test, intensity and seal tightness test, including valve delivery test and system integration and test experiment, test(ing) medium are carried out to valve
For pressure-air.For gas pressure test in field, vermiculite filler or cloud can actually be avoided as test(ing) medium using pressure-air
Contact of female filler with water, but the system integration and test stage is arrived, consider the security and operability of equipment, often more use
Scheme of the hydraulic pressure test as system integration and test, inevitably makes filler be contacted with water here, so as to cause valve packing to seal
Failure, valve blocking is gently then caused, operation is not smooth, weight then causes medium to leak outside, system shutdown etc., or even furthermore causes personnel to hinder
Die, environmental pollution etc..
Utility model content
In order to solve above-mentioned technical problem, the utility model proposes a kind of valve packing sealing structure, it can
Cause to fail when avoiding contacting with water, and can effectively realize effective sealing under high temperature and strong corrosive medium operating mode.
The technical solution adopted in the utility model is：
A kind of valve packing sealing structure, including valve body, valve rod, the first packing layer, the second packing layer, packing ring and
Gland, the valve rod run through the gland and the valve body, shape between the valve rod and the valve body
Into the packing groove of an annular, the packing ring is arranged on the bottom of the packing groove, is followed successively by above the packing ring described
First packing layer and second packing layer, first packing layer is filled by graphite packing to be formed, second packing layer by
Vermiculite or mica filler fill to be formed, and the gland is used to compress second packing layer.
Preferably, filler spacer ring is provided between first packing layer and second packing layer.
Preferably, the bottom of first packing layer sets a temperature measuring equipment, the temperature measuring equipment passes through in the valve sheet
Body perforate is simultaneously penetrated in the valve body, for measuring the bottom temp of first packing layer.
Preferably, the gland includes, gland covers and cover clamp, the valve rod cover and the pressure through the gland
Cover plate, the gland set contact with second packing layer, and the cover clamp compresses second filler by gland set
Layer.
Preferably, the gland is connected by screw bolt and nut with the valve body, the nut and the pressure
Disc spring is provided between lid or the valve body, for gland described in elastic compression.
Preferably, valve packing sealing structure also includes the 3rd packing layer, the 3rd packing layer is filled out positioned at described second
The top of the bed of material, the 3rd packing layer is filled by graphite packing or gum filler to be formed, and the gland is used to compress institute
State the 3rd packing layer.
Compared with prior art, advantageous effects of the present utility model are：
The reasonable disposition that the utility model passes through packing ring and valve rod, it is possible to reduce medium penetrates into packing layer and filled out to corrode
Material, by the design of the first packing layer and the second packing layer, enables valve packing sealing structure effectively to pass through hydraulic pressure test
And system integration and test test, it is effectively prevented from the second packing layer and is contacted with the direct of water, in actual moving process, the enough profits of and can
The reliable and stable operation of valve packing sealing structure is realized with the second packing layer, avoids sealing device from leaking outside；
The utility model can monitor the temperature of the first packing layer in real time by setting temperature measuring equipment, monitor the fortune of filler
Market condition, accomplish the real-time monitoring of valve packing sealing structure operating condition；
The utility model is by setting disc spring, after filler wears, can ensure the pretightning force of filler by disc spring,
Make packing seal reliable.
Certainly, implement any product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
Fig. 1 is a kind of structural representation of valve packing sealing structure of the present utility model.
In figure, 1- valve bodies；2- packing rings；The packing layers of 3- first；4- filler spacer rings；The packing layers of 5- second；6- disc springs；
7- cover clamps；8- gland sets；9- temperature measuring equipments；10- valve rods.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Each embodiment of type is explained in detail.
As shown in figure 1, a kind of valve packing sealing structure, including valve body 1, valve rod 10, the first packing layer 3, second
Packing layer 5, packing ring 2 and gland, valve rod 10 run through valve body 1, and an annular is formed between valve rod 10 and valve body 1
Packing groove, packing ring 2 is arranged on the bottom of packing groove, and the top of packing ring 2 is followed successively by the first packing layer 3 and the second packing layer
5, the first packing layer 3 is filled by graphite packing to be formed, and the second packing layer 5 is filled by vermiculite or mica filler to be formed, and valve rod 10 passes through
Gland is worn, gland is used to compress the second packing layer 5.
Packing ring 2 is arranged on the bottom of packing groove, by rationally setting the fit clearance of packing ring 2 and valve rod 10, makes to fill out
Material ring 2 does not influence the rotation or elevating movement of valve rod 10, and controls the gap of packing ring 2 and valve rod 10, reduces technique and is situated between
Matter is penetrated into the first packing layer 3 by both fit clearances.
Valve sealing filler includes the first packing layer 3 and the second packing layer 5, and the first packing layer 3 is graphite packing, and second fills out
The bed of material 5 is vermiculite or mica filler.Vermiculite or mica filler have the characteristics of high temperature resistant and Strong oxdiative corrosive medium, but
It is that vermiculite or mica filler can not contact with water, in actual use, when value pressure test or system integration and test pressure testing, valve
Door inevitably needs to carry out sealing and pressure test with water.For graphite packing, as a large amount of in Steam-Water System in Power Plant
The airtight and watertight padding used, have and use the characteristics of wide, reliable, under the conditions of water or high-temperature steam, can realize effective
Sealing, however graphite packing can not media-resistant strong oxidizing property corrosion, under the contact with strong oxidizing property corrosive medium, graphite
Filler can slowly oxide etch, slowly disappear, so as to cause the leakage at filler.The utility model is made by the combination of filler
With, solve when valve is operated in high temperature and strong oxidizing property corrosive medium, valve can safe and stable operation, do not leak outside
Phenomenon.First packing layer 3 of the present utility model is close to the side of packing ring 2, when valve is surveyed in hydraulic pressure strength test and sealing
During examination, effective sealing of graphite packing can be utilized, ensures stable operation of the valve under measurement condition, does not leak outside.
Under accidental conditions, the processing medium of valve for high temperature and has the Korrosionsmedium of strong oxidizing property, when valve runs one section
Between, it is possible to penetrated into by the gap of valve rod 10 and packing ring 2 in the first packing layer 3, erode some or all stones
Black filler, although the first packing layer 3 is corroded, because the second packing layer 5 employs high temperature resistant and strong oxidizing property corrosion
The vermiculite or mica filler of medium, the valve normal operation under the conditions of any nominal situation can be ensured, will not be occurred outside valve
Leak phenomenon.
In one embodiment of the present utility model, filler spacer ring 4 is provided between the first packing layer 3 and the second packing layer 5.
By the setting of filler spacer ring 4, on the one hand pass through the cooperation of filler spacer ring 4 and valve rod 10, it is possible to reduce have penetrated into first and fill out
The processing medium of the bed of material 3 continues to penetrate at the second packing layer 5；On the other hand, pressure can also be played by filler spacer ring 4 to fill out
The effect of material, make filler distribution of force more uniform.
In one embodiment of the present utility model, the bottom of the first packing layer 3 sets a temperature measuring equipment 9, and temperature measuring equipment 9 is logical
Cross in the perforate of valve body 1 and penetrate in valve body 1, for measuring the bottom temp of the first packing layer 3.Pass through temperature measuring equipment
9, the temperature of the bottom of the first packing layer 3 can be detected constantly, detected whether that processing medium is penetrated into the first packing layer 3 and corroded
Filler.
In one embodiment of the present utility model, gland includes gland set 8 and cover clamp 7, and valve rod 10 is through pressure
Lid set 8 and cover clamp 7, gland set 8 are used to contact with the second packing layer 5, and cover clamp 7 is filled out for compressing second by gland set 8
The bed of material 5.Conventional gland is using gland set 8 and the design of the integration of cover clamp 7, and integrated design is once in gland
When having mismatch error between valve rod 10, gland discontinuity, the mill between gland and valve rod 10 is easily caused
Damage, cause valve operation not smooth.By segment design, valve rod 10 press against gland through gland set 8 and cover clamp 7, cover clamp 7
Set 8, by rationally coordinating, gland set 8 is set equably to compress the second packing layer 5, so that uniform filling stress, ensures that filler has
Effect sealing.
In one embodiment of the present utility model, gland is connected by screw bolt and nut with valve body 1, nut
Disc spring 6 is provided between gland or valve body 1, for elastic compression gland.By setting disc spring 6, can fill out
After material wears, by the pretightning force of the additional fillers gland of disc spring 6, ensure effective sealing of filler.
In one embodiment of the present utility model, valve packing sealing structure also includes the 3rd packing layer, the 3rd filler
Layer is located at the top of the second packing layer 5, and the 3rd packing layer is filled by graphite packing or gum filler to be formed, and gland is used to press
The filler of tight 3rd packing layer.By setting the 3rd packing layer, for preventing external moisture from entering.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (6)
1. a kind of valve packing sealing structure, it is characterised in that including valve body, valve rod, the first packing layer, the second filler
Layer, packing ring and gland, the valve rod run through the gland and the valve body, the valve rod and the valve
The packing groove of an annular is formed between body, the packing ring is arranged on the bottom of the packing groove, the top of the packing ring
First packing layer and second packing layer are followed successively by, first packing layer is filled by graphite packing to be formed, and described
Two packing layers are filled by vermiculite or mica filler and formed, and the gland is used to compress second packing layer.
A kind of 2. valve packing sealing structure according to claim 1, it is characterised in that first packing layer and described
Filler spacer ring is provided between second packing layer.
A kind of 3. valve packing sealing structure according to claim 1, it is characterised in that the bottom of first packing layer
If a temperature measuring equipment, the temperature measuring equipment is by the valve body perforate and penetrating in the valve body, for measuring
The bottom temp of first packing layer.
4. a kind of valve packing sealing structure according to claim 1, it is characterised in that the gland includes gland
Set and cover clamp, the valve rod contact through gland set and the cover clamp, the gland set with second packing layer,
The cover clamp compresses second packing layer by gland set.
5. a kind of valve packing sealing structure according to claim 1, it is characterised in that the gland passes through bolt
It is connected with nut with the valve body, is provided with disc spring between the nut and the gland or the valve body, is used for
Gland described in elastic compression.
6. a kind of valve packing sealing structure according to claim 1, it is characterised in that described including the 3rd packing layer
3rd packing layer is located at the top of second packing layer, and the 3rd packing layer fills shape by graphite packing or gum filler
Into the gland is used to compress the 3rd packing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721040185.4U CN207122648U (en) | 2017-08-18 | 2017-08-18 | A kind of valve packing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721040185.4U CN207122648U (en) | 2017-08-18 | 2017-08-18 | A kind of valve packing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207122648U true CN207122648U (en) | 2018-03-20 |
Family
ID=61611034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721040185.4U Active CN207122648U (en) | 2017-08-18 | 2017-08-18 | A kind of valve packing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207122648U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679297A (en) * | 2018-08-01 | 2018-10-19 | 张家港市利佳纺织有限公司 | A kind of packing seal structure of spandex production |
| CN109253270A (en) * | 2018-10-15 | 2019-01-22 | 兰州高压阀门有限公司 | A kind of muff gate valve under special operation condition |
| CN116826627A (en) * | 2022-12-12 | 2023-09-29 | 上海百若试验仪器有限公司 | Ultra-high pressure container wire penetrating piece |
-
2017
- 2017-08-18 CN CN201721040185.4U patent/CN207122648U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679297A (en) * | 2018-08-01 | 2018-10-19 | 张家港市利佳纺织有限公司 | A kind of packing seal structure of spandex production |
| CN109253270A (en) * | 2018-10-15 | 2019-01-22 | 兰州高压阀门有限公司 | A kind of muff gate valve under special operation condition |
| CN116826627A (en) * | 2022-12-12 | 2023-09-29 | 上海百若试验仪器有限公司 | Ultra-high pressure container wire penetrating piece |
| CN116826627B (en) * | 2022-12-12 | 2024-01-09 | 上海百若试验仪器有限公司 | Ultra-high pressure container wire penetrating piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310018 1-2603, No. 501, No. 2 street, Baiyang street, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Zhejiang Kesheng Technology Co., Ltd Address before: 310053 8 and 9 floors of No. 307 Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: Zhejiang zhongkong Solar Energy Technology Co., Ltd |
|
| CP03 | Change of name, title or address |