CN204879013U - Low temperature pneumatic ball valve packing structure - Google Patents
Low temperature pneumatic ball valve packing structure Download PDFInfo
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- CN204879013U CN204879013U CN201520522123.1U CN201520522123U CN204879013U CN 204879013 U CN204879013 U CN 204879013U CN 201520522123 U CN201520522123 U CN 201520522123U CN 204879013 U CN204879013 U CN 204879013U
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- clearance space
- low temperature
- arrangement
- pneumatic ball
- ball valve
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Abstract
The application discloses low temperature pneumatic ball valve packing structure, including valve rod and valve gap, the valve gap has the confession the cavity that the valve rod was worn to establish, the valve rod with be formed with clearance space between the lateral wall of cavity, the clearance space inside seal has the V -arrangement to pack and O shape spring energy storage sealing washer, O shape spring energy storage sealing washer is located the below that the V -arrangement packed, the top that the V -arrangement packed is fixed with to pack presses the cover. This shared space of novel structure is little and the deformation compensation ability is strong, and sealing performance is better, and disc spring can effectively play the locking effect of V -arrangement filler, and the elasticity compensation is taken to O shape spring energy storage sealing washer self, and this designs 2 kinds of sealed combinations of elasticity compensation in other words, can guarantee the valve rod sealing performance of valve under frequent the action.
Description
Technical field
The application relates to a kind of low temperature pneumatic ball valve, particularly relates to a kind of low temperature pneumatic ball valve packing seal structure, can be applied in the charging line of LNG filling machine, mainly plays the effect cut off and connect pipeline.
Background technique
Described in ginseng Fig. 1, traditional low temperature pneumatic ball valve filler mostly is the subsidiary O shape rubber seal 12 of V-arrangement filler 11 and counterbalance spring 13, does like this and requires that the part of combination is more, shared physical dimension is larger, cost is higher, and Material shrinkage at low temperatures, not easily ensure sealing.
In view of this, be necessary to provide a kind of novel low temperature pneumatic ball valve.
Model utility content
The purpose of this utility model is to provide a kind of low temperature pneumatic ball valve packing seal structure, to overcome deficiency of the prior art.
For achieving the above object, the utility model provides following technological scheme:
The embodiment of the present application discloses a kind of low temperature pneumatic ball valve packing seal structure, comprise valve rod and valve gap, described valve gap has the cavity worn for described valve rod, clearance space is formed between the sidewall of described valve rod and described cavity, V-arrangement filler and O shape spring energy-storage seal ring is sealed with in described clearance space, described O shape spring energy-storage seal ring is positioned at the below of described V-arrangement filler, and the top of described V-arrangement filler is fixed with filler pressing sleeve.
Preferably, in above-mentioned low temperature pneumatic ball valve packing seal structure, described clearance space comprises first clearance space with the first external diameter and second clearance space with the second external diameter, described first external diameter is greater than described second external diameter, described V-arrangement filler is positioned at described first clearance space, and described O shape spring energy-storage seal ring is positioned at described second clearance space.
Preferably, in above-mentioned low temperature pneumatic ball valve packing seal structure, be interval with Packing seat between described V-arrangement filler and O shape spring energy-storage seal ring, described Packing seat is positioned at the bottom of described first clearance space.
Preferably, in above-mentioned low temperature pneumatic ball valve packing seal structure, the top of described filler pressing sleeve is provided with gland nut, is provided with belleville spring between described gland nut and described filler pressing sleeve.
Preferably, in above-mentioned low temperature pneumatic ball valve packing seal structure, the top of described gland nut is provided with anti-rotation pressure cap.
Compared with prior art, the utility model has the advantage of: this new structure little and deformation-compensated ability that takes up space is strong, sealability is better, belleville spring effectively can play the locking effect of V-arrangement filler, O shape spring energy-storage seal ring its own band elastic compensating, this design is equivalent to the combination of 2 kinds of elastic compensating sealings, can ensure the valve stem seal performance of valve under frequent movement.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the sealed structural representation of Conventional cryogenic pneumatic ball valve;
Figure 2 shows that low temperature pneumatic ball valve packing seal structure schematic diagram in the utility model specific embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be described in detail the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of the utility model protection.
Shown in ginseng Fig. 2, low temperature pneumatic ball valve packing seal structure, comprise valve rod 21 and valve gap 22, valve gap 22 has the cavity worn for valve rod, clearance space is formed between valve rod 21 and the sidewall of cavity, be sealed with the below that V-arrangement filler 23 and O shape spring energy-storage seal ring 24, O shape spring energy-storage seal ring 24 are positioned at V-arrangement filler 23 in clearance space, the top of V-arrangement filler 23 is fixed with filler pressing sleeve 25.
Clearance space comprises first clearance space with the first external diameter and second clearance space with the second external diameter, and the first external diameter is greater than the second external diameter, and V-arrangement filler 23 is positioned at the first clearance space, and O shape spring energy-storage seal ring 24 is positioned at the second clearance space.Be interval with Packing seat 26 between V-arrangement filler and O shape spring energy-storage seal ring, Packing seat 26 is positioned at the bottom of the first clearance space.
The top of filler pressing sleeve 25 is provided with gland nut 27, is provided with belleville spring 28 between gland nut 27 and filler pressing sleeve 25.The top of gland nut 27 is provided with anti-rotation pressure cap 29.
The V-arrangement filler that is designed to of this stem packing combines with O shape spring energy-storage seal ring and coordinates belleville spring, gland nut, anti-rotation gland, institute's little and deformation-compensated ability that takes up space is strong, sealability is better, belleville spring effectively can play the locking effect of V-arrangement filler, O shape spring energy-storage seal ring its own band elastic compensating, this design is equivalent to the combination of 2 kinds of elastic compensating sealings, can ensure the valve stem seal performance of valve under frequent movement.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (5)
1. a low temperature pneumatic ball valve packing seal structure, comprise valve rod and valve gap, described valve gap has the cavity worn for described valve rod, it is characterized in that: between the sidewall of described valve rod and described cavity, be formed with clearance space, V-arrangement filler and O shape spring energy-storage seal ring is sealed with in described clearance space, described O shape spring energy-storage seal ring is positioned at the below of described V-arrangement filler, and the top of described V-arrangement filler is fixed with filler pressing sleeve.
2. low temperature pneumatic ball valve packing seal structure according to claim 1, it is characterized in that: described clearance space comprises first clearance space with the first external diameter and second clearance space with the second external diameter, described first external diameter is greater than described second external diameter, described V-arrangement filler is positioned at described first clearance space, and described O shape spring energy-storage seal ring is positioned at described second clearance space.
3. low temperature pneumatic ball valve packing seal structure according to claim 2, is characterized in that: be interval with Packing seat between described V-arrangement filler and O shape spring energy-storage seal ring, described Packing seat is positioned at the bottom of described first clearance space.
4. low temperature pneumatic ball valve packing seal structure according to claim 1, is characterized in that: the top of described filler pressing sleeve is provided with gland nut, is provided with belleville spring between described gland nut and described filler pressing sleeve.
5. low temperature pneumatic ball valve packing seal structure according to claim 4, is characterized in that: the top of described gland nut is provided with anti-rotation pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522123.1U CN204879013U (en) | 2015-07-17 | 2015-07-17 | Low temperature pneumatic ball valve packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522123.1U CN204879013U (en) | 2015-07-17 | 2015-07-17 | Low temperature pneumatic ball valve packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204879013U true CN204879013U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520522123.1U Expired - Fee Related CN204879013U (en) | 2015-07-17 | 2015-07-17 | Low temperature pneumatic ball valve packing structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204879013U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006314A (en) * | 2017-12-01 | 2018-05-08 | 中国寰球工程有限公司 | Cryogenic ball valve fugacity combined stuffing structure |
| CN109538779A (en) * | 2019-01-17 | 2019-03-29 | 广州宝力特密封技术有限公司 | Ball valve combined seal ring and ball valve |
| CN109827005A (en) * | 2019-03-29 | 2019-05-31 | 湖北泰和石化设备有限公司 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
| CN110148920A (en) * | 2019-03-29 | 2019-08-20 | 武汉船用机械有限责任公司 | Cable sealing device |
| CN112197059A (en) * | 2020-11-06 | 2021-01-08 | 西南化工研究设计院有限公司 | Multiple composite seal prevents valve rod leakage formula valve rod filler structure |
-
2015
- 2015-07-17 CN CN201520522123.1U patent/CN204879013U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006314A (en) * | 2017-12-01 | 2018-05-08 | 中国寰球工程有限公司 | Cryogenic ball valve fugacity combined stuffing structure |
| CN109538779A (en) * | 2019-01-17 | 2019-03-29 | 广州宝力特密封技术有限公司 | Ball valve combined seal ring and ball valve |
| CN109827005A (en) * | 2019-03-29 | 2019-05-31 | 湖北泰和石化设备有限公司 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
| CN110148920A (en) * | 2019-03-29 | 2019-08-20 | 武汉船用机械有限责任公司 | Cable sealing device |
| CN112197059A (en) * | 2020-11-06 | 2021-01-08 | 西南化工研究设计院有限公司 | Multiple composite seal prevents valve rod leakage formula valve rod filler structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200717 |