CN207064702U - A kind of Subzero valve - Google Patents
A kind of Subzero valve Download PDFInfo
- Publication number
- CN207064702U CN207064702U CN201721021965.4U CN201721021965U CN207064702U CN 207064702 U CN207064702 U CN 207064702U CN 201721021965 U CN201721021965 U CN 201721021965U CN 207064702 U CN207064702 U CN 207064702U
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- Prior art keywords
- valve
- bonnet
- airtight
- gland
- watertight padding
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Abstract
It the utility model is related to a kind of Subzero valve, including valve body, bonnet, valve seat, spheroid, valve rod, handwheel, valve rod is connected with spheroid, there is gap in valve rod, form neck cavity with valve cover chamber, and handwheel is arranged on valve stem tip, also include filler seat, airtight and watertight padding component and gland, filler seat is arranged on bonnet top and is set in outside valve rod, and airtight and watertight padding component and gland are arranged in filler seat, and gland is located above airtight and watertight padding component and is connected with airtight and watertight padding component；Pressing device is provided with above gland；Bonnet lower is communicated with the relief hole of neck cavity and valve lumen.A kind of Subzero valve provided by the utility model, the cavity for lengthening bonnet are not in superpressure phenomenon, and can ensure that seal will not loosen and leak in low-temperature shrink, safe and reliable.
Description
Technical field
It the utility model is related to valve field, more particularly to a kind of Subzero valve.
Background technology
Ball valve uses spheroid as opening and closing element, because it has small flow resistance, simple in construction, sealed reliable, swift to operate etc. more
Aspect advantage and trusted more and more by client.In the prior art, the structure of ball valve generally includes, and valve body, is arranged on
Valve seat in valve body, the spheroid being connected with valve base sealing, bonnet, spheroid is provided with to be led to what the fluid passage in valve body coordinated
Hole, valve rod is connected with spheroid, valve rod is typically provided packing seal with valve cover chamber, and turning for spheroid is controlled by the rotation of valve rod
It is dynamic, realize the keying of valve.When for cryogen, valve rod and bonnet are lengthened out.
With the continuous development of valve gate technology, client increasingly payes attention to the consciousness of security protection.And in cryogenic ball valve,
Due to lengthening the presence of bonnet, a cavity space is formed between bonnet and valve rod, because temperature change may cause the cavity space
Inside there is superpressure phenomenon, and then cause bonnet to deform, or even produce dielectric leakage.Moreover, cryogenic ball valve is in low temperature long-time work
In the case of work, airtight and watertight padding temperature can decline, and cause encapsulant low-temperature shrink, leakage occur therefore, existing cryogenic ball valve
Potential safety hazard be present.
Therefore, how existing cryogenic ball valve is improved, make its overcome drawbacks described above be those skilled in the art urgently
A problem to be solved.
Utility model content
In view of the above-mentioned state of the art, technical problem to be solved in the utility model is to provide a kind of low temperature valve
Door, the cavity for lengthening bonnet is not in superpressure phenomenon, and can ensure that seal will not loosen and leak in low-temperature shrink,
It is safe and reliable.
Technical scheme is used by the utility model solves above-mentioned technical problem：
A kind of Subzero valve, including valve body, bonnet, valve seat, spheroid, valve rod, handwheel, the valve rod connect with the spheroid
Connect, the valve rod has gap with the valve cover chamber, forms neck cavity, and the handwheel is arranged on the valve stem tip, also wrapped
Filler seat, airtight and watertight padding component and gland are included, the filler seat is arranged on the bonnet top and is set in outside the valve rod, institute
State airtight and watertight padding component and the gland be arranged in the filler seat, the gland be located above the airtight and watertight padding component and
It is connected with the airtight and watertight padding component；Pressing device is provided with above the gland；The bonnet lower is communicated with the neck
The relief hole of portion's cavity and valve lumen.
The pressing device includes the clamp nut and spring being connected with each other, and the clamp nut is set in the valve rod
Outside, the spring are arranged between the clamp nut and the gland.
Beneficial effect：
Using technical scheme provided by the utility model, compared with prior art, have the advantages that：
A kind of Subzero valve of the present utility model, when airtight and watertight padding component low temperature shrinks loosening, spring is to sealing
Filler assembly has thrust, keeps airtight and watertight padding component to be in working condition, prevents from leaking during low temperature；In the bottom of bonnet
There is provided relief hole, neck cavity is connected with valve lumen, when the medium expanded by heating in neck cavity, is arranged through relief hole
Valve lumen is delivered to, superpressure phenomenon occurs so as to avoid the cavity of bonnet, is particularly suitable for using the low of lengthening valve cover structure
Warm valve uses.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is close-up schematic view at A in Fig. 1.
Fig. 3 is close-up schematic view at B in Fig. 1.
Wherein, valve body 1, bonnet 2, valve seat 3, spheroid 4, valve rod 5, handwheel 6, neck cavity 7, filler seat 8, airtight and watertight padding group
Part 9, gland 10, valve lumen 11, relief hole 12, clamp nut 13, spring 14.
Embodiment
The effect of to make to architectural feature of the present utility model and being reached have it is further understand and understanding, to compared with
Good embodiment and accompanying drawing coordinate detailed description, are described as follows：
As shown in Figure 1 to Figure 3, a kind of Subzero valve, including valve body 1, bonnet 2, valve seat 3, spheroid 4, valve rod 5, handwheel 6,
Valve rod 5 is connected with spheroid 4, gap between valve rod 5 and bonnet 2 be present, forms neck cavity 7, and handwheel 6 is arranged on the top of valve rod 5, is made
For improvement of the present utility model, in addition to filler seat 8, airtight and watertight padding component 9 and gland 10, filler seat 8 is arranged on the top of bonnet 2
And be set in outside valve rod 5, airtight and watertight padding component 9 and gland 10 are arranged in filler seat 8, and gland 10 is located at airtight and watertight padding component 9
Top and it is connected with airtight and watertight padding component 9；The top of gland 10 is provided with pressing device；The bottom of bonnet 2 is communicated with neck cavity 7
With the relief hole 12 of valve lumen 11.
Further improved as the utility model, pressing device includes the clamp nut 13 and spring being connected with each other
14, clamp nut 13 is set in the outside of valve rod 5, and spring 14 is arranged between clamp nut 13 and gland 10.
A kind of Subzero valve of the present utility model, when the low temperature of airtight and watertight padding component 9 shrinks loosening, spring 14 is to close
Envelope filler assembly 9 has thrust, keeps airtight and watertight padding component 9 to be in working condition, prevents from leaking during low temperature；In bonnet 2
Bottom be provided with relief hole 12, neck cavity 7 is connected with valve lumen 11, when the medium expanded by heating in neck cavity 7
When, through the dispatch of relief hole 12 to valve lumen 11, there is superpressure phenomenon so as to avoid the cavity of bonnet 2, be particularly suitable for adopting
Used with the Subzero valve for lengthening valve cover structure.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that its according to
The technical scheme described in previous embodiment can so be modified, or which part technical characteristic is replaced on an equal basis
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technical scheme
Spirit and scope.
Claims (2)
1. a kind of Subzero valve, including valve body (1), bonnet (2), valve seat (3), spheroid (4), valve rod (5), handwheel (6), the valve
Bar (5) is connected with the spheroid (4), gap between the valve rod (5) and the bonnet (2) be present, forms neck cavity (7), institute
State handwheel (6) and be arranged on the valve rod (5) top, it is characterised in that also including filler seat (8), airtight and watertight padding component (9) and pressure
Cover (10), the filler seat (8) is arranged on the bonnet (2) top and is set in the valve rod (5) outside, the airtight and watertight padding group
Part (9) and the gland (10) are arranged in the filler seat (8), and the gland (10) is located at the airtight and watertight padding component (9)
Top and it is connected with the airtight and watertight padding component (9)；Pressing device is provided with above the gland (10)；Under the bonnet (2)
Portion is communicated with the relief hole (12) of the neck cavity (7) and valve lumen (11).
2. a kind of Subzero valve according to claim 1, it is characterised in that the pressing device includes the pressure being connected with each other
Tight nut (13) and spring (14), the clamp nut (13) are set in the outside of the valve rod (5), and the spring (14) is set
Between the clamp nut (13) and the gland (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721021965.4U CN207064702U (en) | 2017-08-15 | 2017-08-15 | A kind of Subzero valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721021965.4U CN207064702U (en) | 2017-08-15 | 2017-08-15 | A kind of Subzero valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207064702U true CN207064702U (en) | 2018-03-02 |
Family
ID=61515897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721021965.4U Active CN207064702U (en) | 2017-08-15 | 2017-08-15 | A kind of Subzero valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207064702U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999973A (en) * | 2018-10-11 | 2018-12-14 | 浙江大工阀门驱动有限公司 | A kind of sealing device of threaded connection |
| CN110185813A (en) * | 2019-06-21 | 2019-08-30 | 安徽南氟化工设备有限公司 | A kind of flanged joint Fluorine-lined V type ball valve |
| CN112283384A (en) * | 2020-10-28 | 2021-01-29 | 凯喜姆阀门有限公司 | Valve rod blowout prevention ball outlet valve |
-
2017
- 2017-08-15 CN CN201721021965.4U patent/CN207064702U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999973A (en) * | 2018-10-11 | 2018-12-14 | 浙江大工阀门驱动有限公司 | A kind of sealing device of threaded connection |
| CN110185813A (en) * | 2019-06-21 | 2019-08-30 | 安徽南氟化工设备有限公司 | A kind of flanged joint Fluorine-lined V type ball valve |
| CN112283384A (en) * | 2020-10-28 | 2021-01-29 | 凯喜姆阀门有限公司 | Valve rod blowout prevention ball outlet valve |
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| GR01 | Patent grant |