CN207180947U - A kind of valve rod primary seal detects structure - Google Patents
A kind of valve rod primary seal detects structure Download PDFInfo
- Publication number
- CN207180947U CN207180947U CN201720913166.1U CN201720913166U CN207180947U CN 207180947 U CN207180947 U CN 207180947U CN 201720913166 U CN201720913166 U CN 201720913166U CN 207180947 U CN207180947 U CN 207180947U
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- CN
- China
- Prior art keywords
- valve rod
- transition sleeve
- primary seal
- valve stem
- mounting seat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of valve rod primary seal to detect structure,The bonnet has mounting seat,There is mounting hole in the mounting seat,Valve stem seal cylinder is equipped with the mounting hole,There is mounting flange at the top of the valve stem seal cylinder,The mounting flange at the top of mounting seat with being connected,Valve rod is equipped with the valve stem seal cylinder,The upper and lower end face of the valve stem seal cylinder at valve stem contacts with having valve rod primary seal circle,Transition sleeve is set with outside the mounting seat,The valve rod is passed through at the top of transition sleeve,There is wear ring between valve rod at the top of the transition sleeve,Have between at the top of the transition sleeve bottom and mounting seat and keep away interdigit gap,Described keep away has escape orifice in transition sleeve side wall corresponding to a gap location,By opening up escape orifice on transition sleeve,It can be flowed out in order to the liquid of the inside,Ice blockage is not had and corrodes the risk of actuator,And it can be detected in real time online,Securely and reliably and do not influence normally to produce.
Description
Technical field
Fluid technique field is the utility model is related to, structure is detected more particularly to a kind of valve rod primary seal.
Background technology
Pneumatic safety valve（Direct Travel）After long-term use because valve rod primary seal is worn, and caused by leakage, this leakage is difficult
With on-line checking, thus constantly lasting leakage, the pipeline medium of leakage（Natural gas）Have following harm：1) moisture is contained in,
Condense into water, cold season freezes, freeze so that the gap between valve rod and transition sleeve is blocked, valve opening or closing
Failure situation be present;2) natural gas of leakage up scurries into actuator, day along the gap between valve rod and transition sleeve
The acid mediums such as the hydrogen sulfide that contains in right gas, carbon dioxide, long-term corrosion actuator, destroy actuator parts, failure,
It is existing solution technical scheme be：Actuator and other connectors are periodically removed, remove filter sheath, it is close to valve rod master with leak hunting method
Envelope detected, if necessary force periodic replacement, due to need shut down dismounting could be detected, detect after also need to pacify again
Adjustment tries；Off-time is long, and cost is huge；Detection does not find to leak in time, and the equipment of input, manpower, goods and materials are also one
The huge waste of kind, but compared with the harm that leakage occurs, often have to periodically carry out, there is certain blindness.
The content of the invention
The purpose of this utility model is to overcome the above-mentioned problems in the prior art, proposes a kind of valve rod primary seal inspection
Geodesic structure, by opening up escape orifice in filter sheath, it can be flowed out in order to the liquid of the inside, not have ice blockage and corrosion is held
The risk of row device, and can be detected in real time online, securely and reliably and do not influence normally to produce.
The purpose of this utility model is realized by following technical proposals：
A kind of valve rod primary seal detects structure, including：Bonnet, the bonnet have mounting seat, had in the mounting seat
Mounting hole, valve stem seal cylinder is equipped with the mounting hole, there is mounting flange, the installation at the top of the valve stem seal cylinder
Ring flange is equipped with valve rod, the upper and lower end face of the valve stem seal cylinder with being connected at the top of mounting seat in the valve stem seal cylinder
With having valve rod primary seal circle at valve stem contacts, transition sleeve is set with outside the mounting seat, the valve rod is passed through at the top of transition sleeve,
There is wear ring between the transition sleeve top and valve rod, have between the transition sleeve bottom and mounting seat top and keep away interdigit gap,
Described keep away has escape orifice in transition sleeve side wall corresponding to a gap location, connected so that keeping away interdigit gap with free surrounding space.
A kind of valve rod primary seal detection structure of the present utility model, bottom and the valve stem seal cylinder top surface of the escape orifice
Alignment.
A kind of valve rod primary seal detection structure of the present utility model, the escape orifice are inclined to set.
A kind of valve rod primary seal detection structure of the present utility model, the escape orifice is close to the closer transition of valve stem seal cylinder
The outer side of set is higher.
A kind of valve rod primary seal of the present utility model detects structure, and U-shaped water receiving pipe is connected with the escape orifice.
A kind of valve rod primary seal detection structure of the present utility model, the end of the U-shaped water receiving pipe are connected with gas detection
Probe.
According to above-mentioned technical proposal, the beneficial effects of the utility model are：A kind of valve rod primary seal detection structure is proposed, is led to
Cross and escape orifice opened up on transition sleeve, and be inclined to set, can in order to the inside liquid flow out, do not have ice blockage and
Corrode the risk of actuator, setting U-tube can be beneficial to liquid and flow out, and the liquid that can be used again does not influence online carry out in fact
When detect, it is safe and reliable and do not influence normally to produce.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of valve rod primary seal detection structure of the utility model.
Embodiment
The utility model is further described with reference to specific embodiments and the drawings.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model
If Fig. 1 is the embodiment that a kind of valve rod primary seal of the utility model detects structure, a kind of valve rod primary seal detection knot
Structure, including：Bonnet 4, the bonnet 4 have mounting seat, have mounting hole in the mounting seat, valve is equipped with the mounting hole
Bar sealing drum 5, the top of valve stem seal cylinder 5 have mounting flange, and the mounting flange is connected with mounting seat top,
Valve rod 1 is equipped with the valve stem seal cylinder 5, the upper and lower end face of the valve stem seal cylinder 5 at valve stem contacts with having valve rod master
Sealing ring 4, the mounting seat are set with transition sleeve 3 outside, and the valve rod passes through the top of filter sheath 3, the top of filter sheath 3 and valve
There is wear ring 2 between bar 1, have between the bottom of transition sleeve 3 and mounting seat top and keep away interdigit gap, it is described to keep away a gap location pair
There is escape orifice 7 in the side wall of filter sheath 3 answered, connected so that keeping away interdigit gap with free surrounding space, the bottom of the escape orifice 7
Alignd with the top surface of valve stem seal cylinder 5, the escape orifice 7 is inclined to set, and the escape orifice 7 is closer close to valve stem seal cylinder 5
3 outer side of transition sleeve is higher, and U-shaped water receiving pipe is connected with the escape orifice 7, and the end of the U-shaped water receiving pipe is connected with gas
Detection probe.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of valve rod primary seal detects structure, it is characterised in that including：Bonnet, the bonnet have mounting seat, the installation
There is mounting hole in seat, valve stem seal cylinder is equipped with the mounting hole, there is mounting flange at the top of the valve stem seal cylinder,
The mounting flange is connected with mounting seat top, and valve rod is equipped with the valve stem seal cylinder, the valve stem seal cylinder
Upper and lower end face is set with transition sleeve, the valve rod passed through with having valve rod primary seal circle at valve stem contacts outside the mounting seat
Set top is crossed, there is wear ring between the transition sleeve top and valve rod, have between the transition sleeve bottom and mounting seat top
Interdigit gap is kept away, described keep away has escape orifice in transition sleeve side wall corresponding to a gap location, so that keeping away interdigit gap and free surrounding space
Connection.
A kind of 2. valve rod primary seal detection structure according to claim 1, it is characterised in that：The bottom of the escape orifice
Alignd with valve stem seal cylinder top surface.
A kind of 3. valve rod primary seal detection structure according to claim 2, it is characterised in that：The escape orifice is inclined to be set
Put.
A kind of 4. valve rod primary seal detection structure according to claim 3, it is characterised in that：The escape orifice is close to valve rod
The outer side of the closer transition sleeve of sealing drum is higher.
A kind of 5. valve rod primary seal detection structure according to claim 4, it is characterised in that：It is connected with the escape orifice
U-shaped water receiving pipe.
A kind of 6. valve rod primary seal detection structure according to claim 5, it is characterised in that：The end of the U-shaped water receiving pipe
End is connected with gas detection probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720913166.1U CN207180947U (en) | 2017-07-26 | 2017-07-26 | A kind of valve rod primary seal detects structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720913166.1U CN207180947U (en) | 2017-07-26 | 2017-07-26 | A kind of valve rod primary seal detects structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207180947U true CN207180947U (en) | 2018-04-03 |
Family
ID=61737673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720913166.1U Active CN207180947U (en) | 2017-07-26 | 2017-07-26 | A kind of valve rod primary seal detects structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207180947U (en) |
-
2017
- 2017-07-26 CN CN201720913166.1U patent/CN207180947U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 610207 Chengdu China (Sichuan) Free Trade Pilot Zone, Chengdu Shuangliu District, Sichuan Province Patentee after: Chengdu Zhonghuan Flow Control Equipment Co., Ltd. Address before: 610207, No. two, section two, airport road 1488, Southwest Airlines Development Zone, Chengdu, Sichuan, Shuangliu County Patentee before: Chengdu Zhonghuan Flow Control Equipment Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |