CN101334116A - Stop valve of bellows instrument - Google Patents
Stop valve of bellows instrument Download PDFInfo
- Publication number
- CN101334116A CN101334116A CNA2008101243452A CN200810124345A CN101334116A CN 101334116 A CN101334116 A CN 101334116A CN A2008101243452 A CNA2008101243452 A CN A2008101243452A CN 200810124345 A CN200810124345 A CN 200810124345A CN 101334116 A CN101334116 A CN 101334116A
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- valve rod
- flange
- valve
- lower valve
- bellows
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Abstract
The invention provides a corrugated pipe meter stop valve which is mainly sealed with the special metal corrugated pipe and widely applied in various meter pipelines. The corrugated pipe meter stop valve is characterized in that the special metal corrugated pipe is covered on a lower valve rod, one end thereof is welded and sealed with a dummy club and a valve core at the lower part of the lower valve rod, the other end of the special metal corrugated pipe is welded and sealed with a flange, a formed valve core component is positioned in the valve body, a plurality of metal washers are respectively arranged at the upper and the lower parts of the flange, and a lower valve cover is matched and tightly sealed with the screw threads of the valve body; a symmetrical and flat structure is adopted in the matching between the lower valve rod and an inner hole of the flange, the lower valve rod is connected with an upper valve rod through a connecting nut with a single steel ball center thrust ball bearing structure, two stuffing cushions are respectively arranged at the upper and the lower ends of a stuffing and positioned between the upper part of the lower valve cover and the upper valve rod to be screwed in, and the torsion of the upper valve cover is adjusted, and the stuffing is tightly pressed to be sealed, thus the second sealing protection is formed; the upper valve rod is driven by a rotating handle to perform the opening and the closing of the valve.
Description
Technical field
The present invention relates to industrial automation control system, the liquid in all kinds of instrument (flow, differential pressure, pressure, the liquid level etc.) pipeline or the keying and the control gear of gas.
Background technique
The structure of the instrument block valve of extensive use is all carried out the external leakage sealing by last filler, because inevitable kinetic friction factor between filler and valve rod and the valve gap, so exist the possibility of leakage on the structure, and some medium (as: poisonous, inflammable, explosive, radioactivity etc. is arranged to safety, environment and healthy working the mischief) does not allow and leaks outside.
The bellows stop valve of the present larger caliber of China is many, but small-bore bellows instrument block valve structure is single, suitable pressure is lower, also have in some essential projects and adopt membrane valve, but can only be applied under the not high working condition of low pressure such as temperature, and working life is short, particularly can not be applied under the temperature and pressure conditions of higher.
Summary of the invention
The object of the present invention is to provide a kind of with the spacious sealing of the peripheral pressurized metal screen of special-purpose metal bellows; last filler secondary seal protection; rotation inhibiting between flange and the valve rod, the thrust ball bearing transmission of single steel ball center, the novel bellows instrument block valve of suitable pressure, temperature and medium wide ranges.
Technological scheme of the present invention is:
1, a kind of special-purpose metal bellows, by one deck to six layer, the seamless steel pipe of every layer of wall thickness 0.1mm to 0.25mm, determine the different number of plies and wall thickness respectively according to the height of valve pressure and temperature, its length, the pitch of waves, wave number and inner and outer diameter are made according to technical parameter designs such as the flow of valve, latus rectum, switching paths; The special-purpose metal bellows is enclosed within on the lower valve rod, the lower boss welded seal of its end and flange, the other end and lower valve rod, spool and valve rod welding, constitute the Bellows valves core assembly, be placed in the valve body, its flange has metal washer up and down respectively, after bottom flange and valve body screw-thread fit are also fastening, below metal washer between valve body and flange, above metal washer between flange and bottom flange, form hard sealing respectively, become the spacious sealing configuration of the peripheral pressurized metal screen of bellows, thereby guaranteed that valve can not produce external leakage; Locknut prevents from valve body and bottom flange locking from becoming flexible.
2, the relevant position of lower valve rod is symmetrical pancake, and cooperates with the symmetrical flat endoporus of flange, lower valve rod can only be moved up and down in flange and can not rotate.
3, lower valve rod is connected with upper valve rod by the attaching nut, the attaching nut is single steel ball center thrust ball bearing structure, the big steel ball that diameter is φ 6～φ 12mm places in the center hole of upper valve rod end, having a bearing support to be installed in the attaching nut bottom the steel ball supports, during throttle down, make that its thrust is concentrated, active force is strong, power distributes balanced more, and the frictional force minimum; When Open valve, the diameter of the uniform some in upper valve rod step top is the small ball of φ 3～φ 4mm, opens valve under the supporting of swivel nut easily.
When 4, the lower valve rod screw top was connected with the attaching nut, its lower valve rod end was by the gap of the single steel ball of bearing support adjustment center thrust ball bearing, after the gap mixes up with the locknut locking and positioning.
5, two Packing seats lay respectively at filler two ends up and down, place between bottom flange top and the upper valve rod, screw in and adjust the torque force of bonnet, compress filler and make its sealing; The locknut locking and positioning, form seal protection for the second time.
Advantage of the present invention and beneficial effect are:
1, the present invention adopts spacious sealing of the peripheral pressurized metal screen of special-purpose metal bellows and metallic gasket hard sealing structure; high temperature high voltage resistant sealability excellence, reliable; high temperature resistant filler secondary seal protection is arranged again; preventing to have realized double-sealing, dual fail-safe aspect the external leakage, be specially adapted to High Temperature High Pressure and aspects such as health, safety, environment had the medium and the occasion of harm.
2, because the relevant position of lower valve rod is symmetrical pancake, and cooperate with the symmetrical flat endoporus of flange, lower valve rod can only be moved up and down in flange and can not rotate, thereby the torque influence power that has been produced when having eliminated the upper valve rod rotation, allow bellows knee springing freely, guaranteed the reliability of quality of product.
2, actuator of the present invention is single steel ball center thrust ball bearing structure, its active force maximization, and minimum friction forces can improve working life greatly, makes the keying operation free and relaxed again.
3, structure adaptability of the present invention is strong, and Applicable scope is extensive, as long as adjust the technical parameter of relevant component, nominal pressure can be from 1MPa～40MPa, and Applicable temperature can be adjustable between-40 ℃～420 ℃; As long as the corresponding material of change just can be applicable to all kinds of different media (all kinds of non-aggressives and the medium that is corrosive).
Description of drawings
Fig. 1 is the vertical section structure figure of bellows instrument block valve.
Fig. 2 is the special-purpose metal bellows component sectional structure chart among Fig. 1.
Fig. 3 is a symmetrical flat cooperating structure sectional drawing between lower valve rod relevant position among Fig. 2 and the flange endoporus.
Fig. 4 is the single steel ball center thrust ball bearing structural drawing among Fig. 1.
Among the figure: 1, the small ball Packing seat 15 of the big steel ball 14 of valve body 2, spool 3, lower valve rod 4, special-purpose metal bellows 5, locknut 6, bottom flange 7, metal washer 8, flange 9, metal washer 10, locknut 11, attaching nut 12, bearing support 13, φ 6～12, φ 3～4, swivel nut 16, filler 17, Packing seat 18, upper valve rod 19, bonnet 20, locknut 21, handle 22, interior hexagonal Cock screw 23, plunger tip
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
In Fig. 1, spool (2) and lower valve rod (3) welding, special-purpose metal bellows (4) is enclosed within on the lower valve rod (3), its end and flange (8), the lower boss welded seal of the other end and lower valve rod (3), constitute Bellows valves core assembly (as shown in Figure 2), be placed in the valve body (1), the both sides up and down of flange (8) have a metal washer (7) and (9) respectively, the screw-thread fit fit sealing of bottom flange (6) and valve body (1), following metal washer (7) is between valve body (1) and flange (8), top metal washer (9) forms hard sealing respectively between flange (8) and bottom flange (6), become the spacious sealing configuration of the peripheral pressurized metal screen of bellows, locknut (5) prevents from valve body (1) and bottom flange (6) locking from becoming flexible; The relevant position of lower valve rod (3) is symmetrical pancake, and cooperate with the corresponding symmetrical flat endoporus of flange (8), lower valve rod (3) can only be moved up and down in flange (8) and can not rotate (as shown in Figure 4), allow bellows elasticity freely, thereby the torque influence power that is produced when having eliminated upper valve rod (18) rotation; Lower valve rod (3) is connected with upper valve rod (18) by attaching nut (11), attaching nut (11) is single steel ball center thrust ball bearing structure (as shown in Figure 3), the big steel ball (13) that diameter is 6～12mm places in the center hole of upper valve rod (18) end, having a bearing support that hardens (12) to be installed in the attaching nut (11) bottom the steel ball supports, thrust is concentrated during throttle down, active force is strong, and the frictional force minimum; When Open valve, it is the small ball (14) of 3～4mm that the step of upper valve rod (18) top is evenly equipped with the diameter of setting quantity, under the supporting of swivel nut (15), opens valve easily; Lower valve rod (3) screw top and attaching nut (11) be when being connected, and the gap of single steel ball center thrust ball bearing (as shown in Figure 3) is adjusted by bearing support (12) in the end of its lower valve rod (3), after adjust in the gap with locknut (10) locking and positioning; Two Packing seats (17) are respectively at filler (16) two ends, place between bottom flange (6) top and the upper valve rod (18), screw in and adjust the torque force of bonnet (19), compress filler (16) and make its sealing, locknut (20) locking and positioning, form seal protection for the second time; Load onto handle (21) at the top of upper valve rod (18), the plunger tip (22) of in handle (21), packing into, hexagonal Cock screw (23) is fixed on handle (21) on the upper valve rod (18) in screwing; Rotatable handle drives upper valve rod and carries out open and close.
Claims (4)
1, a kind of bellows instrument block valve, adopt the worn-out sealing configuration of special-purpose metal bellows metal screen, it is characterized in that: spool (2) and lower valve rod (3) welding, special-purpose metal bellows (4) is enclosed within on the lower valve rod (3), its end and flange (8) welded seal, the other end and lower valve rod boss welded seal, constituting the Bellows valves core assembly places in the valve body (1), the both sides up and down of flange (8) have a metal washer (7) and (9) respectively, bottom flange (6) and valve body screw-thread fit and fit sealing, locknut (5) is locked with bottom flange (6).
2, according to the described Bellows valves core assembly of claim 1, it is characterized in that: cooperating between the relevant position of lower valve rod (3) and flange (8) endoporus is symmetrical pancake structure.
3, according to the described bellows instrument block valve of claim 1, it is characterized in that: attaching nut (11) is single steel ball center thrust ball bearing structure, the big steel ball (13) that diameter is φ 6～φ 12mm places in the center hole of upper valve rod (18) end, having a bearing support that hardens (12) to be installed in the attaching nut (11) bottom the steel ball supports, the diameter that the step top of upper valve rod (18) is evenly equipped with some is the small ball (14) of φ 3～φ 4mm, motion under the supporting of swivel nut (15).
4, according to the described single steel ball of claim 3 center thrust ball bearing structure, it is characterized in that: lower valve rod (3) screw top is connected with attaching nut (11), the gap that bearing support (12) is adjusted steel ball is passed through in the end of its lower valve rod (3), and is locked by locknut (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101243452A CN101334116A (en) | 2008-07-11 | 2008-07-11 | Stop valve of bellows instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101243452A CN101334116A (en) | 2008-07-11 | 2008-07-11 | Stop valve of bellows instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101334116A true CN101334116A (en) | 2008-12-31 |
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ID=40196895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101243452A Pending CN101334116A (en) | 2008-07-11 | 2008-07-11 | Stop valve of bellows instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101334116A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537388A (en) * | 2010-12-02 | 2012-07-04 | 梁敬喜 | Pulling-down sluice valve |
| CN103244691A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows stop valve with switch display positions |
| CN103244696A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | External-pressure type bellows globe valve with non-rotating valve rod |
| CN103912695A (en) * | 2013-11-25 | 2014-07-09 | 江苏星河阀门有限公司 | Corrugated pipe instrument five valve group |
| CN104089035A (en) * | 2014-07-21 | 2014-10-08 | 江苏星河阀门有限公司 | Valve rod irrotational structure of corrugated pipe check valve |
| CN104930198A (en) * | 2015-05-28 | 2015-09-23 | 施伟 | High-vacuum switch valve |
| CN105003655A (en) * | 2015-05-15 | 2015-10-28 | 扬中市阀门厂有限公司 | High-pressure connecting rod type bellows globe valve |
| CN105257829A (en) * | 2015-10-15 | 2016-01-20 | 上海市计量测试技术研究院 | Ultrahigh-pressure stop valve |
| CN110848444A (en) * | 2019-12-13 | 2020-02-28 | 鞍山电磁阀有限责任公司 | Valve core assembly and safety valve |
| CN112576768A (en) * | 2020-12-21 | 2021-03-30 | 纽威石油设备（苏州）有限公司 | Adjustable pressure release valve |
| CN112833194A (en) * | 2019-11-25 | 2021-05-25 | 中国石油天然气股份有限公司 | Needle valve |
| CN113523636A (en) * | 2021-08-09 | 2021-10-22 | 江苏神通阀门股份有限公司 | Valve welding method |
| WO2022199057A1 (en) * | 2021-03-23 | 2022-09-29 | Engineered Controls International, Llc | Cryogenic fluid shut-off valve |
-
2008
- 2008-07-11 CN CNA2008101243452A patent/CN101334116A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537388A (en) * | 2010-12-02 | 2012-07-04 | 梁敬喜 | Pulling-down sluice valve |
| CN103244691B (en) * | 2013-05-17 | 2016-02-17 | 江苏星河阀门有限公司 | The internal pressure type bellows stop valve that belt switch position is aobvious |
| CN103244691A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows stop valve with switch display positions |
| CN103244696A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | External-pressure type bellows globe valve with non-rotating valve rod |
| CN103912695B (en) * | 2013-11-25 | 2017-02-15 | 江苏星河阀门有限公司 | Corrugated pipe instrument five valve group |
| CN103912695A (en) * | 2013-11-25 | 2014-07-09 | 江苏星河阀门有限公司 | Corrugated pipe instrument five valve group |
| CN104089035A (en) * | 2014-07-21 | 2014-10-08 | 江苏星河阀门有限公司 | Valve rod irrotational structure of corrugated pipe check valve |
| CN105003655A (en) * | 2015-05-15 | 2015-10-28 | 扬中市阀门厂有限公司 | High-pressure connecting rod type bellows globe valve |
| CN104930198A (en) * | 2015-05-28 | 2015-09-23 | 施伟 | High-vacuum switch valve |
| CN105257829A (en) * | 2015-10-15 | 2016-01-20 | 上海市计量测试技术研究院 | Ultrahigh-pressure stop valve |
| CN112833194A (en) * | 2019-11-25 | 2021-05-25 | 中国石油天然气股份有限公司 | Needle valve |
| CN110848444A (en) * | 2019-12-13 | 2020-02-28 | 鞍山电磁阀有限责任公司 | Valve core assembly and safety valve |
| CN112576768A (en) * | 2020-12-21 | 2021-03-30 | 纽威石油设备（苏州）有限公司 | Adjustable pressure release valve |
| WO2022199057A1 (en) * | 2021-03-23 | 2022-09-29 | Engineered Controls International, Llc | Cryogenic fluid shut-off valve |
| CN113523636A (en) * | 2021-08-09 | 2021-10-22 | 江苏神通阀门股份有限公司 | Valve welding method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |