CN105443782A - Corrugated tube stop valve - Google Patents
Corrugated tube stop valve Download PDFInfo
- Publication number
- CN105443782A CN105443782A CN201510992151.4A CN201510992151A CN105443782A CN 105443782 A CN105443782 A CN 105443782A CN 201510992151 A CN201510992151 A CN 201510992151A CN 105443782 A CN105443782 A CN 105443782A
- Authority
- CN
- China
- Prior art keywords
- bellows
- valve
- spool
- stuffing
- stop valve
- Prior art date
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Abstract
The invention discloses a corrugated tube stop valve which comprises a handle wheel, a valve rod, a stuffing assembly, a corrugated tube assembly, a valve cover, a valve body and a valve element which are arranged from top to bottom, wherein the stuffing assembly comprises a stuffing box, a stuffing ring, stuffing and a stuffing pressure cover; the stuffing is filled in the stuffing box; by virtue of the stuffing pressure cover, the stuffing is in tight contact with the valve rod, so that sealing between the stuffing and the valve rod is realized; a ring-shaped slot is formed in the stuffing ring, and is communicated with a Z-shaped runner arranged in the stuffing box, so that when a corrugated tube is cracked, a fluid medium in the stop valve flows to a pressure transmitter arranged at an outlet of the Z-shaped rubber through the ring-shaped slot and the Z-shaped runner, and therefore, leakage alarm is realized. Meanwhile, the invention designs a novel special ceramic valve element connecting structure; and hardness of high-toughness ceramic is greatly improved relative to hardness of a conventional overlaying hard alloy valve element, so that the service life of the valve element is greatly prolonged.
Description
Technical field
The invention belongs to valve technology field, be mainly used in the hazardous fluids of chemical industry, smelting industry, such as, gas containing hypertoxic, inflammable, explosive, severe corrosive, liquid or gas-liquid-solid fluid-mixing, be mainly used in cut-out and the adjustment of fluid circuit.
Background technique
Chemical industry bellows stop valve requires very harsh, be badly in need of the bellows stop valve with regulatory function, zero leakage sealing is realized again when turning off, therefore require very high to seal spool part, existing common bellows stop valve mainly realizes cutoff function, does not substantially possess in adjustment, if forced adjustment, under this operating mode, medium is very serious to the erosion of valve core sealed cover, and operating life is very short; In addition, bellows stop valve is usually used in high-risk medium, require that the bellows life-span is long, and conventional bellows stop valve can not be reported to the police when breaking, potential safety hazard is large, what adopt due to conventional spool again is pile-up welding hard alloy structure, hardness, at about HRC40, is difficult to long-term work and is washing away occasion by force, be easy to be destroyed, and conventional valve core structure is unsuitable for carrying out pressure adjustment under small guide vane, when valve wide open, valve body and spool gap are very large, make air-flow wash away bellows in a large number, cause bellows to wash away seriously by medium, shorten the operating life of bellows.In view of this, a kind of with bellows bursts warning function and regulatory function and the bellows stop valve of long working life in the urgent need to developing in chemical industry at present.
Summary of the invention
The object of the invention is to overcome existing common bellows stop valve do not have bellows bursts warning function, potential safety hazard large and when valve wide open spool wash away the defect such as seriously by medium, provide a kind of property rational in infrastructure, easy to use, safe good and the stop valve with corrugated pipe of long working life.
Concrete technological scheme of the present invention is as follows:
A kind of bellows stop valve, comprise the handwheel arranged from top to bottom, valve rod, filler assembly, bellows component, valve gap, valve body and spool, valve body is provided with the entrance be connected, vertical holes and outlet, under the turning effort of handwheel, valve rod band movable valve plug moves up and down in vertical holes, realize conducting or the closedown of entrance and exit, described filler assembly comprises stuffing box, packing ring, filler and Gland, filler is contained in stuffing box, and make filler and valve rod close contact by Gland, realize the sealing between filler and valve rod, circular groove is provided with in described packing ring, and be connected with the Z-shaped runner arranged in stuffing box, when bellows component is broken, flowing medium in stop valve flows out to the pressure transmitter of Z-shaped runner exit place setting by circular groove and Z-shaped runner, realize revealing and report to the police.
In above-mentioned bellows stop valve, spool adopts pottery to make.
In above-mentioned bellows stop valve, through hole is provided with in the middle part of spool, spool conversion adapter is provided with between spool and valve rod, one end of spool conversion adapter connects with the lower end of valve rod, the other end through the through hole in the middle part of spool, and pads connection and the sealing of existing spool and spool conversion adapter by locking nut and Expanded graphite.
In above-mentioned bellows stop valve, bellows component comprises connection pad under upper bellows, bellows connection pad, lower bellows and the bellows set gradually from top to bottom, described bellows connection pad is welded between bellows and lower bellows, under described bellows, connection pad is welded on the bottom of lower bellows, and the stuffing box of described bellows component and bellows component upper end defines the sealing to valve rod.
In above-mentioned bellows stop valve, the top of valve rod is provided with anti-rotation assembly, described anti-rotation assembly comprises Anti-rotary block and column, valve rod and Anti-rotary block pass through together with screw fastening, Anti-rotary block is provided with U-shaped draw-in groove, described U-shaped draw-in groove is stuck on column, carries out spacing to the rotation of valve rod.
In above-mentioned bellows stop valve, the half-angle of seal spool cone angle is 30 degree.
In above-mentioned bellows stop valve, the gap between the matching hole that spool and valve body are arranged, than flowing through the large 0.1mm of stop valve maximum media particle diameter.
In above-mentioned bellows stop valve, gap during stop valve standard-sized sheet between spool upper-end surface and valve gap is 0.1-0.25mm.
In above-mentioned bellows stop valve, valve body and valve gap, by Bolt Connection, are provided with sealing gasket and spirotallic gasket in the Seal cage that point of attachment is formed, realize the sealing between valve body and valve gap.
Compared with prior art, its beneficial effect of technological scheme of the present invention is as follows:
One, the designed leakage detecting device to bellows, enters warning in time to bellows bursts, can guarantee safety when rushing to repair simultaneously, eliminates the potential safety hazard brought due to bellows bursts.
Two, devise a kind of new special ceramic valve core linkage structure, the more conventional pile-up welding hard alloy spool of the hardness due to high tenacity pottery hardness promotes greatly, greatly improves spool operating life.
Three, the technical advantage of bellows stop valve is the small guide vane performance-adjustable of product and the sealability of closed condition; the valve core structure of design has larger adjustment stroke; ensure the controllability of valve under small guide vane; protection can be formed to bellows at full-gear lower valve core simultaneously; bellows does not wash away by medium substantially, can extend the operating life of bellows.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of bellows stop valve of the present invention;
Fig. 2 is filler assembly structural representation of the present invention;
Fig. 3 is valve rod adapter structure of the present invention and connects schematic diagram with valve rod, valve rod.
Reference character is as follows:
1-valve body; 2-locking nut; 3-Expanded graphite pad; 4-spool; 5-valve rod conversion adapter; 6-sealing gasket; 7-spirotallic gasket; Connection pad under 8-bellows; 9-bolt; 10-valve gap; Bellows under 11-; 12-bellows connection pad; 13-valve rod; 14-stuffing box; 15-packing ring; 16-nut; 17-filler; 18-column; 19-stud; 20-Gland; 21-Anti-rotary block; 22-screw; 23-Stem Mut seat; 24-Stem Mut; 25-nut gland; 26-handwheel; 27-hand wheel lock jack panel 27; 28-entrance; 29-exports; 31-pressure transmitter; 32-runner exit; 33-Z font runner; 34-circular groove; Sealing surface on 35-valve rod; 36-stuffing box lower sealing surface.
Embodiment
As shown in Figure 1, bellows stop valve of the present invention is a kind of valve of low in and high out, comprise the handwheel 16, valve rod 3, filler assembly, bellows component, valve gap 10, valve body 1 and the spool 4 that arrange from top to bottom, valve body 1 is provided be connected entrance 28, vertical holes and outlet 29, under the turning effort of handwheel 16, valve rod 3 is with movable valve plug 4 to move up and down in vertical holes, realize conducting or the closedown of entrance 28 and outlet 29, for ensureing the tight seal of valve, the valve rod of this valve adopts bellows component and filler two seals.
As shown in Figure 2, filler assembly comprises stuffing box 14, packing ring 15, filler 17 and Gland 20, and filler 17 is contained in stuffing box 14, and makes filler 17 and valve rod 13 close contact by Gland 20, realizes the sealing between filler 17 and valve rod 13.Circular groove 34 is provided with in packing ring 15, and be connected with the Z-shaped runner 33 arranged in stuffing box 14, when bellows component is broken, flowing medium in stop valve flows out to the pressure transmitter 31 of Z-shaped runner exit 32 place setting by circular groove 34 and Z-shaped runner 33, control signal is fed back to control room, realizes revealing and report to the police.When bellows 11 breaks, realize sealing by filler 17, guarantee safety when rushing to repair.
Bellows component is welded to connect by connection pad 8 under lower bellows 11, upper bellows 30, bellows connection pad 12 and bellows and forms, bellows component is arranged on after on valve rod 13, then connection pad under bellows 8 and valve rod 13 are carried out seal welding, so just achieve the sealing of bellows component and valve rod 13.Bellows 11 in bellows component is an elastic element, can compress and stretch in the process that valve rod 13 moves up and down, and during valve closing, spool 4 coincide with valve body 1 sealing surface of seat, and bellows 11 is in extended state.Otherwise valve opening, bellows element is in compressive state.
In order to increase the control characteristic of valve, the die of spool stroke more common bellows stop valve requires that bellows component has larger compression stroke, so have employed two joint bellowss to increase the stroke of valve, this valve bellows component height 270mm, and the bellows component height of common bellows stop valve is about about 130mm.The bellows component of this valve is specially bellows 30, lower bellows 11 is welded to connect formation bellows component with connection pad 8 under bellows connection pad 12, stuffing box 14 and bellows, after being installed by bellows component, stuffing box 14 and valve gap 10 is welded to connect.
The valve body 1 of valve is connected by bolt 9 with valve gap 10, valve body 1 and valve gap 10 connect rear formation two Seal cages, these two Seal cages are respectively charged into sealing gasket 6 and spirotallic gasket 7, medium in valve body 1 can not leak outside due to the sealing of spirotallic gasket 7, if after spirotallic gasket 7 lost efficacy, sealing gasket 6 can be had to ensure sealing, guarantee that the valve body 1 of valve and valve gap 10 seal reliably by this two seals.
For and reduce the wearing and tearing of spool 4 and valve body and valve seat sealing surface, wish spool 4 upper and lower vertical motion in valve switch process, do not rotate motion, discord valve body and valve seat produces spin friction, and then improves the operating life of spool 4 and valve body and valve seat.Based on above reason, add a valve rod rotation prevention structure.Valve rod 13 is fastening by screw 22 with Anti-rotary block 21, and the U-type groove on Anti-rotary block 22 is stuck on column 18, can only move up and down, because therefore valve rod 13 also can only move up and down with Anti-rotary block 21 is fastening, therefore when handwheel 26 rotates, valve rod moves up and down, and the spool 4 therefore driven with valve rod 13 also can only move up and down, thus reduces the wearing and tearing of spool 4 and valve body and valve seat sealing surface.
As shown in Figure 3, in order to improve the anticorrosive of spool and resistance to erosion ability, spool 11 adopts high tenacity special cermacis, can remarkable poppe tvalve core erosion resistibility, but Ceramic manufacturing difficulty is large, therefore devise a kind of ceramic valve core structure being easy to process, avoid pottery and the screw connection structure of metal, can not at high temperature cause ceramic stress excessive because metal is different with ceramic shrinkage and causes and break.Because the thermal expansion coefficient difference of pottery and metal is larger, ceramic fitting and metalwork are threaded connection and easily hot tearing occur, therefore have employed a kind of novel ceramic valve core-valve rod linkage structure: be provided with through hole in the middle part of spool 4, spool conversion adapter 5 is provided with between spool 4 and valve rod 13, one end of spool conversion adapter 5 connects with the lower end of valve rod 13, the other end through the through hole in the middle part of spool 4, and realizes connection and the sealing of spool 4 and spool conversion adapter 5 by locking nut 2 and Expanded graphite pad 3.The profile being difficult to process is processed on spool conversion adapter 5 by this scheme, by spool conversion adapter 5, valve rod 13 is reliably connected with spool 4, the sealing of spool 4 and spool conversion adapter 5 is realized, the shock resistance of increase spool 4 and overall flexibility simultaneously by a locking nut 2 and Expanded graphite pad 3.
The technical advantage of bellows stop valve is the small guide vane performance-adjustable of product and the sealability of closed condition, and the spool 4 sealing surface cone angle of design is little, and common valve cone angle is 60
.left and right, the cone angle of this valve is 30 degree.Conical surface length is that the twice of common stop valve is many, has larger adjustment stroke, ensures the controllability of valve under small guide vane, guarantees that valve throttling can not occur when standard-sized sheet simultaneously.
Valve is spacing by valve rod 13 seals when standard-sized sheet, and the upper sealing surface of valve rod 35 and the lower sealing surface 36 of stuffing box realize seal and spacing, simultaneously guarantee spool 4 and valve gap 10 gap very little, control this gap between 0.1 ~ 0.25mm by processing dimension; Ceramic valve core 4 and valve body 1 matching hole are by processing matching gap 0.1mm larger than maximum media particle; Above two promise valves working medium when full-gear can not enter bellows component working zone in a large number, thus can not cause bellows component and seriously wash away phenomenon, can form protection, extend the operating life of bellows stop valve to bellows 11.
Claims (9)
1. a bellows stop valve, comprise the handwheel (16) arranged from top to bottom, valve rod (3), filler assembly, bellows component, valve gap (10), valve body (1) and spool (4), valve body (1) is provided with the entrance (28) be connected, vertical holes and outlet (29), under the turning effort of handwheel (16), valve rod (3) band movable valve plug (4) moves up and down in vertical holes, realize conducting or the closedown of entrance (28) and outlet (29), it is characterized in that: described filler assembly comprises stuffing box (14), packing ring (15), filler (17) and Gland (20), filler (17) is contained in stuffing box (14), and make filler (17) and valve rod (13) close contact by Gland (20), realize the sealing between filler (17) and valve rod (13), circular groove (34) is provided with in described packing ring (15), and be connected with the Z-shaped runner (33) arranged in stuffing box (14), when bellows component is broken, working medium in stop valve flows out to the pressure transmitter (31) of Z-shaped runner exit (32) place setting by circular groove (34) and Z-shaped runner (33), realizes revealing reporting to the police.
2. bellows stop valve according to claim 1, is characterized in that: described spool (4) adopts pottery to make.
3. bellows stop valve according to claim 1 and 2, it is characterized in that: spool (4) middle part is provided with through hole, spool conversion adapter (5) is provided with between spool (4) and valve rod (13), one end of spool conversion adapter (5) connects with the lower end of valve rod (13), the other end through the through hole at spool (4) middle part, and realizes connection and the sealing of spool (4) and spool conversion adapter (5) by locking nut (2) and Expanded graphite pad (3).
4. bellows stop valve according to claim 1, it is characterized in that: described bellows component comprises the upper bellows (30) set gradually from top to bottom, bellows connection pad (12), connection pad (8) under lower bellows (11) and bellows, described bellows connection pad (12) is welded between bellows (30) and lower bellows (11), under described bellows, connection pad (8) is welded on the bottom of lower bellows (11), the stuffing box (14) of described bellows component and bellows component upper end defines the sealing to valve rod (13).
5. bellows stop valve according to claim 1, it is characterized in that: the top of valve rod (13) is provided with anti-rotation assembly, described anti-rotation assembly comprises Anti-rotary block (21) and column (18), valve rod (13) and Anti-rotary block (21) are by together with screw fastening, Anti-rotary block is provided with U-shaped draw-in groove, described U-shaped draw-in groove is stuck on column (18), carries out spacing to the rotation of valve rod (13).
6. bellows stop valve according to claim 1, is characterized in that: the half-angle of described spool (4) sealing cone angle is 30 degree.
7. bellows stop valve according to claim 1, is characterized in that: the gap between the upper matching hole arranged of described spool (4) and valve body (1), than flowing through the large 0.1mm of stop valve maximum media particle diameter.
8. bellows stop valve according to claim 1, is characterized in that: gap during stop valve standard-sized sheet between spool (4) upper-end surface and valve gap (10) is 0.1-0.25mm.
9. bellows stop valve according to claim 1, it is characterized in that: valve body (1) and valve gap (10) are connected by bolt (9), be provided with sealing gasket (7) and spirotallic gasket (7) in the Seal cage that point of attachment is formed, realize the sealing between valve body (1) and valve gap (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992151.4A CN105443782A (en) | 2015-12-25 | 2015-12-25 | Corrugated tube stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992151.4A CN105443782A (en) | 2015-12-25 | 2015-12-25 | Corrugated tube stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443782A true CN105443782A (en) | 2016-03-30 |
Family
ID=55554301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510992151.4A Pending CN105443782A (en) | 2015-12-25 | 2015-12-25 | Corrugated tube stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443782A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056708A (en) * | 2019-03-04 | 2019-07-26 | 合肥通用机械研究院有限公司 | The dedicated bellows valve bar assembly of high frequency quck-opening valve |
| CN112984128A (en) * | 2021-02-18 | 2021-06-18 | 浙江万龙机械有限公司 | Corrugated pipe flushing-free valve |
| US20230101258A1 (en) * | 2021-09-27 | 2023-03-30 | Flowserve Management Company | Valve with exchangeable packing seal cartridge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365971A (en) * | 1992-10-09 | 1994-11-22 | Nuovopignone-Industrie Meccaniche E Fonderia S.P.A. | Seal system, particularly suitable for process valves |
| CN200946668Y (en) * | 2006-09-18 | 2007-09-12 | 四川固特阀门制造有限公司 | Chlorine medium dedicated valve |
| CN201166130Y (en) * | 2008-03-28 | 2008-12-17 | 大连亨利测控仪表工程有限公司 | Lining fluorine anti-corrosive control valve |
| CN101701632A (en) * | 2009-11-27 | 2010-05-05 | 浙江万龙机械有限公司 | Bellows stop valve |
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN204201131U (en) * | 2014-10-24 | 2015-03-11 | 江苏神通阀门股份有限公司 | A kind of bellows stop valve |
| CN205244592U (en) * | 2015-12-25 | 2016-05-18 | 西安航天远征流体控制股份有限公司 | Stop valve for corrugated pipe |
-
2015
- 2015-12-25 CN CN201510992151.4A patent/CN105443782A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365971A (en) * | 1992-10-09 | 1994-11-22 | Nuovopignone-Industrie Meccaniche E Fonderia S.P.A. | Seal system, particularly suitable for process valves |
| CN200946668Y (en) * | 2006-09-18 | 2007-09-12 | 四川固特阀门制造有限公司 | Chlorine medium dedicated valve |
| CN201166130Y (en) * | 2008-03-28 | 2008-12-17 | 大连亨利测控仪表工程有限公司 | Lining fluorine anti-corrosive control valve |
| CN101701632A (en) * | 2009-11-27 | 2010-05-05 | 浙江万龙机械有限公司 | Bellows stop valve |
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN204201131U (en) * | 2014-10-24 | 2015-03-11 | 江苏神通阀门股份有限公司 | A kind of bellows stop valve |
| CN205244592U (en) * | 2015-12-25 | 2016-05-18 | 西安航天远征流体控制股份有限公司 | Stop valve for corrugated pipe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056708A (en) * | 2019-03-04 | 2019-07-26 | 合肥通用机械研究院有限公司 | The dedicated bellows valve bar assembly of high frequency quck-opening valve |
| CN110056708B (en) * | 2019-03-04 | 2020-07-07 | 合肥通用机械研究院有限公司 | Special corrugated pipe valve rod assembly for high-frequency quick-opening valve |
| CN112984128A (en) * | 2021-02-18 | 2021-06-18 | 浙江万龙机械有限公司 | Corrugated pipe flushing-free valve |
| US20230101258A1 (en) * | 2021-09-27 | 2023-03-30 | Flowserve Management Company | Valve with exchangeable packing seal cartridge |
| US11852261B2 (en) * | 2021-09-27 | 2023-12-26 | Flowserve Pte. Ltd. | Valve with exchangeable packing seal cartridge |
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Application publication date: 20160330 |
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