CN103671948A - Emergency shut-off valve with corrugated pipe - Google Patents
Emergency shut-off valve with corrugated pipe Download PDFInfo
- Publication number
- CN103671948A CN103671948A CN201310725298.8A CN201310725298A CN103671948A CN 103671948 A CN103671948 A CN 103671948A CN 201310725298 A CN201310725298 A CN 201310725298A CN 103671948 A CN103671948 A CN 103671948A
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- CN
- China
- Prior art keywords
- valve
- bellows
- valve rod
- valve body
- cavity
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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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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
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
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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
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
Abstract
The invention discloses an emergency shut-off valve with a corrugated pipe. The emergency shut-off valve with the corrugated pipe comprises a pressing screw plug (1), an upper valve body (2), a valve seat (3), a lower valve body (4) and a valve rod (5), wherein the top of the valve rod (5) is connected with an upper valve rod (14) which is installed in the upper valve body (2), the bottom of the valve rod (5) is connected with a valve plug (6), the valve rod (5) is sleeved with the corrugated pipe (8) in the axial direction, the corrugated pipe (8) is arranged in the valve seat (3), the bottom of the corrugated pipe (8) and the valve rod (5) are fixedly connected, and are sealed, the top of the corrugated pipe (8) is connected with a disk (9), a cavity is formed in the valve seat (3), the corrugated pipe (8) is installed in the cavity, an annular step surface is arranged on the side wall of the cavity, a sealing ring (10) is installed on the annular step surface, and the disk (9) is tightly pressed by the pressing screw plug (1) installed on the top of the step surface. The emergency shut-off valve with the corrugated pipe has the advantages that the structure is simple, sealing is tight, and the opening-and-closing process is more flexible and rapider.
Description
Technical field
The present invention relates to Emergeny Cutoff Valves technical field of sealing technology, particularly a kind of Emergeny Cutoff Valves with bellows.
Background technique
Low temperature Emergeny Cutoff Valves is again safety cut-off valve, refers to that, when running into emergency case, valve is closed rapidly, with the gas distribution channel in cutting-off valve, avoids the generation that causes the accident, thereby has safe and reliable effect.
The general packing seal structure adopting in valve rod place of low temperature Emergeny Cutoff Valves, prevents that gas medium from leaking outside.Filler is sleeved on around valve rod, then with Gland, compresses filler, makes filler hold valve rod tightly and forms sealing.Because filler is held valve rod tightly, can make valve opening and close difficulty and strengthen, being not closed completely, causing interior leakage, simultaneously, when supercharging compresses filler, in the time of need to closing this valve, the pressure of the cylinder that requires is larger, because cylinder pressure is design steady state value, therefore can cause valve closing power inadequate, cause being not closed completely, micro-leakage phenomenon, the situation that this often occurs while being also market use.
And when valve is repeatedly opened or closes, valve rod and filler do relative motion, can cause the wearing and tearing of filler, after a period of time, it is large that the gap between valve rod and seal ring becomes, also can cause gas medium to leak outside, therefore need constantly to adjust Gland and compress filler, gas medium can not leaked outside.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of simple in structure, sealing is tight, opening-closing process is more flexibly fast with the Emergeny Cutoff Valves of bellows.
Object of the present invention is achieved through the following technical solutions: a kind of Emergeny Cutoff Valves with bellows, it comprises compression plug screw, upper valve body, valve seat, lower valve body and valve rod, upper valve body is arranged on valve seat top, lower valve body is arranged on valve seat bottom, valve rod is successively through lower valve body, valve seat and upper valve body, the top of valve rod be arranged on upper valve rod in upper valve body and be connected, the bottom of valve rod is connected with spool, upper valve rod top is provided with handwheel, on described valve rod axial direction, be set with bellows, bellows is arranged in valve seat, bellows bottom is fixedly connected with and seals with valve rod, the top of bellows is connected with disk, valve seat is provided with the cavity that bellows is installed, on the sidewall of cavity, there is an annular table terrace, the bottom of bellows is positioned at the cavity of the below of annular table terrace, disk is positioned at the top of annular table terrace, on annular table terrace, seal ring is installed, disk is compressed by the compression plug screw that is installed on step surface top, and by the gap between seal ring sealed disc and step surface.
?in described lower valve body, be provided with gas distribution channel.
?described gas distribution channel is divided into air-inlet cavity and outlet chamber by lower valve body.
Described spool is positioned at the external diameter that the top of gas distribution channel and the external diameter of spool are greater than gas distribution channel.
Described compression plug screw is set in valve rod outside, and is threaded connection with the cavity on annular table terrace top.
The present invention has the following advantages: on the axial direction of (1) valve rod of the present invention, be installed with bellows, disk is connected to bellows top, when bellows moves up and down unlatching or cuts out the gas distribution channel in lower valve base with valve rod, upper end and the disk of bellows closely weld, bellows has prevented that the gas medium in valve body from overflowing from compressing between plug screw and disk, and bellows can and not be arranged on the seal ring friction between disk and valve seat, there is gas distribution channel and open and close more flexibly feature fast.(2) bellows bottom is closely welded with lower disc, lower disc is set on valve rod and with valve rod and closely welds, thereby, by the tight welding of the tight welding between valve rod and lower disc, bellows lower end and lower disc, realized the lower end mouth by valve rod and lower disc seal bellows, prevented from overflowing the gap of gas medium between valve rod and bellows.(3) top of valve seat is placed with annular seal ring, the compacted plug screw of disk presses on seal ring and compresses between plug screw, compressing plug screw is connected with valve seat through valve rod, seal ring is polytetrafluoroethylsealed sealed circle, polytetrafluoroethylsealed sealed circle is more metastable static seal, polytetrafluoroethylsealed sealed circle can effectively prevent that gas medium in valve body is from the gap between disk and step surface, has the tight feature of sealing.
Accompanying drawing explanation
Structural representation when Fig. 1 is gas distribution channel unlatching of the present invention;
Fig. 2 is the structural representation of gas distribution channel of the present invention while closing;
Fig. 3 is the I enlarged view of Fig. 2;
In figure, 1-compresses plug screw, 2-upper valve body, 3-valve seat, valve body under 4-, 5-valve rod, 6-spool, 7-handwheel, 8-bellows, 9-disk, 10-seal ring, 11-gas distribution channel, 12-air-inlet cavity, 13-outlet chamber, 14-upper valve rod.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As shown in Figure 1 or 2, a kind of Emergeny Cutoff Valves with bellows, it comprises compression plug screw 1, upper valve body 2, valve seat 3, lower valve body 4 and valve rod 5, upper valve body 2 is arranged on valve seat 3 tops, lower valve body 4 is arranged on valve seat bottom, valve rod 5 is successively through lower valve body 4, valve seat 3 and upper valve body 2, the top of valve rod 5 be arranged on the interior upper valve rod 14 of upper valve body 2 and be connected, the bottom of valve rod 5 is connected with spool 6, upper valve rod 14 tops are provided with handwheel 7, on described valve rod 5 axial directions, be set with bellows 8, bellows 8 is arranged in valve seat 3, bellows 8 bottoms are fixedly connected with and seal with valve rod 5, bellows 8 bottoms are closely welded with lower disc, lower disc is set on valve rod 5 and with valve rod 5 and closely welds, thereby, by the tight welding between valve rod and lower disc, the tight welding of bellows 8 lower ends and lower disc, realized the lower end mouth by valve rod 5 and lower disc seal bellows, the top of bellows 8 is connected with disk 9, the upper end of bellows 8 and disk 9 closely weld, valve seat 3 is provided with the cavity that bellows 8 is installed, on the sidewall of cavity, there is an annular table terrace, the bottom of bellows 8 is positioned at the cavity of the below of annular table terrace, disk 9 is positioned at the top of annular table terrace, seal ring 10 is installed on annular table terrace, disk 9 is compressed by the compression plug screw 1 that is installed on step surface top, and by the gap between seal ring 10 sealed discs 9 and step surface, in lower valve body 4, be provided with gas distribution channel 11.Gas distribution channel 11 is divided into air-inlet cavity 12 and outlet chamber 13 by lower valve body 4; Spool 6 is positioned at the external diameter that the top of gas distribution channel 11 and the external diameter of spool 6 are greater than gas distribution channel 11; Compress plug screw 1 and be set in valve rod 5 outsides, and be threaded connection with the cavity on annular table terrace top.Described bellows 8 indentations, are made by soft material, can compressed or stretching.
Working procedure of the present invention is as follows: rotation hand wheel 7, handwheel 7 drives upper valve rod 14 to move down, upper valve rod 14 band ovable valve stems 5 move down, valve rod 5 band movable valve plugs 6 move down, spool 6 covers gas distribution channel 11, as shown in Figure 2, therefore the gas medium in air-inlet cavity 12 can not enter outlet chamber 13, thereby complete closing of valve body, in this process, the bellows 8 being fixed on valve rod 5 axial directions stretches downwards, because the top of bellows 8 is connected with disk 9 all the time, bellows 8 has prevented that the gas medium in valve body is from compressing effusion between plug screw 1 and disk 9, and bellows 8 move down Shi Buhui and be arranged on disk 9 and valve seat 3 between seal ring 10 friction, there is gas distribution channel 11 and close the feature of fast and flexible.Counterrotating handwheel 7, handwheel 7 drives upper valve rod 14 to move up, upper valve rod 14 band ovable valve stems 5 move up, valve rod 5 band movable valve plugs 6 move up, as shown in Figure 1, now the dielectric gas in air-inlet cavity 12 enters outlet chamber 13 through gas distribution channel 11, thereby complete the unlatching of valve body, in this process, the bellows 8 being fixed on valve rod 5 axial directions moves up, bellows 8 is compressed on disk 9, because the top of bellows 8 is connected with disk 9 all the time, bellows 8 has prevented that the gas medium in valve body is from compressing effusion between plug screw 1 and disk 9, and bellows 8 move up Shi Buhui and be arranged on disk 9 and valve seat 3 between seal ring 10 friction, have the advantages that gas distribution channel 11 is opened fast and flexible.The top of valve seat 3 is placed with annular seal ring 10, the compacted plug screw 1 of disk 9 presses on seal ring 10 and compresses between plug screw 1, compressing plug screw 1 is connected with valve seat 3 through valve rod 5, seal ring 10 is polytetrafluoroethylsealed sealed circle, polytetrafluoroethylsealed sealed circle is more metastable static seal, and polytetrafluoroethylsealed sealed circle can effectively prevent from gas medium in valve body from disk 9 and compress between plug screw 1 overflowing.
Claims (5)
1. the Emergeny Cutoff Valves with bellows, it comprises compression plug screw (1), upper valve body (2), valve seat (3), lower valve body (4) and valve rod (5), upper valve body (2) is arranged on valve seat (3) top, lower valve body (4) is arranged on valve seat bottom, valve rod (5) is successively through lower valve body (4), valve seat (3) and upper valve body (2), the top of valve rod (5) be arranged on the interior upper valve rod of upper valve body (2) (14) and be connected, the bottom of valve rod (5) is connected with spool (6), upper valve rod (14) top is provided with handwheel (7), it is characterized in that: on described valve rod (5) axial direction, be set with bellows (8), bellows (8) is arranged in valve seat (3), bellows (8) bottom is fixedly connected with and seals with valve rod (5), the top of bellows (8) is connected with disk (9), valve seat (3) is provided with the cavity that bellows (8) is installed, on the sidewall of cavity, there is an annular table terrace, the bottom of bellows (8) is positioned at the cavity of the below of annular table terrace, disk (9) is positioned at the top of annular table terrace, seal ring (10) is installed on annular table terrace, disk (9) is compressed by the compression plug screw (1) that is installed on step surface top, and by the gap between seal ring (10) sealed disc (9) and step surface.
2. a kind of Emergeny Cutoff Valves with bellows according to claim 1, is characterized in that: in described lower valve body (4), be provided with gas distribution channel (11).
3. a kind of Emergeny Cutoff Valves with bellows according to claim 2, is characterized in that: described gas distribution channel (11) is divided into air-inlet cavity (12) and outlet chamber (13) by lower valve body (4).
4. a kind of Emergeny Cutoff Valves with bellows according to claim 1, is characterized in that: described spool (6) is positioned at the external diameter that the top of gas distribution channel (11) and the external diameter of spool (6) are greater than gas distribution channel (11).
5. a kind of Emergeny Cutoff Valves with bellows according to claim 1, is characterized in that: described compression plug screw (1) is set in valve rod (5) outside, and is threaded connection with the cavity on annular table terrace top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725298.8A CN103671948B (en) | 2013-12-25 | 2013-12-25 | A kind of quick action emergency valve of band bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725298.8A CN103671948B (en) | 2013-12-25 | 2013-12-25 | A kind of quick action emergency valve of band bellows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671948A true CN103671948A (en) | 2014-03-26 |
| CN103671948B CN103671948B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310725298.8A Active CN103671948B (en) | 2013-12-25 | 2013-12-25 | A kind of quick action emergency valve of band bellows |
Country Status (1)
| Country | Link |
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| CN (1) | CN103671948B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420556A (en) * | 2017-08-30 | 2017-12-01 | 简阳市中原低温设备配套有限公司 | A kind of electromagnetic type quick action emergency valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29809524U1 (en) * | 1998-05-27 | 1998-11-05 | Fichtner Lothar Dipl Ing | Coverless valve insert for bellows 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 |
| CN201326823Y (en) * | 2008-12-18 | 2009-10-14 | 江苏明江阀业有限公司 | Corrugated pipe stop valve for chlorine |
| CN201902682U (en) * | 2010-11-17 | 2011-07-20 | 上海凯莱阀门制造有限公司 | Stop valve of corrugated pipe |
| CN201944398U (en) * | 2011-02-28 | 2011-08-24 | 浙江科海仪表有限公司 | Electric integrated temperature controlling valve |
| CN202001629U (en) * | 2010-09-02 | 2011-10-05 | 浙江盾安阀门有限公司 | Bellow stop valve |
| CN202252039U (en) * | 2011-09-30 | 2012-05-30 | 山东泰丰阀业有限公司 | Stop valve of liquid chlorine fluorine corrugated pipe |
| CN203614764U (en) * | 2013-12-25 | 2014-05-28 | 简阳市中原低温设备配套有限公司 | Emergency shut valve with corrugated pipe |
-
2013
- 2013-12-25 CN CN201310725298.8A patent/CN103671948B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29809524U1 (en) * | 1998-05-27 | 1998-11-05 | Fichtner Lothar Dipl Ing | Coverless valve insert for bellows 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 |
| CN201326823Y (en) * | 2008-12-18 | 2009-10-14 | 江苏明江阀业有限公司 | Corrugated pipe stop valve for chlorine |
| CN202001629U (en) * | 2010-09-02 | 2011-10-05 | 浙江盾安阀门有限公司 | Bellow stop valve |
| CN201902682U (en) * | 2010-11-17 | 2011-07-20 | 上海凯莱阀门制造有限公司 | Stop valve of corrugated pipe |
| CN201944398U (en) * | 2011-02-28 | 2011-08-24 | 浙江科海仪表有限公司 | Electric integrated temperature controlling valve |
| CN202252039U (en) * | 2011-09-30 | 2012-05-30 | 山东泰丰阀业有限公司 | Stop valve of liquid chlorine fluorine corrugated pipe |
| CN203614764U (en) * | 2013-12-25 | 2014-05-28 | 简阳市中原低温设备配套有限公司 | Emergency shut valve with corrugated pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420556A (en) * | 2017-08-30 | 2017-12-01 | 简阳市中原低温设备配套有限公司 | A kind of electromagnetic type quick action emergency valve |
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| Publication number | Publication date |
|---|---|
| CN103671948B (en) | 2016-08-24 |
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