CN102072332A - Nitrogen sealing gas shut-off valve - Google Patents
Nitrogen sealing gas shut-off valve Download PDFInfo
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- CN102072332A CN102072332A CN 201110031001 CN201110031001A CN102072332A CN 102072332 A CN102072332 A CN 102072332A CN 201110031001 CN201110031001 CN 201110031001 CN 201110031001 A CN201110031001 A CN 201110031001A CN 102072332 A CN102072332 A CN 102072332A
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- screw mandrel
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Abstract
The invention discloses a nitrogen sealing gas shut-off valve, comprising a valve body, two valve plates and a plate supporting mechanism, wherein the two valve plates are arranged in a valve cavity corresponding to an inlet and an outlet; and the plate supporting mechanism is used for driving the two valve plates to close and open. A nitrogen inlet and a gas discharging port communicated with the valve cavity are mounted on the wall of the valve body; a track is horizontally arranged, vertical to the flowing direction of the medium, on the top wall or the bottom wall of the valve cavity; the two valve plates are connected with lifting wheels or rolling wheels via a connecting element, wherein the lifting wheels or the rolling wheels are mounted in the track; the connecting element is provided with a nut which is matched with a screw rod of a moving plate; the screw rod of the moving plate extends out of the valve cavity in a sealing mode and is in transmission connection with an electrical device of the moving plate; a connection rod plate supporting mechanism is mounted between the two valve plates; and a valve plate opening and closing screw rod is connected with an electrical executing device via a clutch. The nitrogen sealing gas shut-off valve is not limited by the mounting mode, and is small in mounting space; when in use, the waste gas (nitrogen) separated from the power workshop is used as the protective gas so that the water source is saved and the gas seal function is implemented.
Description
Technical field
The present invention relates to the fuel gas shutoff valve, especially relate to nitrogen-sealed fuel gas shutoff valve.
Background technique
The fuel gas shutoff valve is widely used in coal gas, the flue gas system pipelines such as metallurgy, municipal engineering, chemical industry and reaches in the blast furnace gas generation engineering.Present existing fuel gas shutoff valve mostly is water seal fuel gas shutoff valve, as shown in Figure 4, adopts voussoir to promote valve plate and seals.Occur deadlock phenomenon if voussoir designs easily when unreasonable, the friction torque of voussoir is bigger during throttle down, and during fagging because valve plate bears inhomogeneous axial force, easily cause the distortion of valve body and screw mandrel.Above-mentioned water seal fuel gas shutoff valve can only vertically be installed, and it is big to take up room.Rising stem (RS.) fuel gas shutoff valve setting height(from bottom) is 4.5 times of valve aperture, and dark bar fuel gas shutoff valve setting height(from bottom) is 3.5 times of valve aperture, and mounting type is limited.For antirust, parts such as voussoir, valve plate, screw mandrel need adopt stainless steel material, the manufacture cost height.Simultaneously, water seal fuel gas shutoff valve adopts purified water, uses once materials such as containing the tar dust in the water of back, could reuse after must purifying, not only to valve body seriously corroded but also waste water resource.When pipe temperature dropped to freezing point, the water freezing in the valve pocket caused valve to open, and influences the normal use of valve.Sealing water enters pipeline after the valve plate seal ring damages, and directly influences the conveying of inflammable gas.
Summary of the invention
The nitrogen-sealed fuel gas shutoff valve that the object of the invention is to provide a kind of and saves water resources, takes up room is little, operation is light.
For achieving the above object, the present invention can take following technical proposals:
Nitrogen-sealed fuel gas shutoff valve of the present invention, it comprises the valve body that is provided with import, outlet, is arranged on two valve plates in the described valve body valve pocket corresponding to described import, outlet, is used to drive the fagging mechanism that described two valve plates open and close; Described valve body wall is provided with nitrogen inlet and the gas emission mouth that communicates with valve pocket; Be horizontally disposed with track perpendicular to the medium circulating direction on the roof of valve pocket or diapire, described two valve plates link by link and the hanging wheel or the roller that are arranged in the described track; Described link is provided with and moves the nut that the plate screw mandrel matches, and describedly moves plate screw mandrel sealing and extends outside the valve pocket and move plate Electric actuator transmission joint.Between two valve plates, be provided with connecting rod fagging mechanism, described connecting rod fagging mechanism comprises that the valve plate that is horizontally set on the valve pocket middle part perpendicular to the medium circulating direction opens and closes screw mandrel, is symmetrical in described valve plate and opens and closes left-handed nut and the right-handed nut that the screw mandrel vertical center line is arranged on its both sides, and described left-handed nut and right-handed nut are hinged by connecting rod, fagging connecting rod and two valve plates respectively; Valve plate opens and closes screw mandrel and connects with electric performance device by clutch.
Described two valve plates are the rectangular plate structure; It is the trapezoidal thread screw mandrel that described valve plate opens and closes screw mandrel.
In described valve pocket corresponding to being respectively arranged with valve plate upper rail and valve plate lower rail on the sidewall of two valve plates He on the valve pocket diapire.
The invention has the advantages that not to be subjected to installation form restriction, installing space little, during use, will use our unit's power house separated waste gases (nitrogen), both saved water resources, play the hermetic seal effect again as shielding gas.Two valve plates strut, when closing up, open electric performance device counterclockwise or clockwise rotate, drive two valve plates by left-handed nut and right-handed nut's drivening rod, fagging and strut or close up, make that the sealing pair of two valve plates is stressed evenly, the electric performance device output power is little, and valve plate opens and closes flexibility and reliability.After valve two valve plates close up, unlatching moves the plate Electric actuator two valve plates and connecting rod fagging mechanism is shifted out the MEDIA FLOW circulation passage along track, reduced the circulating resistance of valve pocket inner fluid medium greatly, this moment, valve plate opened and closed screw mandrel by clutch and electric performance device disengaging.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to the sectional structure schematic representation.
Fig. 3 is a connecting rod fagging mechanism structure schematic representation of the present invention.
Fig. 4 is the structural representation of existing fuel gas shutoff valve.
Embodiment
As shown in the figure, nitrogen-sealed fuel gas shutoff valve of the present invention, it comprises the valve body 3 that is provided with import 1, outlet 2, corresponding to described import 1, outlet 2 two valve plates 4,5 that are arranged in described valve body 3 valve pockets, is used to drive the fagging mechanism that described two valve plates 4,5 open and close; Described valve body wall is provided with nitrogen inlet 6 and the gas emission mouth 7 that communicates with valve pocket; Be horizontally disposed with track 8 perpendicular to the medium circulating direction on the roof of valve pocket, described two valve plates 4,5 link by link 9 and the hanging wheel 10 that is arranged in the described track 8; Described link 9 is provided with and moves the nut that plate screw mandrel 11 matches, and describedly moves plate screw mandrel 11 sealing and extends outside the valve pocket and move plate Electric actuator 12 transmission joint; Between two valve plates 4,5, be provided with connecting rod fagging mechanism, described connecting rod fagging mechanism comprises that the valve plate that is horizontally set on the valve pocket middle part perpendicular to the medium circulating direction opens and closes screw mandrel 13, is symmetrical in described valve plate and opens and closes left-handed nut 14 and the right-handed nut 15 that screw mandrel 13 vertical center lines are arranged on its both sides, and described left-handed nut 14 and right-handed nut 15 are hinged by connecting rod 16,17, fagging connecting rod 18,19 and two valve plates 4,5 respectively; Valve plate opens and closes screw mandrel 13 by clutch 20 and electric performance device 21 transmission joint.Described two valve plates 4,5 all are arranged to the rectangular plate structure; It is the trapezoidal thread screw mandrel that valve plate opens and closes screw mandrel 13.In valve pocket corresponding to being respectively arranged with valve plate upper rail 22 and valve plate lower rail 23 on the sidewall of two valve plates 4,5 and on the valve pocket diapire.
Claims (3)
1. nitrogen-sealed fuel gas shutoff valve, it comprises the valve body (3) that is provided with import (1), outlet (2), be arranged on two valve plates (4,5) in described valve body (3) valve pocket corresponding to described import (1), outlet (2), be used to drive the fagging mechanism that described two valve plates (4,5) open and close; It is characterized in that: described valve body wall is provided with nitrogen inlet (6) and the gas emission mouth (7) that communicates with valve pocket; Be horizontally disposed with track (8) perpendicular to the medium circulating direction on the roof of valve pocket or diapire, described two valve plates (4,5) link by link (9) and the hanging wheel (10) or the roller that are arranged in the described track (8); Described link (9) is provided with and moves the nut that plate screw mandrel (11) matches, and describedly moves plate screw mandrel (11) sealing and extends outside the valve pocket and move plate Electric actuator (12) and connect; Between two valve plates (4,5), be provided with connecting rod fagging mechanism, described connecting rod fagging mechanism comprises that the valve plate that is horizontally set on the valve pocket middle part perpendicular to the medium circulating direction opens and closes screw mandrel (13), is symmetrical in described valve plate and opens and closes left-handed nut (14) and the right-handed nut (15) that screw mandrel (13) vertical center line is arranged on its both sides, and described left-handed nut (14) and right-handed nut (15) are hinged by connecting rod (16,17), fagging connecting rod (18,19) and two valve plates (4,5) respectively; Valve plate opens and closes screw mandrel (13) by clutch (20) and electric performance device (21) transmission joint.
2. nitrogen-sealed fuel gas shutoff valve according to claim 1 is characterized in that: described two valve plates (4,5) are the rectangular plate structure; It is the trapezoidal thread screw mandrel that described valve plate opens and closes screw mandrel (13).
3. nitrogen-sealed fuel gas shutoff valve according to claim 1 and 2 is characterized in that: in described valve pocket corresponding to being respectively arranged with valve plate upper rail (22) and valve plate lower rail (23) on the sidewall of two valve plates (4,5) He on the valve pocket diapire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110031001 CN102072332A (en) | 2011-01-28 | 2011-01-28 | Nitrogen sealing gas shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110031001 CN102072332A (en) | 2011-01-28 | 2011-01-28 | Nitrogen sealing gas shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102072332A true CN102072332A (en) | 2011-05-25 |
Family
ID=44030997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110031001 Pending CN102072332A (en) | 2011-01-28 | 2011-01-28 | Nitrogen sealing gas shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976353A (en) * | 2015-05-20 | 2015-10-14 | 大众阀门集团有限公司 | Expanding non-rising stem stop valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB287368A (en) * | 1927-06-28 | 1928-03-22 | Power Gas Ltd | Improvements in gas valves |
| CN2396241Y (en) * | 1999-10-27 | 2000-09-13 | 吉卫星 | Double sluice valve |
| CN2463619Y (en) * | 2001-02-09 | 2001-12-05 | 刘连城 | Horizontal blind plate valve |
| CN2618009Y (en) * | 2003-04-24 | 2004-05-26 | 武汉钢铁设计研究总院 | Gas pipe separating connector |
| CN201925503U (en) * | 2011-01-28 | 2011-08-10 | 郑州郑阀阀门有限公司 | Nitrogen-seal gas stop valve |
-
2011
- 2011-01-28 CN CN 201110031001 patent/CN102072332A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB287368A (en) * | 1927-06-28 | 1928-03-22 | Power Gas Ltd | Improvements in gas valves |
| CN2396241Y (en) * | 1999-10-27 | 2000-09-13 | 吉卫星 | Double sluice valve |
| CN2463619Y (en) * | 2001-02-09 | 2001-12-05 | 刘连城 | Horizontal blind plate valve |
| CN2618009Y (en) * | 2003-04-24 | 2004-05-26 | 武汉钢铁设计研究总院 | Gas pipe separating connector |
| CN201925503U (en) * | 2011-01-28 | 2011-08-10 | 郑州郑阀阀门有限公司 | Nitrogen-seal gas stop valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976353A (en) * | 2015-05-20 | 2015-10-14 | 大众阀门集团有限公司 | Expanding non-rising stem stop valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110525 |