CN201925503U - Nitrogen-seal gas stop valve - Google Patents
Nitrogen-seal gas stop valve Download PDFInfo
- Publication number
- CN201925503U CN201925503U CN2011200301570U CN201120030157U CN201925503U CN 201925503 U CN201925503 U CN 201925503U CN 2011200301570 U CN2011200301570 U CN 2011200301570U CN 201120030157 U CN201120030157 U CN 201120030157U CN 201925503 U CN201925503 U CN 201925503U
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- valve
- nitrogen
- plate
- plates
- screw mandrel
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- Expired - Lifetime
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a nitrogen-seal gas stop valve which comprises a valve body, two valve plates and a plate bracing mechanism, wherein the two valve plates correspond to an inlet and an outlet, and are arranged in a valve cavity; the bracing mechanism is used for driving the two valve plates to be opened and closed; a nitrogen inlet and a gas discharge port, which are communicated with the valve cavity, are arranged on the wall of the valve body; rails, which are vertical to the communication direction of a medium, are horizontally arranged at the top wall or the bottom wall of the valve cavity; the two valve plates are connected with a hanging wheel or a rolling wheel in the rails through a connecting piece; the connecting piece is provided with a nut matched with a moving plate screw rod; the moving plate screw rod extends out of the valve cavity in a sealing way to be in transmission connection with a moving plate electric actuator; the connecting rod plate bracing mechanism is arranged between the two valve plates; and a valve plate opening and closing screw rod is connected with an electric executor through a clutch. The nitrogen-seal gas stop valve has the advantages that the installing form is not limited, and the installing space is small; and when the nitrogen-seal gas stop valve is in use, waste gas (nitrogen) separated from a unit power workshop is used as protective gas, so that not only can water resources be saved, but also a gas sealing function is achieved.
Description
Technical field
The utility model relates to the fuel gas shutoff valve, especially relates 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 utility model purpose is to provide a kind of and saves water resources, takes up room is little, operation is light.
For achieving the above object, the utility model can be taked following technical proposals:
Nitrogen-sealed fuel gas shutoff valve described in the utility model, 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 utility model advantage is not to be subjected to installation form restriction, installing space little, during use, will use our unit's power house separated waste gases (nitrogen) as shielding gas, has both saved water resources, plays the hermetic seal effect again.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 utility model.
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 described in the utility model.
Fig. 4 is the structural representation of existing fuel gas shutoff valve.
Embodiment
As shown in the figure, nitrogen-sealed fuel gas shutoff valve described in the utility model, 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 |
|---|---|---|---|
| CN2011200301570U CN201925503U (en) | 2011-01-28 | 2011-01-28 | Nitrogen-seal gas stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200301570U CN201925503U (en) | 2011-01-28 | 2011-01-28 | Nitrogen-seal gas stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925503U true CN201925503U (en) | 2011-08-10 |
Family
ID=44429351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200301570U Expired - Lifetime CN201925503U (en) | 2011-01-28 | 2011-01-28 | Nitrogen-seal gas stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925503U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072332A (en) * | 2011-01-28 | 2011-05-25 | 郑州郑阀阀门有限公司 | Nitrogen sealing gas shut-off valve |
| CN105179723A (en) * | 2015-06-15 | 2015-12-23 | 秦皇岛中青冶金阀门有限公司 | Air seal double-gate-disc brake valve |
-
2011
- 2011-01-28 CN CN2011200301570U patent/CN201925503U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072332A (en) * | 2011-01-28 | 2011-05-25 | 郑州郑阀阀门有限公司 | Nitrogen sealing gas shut-off valve |
| CN105179723A (en) * | 2015-06-15 | 2015-12-23 | 秦皇岛中青冶金阀门有限公司 | Air seal double-gate-disc brake valve |
| CN105179723B (en) * | 2015-06-15 | 2017-12-26 | 秦皇岛中青冶金阀门有限公司 | A kind of sealing gland double-flashboard gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |