CN203836310U - Self-closed type valve used in gas conveying pipeline - Google Patents
Self-closed type valve used in gas conveying pipeline Download PDFInfo
- Publication number
- CN203836310U CN203836310U CN201420260436.XU CN201420260436U CN203836310U CN 203836310 U CN203836310 U CN 203836310U CN 201420260436 U CN201420260436 U CN 201420260436U CN 203836310 U CN203836310 U CN 203836310U
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- China
- Prior art keywords
- valve
- self
- gas
- valve rod
- positioning plate
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- Withdrawn - After Issue
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Abstract
The utility model discloses a self-closed type valve used in a gas conveying pipeline. The self-closed type valve used in the gas conveying pipeline comprises a T-shaped structure valve body which is composed of a gas inlet channel, a gas outlet channel and a control cavity. A valve deck is arranged on the upper portion of the control cavity in a sealing mode, the lower end of a valve rod which extends into the control cavity from the center of the valve deck is fixedly connected with a valve element arranged between the gas inlet channel and the gas outlet channel, and a control handle is arranged at the upper end of the valve rod placed outside the valve deck. The valve rod placed inside the valve deck is sleeved with a torsional spring, and the two ends of the torsional spring are connected with the valve rod and the valve deck respectively. The valve rod at the position close to the valve element is provided with a positioning plate in sliding and sleeved modes, and the outer peripheral face of the positioning plate is connected with the inner wall of the control cavity through an elastic ring membrane in a sealing mode. The valve rod placed above the positioning plate is fixedly provided with a limiting plate in a spaced mode, and positioning pits and positioning bosses which are matched with the positioning pits in position are formed on the opposite faces of the positioning plate and the limiting plate respectively. The self-closed type valve used in the gas conveying pipeline has the advantages of being simple in structure, and the self-closing function can be achieved after gas is cut off.
Description
Technical field
The utility model relates to valve, especially relates to a kind of self-closing valve for gas transfer pipeline.
Background technique
It is conventional mode in production and life that gas is carried by pipeline.As the combustion gas using in people's life is transported to huge numbers of families by pipeline, also have in addition the even dangerous gas of some high pressure also to carry by pipeline.In actual life, combustion gas has become the essential energy in people's daily life, because people understand the lack of knowledge of using these gases safely, even the use of these hazardous gases is not had to security precautions, cause a lot of unnecessary losses and accident.Particularly, in the time stopping the supple of gas or steam suddenly, can often occur that user does not have in time or forget the phenomenon of throttle down, in the time recovering normal air feed, easily causes gas leakage accidents.
Current existing gas delivery valve door is automatic closed function after mostly not dying, and cost of production is high, difficulty is installed, closure effect is not good, poor reliability, some valve can't regulate opening degree, only has open and close two states, these defects be all gas particularly hazardous gas conveying and take and brought inconvenience and potential safety hazard.
Summary of the invention
The purpose of this utility model is to provide a kind of easy to operate, reliable self-closing valve for gas transfer pipeline of sealing.
For achieving the above object, the utility model can be taked following technical proposals:
Self-closing valve for gas transfer pipeline described in the utility model, comprise the valve body of the T character form structure being formed by gas-entered passageway, outlet passageway and control chamber, top seal at described control chamber is provided with valve gap, the valve rod lower end extending into from described valve gap center in control chamber is fixedly connected with the spool in outlet passageway with being arranged on described gas-entered passageway, and the valve rod upper end being placed in outside described valve gap is provided with Joystick; Be positioned on the valve rod of described valve gap and be set with torque spring, the two ends of described torque spring are connected with valve gap with valve rod respectively; Near flip sleeve on the valve rod of described valve element position, positioning plate is being housed, the outer circumferential face of described positioning plate is connected with described control chamber inner wall sealing by elastic ring film; Be positioned at interval on the valve rod of positioning plate top and be fixedly installed limiting board, the positioning boss that offers respectively location pit and match with its position on the opposing side of described positioning plate and limiting board.
The height of described positioning boss is 3 ~ 7mm.
The stainless steel diaphragm that described elastic ring film is thickness 0.02 ~ 0.3mm, also other stress metal diaphragm of choice for use as required, as HC/HB(Hastelloy), Ta (tantalum), Ti(titanium), paste the diaphragms such as tetrafluoros (teflon), monel metal.
Described spool is hemispherical dome structure.
On the junction plane of described valve gap and valve body, be provided with seal ring.
Described location pit and positioning boss be shaped as coadapted hemisphere.
Offer uniformly at intervals multiple location pit at described positioning plate upper surface, be provided with uniformly at intervals multiple positioning boss at described limiting board lower surface.
The utility model has the advantage of simple in structure, can realize the energy function of closure automatically after dying, after effectively having prevented from dying, forget throttle down, after ventilation, there is again the accident of Leakage Gas, meanwhile, according to the rotation angle of Joystick, make Spool rotating angle difference, thereby change the circulation area of gas, reach the object of adjusting gas flow, be particularly suitable as hazardous gas as the control valve use in natural gas transport pipeline.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model while closing.
Structural representation when Fig. 2 is the utility model unlatching.
Fig. 3 is the structural representation of positioning plate in Fig. 1.
Fig. 4 is the structural representation of limiting board in Fig. 1.
Embodiment
As Figure 1-4, self-closing valve for gas transfer pipeline described in the utility model, comprise the valve body of the T character form structure being formed by gas-entered passageway 1, outlet passageway 2 and control chamber 3, be provided with valve gap 4 in the top seal of control chamber 3, on the junction plane of valve gap 4 and valve body, be provided with seal ring 12; Extend into valve rod 5 lower ends in control chamber 3 is fixedly connected with the spool 6 that is arranged on the hemispherical dome structure in gas-entered passageway 1 and outlet passageway 2 from valve gap 4 centers; Valve rod 5 upper ends that are placed in outside valve gap 4 are provided with Joystick 7; Be positioned on the valve rod 5 of valve gap 4 and be set with torque spring 8, the two ends of torque spring 8 are connected with valve gap 4 with valve rod 5 respectively; On the valve rod 5 near spool 6 positions, flip sleeve is equipped with positioning plate 9, and the outer circumferential face of positioning plate 9 is connected with control chamber 3 inner wall sealings by stainless steel elastic ring film 10; Be positioned at interval on the valve rod 5 of positioning plate 9 tops and be fixedly installed limiting board 11, offer uniformly at intervals multiple hemispheres location pit 13 at positioning plate 9 upper surfaces, be provided with uniformly at intervals multiple hemisphere positioning boss 14 corresponding with pit 13 positions, location at limiting board 11 lower surfaces, the height (locating the degree of depth of pit 13) of positioning boss 14 is 3 ~ 7mm, stop the supple of gas or steam under state, between the top of the positioning boss 14 arranging on limiting board 11 lower surfaces and positioning plate upper surface, maintain the gap of 1mm left and right.
When actual manufacture, location pit 13 also can be opened on limiting board 11, and at this moment positioning boss 14 is just arranged on positioning plate 9, also can play identical effect.
In the normal process of carrying of gas, Joystick 7 is rotated to suitable angle, valve rod 5 also rotates corresponding angle thereupon, thereby band movable valve plug 6 rotates and makes valve opening, the gas of carrying is exerted pressure to elastic ring film 10 in the process that flows through valve, by elastic ring film 10 jack-up, elastic ring film 10 drives positioning plate 9 certain distance that moves up, contact with limiting board 11, the positioning boss 14 of limiting board 11 lower surfaces snaps in the location pit 13 of positioning plate 9 upper surfaces, and valve is held open state; In the time dying suddenly in gas course of conveying, do not have gas to exert pressure to elastic ring film 10, elastic ring film 10 declines, thereby drive positioning plate 9 also to fall, positioning plate 9 separates with limiting board 11, at this moment torque spring 8 can pull valve rod 5 to be returned to initial position, and spool 6 also rotates and is returned to closed condition, valve closing with valve rod 5.
Along with the change of Joystick 7 rotation angles, valve rod 5 angle of swing also change thereupon, hemisphere positioning boss 14 on its limiting board 11 correspondingly snaps in hemisphere location pits 13 different on positioning plate 9, the angle of swing of hemisphere spool 6 is changed, change the circulation area of air-flow, thereby reached the object of adjusting gas flow.
Claims (7)
1. the self-closing valve for gas transfer pipeline, comprise the valve body of the T character form structure being formed by gas-entered passageway (1), outlet passageway (2) and control chamber (3), be provided with valve gap (4) in the top seal of described control chamber (3), valve rod (5) lower end extending into from described valve gap (4) center in control chamber (3) is fixedly connected with the spool (6) in outlet passageway (2) with being arranged on described gas-entered passageway (1), is placed in outer valve rod (5) upper end of described valve gap (4) and is provided with Joystick (7); It is characterized in that: be positioned on the valve rod (5) of described valve gap (4) and be set with torque spring (8), the two ends of described torque spring (8) are connected with valve gap (4) with valve rod (5) respectively; At the upper flip sleeve of the valve rod (5) near described spool (6) position, positioning plate (9) is housed, the outer circumferential face of described positioning plate (9) is connected with described control chamber (3) inner wall sealing by elastic ring film (10); The upper interval of valve rod (5) that is positioned at positioning plate (9) top is fixedly installed limiting board (11), offers respectively location pit and the positioning boss corresponding with its position on the opposing side of described positioning plate (9) and limiting board (11).
2. the self-closing valve for gas transfer pipeline according to claim 1, is characterized in that: the height of described positioning boss is 3 ~ 7mm.
3. the self-closing valve for gas transfer pipeline according to claim 1, is characterized in that: the stainless steel diaphragm that described elastic ring film (10) is thickness 0.02 ~ 0.3mm.
4. the self-closing valve for gas transfer pipeline according to claim 1, is characterized in that: described spool (6) is hemispherical dome structure.
5. the self-closing valve for gas transfer pipeline according to claim 1, is characterized in that: on the junction plane of described valve gap (4) and valve body, be provided with seal ring (12).
6. the self-closing valve for gas transfer pipeline according to claim 1, is characterized in that: described location pit and positioning boss be shaped as coadapted hemisphere.
7. the self-closing valve for gas transfer pipeline according to claim 1, it is characterized in that: described positioning plate (9) upper surface offers multiple location pits (13) uniformly at intervals, be provided with uniformly at intervals multiple positioning boss (14) at described limiting board (11) lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260436.XU CN203836310U (en) | 2014-05-21 | 2014-05-21 | Self-closed type valve used in gas conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260436.XU CN203836310U (en) | 2014-05-21 | 2014-05-21 | Self-closed type valve used in gas conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836310U true CN203836310U (en) | 2014-09-17 |
Family
ID=51514152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260436.XU Withdrawn - After Issue CN203836310U (en) | 2014-05-21 | 2014-05-21 | Self-closed type valve used in gas conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953767A (en) * | 2014-05-21 | 2014-07-30 | 河南工业大学 | Self-closed valve for gas transmission pipeline |
-
2014
- 2014-05-21 CN CN201420260436.XU patent/CN203836310U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953767A (en) * | 2014-05-21 | 2014-07-30 | 河南工业大学 | Self-closed valve for gas transmission pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |