CN204756049U - Take linear sealing safety shut -off valve of direction formula - Google Patents
Take linear sealing safety shut -off valve of direction formula Download PDFInfo
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- CN204756049U CN204756049U CN201520547166.5U CN201520547166U CN204756049U CN 204756049 U CN204756049 U CN 204756049U CN 201520547166 U CN201520547166 U CN 201520547166U CN 204756049 U CN204756049 U CN 204756049U
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Abstract
The utility model belongs to the technical field of the gas safety valve and specifically relates to a take linear sealing safety shut -off valve of direction formula. The utility model aims to solve the technical problem that a realization direction that can be more accurate is sealed is provided, and can be effectual reduction rubber spare damage, can improve the take linear sealing safety shut -off valve of direction formula of closed position's uniformity simultaneously. The utility model provides a technical scheme that its technical problem adopted is: take linear sealing safety shut -off valve of direction formula, including the valve body, be provided with valve rod, valve port in the valve body and go up the valve bonnet, upward cup jointed the valve clack body in the valve bonnet, the valve clack body is connected with the valve rod through elastic connection mechanism, goes up to be provided with on the valve bonnet internal face to be used for guiding the valve clack body to the guiding mechanism of valve port motion, and the outer fringe of the valve clack bottom the valve clack is personally experienced sth. Part of the body is provided with the sealing washer, the valve clack seals between through sealing washer and valve port. The utility model discloses the gas safety valve application that is particularly useful for high -quality demand.
Description
Technical field
The utility model relates to safety valves for gas field, especially a kind of linear sealing safety cut-off valve of tape guide formula.
Background technique
Gas safety cut-off valve is used for gas transmission and distribution system, and when the line pressure that cut-off valve controls is higher or lower than cut-out setting pressure, safety cut-off valve can emergency cut-off pipeline air-flow, protection upstream device.In the process cut off, because the great pressure reduction of rapidity and front and back of time can bring the problem of two aspects: one, close fast and need to lead accurately and locate, if flap is failed accurate location and each position closed can be caused different and occur leakage in the process of movement; Two, due to active force and the great front and back pressure reduction of spring, the power acted on valve port can be very large, and the sharpness of valve port can damage sealing gasket, causes service life reduction.
Model utility content
Technical problem to be solved in the utility model is to provide one can realize pilot seal more accurately, and can effectively reduce rubber parts damage, can improve the linear sealing safety cut-off valve of the conforming tape guide formula of closed position simultaneously.
The utility model solves the technological scheme that its technical problem adopts: the linear sealing safety cut-off valve of tape guide formula, comprise valve body, valve rod, valve port and upper valve bonnet is provided with in described valve body, valve petal body is socketed with in upper valve bonnet, described valve petal body is connected with valve rod by flexible connection mechanism, upper valve bonnet internal face is provided with the guide mechanism for guiding valve petal body to move to valve port, the outer rim of the flap bottom valve petal body is provided with seal ring, and described flap is by sealing between seal ring and valve port.
Further, described guide mechanism is be socketed the guide ring be arranged on valve bonnet internal face.
Further, described guide ring is at least two, and is all socketed on valve bonnet internal face.
Further, described flexible connection mechanism is spring.
Further, described flap is fixed on valve petal body by set screw.
Further, the edge of described valve port is provided with chamfering, is taper-face contact between the edge of described valve port and seal ring.
The beneficial effects of the utility model are: seal form of the present utility model is the linear sealing of O type circle, break the idea that original valve port and valve port pad seal, change to the linear sealing of O type cast formula, effectively raise the intensity of sealing, avoid the injury of valve port cutting edge to rubber parts simultaneously; Next, compared with traditional structure, the utility model eliminates the cutting edge position of valve port, solves the difficulty of part processing, cuts down finished cost.Reduce the part injury in transport, installation, using process; Last, the utility model achieves and leads accurately to flap, makes sealing surface each all with same position sealing, effectively reduces the damage of rubber parts, improve the conformity of closed position.The utility model is particularly useful for the safety valves for gas application of quality requirements.
Accompanying drawing explanation
Structural representation when Fig. 1 is the utility model unlatching.
Structural representation when Fig. 2 is the utility model closedown.
Be labeled as in figure: valve port 1, seal ring 2, flap 3, set screw 4, valve petal body 5, upper valve bonnet 6, guide mechanism 7, flexible connection mechanism 8, valve rod 9, valve body 10.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
The linear sealing safety cut-off valve of tape guide formula as shown in Figure 1 and Figure 2, comprise valve body 10, valve rod 9, valve port 1 and upper valve bonnet 6 is provided with in described valve body 10, valve petal body 5 is socketed with in upper valve bonnet 6, described valve petal body 5 is connected with valve rod 9 by flexible connection mechanism 8, upper valve bonnet 6 internal face is provided with the guide mechanism 7 for guiding valve petal body 5 to move to valve port 1, the outer rim of the flap 3 bottom valve petal body 5 is provided with seal ring 2, and described flap 3 is by sealing between seal ring 2 and valve port 1.
General, in order to simplified structure, described guide mechanism 7 can be chosen as the guide ring being socketed and being arranged on upper valve bonnet 6 internal face.As depicted in figs. 1 and 2, further, in order to ensure the quality led, two can be at least by selective guide ring, and all be socketed on valve bonnet 6 internal face.In addition, flexible connection mechanism 8 also can be chosen as spring, not only can well ensure movement effects, also can greatly reduce cost of production of the present utility model.For flap 3, for the ease of the maintenance in later stage, can select by set screw 4 and be fixed on valve petal body 5.Certainly, the edge of valve port 1 can also be provided with chamfering, be taper-face contact between the edge of described valve port 1 and seal ring 2.
The utility model is when practical application, such step: sensor detects that line pressure is higher or lower than after cut-out setting pressure, namely can touch secondary tripping mechanism to thread off, cause the power acted on valve rod 9 to disappear, the thrust that valve petal body 5 is subject to closing spring 8 moves downward.Guide ring leads to valve petal body 5, and impel valve petal body 5 to move down by fixation locus, after flap 3 contacts with valve port 1, part is limited, stops moving down.Now seal ring 2 contacts with valve port 1 and obtains fixing decrement, cuts off gas.Guide ring is embedded in valve bonnet 6, and the gap between upper valve bonnet 6 and valve petal body 5 is enough large, there will not be the friction between steel and steel and destroys the surface of part.Guide ring then with valve petal body 5 drive fit, reach leading role accurately.Because guide ring is teflon material, there is ductility and lubricity, in the process of motion, there will not be part of damage surface and stuck phenomenon.Guide ring is solid-state, carries lubrication, does not need to add oiling, oiling agent etc.Guide ring is divided into upper and lower two-part, accurately locates the movement locus of valve petal body 5.The selflubricating of guide ring solves steel on conventional construction and coordinates a large amount of problems produced with steel, greatly reduces the rate of fault of cut-off valve, also reduces maintenance cost etc.When cut-off valve cuts off, under spring 8 acts on, making valve petal body 5 and flap 3 press valve port 1, O type circle 2 is rubber parts, after the certain decrement of acquisition, can cut off the gas at the upper and lower two ends of valve port.
In addition, the utility model is the creationary taper-face contact form that have employed 90 degree also, adds flap 3, area of contact between valve petal body 5 and valve port 1 greatly, as shown in Figure 2, can reduce in unit area stressed, protection part in the moment of cutting off.Conical surface seal is a kind of sealing means more advanced than plane sealing especially, when gas pressure is higher, the power that flap 3 acts on valve port 1 will be larger, and now flap 3 has and plants to the close trend of valve port 1, because the conical surface is less more inside, so O type circle also can more be adjacent to valve port 1.Remove the structure of traditional valve port 1 being processed cutting edge, part processing on save time, cost.Cutting edge is the part being very easy to damage, and can increase part working life after removal.
General, guide ring is preferably O type circle, due to the better tightness of O type circle, rubber parts can reach sealing effect after the certain compression of acquisition, and rubber be compressed with certain size restrictions, decrement conference infringement rubber parts, too small decrement can not play again the effect of sealing.Because flap 3 and valve port 1 are all steel parts, extrusion deformation degree can be ignored, and the contact of two parts forms location, and control the decrement of O type circle accurately, decrement can not change because of the height of pressure or other factors.If adopt the mode of valve port 1 and valve port pad, the decrement of rubber parts can change because of the change of pressure and the difference of accessory size.Conventional sealing method can reduce the working life of valve port pad along with the rising of gas pressure, and the rubber under O type circle seal form, after decrement is fixing, can not raises along with pressure and change.On the contrary, under this configuration, pressure is higher, and the power acted on valve petal body 5 is larger, the more difficult unlatching of flap, and sealing effect can be better.
Claims (6)
1. the linear sealing safety cut-off valve of tape guide formula, comprise valve body (10), valve rod (9) is provided with in described valve body (10), valve port (1) and upper valve bonnet (6), it is characterized in that: in upper valve bonnet (6), be socketed with valve petal body (5), described valve petal body (5) is connected with valve rod (9) by flexible connection mechanism (8), upper valve bonnet (6) internal face is provided with the guide mechanism (7) for guiding valve petal body (5) to move to valve port (1), the outer rim of the flap (3) of valve petal body (5) bottom is provided with seal ring (2), described flap (3) is by sealing between seal ring (2) and valve port (1).
2. the linear sealing safety cut-off valve of tape guide formula as claimed in claim 1, is characterized in that: described guide mechanism (7) is the guide ring on socket is arranged at upper valve bonnet (6) internal face.
3. the linear sealing safety cut-off valve of tape guide formula as claimed in claim 2, is characterized in that: described guide ring is at least two, and is all socketed on valve bonnet (6) internal face.
4. the linear sealing safety cut-off valve of tape guide formula as claimed in claim 1, is characterized in that: described flexible connection mechanism (8) is spring.
5. the linear sealing safety cut-off valve of tape guide formula as claimed in claim 1, is characterized in that: described flap (3) is fixed on valve petal body (5) by set screw (4).
6. the linear sealing safety cut-off valve of the tape guide formula as described in claim 1,2,3 or 4, it is characterized in that: the edge of described valve port (1) is provided with chamfering, is taper-face contact between the edge of described valve port (1) and seal ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547166.5U CN204756049U (en) | 2015-07-27 | 2015-07-27 | Take linear sealing safety shut -off valve of direction formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547166.5U CN204756049U (en) | 2015-07-27 | 2015-07-27 | Take linear sealing safety shut -off valve of direction formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204756049U true CN204756049U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520547166.5U Active CN204756049U (en) | 2015-07-27 | 2015-07-27 | Take linear sealing safety shut -off valve of direction formula |
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| Country | Link |
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| CN (1) | CN204756049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112823255A (en) * | 2018-10-10 | 2021-05-18 | 艾默生过程管理调节技术公司 | Emergency shutdown safety assembly for providing redundant safety shutdown |
-
2015
- 2015-07-27 CN CN201520547166.5U patent/CN204756049U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112823255A (en) * | 2018-10-10 | 2021-05-18 | 艾默生过程管理调节技术公司 | Emergency shutdown safety assembly for providing redundant safety shutdown |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 610091 Qingyang District, Chengdu City, Sichuan Province, 33 and 38 high-tech zones B of Jiaolong Industrial Port Qingyang Park Patentee after: Ruixing Jiuyu Gas Equipment (Chengdu) Co., Ltd. Address before: 610091 Qingyang District, Chengdu City, Sichuan Province, 33 high-tech zones B of Jiaolong Industrial Port Qingyang Park Patentee before: CHENGDU JIUYU GAS EQUIPMENT CO., LTD. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No.388, Industrial Avenue, Shaqu Town, Dayi County, Chengdu City, Sichuan Province Patentee after: RUIXING JOYU GAS EQUIPMENT (CHENGDU) Co.,Ltd. Address before: 610091 Qingyang District, Chengdu City, Sichuan Province, 33 and 38 high-tech zones B of Jiaolong Industrial Port Qingyang Park Patentee before: RUIXING JOYU GAS EQUIPMENT (CHENGDU) Co.,Ltd. |