CN104373615B - A kind of high leakproofness gate valve and operational approach thereof - Google Patents
A kind of high leakproofness gate valve and operational approach thereof Download PDFInfo
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- CN104373615B CN104373615B CN201410567972.9A CN201410567972A CN104373615B CN 104373615 B CN104373615 B CN 104373615B CN 201410567972 A CN201410567972 A CN 201410567972A CN 104373615 B CN104373615 B CN 104373615B
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- valve
- high leakproofness
- flange
- gland
- gate valve
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- 238000013459 approach Methods 0.000 title claims abstract description 11
- 210000004907 gland Anatomy 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims abstract description 4
- 239000010425 asbestos Substances 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 238000009954 braiding Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 241000233855 Orchidaceae Species 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 102000010970 Connexin Human genes 0.000 abstract description 2
- 108050001175 Connexin Proteins 0.000 abstract description 2
- 210000003976 gap junction Anatomy 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 229950000845 politef Drugs 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The invention discloses a kind of high leakproofness gate valve, including valve body, valve seat, valve rod, pad, valve gap, gland, pressing plate, locknut and handwheel, it is provided with valve below handwheel female, pressure mother is installed outside valve mother, outside pressure mother, is provided with oil nozzle, filler it is provided with in gland, filler uses spacer ring to be divided into two sections, and gland lower end and valve gap junction are provided with seal receptacle, are provided with rivet outside valve body upper flanges, the lower section of valve body inner valve stem is provided with flashboard, together with flashboard is welded and fixed with valve seat；The invention also discloses the operational approach of a kind of high leakproofness gate valve；Valve inner medium channel is straight-through, and medium is in line flowing, and flow resistance is little, and ram movement direction is all perpendicular with media flow direction, is not likely to produce water hammer, and body is simple, seals reliable, operates light and flexible, applied widely.
Description
Technical field
The invention belongs to technical field of valve manufacturing, relate to a kind of high leakproofness gate valve and operational approach thereof.
Background technology
Valve is control parts in pipeline fluid induction system, and it is used to change path section and media flow direction, have water conservancy diversion, end, throttle, non-return, the function such as shunting or overflow release.Producing and in the technical support of research and development at valve, state's inner valve falls behind unlike external valve, and the most a lot of products can compare favourably with international business in technology and innovation, and the development of domestic valve industry moves ahead toward the direction of high-end modern.
Along with the development of valve gate technology, constantly widening of valve applications field, corresponding valve standard is more and more indispensable；Valve industry product enters the period of an innovation, and not only product category needs to update, and enterprise internal management is also required to the standard in-depth reform according to industry；Accordingly, it would be desirable to while fully using existing standard, look forward to the future, work out and can apply to new standard in the future and new system, thus the development that propulsion valve technology is higher level.
Wherein, the opening and closing element of gate valve is flashboard, the direction of motion of flashboard is perpendicular with flow direction, and gate valve can only make standard-sized sheet and fully closed, and the general gate valve used on market for a long time generally also exists phenomenon of leaking or get rusty, and between sealing surface, easily cause erosion and scratch, keeping in repair relatively difficult, overall dimensions is relatively big, opens and needs certain space, opening/closing time is long, and structure is more complicated.
Summary of the invention
The technical problem to be solved is, the shortcoming overcoming prior art, it is provided that a kind of high leakproofness gate valve and operational approach thereof, valve inner medium channel is straight-through, medium is in line flowing, flow resistance is little, and ram movement direction is all perpendicular with media flow direction, is not likely to produce water hammer, body is simple, seal reliable, operate light and flexible, applied widely.
nullIn order to solve above technical problem，The present invention provides a kind of high leakproofness gate valve，Including valve body、Valve seat、Valve rod、Pad、Valve gap、Gland、Pressing plate、Locknut and handwheel，Valve seat it is provided with in valve body，Valve rod is installed on valve seat，And the upper end of valve body is connected by middle flange nut and middle flange bolt are fixing with valve gap，Valve body and valve cover chamber are provided with pad，It is positioned at valve rod lateral wall inside valve gap and is provided with gland，Valve gap upper end is provided with articulated pin，Gland is provided with pressing plate，It is fixing that pressing plate uses eyelet bolt and movable joint nut to be connected with valve gap upper end，By using locknut that handwheel is fixed on valve stem tip，Valve it is provided with female below handwheel，Pressure mother is installed outside valve mother，It is provided with oil nozzle outside pressure mother，Filler it is provided with in gland，Filler uses spacer ring to be divided into two sections，Gland lower end and valve gap junction are provided with seal receptacle，It is provided with rivet outside valve body upper flanges，The lower section of valve body inner valve stem is provided with flashboard，Together with flashboard is welded and fixed with valve seat；
Valve body both sides are imported and exported and are respectively equipped with flange, and the flange of both sides is respectively big convex flange and big female flange, and big convex flange is corresponding with big female flange, the convex neck height d1 of big convex flange is 7mm, there is car waterline end, and the recessed throat depth degree d2 of big female flange is 5mm, and end is without car waterline.
Two side flanges of product valve body of the present invention, the convex neck height d1 of big convex flange is 7mm, there is car waterline end, the recessed throat depth degree d2 of big female flange is 5mm, end is without car waterline, when carrying out Flange joint with pipeline, convex neck height is slightly larger than recessed throat depth degree, inside the convex neck of big convex flange, a middle hard gasket can be installed, then being connected with the recessed neck of pipeline, the recessed neck of big female flange is connected with the convex neck of pipeline, and installs a middle hard gasket inside the convex neck of pipeline, the bearing capacity of connecting portion can be improved, improve connection sealing and steadiness.
The technical scheme that the present invention limits further is:
Aforementioned pad is annular rubber tissue or copper sheet structure；Filler is politef or braiding asbestos；Rubber seal it is equipped with in seal receptacle.
Further,
Present invention also offers the operational approach of a kind of high leakproofness gate valve, comprise the following specific steps that:
A. high leakproofness gate valve is horizontally placed at and keeps fire away and shady and cool place, its feed liquor accent and go out sap cavity mouth and connect fluid pipeline respectively, check that all pipelines ensure sealing, and install its upstream additional at least one filter；
B. by high leakproofness gate valve feed liquor accent and go out to be respectively mounted Pressure gauge and U-tube manometer at sap cavity mouth, and check that Pressure gauge and U-tube manometer are the most intact and ensure that its range is accurate；
C. open high leakproofness gate valve and outlet valve, regulate liquid pressure value as required, wherein:
When needing to cut off feed flow, it is initially switched off supplying valve, is then shut off valve before and after high leakproofness gate valve, be rotated further by handwheel and tighten；
When needing to recover feed flow, first rotate handwheel and unscrew, the outlet valve of high leakproofness gate valve cuts out, more slowly opens outlet valve, feed flow can be recovered.
The invention has the beneficial effects as follows:
The present invention selects politef or braiding asbestos to use as filler, wherein, politef has fabulous chemical inertness and excellent lubricity, can overall suppress, shape (V-ring) can also be made by car, can also be as the lubricant of asbestos packing, overall V-ring spring force to be added makes it have minimum pretightning force to valve rod；And, braiding asbestos can make separation circle, and it can surround valve rod, maintenance it is easy to after valve is installed, and the highest temperature extremes of asbestos is close to 10000F, use the bonnet, of heat radiation can significantly reduce filler temperature, make it still can use when fluid temperature (F.T.) is higher than 10000F.
Valve inner medium channel is straight-through, and medium is in line flowing, and flow resistance is little, and ram movement direction is all perpendicular with media flow direction, is not likely to produce water hammer, and body is simple, seals reliable, operates light and flexible, applied widely.
Accompanying drawing explanation
Fig. 1 is the sectional view of the present invention；
Wherein, 1-valve body, 2-valve seat, 3-flashboard, 4-valve rod, 5-pad, 6-valve gap, 7-seal receptacle, 8-filler, 9-spacer ring, 10-filler, 11-gland, 12-pressing plate, 13-valve is female, and 14-presses mother, 15-locknut, 16-handwheel, 17-oil nozzle, 18-eyelet bolt, 19-movable joint nut, 20-articulated pin, flange nut in 21-, flange bolt in 22-, 23-rivet.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings:
nullThe present embodiment provides a kind of high leakproofness gate valve，Structure is as shown in Figure 1，Including valve body 1、Valve seat 2、Valve rod 4、Pad 5、Valve gap 6、Gland 11、Pressing plate 12、Locknut 15 and handwheel 16，Valve seat 2 it is provided with in valve body 1，Valve rod 4 is installed on valve seat 2，And the upper end of valve body 1 passes through middle flange nut 21 with valve gap 6 and middle flange bolt 22 is fixed and is connected，Pad 5 it is provided with between valve body 1 and valve gap 6，It is positioned at valve rod 4 lateral wall inside valve gap 6 and is provided with gland 11，Valve gap 6 upper end is provided with articulated pin 20，Gland 11 is provided with pressing plate 12，It is fixing that pressing plate 12 uses eyelet bolt 18 and movable joint nut 19 to be connected with valve gap 6 upper end，By using locknut 15 that handwheel 16 is fixed on valve rod 4 top，Valve mother 13 it is provided with below handwheel 16，Pressure female 14 is installed outside valve mother 13，It is provided with oil nozzle 17 outside pressure female 14，It is provided with filler in gland 11，Filler uses spacer ring 9 to be divided into two sections，Gland 11 lower end and valve gap 6 junction are provided with seal receptacle 7，It is provided with rivet 23 outside valve body 1 upper flanges，The lower section of valve body 1 inner valve stem 4 is provided with flashboard 3，Together with flashboard 3 is welded and fixed with valve seat 2；Valve body 1 both sides are imported and exported and are respectively equipped with flange, the flange of both sides is respectively big convex flange and big female flange, big convex flange is corresponding with big female flange, described valve body (1) both sides are imported and exported and are respectively equipped with flange, and the flange of described both sides is respectively big convex flange and big female flange, and described big convex flange is corresponding with big female flange, the convex neck height d1 of described big convex flange is 7mm, there is car waterline end, and the recessed throat depth degree d2 of described big female flange is 5mm, and end is without car waterline.
Aforementioned pad 5 is annular rubber tissue structure, and filler is politef；It is equipped with rubber seal in seal receptacle 7.
The present embodiment also provides for the operational approach of a kind of high leakproofness gate valve, comprises the following specific steps that:
A. high leakproofness gate valve is horizontally placed at and keeps fire away and shady and cool place, its feed liquor accent and go out sap cavity mouth and connect fluid pipeline respectively, check that all pipelines ensure sealing, and install its upstream additional at least one filter；
B. by high leakproofness gate valve feed liquor accent and go out to be respectively mounted Pressure gauge and U-tube manometer at sap cavity mouth, and check that Pressure gauge and U-tube manometer are the most intact and ensure that its range is accurate；
C. open high leakproofness gate valve and outlet valve, regulate liquid pressure value as required, wherein:
When needing to cut off feed flow, it is initially switched off supplying valve, is then shut off valve before and after high leakproofness gate valve, be rotated further by handwheel and tighten；
When needing to recover feed flow, first rotate handwheel and unscrew, the outlet valve of high leakproofness gate valve cuts out, more slowly opens outlet valve, feed flow can be recovered.
The present embodiment product due to during opening and closing between sealing surface frictional force little, relatively durable, Lift is little, easy to manufacture, easy to maintenance, is applicable not only to mesolow, and is applicable to high pressure；This product relies on valve thick stick pressure, makes valve clack sealing surface fit tightly with sealing surface of seat, stops medium circulation.
Above example is only the technological thought that the present invention is described, it is impossible to limiting protection scope of the present invention with this, every technological thought proposed according to the present invention, any change done on the basis of technical scheme, within each falling within scope.
Claims (4)
1. an operational approach for high leakproofness gate valve, described high leakproofness gate valve include valve body (1), valve seat (2), valve rod (4),
Pad (5), valve gap (6), gland (11), pressing plate (12), locknut (15) and handwheel (16), in described valve body (1)
It is provided with valve seat (2), described valve seat (2) is installed valve rod (4), and the upper end of described valve body (1) is passed through with valve gap (6)
Middle flange nut (21) and the fixing connection of middle flange bolt (22), be provided with pad (5) between described valve body (1) and valve gap (6),
Described valve gap (6) inner side is positioned at described valve rod (4) lateral wall and is provided with gland (11), and described valve gap (6) upper end is provided with work
Joint pin (20), described gland (11) is provided with pressing plate (12), and described pressing plate (12) uses with described valve gap (6) upper end
Eyelet bolt (18) and movable joint nut (19) connect fixing, by using locknut (15) to be fixed on by handwheel (16)
Described valve rod (4) top, it is characterised in that it is female (13) that described handwheel (16) lower section is provided with valve, described valve female (13) is outward
It is female (14) that pressure is installed in side, and described pressure female (14) outside is provided with oil nozzle (17), and described gland is provided with filler in (11), described
Filler uses spacer ring (9) to be divided into two sections, and described gland (11) lower end and valve gap (6) junction are provided with seal receptacle (7),
Being provided with rivet (23) outside described valve body (1) upper flanges, the lower section of described valve body (1) inner valve stem (4) is provided with flashboard (3)；
Described valve body (1) both sides are imported and exported and are respectively equipped with flange, and the flange of described both sides is respectively big convex flange and big concave surface method
Orchid, described big convex flange is corresponding with big female flange, and the convex neck height d1 of described big convex flange is 7mm, and there is car end
Waterline, the recessed throat depth degree d2 of described big female flange is 5mm, and end is without car waterline；
Comprise the following specific steps that:
A. high leakproofness gate valve is horizontally placed at and keeps fire away and shady and cool place, its feed liquor accent with go out sap cavity mouth and connect liquid line respectively
Road, checks that all pipelines ensure to seal, and installs its upstream additional at least one filter；
B. by high leakproofness gate valve feed liquor accent and go out to be respectively mounted Pressure gauge and U-tube manometer at sap cavity mouth, and Pressure gauge is checked
The most intact with U-tube manometer and ensure that its range is accurate；
C. open high leakproofness gate valve and outlet valve, regulate liquid pressure value as required, wherein:
When needing to cut off feed flow, it is initially switched off supplying valve, is then shut off valve before and after high leakproofness gate valve, be rotated further by handwheel and tighten；
When needing to recover feed flow, first rotate handwheel and unscrew, the outlet valve of high leakproofness gate valve cuts out, more slowly opens outlet valve,
Feed flow can be recovered.
The operational approach of high leakproofness gate valve the most according to claim 1, it is characterised in that described pad (5) is annular
Rubber tissue or copper sheet structure.
The operational approach of high leakproofness gate valve the most according to claim 1, it is characterised in that described filler is polytetrafluoroethyl-ne
Alkene or braiding asbestos.
The operational approach of high leakproofness gate valve the most according to claim 1, it is characterised in that described seal receptacle (7) internal ring
It is provided with rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567972.9A CN104373615B (en) | 2014-10-22 | A kind of high leakproofness gate valve and operational approach thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567972.9A CN104373615B (en) | 2014-10-22 | A kind of high leakproofness gate valve and operational approach thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373615A CN104373615A (en) | 2015-02-25 |
| CN104373615B true CN104373615B (en) | 2017-01-04 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6247679B1 (en) * | 1998-03-02 | 2001-06-19 | T&S Solutions, Inc. | Valve stem and method of manufacture; improved stem packing |
| CN202215768U (en) * | 2011-09-01 | 2012-05-09 | 江苏苏高流体机械有限公司 | Wedge gate valve |
| CN202349239U (en) * | 2011-11-17 | 2012-07-25 | 盐城思达德民力阀门有限公司 | Gate valve |
| CN203131075U (en) * | 2013-02-22 | 2013-08-14 | 江苏天泰电站阀门有限公司 | Double-sealing wedge gate valve with reinforcing gate plate |
| CN203131074U (en) * | 2013-02-22 | 2013-08-14 | 江苏天泰电站阀门有限公司 | Wedge gate valve |
| CN204226696U (en) * | 2014-10-22 | 2015-03-25 | 盐城奥克阀门有限公司 | A kind of high leak tightness gate valve |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6247679B1 (en) * | 1998-03-02 | 2001-06-19 | T&S Solutions, Inc. | Valve stem and method of manufacture; improved stem packing |
| CN202215768U (en) * | 2011-09-01 | 2012-05-09 | 江苏苏高流体机械有限公司 | Wedge gate valve |
| CN202349239U (en) * | 2011-11-17 | 2012-07-25 | 盐城思达德民力阀门有限公司 | Gate valve |
| CN203131075U (en) * | 2013-02-22 | 2013-08-14 | 江苏天泰电站阀门有限公司 | Double-sealing wedge gate valve with reinforcing gate plate |
| CN203131074U (en) * | 2013-02-22 | 2013-08-14 | 江苏天泰电站阀门有限公司 | Wedge gate valve |
| CN204226696U (en) * | 2014-10-22 | 2015-03-25 | 盐城奥克阀门有限公司 | A kind of high leak tightness gate valve |
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