CN103398201A - High-temperature and high-pressure stop valve with Y-shaped threaded connection valve body - Google Patents

High-temperature and high-pressure stop valve with Y-shaped threaded connection valve body Download PDF

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Publication number
CN103398201A
CN103398201A CN2013103621061A CN201310362106A CN103398201A CN 103398201 A CN103398201 A CN 103398201A CN 2013103621061 A CN2013103621061 A CN 2013103621061A CN 201310362106 A CN201310362106 A CN 201310362106A CN 103398201 A CN103398201 A CN 103398201A
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CN
China
Prior art keywords
valve
temperature
filler
sealing
seat
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Application number
CN2013103621061A
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Chinese (zh)
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CN103398201B (en
Inventor
徐永明
胡永祥
郭玉林
赵怀忠
朱祥
韩健莉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nantong State Electric Power Valve Co., Ltd.
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NANTONG STATE ELECTRIC POWER VALVE CO Ltd
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Application filed by NANTONG STATE ELECTRIC POWER VALVE CO Ltd filed Critical NANTONG STATE ELECTRIC POWER VALVE CO Ltd
Priority to CN201310362106.1A priority Critical patent/CN103398201B/en
Publication of CN103398201A publication Critical patent/CN103398201A/en
Application granted granted Critical
Publication of CN103398201B publication Critical patent/CN103398201B/en
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Abstract

The invention relates to the field of stop valves, in particular to a high-temperature and high-pressure stop valve with a Y-shaped threaded connection valve body. The high-temperature and high-pressure stop valve a valve body, a valve seat, a valve clack, a valve rod, a valve cover, a sealing mechanism and a gear head, wherein the valve body is divided into an upper valve body and a lower valve body which are fixedly connected together through a bolt and a nut, and a sealing ring is mounted in the middle; and an inlet flow channel and an outlet flow channel of the high-temperature and high-pressure stop valve with the Y-shaped threaded connection valve body form an oblique line, and the flow channels and the valve rod direction form a Y shape. The high-temperature and high-pressure stop valve has the advantages that the problem that the sealing part is not easy to dismount and replace after damaged, so that the maintenance is convenient; the problems that hydraulic resistance is large and dregs are prone to be accumulated in the bent position of a high-temperature and high-pressure stop valve with a straight-through type Y-shaped threaded connection valve body are solved; and zero leakage of the valve sealing surface is achieved, anti-cavitation and anti-scouring capacities of the valve clack and the valve seat are improved, and further, the performance of the whole machine and the usability performance of the valve are improved.

Description

The Y shape valve body screw thread connects high temperature and high pressure cut-off valve
Technical field
The present invention relates to the stop valve field, be specifically related to a kind of Y shape valve body screw thread and connect high temperature and high pressure cut-off valve.
Background technique
Traditional stop valve body is whole.The combination of valve body and valve seat mainly contains two kinds of forms; The one, sealing surface of seat directly is welded in the valve seal position and processes.The 2nd, the sealing position that according to different media, after the selection of material is made valve seat, adopt swollen expansion, be threaded, the method such as pressing, welding is fixed on valve body.After the valve seat damage of these two kinds of forms, be difficult to remove the valve seat of repairing or more renewing.And traditional stop valve fluid resistance is large, the problem of the easy accumulated slag in bend place.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of Y shape valve body screw thread and connects high temperature and high pressure cut-off valve, rational in infrastructure, function admirable, handsome in appearance, applicable pressure range is wide, is mainly used to connect or block the medium in pipeline, have the advantages such as wear-resisting, high temperature resistant, antifraying property is good, long service life.
In order to achieve the above object, the present invention proposes following technological scheme:
the Y shape valve body screw thread connects high temperature and high pressure cut-off valve, it comprises valve body, valve seat, flap, valve rod, valve gap, sealing mechanism and gearhead, flap is loaded in the middle of valve body, valve seat is contained in below flap, the valve rod lower end connects the flap upper end, on flap, be pressed with valve clack cover, sealing mechanism is contained in the valve body upper end, valve gap is tightened on the valve body upper end, valve rod is from passing sealing mechanism, the valve rod upper end is contained in gearhead, the gearhead lower end is bolted, described valve body is divided into upper valve body and lower valve body, upper valve body is fixedly connected with together by screw bolt and nut with lower valve body, and seal ring is equipped with in centre, inlet channel and outlet flow that described Y shape valve body screw thread connects high temperature and high pressure cut-off valve are oblique lines, and runner and valve rod direction formation " Y " shape.The runner of valve body becomes an oblique line with sprue, the destructiveness of flowing state is less than conventional stop valve like this, thereby also corresponding little by the pressure loss of valve.
described sealing mechanism comprises filler chamber, seal ring, Packing seat, filler, Packing seat with holes, dunnage, split annulus, hold-down grid, gland and pretension plate, filler chamber is contained in the upper valve body upper end, between valve rod and upper valve body, seal ring is contained in above filler chamber, between filler chamber and valve body, Packing seat once is housed between filler chamber and valve rod from the bottom up, filler, Packing seat with holes and filler, gland is pressed on filler, hold-down grid is pressed on gland, and be fixedly connected on dunnage by double-screw bolt and nut, above valve gap, the filler chamber outside is designed with the pretension plate, pretension plate top is designed with dunnage, between dunnage and filler chamber upper end, be equipped with and split annulus.
Advantage of the present invention is that the Y shape valve body screw thread connects high temperature and high pressure cut-off valve and made up Sealing and damage the not problem of easy detachable, and is easy to maintenance; Solved straight-through type Y shape valve body screw thread connection high temperature and high pressure cut-off valve fluid resistance large, the problem of the easy accumulated slag in bend place; Solve valve sealing face zero seepage, improved the anti-cavitation of flap and valve seat and the ability of antiscour, improve overall performance and the use of valve.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure: lower valve body 1, flap 2, valve clack cover 3, valve rod 4, filler chamber 5, seal ring 6, valve gap 7, Packing seat 8, filler 9, Packing seat 10 with holes, dunnage 11, split annulus 12, double-screw bolt 13, nut 14, bolt 15, gearhead 16, hold-down grid 17, gland 18, pretension plate 19, upper valve body 20, bolt 21, nut 22, seal ring 23, valve seat 24.
Embodiment
For the present invention is further described, below in conjunction with Figure of description, introduce:
with reference to accompanying drawing 1, the Y shape valve body screw thread connects high temperature and high pressure cut-off valve, it comprises valve body, valve seat 24, flap 2, valve rod 4, valve gap 7, sealing mechanism and gearhead 16, flap 2 is loaded in the middle of valve body, valve seat 24 is contained in below flap 2, valve rod 4 lower ends connect flap 2 upper ends, on flap 2, be pressed with valve clack cover 7, sealing mechanism is contained in the valve body upper end, valve gap 7 is tightened on the valve body upper end, valve rod 4 is from passing sealing mechanism, valve rod 4 upper ends are contained in gearhead 16, gearhead 16 lower ends are fixing by bolt 15, described valve body is divided into upper valve body 20 and lower valve body 1, upper valve body 20 is fixedly connected with together with nut 22 by bolt 21 with lower valve body 1, and seal ring 23 is equipped with in centre, inlet channel and outlet flow that described Y shape valve body screw thread connects high temperature and high pressure cut-off valve are oblique lines, and runner and valve rod 4 directions formation " Y " shapes.
described sealing mechanism comprises filler chamber 5, seal ring 6, Packing seat 8, filler 9, Packing seat 10 with holes, dunnage 11, split annulus 12, hold-down grid 17, gland 18 and pretension plate 19, filler chamber 5 is contained in upper valve body 20 upper ends, between valve rod 4 and upper valve body 20, seal ring 6 is contained in above filler chamber 5, between filler chamber 5 and upper valve body 20, Packing seat 8 once is housed between filler chamber 5 and valve rod 4 from the bottom up, filler 9, Packing seat 10 with holes and filler 9, gland 18 is pressed on filler 9, hold-down grid 17 is pressed on gland 18, and be fixedly connected on dunnage 11 by double-screw bolt 13 and nut 14, above valve gap 7, filler chamber 8 outsides are designed with pretension plate 19, pretension plate 19 tops are designed with dunnage 11, between dunnage 11 and filler chamber 8 upper ends, be equipped with and split annulus 12.

Claims (2)

1.Y the shape valve body screw thread connects high temperature and high pressure cut-off valve, it comprises valve body, valve seat, flap, valve rod, valve gap, sealing mechanism and gearhead, flap is loaded in the middle of valve body, valve seat is contained in below flap, the valve rod lower end connects the flap upper end, on flap, be pressed with valve clack cover, sealing mechanism is contained in the valve body upper end, valve gap is tightened on the valve body upper end, valve rod is from passing sealing mechanism, the valve rod upper end is contained in gearhead, the gearhead lower end is bolted, it is characterized in that described valve body is divided into upper valve body and lower valve body, upper valve body is fixedly connected with together by screw bolt and nut with lower valve body, and seal ring is equipped with in centre, inlet channel and outlet flow that described Y shape valve body screw thread connects high temperature and high pressure cut-off valve are oblique lines, and runner and valve rod direction formation " Y " shape.
2. Y shape valve body screw thread according to claim 1 connects high temperature and high pressure cut-off valve, it is characterized in that described sealing mechanism comprises filler chamber, seal ring, Packing seat, filler, Packing seat with holes, dunnage, split annulus, hold-down grid, gland and pretension plate, filler chamber is contained in the upper valve body upper end, between valve rod and upper valve body, seal ring is contained in above filler chamber, between filler chamber and valve body, Packing seat once is housed between filler chamber and valve rod from the bottom up, filler, Packing seat with holes and filler, gland is pressed on filler, hold-down grid is pressed on gland, and be fixedly connected on dunnage by double-screw bolt and nut, above valve gap, the filler chamber outside is designed with the pretension plate, pretension plate top is designed with dunnage, between dunnage and filler chamber upper end, be equipped with and split annulus.
CN201310362106.1A 2013-08-20 2013-08-20 Y shape valve body screw thread connects high temperature and high pressure cut-off valve Active CN103398201B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310362106.1A CN103398201B (en) 2013-08-20 2013-08-20 Y shape valve body screw thread connects high temperature and high pressure cut-off valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310362106.1A CN103398201B (en) 2013-08-20 2013-08-20 Y shape valve body screw thread connects high temperature and high pressure cut-off valve

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CN103398201A true CN103398201A (en) 2013-11-20
CN103398201B CN103398201B (en) 2016-08-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110985715A (en) * 2019-12-11 2020-04-10 南通国电阀门科技有限公司 Y-shaped two-body ball sealing check valve for nuclear power island core
CN111006024A (en) * 2019-12-11 2020-04-14 南通国电阀门科技有限公司 High-pressure Y-shaped double-acting isolation valve for nuclear power

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193974A (en) * 1982-05-07 1983-11-11 Hitachi Ltd Steam stop valve having centering function
CN201031952Y (en) * 2007-03-08 2008-03-05 南通高中压阀门有限公司 Gear operation Y-type cut-off valve
CN201715068U (en) * 2009-12-14 2011-01-19 兰州高压阀门有限公司 High-temperature and high-pressure Y-shaped stop valve
CN201884675U (en) * 2010-12-24 2011-06-29 中核苏阀科技实业股份有限公司 Y-shaped cut-off valve
CN202327149U (en) * 2011-11-17 2012-07-11 盐城思达德民力阀门有限公司 Self-sealing stop valve
CN203023503U (en) * 2012-12-08 2013-06-26 河南盛誉实业有限公司 Corrosion-resisting slurry valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193974A (en) * 1982-05-07 1983-11-11 Hitachi Ltd Steam stop valve having centering function
CN201031952Y (en) * 2007-03-08 2008-03-05 南通高中压阀门有限公司 Gear operation Y-type cut-off valve
CN201715068U (en) * 2009-12-14 2011-01-19 兰州高压阀门有限公司 High-temperature and high-pressure Y-shaped stop valve
CN201884675U (en) * 2010-12-24 2011-06-29 中核苏阀科技实业股份有限公司 Y-shaped cut-off valve
CN202327149U (en) * 2011-11-17 2012-07-11 盐城思达德民力阀门有限公司 Self-sealing stop valve
CN203023503U (en) * 2012-12-08 2013-06-26 河南盛誉实业有限公司 Corrosion-resisting slurry valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110985715A (en) * 2019-12-11 2020-04-10 南通国电阀门科技有限公司 Y-shaped two-body ball sealing check valve for nuclear power island core
CN111006024A (en) * 2019-12-11 2020-04-14 南通国电阀门科技有限公司 High-pressure Y-shaped double-acting isolation valve for nuclear power

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Address after: 226557, Taoyuan West Road, Chengnan street, Rugao City, Jiangsu, Nantong province 1

Patentee after: Nantong State Electric Power Valve Co., Ltd.

Address before: 226557, Taoyuan West Road, Taoyuan Town, Nantong City, Jiangsu, Rugao 1

Patentee before: Nantong State Electric Power Valve Co., Ltd.