CN208587514U - A kind of small-sized antiscour sampling valve of essence - Google Patents

A kind of small-sized antiscour sampling valve of essence Download PDF

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Publication number
CN208587514U
CN208587514U CN201821059797.2U CN201821059797U CN208587514U CN 208587514 U CN208587514 U CN 208587514U CN 201821059797 U CN201821059797 U CN 201821059797U CN 208587514 U CN208587514 U CN 208587514U
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China
Prior art keywords
valve
valve rod
rod
spool
essence
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Active
Application number
CN201821059797.2U
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Chinese (zh)
Inventor
汪新春
王军
李天保
杨硕
李新福
郭风忠
穆春阳
高阳
张耀辉
李碧
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WUZHONG ZHONGCHUANG VALVES CO Ltd
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WUZHONG ZHONGCHUANG VALVES CO Ltd
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Priority to CN201821059797.2U priority Critical patent/CN208587514U/en
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Publication of CN208587514U publication Critical patent/CN208587514U/en
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Abstract

The utility model relates to sampling valve equipment technical field, in particular to a kind of small-sized antiscour sampling valve of essence;It include: valve body, valve cup ring, valve rod, valve rod sealing member;Wherein, valve body is stop valve body, its spool region welding seat ring, and valve opening rod aperture, valve rod can be slidably mounted at valve rod hole by valve rod sealing member upwards, valve rod lower end is spool, valve core sealed cover is the conical surface, and heap is welded with hard alloy at valve core sealed cover, is provided with undergauge cylindrical body below valve core sealed cover, undergauge cylindrical hollow and outer surface are provided with multiple long slot holes, long slot hole upper end not with seal spool face contact;The utility model is designed by using whole hard alloy valve cup ring, integral type protection against erosion valve rod and clamping hoop type branch, so that valve mechanism essence is small, solves the problems, such as that big power plant's high temperature and pressure sampling valve volume, the easy erosive wear of sealing surface, service life are short.

Description

A kind of small-sized antiscour sampling valve of essence
Technical field:
The utility model relates to sampling valve equipment technical field, in particular to a kind of small-sized antiscour sampling valve of essence.
Background technique:
Sampling valve is the valve for obtaining medium samples in pipeline or equipment, for needing often to carry out medium samples The occasion of chemical analysis.Different occasions, the structure type of sampling valve also can be different.In steam power plant, to the vapour of high temperature and pressure Water sampling generallys use high-temperature high-pressure needle type valve as sampling valve.Needle valve is actually a kind of shut-off valve, generally existing at present Volume is big, the easy erosive wear of sealing surface, the disadvantages of service life is short.
Summary of the invention:
In consideration of it, it is necessary to design a kind of sealing surface to be not easy to be washed abrasion and be not easy the small size sampling valve to leak outside.
A kind of small-sized antiscour sampling valve of essence, comprising: valve body, valve cup ring, valve rod, valve rod sealing member;Wherein, valve body is to cut Only valve body, spool region welding seat ring, and valve opening rod aperture, valve rod can be slidably mounted at valve by valve rod sealing member upwards At rod aperture, valve rod lower end is spool, and valve core sealed cover is the conical surface, and heap is welded with hard alloy, valve core sealed cover at valve core sealed cover Lower section is provided with undergauge cylindrical body, and undergauge cylindrical hollow and outer surface are provided with multiple long slot holes, long slot hole upper end not with spool Seal face contact.
Valve cup ring is hard alloy seal ring, is welded on valve body inner spool area, and sealed working face is arc surface, the sealing Working face is in close contact when valve rod is in sliding stroke lower end with valve core sealed cover and sealed valve core access.
Under sealing state, valve rod is located at sliding stroke lower end, and valve core sealed cover and valve cup ring work face contact formation line are close Envelope, the circular shape of valve cup ring working face can guarantee that the sealing pair can still maintain linear sealing state under a small amount of abrasion, guarantee Sealing effect is not destroyed;When unlatching, valve rod is slided along valve rod hole, the linear sealing between valve core sealed cover and valve cup ring working face After failure, undergauge cylindrical body is still in spool, and flow velocity in the limitation valve of non-tight, prevents spool between valve seat ring inner surface Sealing pair is washed abrasion, and after valve core sealed cover moves up distance enough, spool inner gateway is opened by long slot hole, realizes opening for valve It opens.
Preferably, to prevent sampling valve from leaking under vibration, the design further include clamping hoop type bracket, handwheel, bearing, Stop pin;Wherein, clamping hoop type bracket embraces formula and is mounted on valve body top, and clamping hoop type bracket and valve body contact portion are provided with intermeshing Screw thread, handwheel may be rotatably mounted at clamping hoop type cradle top by bearing, and handwheel bottom is threadedly coupled with valve stem top, clip Anti-rotation groove is provided on formula bracket, stop pin is fixedly mounted on valve rod, and always in anti-in valve stem slides stroke range In turn trough, for valve rod with handwheel, clamping hoop type bracket without the relationship that is fixedly connected, the formula connection of embracing of clamping hoop type bracket and valve body is not easy pine It is dynamic, and have movement surplus between clamping hoop type bracket and valve rod, with this guarantee valve rod not the bracket caused by vibration loosen due to deviate into And it leaks.
Preferably, valve rod sealing member is made of Packing seat, packing ring, gland and hold-down grid, and Packing seat is mounted on In valve rod hole, gland is set, and hold-down grid is mounted on valve body outside gland by bolt, and is passed through on the outside of packing ring Packing ring is pressed on Packing seat by gland.
The utility model is designed by using whole hard alloy valve cup ring, integral type protection against erosion valve rod and clamping hoop type branch, So that valve mechanism essence is small, solving big power plant's high temperature and pressure sampling valve volume, the easy erosive wear of sealing surface, service life short is asked Topic.
Detailed description of the invention:
Attached drawing 1 is a kind of specific embodiment structural schematic diagram of small-sized antiscour sampling valve of essence;
Attached drawing 2 is a kind of specific embodiment valve rod partial structural diagram of small-sized antiscour sampling valve of essence.
In figure: valve body 1, valve cup ring 2, valve rod 3, valve core sealed cover 301, undergauge cylindrical body 302, Packing seat 4, packing ring 5, Gland 6, bolt 8, stop pin 9, clamping hoop type bracket 10, bearing 11, is threadedly coupled 12, handwheel 13 at hold-down grid 7.
Specific embodiment:
A kind of small-sized antiscour sampling valve of essence, comprising: valve body 1, valve cup ring 2, valve rod 3, valve rod sealing member, clamping hoop type bracket 10, handwheel 13, bearing 11, stop pin 9;Wherein, valve body 1 be stop valve body, spool region welding seat ring 2, and upwards Valve opening rod aperture, valve rod 3 can be slidably mounted at valve rod hole by valve rod sealing member, valve rod sealing member by Packing seat 4, packing ring 5, Gland 6 and hold-down grid 7 form, and Packing seat 4 is mounted in valve rod hole, and gland 6, filler are arranged on the outside of packing ring 5 Pressing plate 7 is mounted on valve body 1 outside gland 6 by bolt 8, and packing ring 5 is pressed on Packing seat 4 by gland 6 On;3 lower end of valve rod is spool, and valve core sealed cover 301 is the conical surface, and heap is welded with hard alloy, seal spool at valve core sealed cover 301 It is provided with undergauge cylindrical body 302 below face 301, undergauge cylindrical body 302 is hollow and outer surface is provided with multiple long slot holes, on long slot hole End is not contacted with valve core sealed cover 301.
Valve cup ring 2 is hard alloy seal ring, is welded on 1 inner spool area of valve body, and sealed working face is arc surface, this is close It seals working face and is in close contact simultaneously sealed valve core access with valve core sealed cover 301 when valve rod 3 is in sliding stroke lower end.
10 formula of embracing of clamping hoop type bracket is mounted on 1 top of valve body, and clamping hoop type bracket 10 is provided with 1 contact portion of valve body and mutually nibbles The screw thread of conjunction, handwheel 13 may be rotatably mounted at 10 top of clamping hoop type bracket, 13 bottom of handwheel and 3 top spiral shell of valve rod by bearing 11 Line connects 12, is provided with anti-rotation groove on clamping hoop type bracket 10, and stop pin 9 is fixedly mounted on valve rod 3, and slides and go in valve rod 3 Within the scope of journey always in anti-rotation groove.

Claims (3)

1. a kind of small-sized antiscour sampling valve of essence characterized by comprising valve body, valve cup ring, valve rod, valve rod sealing member;
Wherein, valve body is stop valve body, spool region welding seat ring, and valve opening rod aperture upwards, and it is close that valve rod passes through valve rod Sealing can be slidably mounted at valve rod hole, and valve rod lower end is spool, and valve core sealed cover is the conical surface, and heap is welded with firmly at valve core sealed cover Matter alloy, valve core sealed cover lower section are provided with undergauge cylindrical body, and undergauge cylindrical hollow and outer surface are provided with multiple long slot holes, long Slot upper end not with seal spool face contact;
Valve cup ring is hard alloy seal ring, is welded on valve body inner spool area, and sealed working face is arc surface, the seal operation Face is in close contact when valve rod is in sliding stroke lower end with valve core sealed cover and sealed valve core access.
2. a kind of small-sized antiscour sampling valve of essence as described in claim 1, which is characterized in that further include clamping hoop type bracket, hand Wheel, bearing, stop pin;Wherein, clamping hoop type bracket embraces formula and is mounted on valve body top, and clamping hoop type bracket is provided with valve body contact portion Intermeshing screw thread, handwheel may be rotatably mounted at clamping hoop type cradle top, handwheel bottom and valve stem top screw thread by bearing It connects, is provided with anti-rotation groove on clamping hoop type bracket, stop pin is fixedly mounted on valve rod, and is begun in valve stem slides stroke range Eventually in anti-rotation groove.
3. a kind of small-sized antiscour sampling valve of essence as described in claim 1, which is characterized in that the valve rod sealing member is by filler Pad, packing ring, gland and hold-down grid composition, Packing seat are mounted in valve rod hole, and gland is arranged on the outside of packing ring, Hold-down grid is mounted on valve body outside gland by bolt, and packing ring is pressed on Packing seat by gland.
CN201821059797.2U 2018-07-05 2018-07-05 A kind of small-sized antiscour sampling valve of essence Active CN208587514U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821059797.2U CN208587514U (en) 2018-07-05 2018-07-05 A kind of small-sized antiscour sampling valve of essence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821059797.2U CN208587514U (en) 2018-07-05 2018-07-05 A kind of small-sized antiscour sampling valve of essence

Publications (1)

Publication Number Publication Date
CN208587514U true CN208587514U (en) 2019-03-08

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Application Number Title Priority Date Filing Date
CN201821059797.2U Active CN208587514U (en) 2018-07-05 2018-07-05 A kind of small-sized antiscour sampling valve of essence

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CN (1) CN208587514U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111306306A (en) * 2020-03-12 2020-06-19 吴忠中创自控阀有限公司 Y-shaped stop valve with detachable movable valve seat
CN113154052A (en) * 2021-03-30 2021-07-23 哈电集团哈尔滨电站阀门有限公司 Novel stop valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111306306A (en) * 2020-03-12 2020-06-19 吴忠中创自控阀有限公司 Y-shaped stop valve with detachable movable valve seat
CN113154052A (en) * 2021-03-30 2021-07-23 哈电集团哈尔滨电站阀门有限公司 Novel stop valve

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