CN206419493U - A kind of Double sealing globe valve - Google Patents

A kind of Double sealing globe valve Download PDF

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Publication number
CN206419493U
CN206419493U CN201621141506.5U CN201621141506U CN206419493U CN 206419493 U CN206419493 U CN 206419493U CN 201621141506 U CN201621141506 U CN 201621141506U CN 206419493 U CN206419493 U CN 206419493U
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CN
China
Prior art keywords
valve
sealing
flap
bonnet
seal
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Application number
CN201621141506.5U
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Chinese (zh)
Inventor
柳温柔
樊彦军
付瑞平
杨水平
王陈
柳亲亲
蔡承福
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Zhejiang Tiante Valve Co Ltd
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Zhejiang Tiante Valve Co Ltd
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Priority to CN201621141506.5U priority Critical patent/CN206419493U/en
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Publication of CN206419493U publication Critical patent/CN206419493U/en
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Abstract

The utility model discloses a kind of Double sealing globe valve, including flap and valve body, flap sealing passes through hard sealing ring and soft seal circle fitted seal.The invention also discloses a kind of Double sealing globe valve, including flap and valve body, flap sealing passes through sealing ring pressure ring and composite sealing ring fitted seal.The sealing of flap can pass through two kinds of forms:First, sealed using soft or hard two-stage, hard sealing ring is used as sealing surface using the metal materials such as stainless steel, hard alloy, soft seal circle using soft materials such as PTFE, NYLON, rubber;2nd, directly zero leakage of sealing surface ensure that by the combined use of soft and hard seal, be particularly suitable for use in the stronger occasion of the permeability such as gas medium, substantially increase conduit running security using the composite sealing ring made by stainless steel plate and flexible graphite plate.

Description

A kind of Double sealing globe valve
Technical field
The utility model is related to a kind of stop valve, specifically a kind of Double sealing globe valve.
Background technology
Stop valve is also known as pipe valve valve, belongs to forced seal formula valve, so when valve is closed, it is necessary to applies to flap and presses Power, is not leaked with forced seal face.When medium enters valve below flap, the resistance overcome required for operating physical force, is valve The frictional force of bar and filler with as the thrust produced by the pressure of medium, the power of closing valve is bigger than the power of valve opening door, so valve rod Diameter it is big, otherwise can occur the failure of valve rod bending.It is divided into three kinds by connected mode:Flange connection, screwed connection, welding Connection.After the valve of self sealss occurs, the medium flow direction of stop valve just changes enters valve pocket above flap, at this moment in medium pressure Under power effect, the power of closing valve is small, and the power of valve opening door is big, and the diameter of valve rod can be reduced correspondingly.Meanwhile, in medium effect Under, the valve of this form is also tighter.When stop valve is opened, the Lift of flap is the 25%~30% of nominal diameter When, flow has reached maximum, represents that valve reaches fully open position.So the fully open position of stop valve, should by the stroke of flap Lai Determine.Existing stop valve is poor in the applicability of the stronger occasion of the permeability such as gas medium, leverages pipeline fortune Row security.
Utility model content
The purpose of this utility model is to provide a kind of Double sealing globe valve, to solve what is proposed in above-mentioned background technology Problem.
To achieve the above object, the utility model provides following technical scheme:
A kind of Double sealing globe valve, including flap and valve body, flap sealing pass through hard sealing ring and soft seal circle Fitted seal.Soft seal circle is made of PTFE, NYLON or elastomeric material;Hard sealing ring is closed using stainless steel or hard Golden material is made.
Another technical scheme that the utility model is provided, a kind of Double sealing globe valve, including flap and valve body, flap Sealing passes through sealing ring pressure ring and composite sealing ring fitted seal.The composite sealing ring includes layer flexible graphite cake and multilayer Stainless steel plate, and flexible graphite plate and stainless steel plate be intervally arranged.
As the improvement of above-mentioned technical proposal, the sealing surface of the valve body and sealing ring uses conical seal (contact) face.
Compared with prior art, the beneficial effects of the utility model are:
The Double sealing globe valve is reasonable in design, and compact conformation is simple, and manufacturing process is simple, and the sealing of flap can pass through two The form of kind:First, sealed using soft or hard two-stage, hard sealing ring is using metal materials, soft seal circle such as stainless steel, hard alloy Sealing surface is used as using soft materials such as PTFE, NYLON, rubber;2nd, directly use and made by stainless steel plate and flexible graphite plate Composite sealing ring, zero leakage of sealing surface ensure that by the combined use of soft and hard seal, gas medium etc. is particularly suitable for use in The stronger occasion of permeability, substantially increases conduit running security;The Double sealing globe valve also has good airproof performance, made With long lifespan, small volume, the advantage that lightweight, material consumption is few, installation dimension is small, fast opening and closing can be achieved, it is easy to use, Improve operating efficiency.
Brief description of the drawings
Fig. 1 is the overall structure diagram of Double sealing globe valve.
Fig. 2 is the partial structurtes enlarged drawing of the embodiment one of Double sealing globe valve.
Fig. 3 is the partial structurtes enlarged drawing of the embodiment two of Double sealing globe valve.
Wherein:1- valve bodies;2A- hard sealing rings;2B- sealing ring pressure rings;3- trip bolts;4A- soft seal circles;4B- Composite sealing ring;5- flaps;6- valve rods;7- flap glands;8- sealing rings;9- gasket seals;10- bonnets;11- studs;12- six Angle screw;13- fillers;14- filler pressing sleeves;15- hold-down grids;16- bearing pins;17- lifting bolts;The hex nuts of 18- first; 19- valve stem nuts;20- holding screws;21- handwheels;22- plain washers;The hex nuts of 23- second;24- flexible graphite plates;25- is not Become rusty steel plate, 26- conical seal (contact) faces.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Embodiment one
Fig. 1-2, a kind of Double sealing globe valve, including flap 5 and valve body 1 are referred to, the sealing of flap 5 is sealed by hard Enclose 2A and soft seal circle 4A fitted seals.The sealing surface of the valve body 1 uses conical seal (contact) face 26, so reduces operating physical force.
Fixed between flap 5 and valve body 1 by trip bolt 3, in the groove inside the lower end of valve rod 6 insertion flap 5, and valve Valve 5 is fastened with valve rod 6 by flap gland 7;The upper end of valve body 1 passes through multiple studs 11 and multiple hex screws 12 and bonnet 10 are fixedly connected, and the junction of the valve body 1 and bonnet 10 is also equipped with gasket seal 9, and valve rod 6 passes through bonnet 10, and valve rod 6 Upper seal support 8 is installed between bonnet 10, the upper end of upper seal support 8 is filler 13, and the upper end of filler 13 is provided with filler pressing sleeve 14, The upper end of filler pressing sleeve 14 is connected to hold-down grid 15, and hold-down grid 15 passes through two bearing pins 16, two lifting bolts 17 and two The cooperation of first hex nut 18 is connected with bonnet 10, and the upper end of bonnet 10 is provided with valve stem nut 19, and valve stem nut 19 is by tight Determine screw 20 to be fixedly connected with bonnet 10, valve rod 6 passes through valve stem nut 19, the top of valve rod 6 is provided with handwheel 21, the upper end of handwheel 21 It is provided between the second hex nut 23, the hex nut 23 of handwheel 21 and second and plain washer 22 is installed.Preferably, described hard Matter sealing ring 2A is made of metal material;Preferably, soft seal circle 4A is made of PTFE, NYLON or elastomeric material; Preferably, the hard sealing ring 2A is made of stainless steel or Hardmetal materials.
Embodiment two
Fig. 1 and Fig. 3, a kind of Double sealing globe valve, including flap 5 and valve body 1 are referred to, the sealing of flap 5 passes through sealing Enclose pressure ring 2B and composite sealing ring 4B fitted seals.The sealing surface of the valve body 1 uses conical seal (contact) face A.
In groove inside the lower end of valve rod 6 insertion flap 5, and flap 5 is fastened with valve rod 6 by flap gland 7;The valve The upper end of body 1 is fixedly connected by multiple studs 11 and multiple hex screws 12 with bonnet 10, the company of the valve body 1 and bonnet 10 The place of connecing is also equipped with gasket seal 9, and valve rod 6 is upper close through upper seal support 8 is provided between bonnet 10, and valve rod 6 and bonnet 10 It is filler 13 to seal the upper end of seat 8, and the upper end of filler 13 is provided with filler pressing sleeve 14, and the upper end of filler pressing sleeve 14 is connected to hold-down grid 15, Hold-down grid 15 is connected by the cooperation and bonnet 10 of two bearing pins 16, two lifting bolts 17 and two the first hex nuts 18 Connect, the upper end of bonnet 10 is provided with valve stem nut 19, valve stem nut 19 is fixedly connected by holding screw 20 with bonnet 10, valve rod 6 Through valve stem nut 19, the top of valve rod 6 is provided with handwheel 21, and the upper end of handwheel 21 is provided with the second hex nut 23, handwheel 21 with Plain washer 22 is installed between second hex nut 23.Preferably, the composite sealing ring 4B includes layer flexible graphite cake 24 and multilayer stainless steel plate 25, and flexible graphite plate 24 and stainless steel plate 25 be intervally arranged.
Operation principle of the present utility model is:The sealing of flap 5 can pass through two kinds of forms:First, sealed using soft or hard two-stage, Hard sealing ring 2A is using metal materials such as stainless steel, hard alloy, and soft seal circle 4A is soft using PTFE, NYLON, rubber etc. Material is used as sealing surface;2nd, directly passed through using the composite sealing ring 4B made by stainless steel plate 25 and flexible graphite plate 24 The combined use of soft and hard seal ensure that zero leakage of sealing surface, be particularly suitable for use in the stronger field of the permeability such as gas medium Close, substantially increase conduit running security;Fast opening and closing can be achieved (opening and closing time is the 1/4 of gate valve);The dual-seal is cut Only valve is reasonable in design, and compact conformation is simple, and manufacturing process is simple, passes through the combined use of two kinds of sealing devices, it is ensured that sealing Zero leakage in face, is particularly suitable for use in the stronger occasion of the permeability such as gas medium, substantially increases conduit running security;Should Double sealing globe valve also has that good airproof performance, service life length, small volume, lightweight, material consumption be few, installation dimension is small Advantage, can be achieved fast opening and closing, easy to use, improve operating efficiency.
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party , can also be on the premise of this patent objective not be departed from formula, the knowledge that one skilled in the relevant art possesses Various changes can be made.

Claims (2)

1. a kind of Double sealing globe valve, it is characterised in that including flap (5) and valve body (1), flap (5) sealing passes through hard Sealing ring (2A) and soft seal circle (4A) fitted seal;The soft seal circle (4A) uses PTFE, NYLON or elastomeric material It is made;Hard sealing ring (2A) is made of stainless steel or Hardmetal materials;The valve body (1) and hard sealing ring (2A) Sealing surface uses conical seal (contact) face (26).
2. a kind of Double sealing globe valve according to claim 1, it is characterised in that valve rod (6) lower end insertion flap (5) In internal groove, and flap (5) is fastened with valve rod (6) by flap gland (7);Valve body (1) upper end passes through multiple spiral shells Post (11) and multiple hex screws (12) are fixedly connected with bonnet (10), and the valve body (1) and the junction of bonnet (10) are also pacified Equipped with gasket seal (9), valve rod (6) passes through and upper seal support (8) is provided between bonnet (10), and valve rod (6) and bonnet (10), Upper seal support (8) upper end is filler (13), and filler (13) upper end is provided with filler pressing sleeve (14), the connection of filler pressing sleeve (14) upper end To hold-down grid (15), hold-down grid (15) passes through two bearing pins (16), two lifting bolts (17) and two the first hexagonal spiral shells The cooperation of female (18) is connected with bonnet (10), and bonnet (10) upper end is provided with valve stem nut (19), and valve stem nut (19) is by tight Determine screw (20) to be fixedly connected with bonnet (10), valve rod (6) passes through and is provided with handwheel at the top of valve stem nut (19), valve rod (6) (21), handwheel (21) upper end is provided with the second hex nut (23), is provided between handwheel (21) and the second hex nut (23) Plain washer (22).
CN201621141506.5U 2016-10-20 2016-10-20 A kind of Double sealing globe valve Active CN206419493U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621141506.5U CN206419493U (en) 2016-10-20 2016-10-20 A kind of Double sealing globe valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621141506.5U CN206419493U (en) 2016-10-20 2016-10-20 A kind of Double sealing globe valve

Publications (1)

Publication Number Publication Date
CN206419493U true CN206419493U (en) 2017-08-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621141506.5U Active CN206419493U (en) 2016-10-20 2016-10-20 A kind of Double sealing globe valve

Country Status (1)

Country Link
CN (1) CN206419493U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110274040A (en) * 2019-07-09 2019-09-24 南通翔骜液压润滑设备有限公司 Hydraulic hybrid accumulator shut-off valve
CN111059303A (en) * 2019-12-28 2020-04-24 中船重工重庆液压机电有限公司 Cone sealing structure and electromagnetic pilot control air valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110274040A (en) * 2019-07-09 2019-09-24 南通翔骜液压润滑设备有限公司 Hydraulic hybrid accumulator shut-off valve
CN111059303A (en) * 2019-12-28 2020-04-24 中船重工重庆液压机电有限公司 Cone sealing structure and electromagnetic pilot control air valve

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