CN206093012U

CN206093012U - High temperature high -pressure gas stop valve

Info

Publication number: CN206093012U
Application number: CN201621032820.XU
Authority: CN
Inventors: 康乐; 康彤
Original assignee: Beijing Pml Precision Mechanism Ltd
Current assignee: Beijing Pml Precision Mechanism Ltd
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2017-04-12
Anticipated expiration: 2026-08-31

Abstract

The utility model discloses a high temperature high -pressure gas stop valve, including valve clack and valve rod, be provided with on the valve clack and supply valve stem end male mounting groove, cup joint the lamella that is used for the valve rod is fixed in the mounting groove on the valve rod and cover, still including the sealed lid that is used for covering the lamella lid, sealed covering is provided with the mounting hole that supplies the valve rod to pass, the inside wall of mounting hole is provided with the elasticity sealing washer that offsets with the valve rod, sealed lid is provided with the sealing washer that is used for clearance between sealed lid and the valve clack towards the side of valve clack, its technical scheme main points are that the clearance between sealed lid and the valve rod is sealed by the elasticity sealing washer, and the elasticity sealing washer offsets with the lateral wall of valve rod, the axial removal of sealing washer along the valve rod has been avoided, clearance between sealed lid and the valve clack is sealed by the sealing washer, thereby avoid the corruption to the valve rod of liquid that valve rod and the lamella clearance between the lid is detained, effective improvement valve rod life's effect has been reached.

Description

High temperature and high pressure gas stop valve

Technical field

This utility model is related to a kind of valve, more specifically, it relates to a kind of high temperature and high pressure gas stop valve.

Background technology

Stop valve belongs to forced seal formula valve also known as pipe valve valve, so in valve closing, it is necessary to apply to press to flap Power, is not leaked with forced seal face, and when medium enters valve by flap lower section, operating physical force needs the pressure for overcoming fluid or gas Thrust produced by power, when stop valve is opened, the Lift of flap determines the flow of fluid or gas in stop valve, wherein The stop valve of control gas flow is referred to as high temperature and high pressure gas stop valve.

The Chinese patent of existing Publication No. CN205207697U provides a kind of service life for effectively extending flap Stop valve, in order that flap and valve rod connection more firmly, the lobe lid being threadedly coupled with flap is provided with the upper end of flap, The through hole passed through for valve rod is provided with lobe lid, valve rod is located at the diameter with diameter greater than valve rod of the end of flap side, passes through Lobe lid is pushed against the end of valve rod on flap, so as to the bottom of valve rod is more firm with what flap was fastened.

But, after closing high temperature and high pressure gas stop valve, because the temperature of stop valve is down to quickly room temperature, cause stop valve Into liquid, most liquid can flow out internal corrosion gas fast liquefying along valve body medial wall, flap lateral wall, and due to It is big with air contact area, so the liquid on valve body medial wall, flap lateral wall is also vapored away quickly, and valve rod and lobe lid it Between gap can be detained corrosive liquids, and these liquid-to-air contacts area are little, so it is difficult to vapor away, so as to long-time Between lobe lid and valve rod, cause the corrosion of valve rod, or even valve rod fractures.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide one kind to effectively improve valve rod and use the longevity The high temperature and high pressure gas stop valve of life.

For achieving the above object, this utility model provides following technical scheme：

A kind of high temperature and high pressure gas stop valve, including flap and valve rod, are provided with for valve stem end insertion on the flap Mounting groove, the lobe lid for being fixed on valve rod in mounting groove is socketed with the valve rod, also include for covering lobe lid Closure, is provided with the installing hole passed through for valve rod on the closure, the medial wall of the installing hole is provided with and valve rod phase The elastic seal ring for supporting, the closure is provided with for sealing the close of gap between closure and flap towards the side of flap Seal.

By adopting above-mentioned technical proposal, the gap between closure and valve rod is sealed by elastic seal ring, and elasticity is close Seal offsets with the lateral wall of valve rod, so as to the lateral wall of elastic seal ring and valve rod has larger frictional force, it is to avoid close Along the axial movement of valve rod, the gap between closure and flap sealed by sealing ring for seal so that closure, valve rod, The cavity of sealing is formed between flap, it is to avoid liquid enters gap between valve rod and lobe lid, so as to avoid valve rod and lobe lid it Between corrosion of the liquid be detained of gap to valve rod, it is ensured that flap is not corroded with flap junction, and valve rod stretches out closure Part, when liquefaction corrosive liquids flow through after, because the liquid flow on the valve rod of column type quickly flows away along valve rod, prevent Only valve rod stretches out the partial corrosion of closure, reaches the effect for effectively improving valve rod service life.

Preferably, the elastic seal ring extends to the outside of installing hole and forms water proof ring away from one end of mounting groove.

By adopting above-mentioned technical proposal, due to the setting of water proof ring, it is to avoid elastic seal ring, the inner side of installing hole Groove is formed between wall, the lateral wall of valve rod, and because sealing ring and water proof ring are typically made using quality of rubber materials, the material of rubber Matter is relatively low with the absorption affinity of liquid, and liquid can be rapidly flowed on closure along the lateral wall of water proof ring, then along closure stream Walk, so as to further prevent the probability of liquid holdup, further reduce the probability of valve rod corrosion.

Preferably, the outer circumferential sides wall of the water proof ring is provided with axially gradually increasing to mounting groove orient diameter along valve rod Big guide face.

By adopting above-mentioned technical proposal, due to the setting of guide face, when stopping liquid in high temperature and high pressure gas stop valve After flowing, liquid can be discharged rapidly from water pipe, and the liquid adhered on valve rod can be led due to action of gravity slide downward when sliding to During stream interface, guide face can be oriented to liquid, so as to by guiding fluid away from valve rod side so that the liquid on valve rod Quick to flow out, complete rear Quick-air-drying keeps the drying of valve rod.

Preferably, the outer circumferential sides wall of the water proof ring is provided with the tapered waterproof ring that outward flange is fitted with closure.

By adopting above-mentioned technical proposal, due to the setting of tapered waterproof ring, can effectively prevent liquid holdup valve rod, The transition position of elastic seal ring, closure, on the other hand, the combination of tapered waterproof ring and guide face can be made from guide face The liquid of outflow is led further to, so as to the effect for quickly flowing out, in addition, being also avoided that the liquid flowed out from guide face Backflow.

Preferably, the sealing ring is internally provided with the air pressure chamber coaxial with closure.

By adopting above-mentioned technical proposal, due to the setting of air pressure chamber, after sealing ring life-time service, its sealing loop material After the elasticity of matter is substantially reduced, due to there is air pressure in air pressure chamber, it is possible to making sealing ring integrally keep elasticity, sealing ring energy It is enough to be filled in for a long time between closure and flap, reach the effect of long-term holding sealing ring tightness.

Preferably, the sealing ring is interior and is equipped with the magnetic part for adsorbing flap positioned at the side of air pressure chamber.

By adopting above-mentioned technical proposal, by the setting of magnetic part, the side of sealing ring laminating flap can be made tight Be fitted on the surface of flap so that gap can not or can not be produced on sealing ring and flap, reach better seal effect.

Preferably, the magnetic part is located between air pressure chamber and flap.

By adopting above-mentioned technical proposal, magnetic part is more near flap, it is to avoid the barrier of air pressure chamber and cause inhale The active force of attached flap declines, it is ensured that absorption affinity of the magnetic part to flap, so that sealing ring is located between magnetic part and flap Part clamped by magnetic part and flap, it is ensured that the sealing of closure.

Preferably, the magnetic part is circular or oval along the section of valve rod axial direction.

By adopting above-mentioned technical proposal, because the section of magnetic part is circular or oval, so as to avoid magnetic part With wedge angle, so as to prevent sealing ring to be located at the stress concentration of sharp corner, and cause the damage of sealing ring, reach prolongation sealing ring Service life effect.

In sum, this utility model has the advantages that：

1st, by the setting of closure, elastic seal ring and sealing ring, make to form sealing between closure, valve rod, flap Cavity, it is to avoid corrosion of the liquid that the gap between valve rod and lobe lid is detained to valve rod, reach the use for effectively improving valve rod The effect in life-span；

2nd, by the setting of water proof ring, the liquid on valve rod is quickly flowed out, so as to further reduce valve rod corrosion can Can property；

3rd, by the setting of magnetic part, can effectively ensure that the sealing effectiveness between sealing ring and flap.

Description of the drawings

Fig. 1 is the structural representation of embodiment；

Fig. 2 is the enlarged drawing of part A in Fig. 1；

Fig. 3 is the enlarged drawing of part B in Fig. 1；

Fig. 4 is schematic partial sectional view in embodiment, is mainly used in embodying the shape of magnetic part.

In figure：1st, flap；11st, mounting groove；12nd, lobe lid；2nd, valve rod；21st, handwheel；22nd, fixed block；3rd, closure；31st, pacify Dress hole；32nd, elastic seal ring；321st, water proof ring；322nd, guide face；323rd, tapered waterproof ring；33rd, sealing ring；331st, atmospheric pressure cavity Room；332nd, magnetic part；4th, water inlet pipe；5th, outlet pipe；51st, installing port；6th, valve gap；61st, airtight and watertight padding；62nd, lifting ring；7th, valve Mouthful.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment, this utility model is described in detail.

A kind of high temperature and high pressure gas stop valve, with reference to Fig. 1, it includes water inlet pipe 4, outlet pipe 5, connection water inlet pipe 4 and goes out The valve port 7 of water pipe 5, the axis of valve port 7 is vertical state, and outlet pipe 5 is located at the top of valve port 7 and is provided with the peace communicated with the external world Dress mouth 51, installing port 51 is coaxially disposed with valve port 7, is provided with high temperature and high pressure gas stop valve for installing port 51 to be sealed Rubber ring can be provided between the end wall of valve gap 6, valve gap 6 and outlet pipe 5, valve gap 6 is fixed by screws on outlet pipe 5, valve The middle part of lid 6 is provided through the valve rod 2 of vertical state, in order to ensure that valve rod 2 and the sliding junction of valve gap 6 are provided with sealing and fill out Material 61, valve gap 6 is provided with external screw thread integrally formed with lifting ring 62, the top half of valve rod 2, and the latter half is smooth cylindrical Bar, the medial wall of lifting ring 62 is provided with the female thread being threadedly coupled with the lateral wall of valve rod 2.

With reference to Fig. 1, in order that valve rod 2 is easy to operation, the end for being located at the top of lifting ring 62 in valve rod 2 is fixedly installed handss Wheel 21, by the rotation valve rod 2 of handwheel 21, so that the external screw thread of valve rod 2 threads turn, valve rod on the female thread of lifting ring 62 The 2 part oscilaltions for being located at outlet pipe 5, the lower end of valve rod 2 is provided with flap 1, and flap 1 is moved up and down so as to incite somebody to action with valve rod 2 Valve port 7 is sealed or opened, so as to supplied gas pass through or disconnect the flowing of gas.

With reference to Fig. 1, the upper surface of flap 1 is tapered structure, is easy to the downward liquid flow for liquefying, in order to fix valve rod 2 Lower end, the upper surface of flap 1 is provided with mounting groove 11, the bottom of valve rod 2 is integrally formed with consolidating with diameter greater than valve rod 2 Determine block 22, lobe lid 12 is socketed with valve rod 2, the lateral wall of lobe lid 12 is threadedly coupled with mounting groove 11, when lobe lid 12 is to mounting groove During 11 screw thread turns, the lower end of lobe lid 12 offsets first with fixed block 22, so as to realize the lower end of valve rod 2 with flap 1 It is fixed.

With reference to Fig. 1, in order to prevent valve rod 2 with the junction of flap 1 by liquid corrosion, the top of flap 1 is provided with sealing Lid 3, closure 3 is in bottle lid-like, and the upper surface of closure 3 is tapered structure, is easy to corrosive liquids slide downward, is sealed Lid 3 is coaxially arranged with installing hole 31, and installing hole 31 is used to be passed through for valve rod 2, when closure 3 is socketed on valve rod 2, closure 3 will cover at lobe lid 12, and the medial wall of installing hole 31 is provided with elastic seal ring 32, and the material of elastic seal ring 32 is fourth cyanogen rubber Glue, medial wall and the lateral wall of valve rod 2 of elastic seal ring 32 offset, and elastic seal ring 32 is in the medial wall of installing hole 31 and valve rod In the state of compression between 2 lateral wall, so as to avoid movement of the closure 3 along the axial direction of valve rod 2.

See figures.1.and.2, elastic seal ring 32 extends upwardly to the outside of installing hole 31 and is integrally molded so as water proof ring 321, The outer circumferential sides wall of water proof ring 321 is provided with guide face 322, and guide face 322 is pyramid type structure, and guide face 322 is close with elasticity Seal 32 is coaxially disposed, and one end of the small diameter of guide face 322 is above, and the larger-diameter one end of guide face 322 is located at down Side, consequently facilitating liquid flows to the direction away from valve rod 2；The lower end of water proof ring 321 is provided with tapered waterproof ring 323, bores The upper end inside edge of type waterproof ring 323 is integrally formed with water proof ring 321, lower end outward flange and the sealing of tapered waterproof ring 323 The lateral wall of lid 3 offsets, so as to prevent liquid from entering between valve rod 2 and closure 3.

With reference to Fig. 1 and Fig. 3, the circumferential side wall of the lower section of closure 3 is bonded with sealing ring 33, and the material of sealing ring 33 is fourth cyanogen Rubber, closure 3 is offseted by sealing ring 33 with flap 1, and during closure 3 is installed, closure 3 is downward along valve rod 2 Promote, until sealing ring 33 offsets with flap 1, closure 3 covers on lobe lid 12.

With reference to Fig. 1 and Fig. 3, in order that the easily deformable and elastic long-term holding of sealing ring 33, sets inside sealing ring 33 The air pressure chamber 331 of ring-type is equipped with, air pressure chamber 331 is coaxially disposed with sealing ring 33, and the atmospheric pressure in air pressure chamber 331 is powerful In extraneous atmospheric pressure, the atmospheric pressure in air pressure chamber 331 promotes the side wall of sealing ring 33 to bulge to outside, so as to abundant Gap between sealing closure 3 and flap 1.

With reference to magnetic part 332 is equipped with Fig. 1, Fig. 3 and Fig. 4, sealing ring 33, magnetic part 332 is the Magnet of circulus, Magnet is coaxially disposed with sealing ring 33, and Magnet is located between air pressure chamber 331 and flap 1, because flap 1 is by ferrous materials system Into, so Magnet has absorption affinity to flap 1, so as to sealing ring 33 is tightly fitted on flap 1, in order to avoid Magnet will Sealing ring 33 is located at the partial pinchoff between Magnet and flap 1, and Magnet is circular or ellipse along the axial section of valve rod 2, Avoid the formation of wedge angle；By above-mentioned setting, closure 3, flap 1 surround the sealing cavity for surrounding lobe lid 12 jointly, what is used During, gas or liquid are not penetrated into, so as to effectively keep flap 1 not to be corroded with the junction of flap 1, when flap 1 After valve port 7 is closed, corrosive gas liquefaction is in liquid, and most of liquid meeting Jing outlet pipes 5 flow out, and valve rod 2 is located at closure 3 Outside part, liquid due to action of gravity, along valve rod 2, guide face 322, tapered waterproof ring 323, closure 3 lateral wall Flow on the medial wall of outlet pipe 5, then Jing outlet pipes 5 flow out, the overall liquid that will not be detained for a long time of valve rod 2, so as to effectively prolong The service life of long valve rod 2.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to Go out, for those skilled in the art, some improvement under the premise of without departing from this utility model principle and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. a kind of high temperature and high pressure gas stop valve, including flap (1) and valve rod (2), are provided with the flap (1) and supply valve rod (2) mounting groove (11) of end insertion, is socketed with for valve rod (2) to be fixed in mounting groove (11) on the valve rod (2) Lobe lid (12), is characterized in that：Also include the closure (3) for covering lobe lid (12), be provided with the closure (3) and supply valve The installing hole (31) that bar (2) is passed through, the medial wall of the installing hole (31) is provided with the elastic seal ring offseted with valve rod (2) (32), the closure (3) is provided with for sealing gap between closure (3) and flap (1) towards the side of flap (1) Sealing ring (33).

2. high temperature and high pressure gas stop valve according to claim 1, is characterized in that：The elastic seal ring (32) is away from peace One end of tankage (11) extends to the outside of installing hole (31) and forms water proof ring (321).

3. high temperature and high pressure gas stop valve according to claim 2, is characterized in that：The excircle of the water proof ring (321) Side wall is provided with the guide face (322) gradually increased along axial direction to mounting groove (11) orient diameter of valve rod (2).

4. high temperature and high pressure gas stop valve according to claim 2, is characterized in that：The excircle of the water proof ring (321) Side wall is provided with the tapered waterproof ring (323) that outward flange is fitted with closure (3).

5. high temperature and high pressure gas stop valve according to claim 1, is characterized in that：The inside of the sealing ring (33) is arranged There is the air pressure chamber (331) coaxial with closure (3).

6. high temperature and high pressure gas stop valve according to claim 5, is characterized in that：Air pressure is located in the sealing ring (33) The side of chamber (331) is equipped with the magnetic part (332) for adsorbing flap (1).

7. high temperature and high pressure gas stop valve according to claim 6, is characterized in that：The magnetic part (332) is positioned at air pressure Between chamber (331) and flap (1).

8. high temperature and high pressure gas stop valve according to claim 7, is characterized in that：The magnetic part (332) is along valve rod (2) The section of axial direction is circular or oval.