CN201401513Y

CN201401513Y - High temperature and high pressure resistant seal-sealing angle cut-off throttle valve

Info

Publication number: CN201401513Y
Application number: CN200920040369XU
Authority: CN
Inventors: 唐桂生
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-21
Filing date: 2009-04-21
Publication date: 2010-02-10
Anticipated expiration: 2019-04-21

Abstract

The utility model discloses a high temperature and high pressure resistant seal-sealing angle cut-off throttle valve; a stepped lower sealing box (23) is machined on the inner lower part of a balancebase (15), a composite V-shaped filler (17) is arranged in the lower sealing box, the outer circle of the V-shaped filler is contacted with the inner circle of the sealing box of the balance base (15), the inner circle of the V-shaped filler is contacted with the outer circle of a valve core (20), the valve core (20), the filler (17) and the balance base (15) are sealed by a lower pressing cover (19), the lower pressing cover (19) is mounted in a lower filler compressing nut (16); a stepped upper sealing box (22) is machined on the inner upper part of the balance base (15), a composite V-shaped filler (10) is arranged in the upper sealing box (22), the V-shaped filler (10) is arranged in the upper sealing box (22), an upper pressing cover (9) is mounted on the filler and is in threaded match with the balance base (15) through an upper filler compressing nut (8); the high temperature and high pressure resistant seal-sealing angle cut-off throttle valve adopts sealing boxes to realize self sealing, has good seal performance, is high temperature and high pressure resistant, has resistance against strong corrosive medium and has wide application range.

Description

High temperature high voltage resistant selfsealings angie type cut-off throttle valve

Technical field

The utility model relates to valve, is specifically related to a kind of high temperature high voltage resistant selfsealings angie type cut-off throttle valve.

Background technique

At present, the used high pressure angie type of industries such as oil, chemical industry, nuclear power, electric power ends, throttle valve, the general JB/T mechanical industry ministerial standard that adopts, this standard has been widely used in high pressure angie type forging valve, pipe fitting, fastening piece etc., flap is communicated with balanced seal seat epicoele, the surface of contact of flap and balanced seal seat relies on rubber o-ring or tetrafluoro O type to enclose seal action, O type circle is generally three roads, and using scope, Applicable temperature, medium, sealing effect, stability and life cycle all are subjected to certain restriction.Rubber elasticity is good, but heatproof, anti-strong rotten poor-performing; The F4 corrosion resistant performance is better, but elasticity is relatively poor, heatproof under high-pressure situations also 180 ℃ of adaptive temperatures, below the pressure 32Mpa, and sealability is relatively poor; Existing balance angie type cut-off throttle valve Applicable temperature is generally below 180 ℃, medium is working environments such as water, liquid, weak acid bases, the balanced type valve can't be brought into play its advantage function on the process pipelines of high temperature, high pressure, strong corrosive medium, be difficult to adapt to, more do not reach stable sealing effect and life cycle, bring certain potential safety hazard to manufacturing enterprise, and troublesome poeration, volume are too big, switch poor sensitivity, manufacture cost are bigger.

Summary of the invention

The purpose of this utility model is: a kind of high temperature high voltage resistant selfsealings angie type cut-off throttle valve is provided, and this valve adopts the sealed letter selfsealings, good seal performance, and high temperature high voltage resistant, the medium of being able to bear strong corrosion, using scope is wide.

Technical solution of the present utility model is: this valve comprises valve body, vavle shelf, valve rod, spool, the balance seat, handle and finder, spool is contained in balance seat and the valve body, the balance seat is contained in valve body and the vavle shelf by sealing plain cushion and connecting bolt, nut is fastening, valve rod is contained on the Stem Mut, Stem Mut is contained on the vavle shelf, handle is contained on the Stem Mut, and nut cooperates with Stem Mut by the gland nut pressing handle, valve inlet, outlet is 90 ° vertically, it is characterized in that: be positioned at bottom working station stepwise lower seal letter in the balance seat, adorn high temperature resistant in the sealed letter, high pressure, the be able to bear strong corrosion combined type V-type filler of Inco nickel silk folder braiding toughness graphite of medium, on the every component of V-type filler, in, down, V-type filler cylindrical contacts with the interior circle of the lower seal letter of balance seat, circle contacts with the spool cylindrical in the V-type filler, by the lower cover sealed valve core, filler and balance seat, lower cover is installed in the following filler gland nut, the gland nut internal thread cooperates with balance seat outside thread, compresses filler by screw thread rotation take off and landing strip dynamic pressure lid; Be positioned at sealed letter on the working station stepwise of top in the balance seat, adorn the combined type V-type filler of the Inco nickel silk folder braiding toughness graphite of high temperature resistant, high pressure, the medium of being able to bear strong corrosion in the last sealed letter, install gland above the filler, by screw-thread fit on last filler gland nut and the balance seat, rotation and lifting drives upper press cover and compresses filler.

In the high temperature high voltage resistant selfsealings angie type cut-off throttle valve of the present utility model, the upper-end surface that the valve body import contacts with spool is an inner conical surface, and the lower end surface that spool contacts with the valve body import is a sphere, and spool and valve body are the sealing of ball and face.

Valve body import medium passes through body cavity, the medium pressurized enters in the balance seat by the V-type inclined hole in the spool, be provided with sealed letter in the balance seat, spool and valve rod, balance seat seal by the V-type filler, thereby make spool equal energy maintaining valve in-core pressure outside unanimity under the situation of pressurized, without any resistance, valve rod is by the lifting of Stem Mut rotating band ovable valve stem, and the valve rod elevating movement drives the spool elevating movement.

The utlity model has following advantage: 1, this valve adopts the combined type V-type filler of the Inco nickel silk folder woven graphite of high temperature resistant, high pressure, the medium of being able to bear strong corrosion, change original O RunddichtringO structure, heatproof is in 550 ℃ of scopes, indeformable, never degenerate, withstand voltage at 45Mpa, anti-strong acid, highly basic, strong corrosive medium, sealability is stable; 2, the sealed letter of balance seat packs to organize stuffing box packing into more, changes former O type circle two to the three seals point, and sealing effect is greatly improved, and has strengthened sealability and life cycle and using scope; 3, original similar valve can't be worked under high temperature, high pressure, strong corrosive medium situation, can only select for use mechanical transmission, powered version to carry out valve switch, particularly the heavy caliber high pressure valve is all the more so, and this valve is by balance seat inner chamber self pressure, maintaining valve in-core pressure outside balance, valve switch does not have resistance of medium, easily solve the spool opening and closing, flexible operation is laborsaving, utilize in the valve cavity self wiper seal, thereby greatly reduce cost of production, improve using scope and quality level.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: 1 and nut, 2 handles, 3 gland nuts, 4 plane bearings, 5 Stem Muts, 6 valve rods, 7 finders, filler gland nut on 8,9 upper press covers, 10V type filler, 11 nuts, 12 vavle shelves, 13 bolts, 14 sealing plain cushions, 15 balance seats, 16 times filler gland nuts, 17V type filler, 18 suspension ring, 19 lower covers, 20 spools, 21 valve bodies, sealed letter on 22,23 lower seal letters.

Embodiment

As shown in Figure 1, this valve comprises valve body 21, vavle shelf 12, valve rod 6, spool 20, balance seat 15, handle 2 and finder 7, spool 20 is contained in balance seat 15 and the valve body 21, balance seat 15 is contained in valve body 21 and the vavle shelf 12 by sealing plain cushion 14 and connecting bolt 13, nut 11 fastening, valve rod 6 is contained on the Stem Mut 5, Stem Mut 5 is contained on the vavle shelf 12, handle 2 is contained on the Stem Mut 5, and nut 1 cooperates with Stem Mut 5 by gland nut 3 pressing handles 2, valve inlet, outlet be 90 ° vertical; It is characterized in that: be positioned at bottom working station stepwise lower seal letter 23 in the balance seat 15, adorn high temperature resistant in the lower seal letter 23, high pressure, the be able to bear strong corrosion combined type V-type filler 17 of Inco nickel silk folder braiding toughness graphite of medium, on V-type filler 17 every components, in, down, V-type filler cylindrical contacts with the lower seal letter 23 interior circles of balance seat 15, circle contacts with spool 20 cylindricals in the V-type filler 17, by lower cover 19 sealed valve cores 20, filler 17 and balance seat 15, in the following filler gland nut 16 lower cover 19 is installed, compress female 16 internal threads and cooperate, drive lower cover 19 by the screw thread rotation lifting and compress filler with balance seat 15 outside threads; Be positioned at sealed letter 22 on the working station stepwise of top in the balance seat 15, adorn the combined type V-type filler 10 of the Inco nickel silk folder braiding toughness graphite of high temperature resistant, high pressure, the medium of being able to bear strong corrosion in the last sealed letter 22, V-type filler 10 is contained in the sealed letter 22, install gland 9 above the filler 10, by last filler gland nut 8 and balance seat screw-thread fit, rotation and lifting drives upper press cover 9 and compresses filler.

Valve body import medium is by the inner chamber of valve body 21, the medium pressurized enters in the balance seat 15 by the V-type inclined hole in the spool 20, be provided with upper-lower seal letter 22,23 in the balance seat 15, spool 20 seals by V-

type filler

10,17 with valve rod 6, balance seat 15, thereby make spool 20 under the situation of pressurized, all can keep spool 20 external and internal pressure unanimities, without any resistance, valve rod 6 is by 6 liftings of Stem Mut 5 rotating band ovable valve stems, and valve rod 6 elevating movements drive spool 20 elevating movements.

Claims

1. high temperature high voltage resistant selfsealings angie type cut-off throttle valve, this valve comprises valve body (21), vavle shelf (12), valve rod (6), spool (20), balance seat (15), handle (2) and finder (7), spool (20) is contained in balance seat (15) and the valve body (21), it is interior by sealing plain cushion (14) and bolt (13) with vavle shelf (12) that balance seat (15) is contained in valve body (21), nut (11) is fastening, valve rod (6) is contained on the Stem Mut (5), Stem Mut (5) is contained on the vavle shelf (12), handle (2) is contained on the Stem Mut (5), and nut (1) cooperates with Stem Mut (5) by the tight handle (2) of gland nut (3), valve inlet, outlet is 90 ° vertically, it is characterized in that: be positioned at bottom working station stepwise lower seal letter (23) in the balance seat (15), adorn high temperature resistant in the lower seal letter (22), high pressure, the be able to bear strong corrosion combined type V-type filler (17) of Inco nickel silk folder braiding toughness graphite of medium, on the every component of V-type filler (17), in, down, V-type filler (17) cylindrical contacts with the interior circle of the lower seal letter (23) of balance seat (15), circle contacts with spool (20) cylindrical in the V-type filler (17), by lower cover (19) sealed valve core (20), filler (17) and balance seat (15), lower cover (19) is installed in the following filler gland nut (16), gland nut (16) internal thread cooperates with balance seat (15) outside thread, compresses filler by screw thread rotation take off and landing strip dynamic pressure lid; Be positioned at sealed letter (22) on the working station stepwise of top in the balance seat (15), adorn the combined type V-type filler (10) of the Inco nickel silk folder braiding toughness graphite of high temperature resistant, high pressure, the medium of being able to bear strong corrosion in the last sealed letter (22), V-type filler (10) is contained in the sealed letter (22), install gland (9) above the filler (10), by last filler gland nut (8) and balance seat screw-thread fit, rotation and lifting drives upper press cover (9) and compresses filler.

2. high temperature high voltage resistant selfsealings angie type cut-off throttle valve according to claim 1, it is characterized in that: the upper-end surface that the valve body import contacts with spool is an inner conical surface, and the lower end surface that spool contacts with the valve body import is a sphere, and spool and valve body are the sealing of ball and face.