CN202215756U

CN202215756U - High-temperature high-pressure stop valve

Info

Publication number: CN202215756U
Application number: CN2011203334701U
Authority: CN
Inventors: 邱庆民
Original assignee: JIANGSU SUGAO FLUID MACHINERY CO Ltd
Current assignee: JIANGSU SUGAO FLUID MACHINERY CO Ltd
Priority date: 2011-09-01
Filing date: 2011-09-01
Publication date: 2012-05-09
Anticipated expiration: 2021-09-01

Abstract

A high-temperature high-pressure stop valve comprises a valve body, a valve seat, a valve flap, a plate, a valve flap pressing cover, a valve rod, a middle flange pad, a stud, a nut, an upper sealing seat, an octagonal seal ring, a filler pad, a pin shaft, a filler, a filler press sleeve, a filler press plate, a swing bolt, a swing nut, a limiting plate, a bolt, a nut, a valve cover, a bearing, an oil cup, a valve rod nut, a bearing press cover, a pan head screw, a bearing sleeve, a hand wheel and a locking nut. The valve seat is connected onto the valve body through threads. The valve flap, the plate, the valve rod, the valve flap pressing cover, the upper sealing seat, the filler pad, the filler, the filler press sleeve, the filler press plate, the limiting plate, the valve rod nut, the bearing, the hand wheel and the locking nut are arranged on the valve seat sequentially. The valve body is fixedly connected with the valve cover through the stud, the filler press plate is connected with the valve cover through the swing bolt and the swing nut, and the hand wheel is fixed by the locking nut. The high-temperature high-pressure stop valve is novel in structure and flexible in movements and can keep a good sealing state under high temperature and high pressure after repeat opening and closing.

Description

High temperature and high pressure cut-off valve

Technical field

The utility model relates to a kind of stop valve that is used to control fluid, particularly relates to a kind of medium temperature and can reach the high temperature and high pressure cut-off valve that 500 ℃, pressure reach as high as 48Mpa.

Background technique

Stop valve is to be used for one of vitals of control flows body medium, and the flap of existing stop valve adopts fixing tapered basically, and sealing surface is identical with valve body material.The stop valve of this structure and material will make the sealing surface of valve produce with the flap place after opening and closing several times under the effect of the high-temperature, high pressure fluid through valve to lose trace; Wreck; The carrier performance variation causes spool, valve village to be leaked, and causes system to sew accident when serious; Therefore, this kind stop valve is not suitable under high-temperature and high-pressure conditions, using.

Summary of the invention

The purpose of the utility model is to overcome the defective that exists in the existing technology, and a kind of novel structure, flexible movements are provided, and under HTHP, opens and closes the high temperature and high pressure cut-off valve that still can keep the excellent sealing state repeatedly.

The technological scheme that the utility model adopts is:

High temperature and high pressure cut-off valve, comprise valve body, valve seat, flap, plate, flap gland, valve rod, middle flange gasket, double-screw bolt, nut, upper seal support, anistree seal ring, Packing seat, bearing pin ,-filler, filler gland, hold-down grid, swing bolt, movable joint nut, limiting board, bolt, nut, valve gap, bearing, lubricating cup, Stem Mut, bearing gland, stopping screw, bearing housing, handwheel, locking nut.The connecting means of its critical piece be valve seat through being threaded on the valve body, reinforce the connection with electric welding simultaneously.Load onto flap, plate, valve rod, flap gland, upper seal support, Packing seat, filler, filler gland, hold-down grid, limiting board, Stem Mut, bearing, handwheel, locking nut successively; Valve body is connected with bolt with valve gap to be fixed, and hold-down grid is connected with swing bolt, movable joint nut with valve gap.Handwheel has locking nut to fix.

Adopt plane sealing between described flap of the utility model and the valve seat, the alloy surfacing is carried out on flap sealing surface top layer, and described valve rod is made vertical lift, and its pressure makes closely pressing between flap and the valve seat.

The utility model compared with prior art has the following advantages:

1, the alloy surfacing is carried out on flap sealing surface top layer, under high temperature and high pressure condition, and erosion resistance, non-scaling, long service life.

2, adopt plane sealing between flap and the valve seat, valve rod is made vertical lift, and its pressure makes closely pressing between flap and the valve seat, and rising or falling speed is fast, and switch is convenient.

3, adopt plane sealing formula structure, the medium flow resistance coefficient is little, can on vertical or vertical formula pipe network, be suitable for simultaneously.

Description of drawings

Fig. 1 is the sectional structure chart of the utility model.

In Fig. 1: the 1-valve body; The 2-valve seat; The 3-flap; The 4-plate; 5-flap gland; The 6-valve rod; Flange gasket among the 7-; The 8-double-screw bolt; The 9-nut; The 10-upper seal support; The anistree seal ring of 11-; The 12-Packing seat; The 13-bearing pin; The 14-filler; 15-filler gland; The 16-hold-down grid; The 17-swing bolt; 18-movable joint nut; The 19-limiting board; The 20-bolt; The 21-nut; The 22-valve gap; The 23-bearing; The 24-lubricating cup; The 25-Stem Mut; The 26-bearing gland; The 27-stopping screw; The 28-bearing housing; The 29-handwheel; The 30-locking nut.

Embodiment

To combine the concrete reality of the further the utility model of Figure of description to put mode below.

High temperature and high pressure cut-off valve comprises valve body 1, valve seat 2, flap 3, plate 4, flap gland 5, valve rod 6, middle flange gasket 7, double-screw bolt 8, nut 9, upper seal support 10, anistree seal ring 11, Packing seat 12, bearing pin 13, filler 14, filler gland 15, hold-down grid 16, swing bolt 17, movable joint nut 18, limiting board 19, bolt 20, nut 21, valve gap 22, bearing 23, lubricating cup 24, Stem Mut 25, bearing gland 26, stopping screw 27, bearing housing 28, handwheel 29, locking nut 30.The connecting means of its critical piece be valve seat 2 through being threaded on the valve body 1, reinforce the connection with electric welding simultaneously.Load onto flap 3, plate 4, valve rod 6, flap gland 5, upper seal support 10, Packing seat 12, filler 14, filler gland 15, hold-down grid 16, limiting board 19, Stem Mut 25, bearing 23, handwheel 29, locking nut 30 successively; Valve body 1 is connected fixing with valve gap 22 usefulness bolts 20, hold-down grid 16 is connected with swing bolt 17, movable joint nut 18 with valve gap.Handwheel 29 has locking nut 30 fixing.

Claims

1. high temperature and high pressure cut-off valve; Comprise valve body, valve seat, flap, plate, flap gland, valve rod, middle flange gasket, double-screw bolt, nut, upper seal support, anistree seal ring, Packing seat, bearing pin ,-filler, filler gland, hold-down grid, swing bolt, movable joint nut, limiting board, bolt, nut, valve gap, bearing, lubricating cup, Stem Mut, bearing gland, stopping screw, bearing housing, handwheel, locking nut; It is characterized in that: valve seat is through being threaded on the valve body; Reinforce the connection with electric welding simultaneously; Load onto flap, plate, valve rod, flap gland, upper seal support, Packing seat, filler, filler gland, hold-down grid, limiting board, Stem Mut, bearing, handwheel, locking nut successively; Valve body is connected fixing with valve gap with bolt; Hold-down grid is connected with swing bolt, movable joint nut with valve gap, and handwheel has locking nut to fix.

2. according to claim 1, a kind of high temperature and high pressure cut-off valve is characterized in that: the alloy surfacing is carried out on described flap sealing surface top layer.