CN2625665Y

CN2625665Y - Double sealing high pressure valve convenient for repairing

Info

Publication number: CN2625665Y
Application number: CN 03248210
Authority: CN
Inventors: 廖灿长
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-03
Filing date: 2003-07-03
Publication date: 2004-07-14
Anticipated expiration: 2013-07-03

Abstract

The utility model relates to a high pressure valve, in particular to an easy-to-be-repaired and a double sealing high pressure valve. The utility model aims at providing an improved easy-to-be-repaired and a double sealing high pressure valve to overcome an overall write-off of the valve and non compact sealing caused by incapable change after friction of a traditional valve sealing(base) of a same kind welded the valve body. The utility model comprises a valve body and a valve capacity, which is characterized in that the valve cavity is provided with a sealing device which comprises a big valve rod, a small valve body, an upper valve base, a lower valve base, etc without any welding of the big valve base and the small valve base with the valve body. When the big valve base and the small valve base are worn out, two valve bases can be changed conveniently at any time or the sealing surface can be whetted without changing the valve body to continue using the valve. The utility model is mainly used as a valve of high pressure vapor pipeline of the heat-engine industries.

Description

Convenient repairing double sealing high pressure valve

Technical field

The utility model relates to a kind of high pressure valve, relates in particular to a kind of convenient repairing double sealing high pressure valve.

Background technique

The conventional high-tension valve, a valve has only a valve seat, and its seal degree is poor, and valve seat (sealing pair) is that built-up welding or soldering are on valve body, like this, under high temperature and high pressure environment, valve seat is very easily by erosive wear, in case wearing and tearing, whole valve is just scrapped, so, adorn 2 above valves on each pipeline of thermoelectricity enterprise, this just causes the waste of uneconomical economically and material.

Summary of the invention

The purpose of this utility model is to provide a kind of improved convenient repairing double sealing high pressure valve, a valve has two valve seats (sealing pair), and valve seat is not welded on the valve body, so that change at any time behind the valve base sealing surface wear and use again behind valve seat or the grinding-in face and valve body is motionless, thereby overcome above-mentioned shortcoming.

Technical solution of the present utility model is that two valve seats are set in the valve pocket of a valve, and each valve seat is not welded on the valve body so that change easily at any time after valve seat is worn or grinding-in face and valve body is motionless.

The utility model comprises valve body 1 and valve pocket 2, it is characterized in that in the described valve pocket 2, a seal arrangement is arranged, this device is made up of big valve rod 3, small valve-rod 4, upper valve base 5, lower valve base 6, pressure cylinder 7, tension and compression nut 8, butterfly spring 9, packing layer 10, handwheel 11 and pressure cylinder nut 16, the upper end of described big valve rod 3 is spirally connected lower end fluted 12 by packing layer 10 and handwheel 11; The upper end of described small valve-rod 4 has protruding dish 13 to embed in the grooves 12 and by butterfly spring 9 and big valve rod 3 sockets, and the lower end then is movably connected with the sealing surface of lower valve base 6; Described upper valve base 5 and lower valve base 6 all are positioned at the bottom of valve pocket 2, and the upper end of upper valve base 5 has its pressure cylinder that compresses 7 and pressure cylinder nut 16, and then there is the tension and compression nut 8 that it is compressed the upper end of lower valve base 6.

The utility model has the advantages that two valve seats (sealing pair) are arranged in the valve pocket, so good seal performance, simultaneously, valve seat is not welded on the valve body, after valve seat is by erosive wear, at any time can change valve seat or grinding-in face and valve body is motionless, so just can prolong the working life of valve greatly, thus a purpose that can both realize saving and avoid waste with the material aspect economically.

Description of drawings

Accompanying drawing is a structural representation of the present utility model, wherein, and 1-valve body, 2-valve pocket, the big valve rod of 3-, 4-small valve-rod, 5-upper valve base, 6-lower valve base, the 7-pressure cylinder, 8-resistance to compression nut, 9-butterfly spring, 10-packing layer, the 11-handwheel, 12-groove, the protruding dish of 13-, 14-admission opening, the 15-exhaust hole, 16, the pressure cylinder nut, the 17-support, the 18-gland, 19-gland screw, 20-gland nut.

Embodiment

Below in conjunction with accompanying drawing the utility model and embodiment thereof are described in further detail.

Referring to accompanying drawing, make valve body 1 and valve pocket 2 earlier, lower valve base 6 and upper valve base 5 are placed successively the bottom of valve pocket 2, compress lower valve base 6 with tension and compression nut 8, compress upper valve base 5 with pressure cylinder 7 and pressure cylinder nut 16 again, the protruding dish 13 and the butterfly spring 9 of small valve-rod 4 upper ends are embedded in the groove 12 of big valve rod 3 lower ends, then, the lower end of small valve-rod 4 and the sealing surface of lower valve base 6 are movably connected, the upper end of big valve rod 3 then is spirally connected by packing layer 10 and handwheel 11, at last with support 17, gland 18, gland screw 19 and gland nut 20 are installed by position separately respectively and are tightened, if when needing to lead to vapour, can be with handwheel 11 rotation counterclockwise, then big valve rod 3 and small valve-rod 4 successively rise, steam is discharged through exhaust hole 15, if in the time of need closing, but clockwise direction rotation hand wheel 11, then big valve rod 3 promotes small valve-rod 4, exhaust hole 15 is closed, when upper valve base 5 and lower valve base 6 are worn, stop behind the vapour support 17, gland 18, gland screw 19, gland nut 20, unclamp respectively, big valve rod 3 small valve-rods 4 are taken out, unclamp pressure cylinder nut 16 again, pressure cylinder 7, take out big valve seat 5, unclamp tension and compression nut 8 then, take out that lower valve base 6 is changed or grinding-in face and valve body 1 is motionless, continue use after each component is installed again.

Claims

1, a kind of convenient repairing double sealing high pressure valve, comprise valve body (1) and valve pocket (2), it is characterized in that in the described valve pocket (2), a seal arrangement is arranged, this device is made up of big valve rod (3), small valve-rod (4), upper valve base (5), lower valve base (6), pressure cylinder (7), tension and compression nut (8), butterfly spring (9), packing layer (10), handwheel (11) and pressure cylinder nut (16), the upper end of described big valve rod (3) is spirally connected lower end fluted (12) by packing layer (10) and handwheel (11); The upper end of described small valve-rod (4) has protruding dish (13) to embed in the groove (12) and by butterfly spring (9) and big valve rod (3) socket, and the lower end then is movably connected with the sealing surface of lower valve base 6; Described upper valve base (5) and lower valve base (6) all are positioned at the bottom of valve pocket (2), and the upper end of upper valve base (5) has its pressure cylinder that compresses (7) and pressure cylinder nut (16), and then there is the tension and compression nut (8) that it is compressed the upper end of lower valve base (6).