CN202927079U

CN202927079U - Butterfly valve for harmonious locomotive

Info

Publication number: CN202927079U
Application number: CN 201220535752
Authority: CN
Inventors: 黄立新
Original assignee: ZHUZHOU RONGDA RAILWAY ELECTROMECHANICAL CO Ltd
Current assignee: Zhuzhou Rongda Electric Co ltd
Priority date: 2012-10-19
Filing date: 2012-10-19
Publication date: 2013-05-08
Anticipated expiration: 2022-10-19

Abstract

The utility model discloses a butterfly valve for a harmonious locomotive. The butterfly valve comprises valve plates, a valve body, a valve rod and a sealing part. The valve body is made of cast aluminum alloy. A fixing sleeve is arranged at the top end of the valve rod. The fixing sleeve is provided with two spherical surfaces which form an included angle of 90 degrees. When the butterfly valve is closed or completely opened, the spherical surfaces abut against an elastic steel ball arranged in the valve body so as to achieve locating and locking. The valve rod is provided with a locating pin at the 45-degree included angle. When the butterfly valve is closed or completely opened, the locating pin abuts against a limiting block of the valve body so as to achieve a bi-directional limiting function. The butterfly valve for the harmonious locomotive is capable of maintaining a stable opening or closing state in the running process of the locomotive and ensures running safety of the electric locomotive.

Description

Harmonious locomotive butterfly valve

Technical field

The utility model relates to the butterfly valve that uses on a kind of harmonious locomotive, is specifically related to a kind of butterfly valve that is used in harmonious locomotive main transformer, belongs to the valve technology field.

Background technique

Present transformer butterfly valve mainly by valve block, valve body, valve rod and Sealing etc., leans on valve hole to seal to cut out oil pipe line with contacting of rubber seal on being arranged on valve body; Valve hole is cylindrical hole, and valve rod is concentric with valve hole, and valve body mostly is the cast member of integral type, in the edge of valve block central cross-section, annular seal groove is set one, and rubber seal is sleeved on and forms sealing in annular seal groove; The mode that the sealing of valve rod generally adopts bolt to compress filler is carried out, and sealability is relatively poor, easily wearing and tearing and aging, and butterfly valve produces leakage phenomenon between valve rod and valve body in use for some time, affects sealability and the working life of butterfly valve; Feel to judge the valve opening and closing position by the operator, if use the spanner rotation valve rod, infinite place device and obviously open and close mark causes the valve opening and closing malposition, causes seal spool sternly not produce leakage phenomenon or valve and does not all open phenomenon.

The model utility content

The purpose of this utility model is the deficiency for the butterfly valve that uses on existing harmonious locomotive, proposes that a kind of favorable sealing property, reliability are higher, failure rate is low, the harmonious locomotive butterfly valve of longer service life.

The novel technological scheme that adopts that solves the problems of the technologies described above of this use is: a kind of harmonious locomotive butterfly valve comprises valve block, valve body, valve rod and Sealing; Described valve body is cast aluminium alloy; Described valve stem tip is provided with fixed cover, and described fixed cover is provided with two sphericals that are 90 ° of angles, and butterfly valve is in when cutting out or opening fully, and spherical pushes up mutually with the elastic steel ball that is contained in valve body, realizes position and lock; Described valve rod is equipped with the locating stud that is 45 ° of angles, and butterfly valve is in when cutting out or opening fully, and described locating stud pushes up mutually with the valve body limiting stopper, realizes bidirectionally limited effect.

As further improvement of the utility model, on described valve rod, the parallel seal groove that offers, be provided with the O RunddichtringO in seal groove.

As further improvement of the utility model, described O RunddichtringO is oil resistant hydrogenated nitrile-butadiene rubber seal ring, and oil resistant hydrogenated nitrile-butadiene rubber seal ring has that friction factor is lower, not easy to wear, the aging-resistant advantage, effectively extends the working life of butterfly valve.

As further improvement of the utility model, the quantity of described seal groove and O RunddichtringO can be one or more, improves sealability.

As further improvement of the utility model, described valve rod adopts the stainless steel material manufacturing, improves the corrosion resistance of valve rod.

As further improvement of the utility model, described valve stem tip is provided with indicator board, and described direction board is provided with red arrow, is used to indicate the open and-shut mode of butterfly valve, when butterfly valve was in closed condition, the direction of described red arrow was the flow direction of butterfly valve inner fluid.

The utility model valve body adopts the cast aluminium alloy die cast, the valve rod stainless steel material, and volume is little, and is lightweight, small volume and less weight, material consumption is economized, and can install at an arbitrary position; Adopt bidirectionally limited control valve open/close states, extended the working life of valve, startup with pressure still can keep zero leakage more than 100,000 times; Valve rod adopts double sealing structure, has guaranteed the sealability of butterfly valve valve rod, and handle has adopted bidirectionally limited device simultaneously, and butterfly valve keeps the stable state of opening, break in the locomotive operation process, has guaranteed the security of operation of electric locomotive.

Description of drawings

Fig. 1 is overall structure schematic diagram of the present utility model;

Fig. 2 is structure cross-sectional schematic of the present utility model;

Fig. 3 is schematic top plan view of the present utility model.

In figure: 1. locating stud, 2. fixed cover, 3. cover cap, 4. indicator board, 5. valve core seal ring, 6. valve stem packing ring, 7. steel ball, 8. seal groove, 9. valve rod, 10. valve body, 11. valve body positioning blocks, 12. indicating arrows.

Embodiment

In order to be illustrated more clearly in the utility model embodiment's technological scheme, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Embodiment one: as shown in drawings, a kind of harmonious locomotive butterfly valve comprises valve body 10, valve block, valve rod 9 and the valve core seal ring 5 of cast aluminium alloy die cast; Valve rod 9 adopts the stainless steel material manufacturing, improves the corrosion resistance of valve rod 9; Valve rod 9 tops are provided with cover cap 3, use spanner to carry out the switching of butterfly valve by cover cap 3; Be provided with fixed cover 2 on valve rod, fixed cover 2 is provided with two sphericals that are 90 ° of angles, and butterfly valve is in when cutting out or opening fully, and spherical pushes up mutually with the elastic steel ball 7 that is contained in valve body 10, realizes position and lock; Valve rod 9 is equipped with the locating stud 1 that is 45 ° of angles, and butterfly valve is in when cutting out or opening fully, and locating stud 1 pushes up mutually with valve body limiting stopper 11, realizes bidirectionally limited effect; The parallel seal groove 8 that offers on valve rod 9, be provided with valve stem packing ring 6 in seal groove 8, valve core seal ring 5 and valve stem packing ring 6 are O-ring seals, be oil resistant hydrogenated nitrile-butadiene rubber seal ring, oil resistant hydrogenated nitrile-butadiene rubber seal ring has that friction factor is lower, not easy to wear, the aging-resistant advantage, effectively extends the working life of butterfly valve; Valve rod 9 tops are provided with indicator board 4, and direction board is provided with indicating arrow 12, are used to indicate the open and-shut mode of butterfly valve, and when butterfly valve was in closed condition, the direction of indicating arrow 12 was the flow direction of butterfly valve inner fluid.

Embodiment two: be that with embodiment one difference the seal groove 8 on valve rod 9 is twice, has improved the sealability of butterfly valve.

The above is only preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a harmonious locomotive butterfly valve, comprise valve block, valve body, valve rod and Sealing; Described valve body is cast aluminium alloy; It is characterized in that: described valve stem tip is provided with fixed cover, and described fixed cover is provided with two sphericals that are 90 ° of angles; Described valve rod is equipped with the locating stud that is 45 ° of angles.

2. a kind of harmonious locomotive butterfly valve as claimed in claim 1, it is characterized in that: the parallel seal groove that offers on described valve rod is provided with the O RunddichtringO in seal groove.

3. a kind of harmonious locomotive butterfly valve as claimed in claim 2, it is characterized in that: described O RunddichtringO is oil resistant hydrogenated nitrile-butadiene rubber seal ring.

4. a kind of harmonious locomotive butterfly valve as claimed in claim 2, it is characterized in that: the quantity of described seal groove and O RunddichtringO can be one or more.

5. a kind of harmonious locomotive butterfly valve as claimed in claim 1, is characterized in that: the manufacturing of described valve rod employing stainless steel material.

6. a kind of harmonious locomotive butterfly valve as claimed in claim 1, it is characterized in that: described valve stem tip is provided with indicator board.