CN2584973Y

CN2584973Y - Controllable shuttoff valve

Info

Publication number: CN2584973Y
Application number: CN 02258966
Authority: CN
Inventors: 田雅青; 赵明林
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-26
Filing date: 2002-11-26
Publication date: 2003-11-05
Anticipated expiration: 2012-11-26

Abstract

The utility model relates to a controllable shutoff valve. The utility model aims to the specific requirements of the natural gas industry on the shutoff valve, and provides a controllable shutoff valve with shutoff function, emergency closing function and self-locking function in the safe use range of users. The utility model is mainly composed of a valve body, a valve core and a valve rod. The utility model is characterized in that a connecting body is connected with the valve body through the valve rod; the bottom surface of the connecting body and the bottom surface of the valve body form the spiral special-shaped contact; the upper end of the connecting body is connected with a handle through a clutch. As the structure of the spiral special-shaped surface between the bottom surface of the connecting body and the bottom surface of the valve body, the clutch is disengaged from the connecting body, the handle is rotated to run idle, and the shutoff valve is in the closing state. Compared with shutoff valve of the prior art, the utility model manufactures different shutoff valves with minimum flow quantity according to the flow quantity of the minimum media on the actual condition, satisfies the safety and the management requirements for special industries of gas, thermal power, chemical industry, etc., saves energy at maximum extent, and simultaneously has the advantages of simple structure, easy production, convenient operation and high reliability.

Description

Controlled shutoff valve

Technical field: the utility model relates to a kind of controlled shutoff valve, is widely used in the various pipelines.Mainly by valve body, spool, seal ring, connecting rod, handle with sleeve connect in proper order and form.

Background technique: at present, widely used shutoff valve all is by valve body in the natural gas line, seal ring, and spool, connecting rod, handle with sleeve is formed.The end positions of this valve has two: open and close.In the middle of these two positions, the user can arbitrarily carry out switch, can play effect of damming and emergency cut-off effect.Just because of its random operability, make special industries such as the high natural gas of security requirement, heating power, chemical industry, exist very big potential safety hazard and administrative vulnerability, mainly show following several respects:

1: the individual user is closed the preceding valve of table without authorization, the modifying gas pipeline, and private dress water heater and other combustion gas tool problem, administrative staff are uncontrollable.

2: the individual user unloads table and steals gas, and administrative staff can't discover.

3: the individual user refuses to pay gas expense, and administrative staff do not have the restriction means.

4: in the work progress, whether some uncertain users are installed reservation, avoid the waste and the uneasy congruent problem of secondary installing.

Up to this point, do not see a kind of controlled shutoff valve that can control effectively and restrict above drawback on the market yet.

Summary of the invention: for avoiding the defective of prior art, at the specific (special) requirements of Gas Industry to shutoff valve, the utility model provide a kind of in the user security using scope, have dam and emergency cut-off the size of may command minimum flow again, the controlled shutoff valve of band auto-lock function.

Technological thought of the present utility model is: the working procedure of shutoff valve is divided into two continuous, different work sections, and " 0 " point is break point.Between " opening " to " 0 " point, valve can be realized arbitrarily damming.At the active section of " 0 " point to " pass ", valve is closed by unidirectional, and can only open under given conditions.Shutoff valve mainly is made up of valve body 7, spool 11 and valve rod 9, it is characterized in that: connecting body 5 is connected by valve rod 9 with valve body 7, and the bottom surface of connecting body 5 is contacted with the bottom surface formation spiral special-shaped face of valve body 7; Connecting body 5 upper ends connect handle 3 by clutch 4.To between break point, the bottom surface of connecting body 5 contacts with the bottom surface formation face of valve body 7 " opening ", and handle 3 keeps normal rotation status, can realize arbitrarily damming.Because the spiral special-shaped face structure of the bottom surface of connecting body 5 and the bottom surface of valve body 7 makes both can form the break point " 0 " that active section is divided into two a certain location in rotation.Connecting body 5 transmits clutch 4 with the effect of spiral special-shaped face, makes clutch break away from connecting body 5, handle with sleeve 3 idle running, and shutoff valve is in closed condition.

The spiral special-shaped face of the bottom surface of the bottom surface of connecting body 5 and valve body 7 can be set special profile parameter according to the management data that the user provides, thereby realizes user's particular requirement.

In the shutoff valve upper end, design keyhole in handle 3 centers is used for opener.When shutoff valve is in closed condition, opener 13 is inserted, the body 5 that is rotatably connected makes in its position that comes back to break point and " opening ".

For this keyhole reaches dustproof button 1 connection sealing to cover 2.

The profile of valve body 7 is a T shape.

Dam and to close dead motion errorless for guaranteeing to finish, can connect with Handleset at connecting body 5, pressure spring is equipped with in the centre.

For guaranteeing the dense water of shutoff valve, design has seal ring 12 between valve body 7 and spool 11, and design has seal ring 8 between valve rod 9 and valve body 7.

The utility model is compared with the shutoff valve of prior art, the most significant advantage is: the minimum MEDIA FLOW value that can determine according to the actual conditions of region within the jurisdiction according to different management companies, make the shutoff valve of different minimum flows, satisfy the safety requirement and the management expectancy of special industries such as combustion gas, heating power, chemical industry, thereby farthest save the energy.The utility model is simple in structure simultaneously, is easy to make, and is easy to use, the reliability height.

Description of drawings:

Fig. 1: principle schematic

Fig. 2: structural representation

Fig. 3: embodiment

Fig. 4: the dustproof button of embodiment's External view 1-2-lid 3-handle 4-clutch 5-connecting body 6-spring 7-valve body 8-seal ring 9-valve rod 10-valve body plug 11-spool 12-seal ring 13-opener

Embodiment:

Now in conjunction with the accompanying drawings the utility model is further described.Among Fig. 3, valve body 7 is formed the valve body housing with valve body plug 10, it is to have the turnover gas passage that is interconnected, it is vertical with turnover gas channel center that valve rod is installed channel center, valve rod 9 is satisfied with wherein, and spool 11 is installed on valve body 7 centers, has flat groove to link to each other with valve rod 9 on it, handle system is realized damming, close and opening movement of shutoff valve by handling valve rod 9.Among Fig. 3, valve body 7 bottoms, connecting rod passage place are the special profiles of a spiral, can set special profile parameter according to the management data that the user provides, thereby realize user's particular requirement.Among Fig. 3, dustproof button 1, lid 2, handle 3, clutch 4, connecting body 5 and spring 6 constitute lever operated system, clutch 4 is formed a clutch mechanism with connecting body 5, spring 6 is equipped with in the centre, connecting body 5 links to each other with valve rod 9, its bottom is under the effect of spring 6, all the time contact in valve body 7 profiles, when rotatable handle 3, handle 3 drives clutch 4 rotations, and clutch 4 drives connecting body 5 rotations, and connecting body 5 moves along the curvilinear path of valve body 7 through all the time, and the parameter of curve has determined clutch to break away from and the interlock mode, and the disengaging of clutch and interlock mode also just determine size of damming and the opportunity of closing.In case clutch 4 and connecting body 5 are thrown off, then handle with sleeve idle running, shutoff valve is in closed condition, and can only can open this moment by opener.

Claims

1, a kind of controlled shutoff valve mainly is made up of valve body 7, spool 11 and valve rod 9, it is characterized in that: connecting body 5 is connected by valve rod 9 with valve body 7, and the bottom surface of connecting body 5 is contacted with the bottom surface formation spiral special-shaped face of valve body 7; Connecting body 5 upper ends connect handle 3 by clutch 4.

2, controlled shutoff valve according to claim 1 is characterized in that: in the shutoff valve upper end, and keyhole of handle 3 centers design.

3, controlled shutoff valve according to claim 1 is characterized in that: the profile of valve body 7 is a T shape.

4, according to claim 1 or 2 or 3 described controlled shutoff valves, it is characterized in that: can connect with Handleset at connecting body 5, pressure spring is equipped with in the centre.

5, according to claim 1 or 2 or 3 described controlled shutoff valves, it is characterized in that: design has seal ring 12 between valve body 7 and spool 11, and design has seal ring 8 between valve rod 9 and valve body 7.

6, controlled shutoff valve according to claim 2 is characterized in that: reach dustproof button 1 connection sealing to cover 2 on the keyhole.