CN1667304A

CN1667304A - Butterfly valve with on-line detectable sealing pressure

Info

Publication number: CN1667304A
Application number: CN 200410016794
Authority: CN
Inventors: 季祝华; 季艳艳; 王建莲; 季爱益; 季益芳
Original assignee: Shanghai Haixing Valve General Factory
Current assignee: Shanghai Haixing Valve General Factory
Priority date: 2004-03-08
Filing date: 2004-03-08
Publication date: 2005-09-14

Abstract

The invention supplies an online detecting sealed pressure butterfly valve. The butterfly board has cam function and can eliminate all the connection friction between sealed component and valve base during the valve gate moving to make it still have sealed function when frequently close and open. Two flanges would be saved by connecting the function of butterfly valve and extension tube. The second sealing would detect the sealing pressure online. The valve would take place of gate valve, break valve, globe valve. And it can match to use with any electric drive component, air drive component, and so on, to realize aim of long-distance controlling, adjusting or cutting a medium.

Description

Can online detection sealing load butterfly valve

The present invention relates to improved valve on a kind of pipeline, is the thin valve of a kind of body.

The objective of the invention is: provide a kind of can online detection sealing load butterfly valve, butterfly plate has cam action and has eliminated all contact frictions between the Sealing and valve seat in valve stroke, making it when frequent the keying is the sealing effect of tool all the time, butterfly valve and telescopic pipe two functions are integrated and save two flanges, and secondary seal is installed at valve can online detection sealing load in the pipeline.Seal ring contacts with valve seat with certain contact, face is distributed on the valve seat again fully fifty-fifty around centering on it equably, owing to be that valve seat is stressed, therefore valve does not promptly need mechanical position-arresting device when cutting out, the characteristics of long service life adapt to the impact of the liquid of low middle pressure, and circulation area is big, flow resistance coefficient is little, compact structure, aesthetic in appearance, in light weight, hoisting capacity is apart from reducing to minimum, be convenient to I﹠M, flexible operation, this valve are the update products that substitutes gate valve and stop valve, except that manually with any electronic, pneumatic, Deng the supporting use of mechanism, realize telecontrol adjusting or cut-out-rate-of flow purpose.

The present invention has the following advantages: a kind of can online detection sealing load butterfly valve, include body, this body has the control speed reducer, mandrel, valve body mechanical connection, mandrel butterfly plate mechanical connection, the sealing of interlayer prime is paid in the sealing that increases on the butterfly plate, and final-stage seal, valve body carry out special process in manufacture process handles, take in the valve body and connect online detection sealing load pipe, butterfly valve and telescopic pipe two functions two the flange mechanical connections that are integrated, secondary seal is installed in the pipeline at valve can online detection sealing load, and this valve can isolate fire and play anti-fire action when cutting out, be widely used in: oilfield exploitation, chemical industry, petrochemical industry, coal gas, rock gas, thermoelectricity, water power plant, iron and steel, urban construction, tap water, sewage treatment, pharmacy, engineerings such as food are particularly used on the pipeline transport engineering.The present invention is easy to use, exchange to install lightly, and when gate valve and the stop valve under same specification pressure and material during embodiment below adopting, its weight only is 1/3 of gate valve and stop valve, so has reduced cost greatly.

Fig. 1 is the longitudinal sectional drawing of a kind of concrete structure of the present invention.

Describe details and the working condition that proposes concrete structure according to the present invention in detail below in conjunction with Fig. 1, this invention is by control speed reducer 1, connect mandrel 2, the clamping of multi-disc stainless steel becomes one group of butterfly plate 3, be fastened on the mandrel 2 by stainless steel bolt, valve body 4 sealing surfaces and butterfly plate 3 sealing couplings, to reach sealing purpose, prime sealing 5, final-stage seal 6, valve body carries out special process in manufacture process handles, and takes over 7 in the valve body, connects online detection sealing load pipe 8, butterfly valve and telescopic pipe 9, two functions, two the flange mechanical connections that are integrated, and three off-centre not fixedly the stop bit device just can seal, the special adaptation in the roadside, often use on the pipeline on the ground environment of vibrations.

Claims

A kind of can online detection sealing load butterfly valve, include body, this body has the control speed reducer, mandrel, compositions such as valve body, it is characterized in that: the sealing of interlayer prime is paid in the sealing that increases on the butterfly plate, final-stage seal, valve body carries out special process in manufacture process handles, take over to connect online detection sealing load pipe in the valve body, butterfly valve and telescopic pipe two functions two the flange mechanical connections that are integrated, secondary seal is installed in the pipeline at valve can online detection sealing load, mandrel and valve body mechanical connection, mandrel and butterfly plate mechanical connection, the sealing that increases on the butterfly plate are paid and are selected stainless steel material for use, and butyl folder graphite layer is also carried out special process and handled in manufacture process, control speed reducer and mandrel mechanical connection, control speed reducer and valve body mechanical connection.