CN2849349Y

CN2849349Y - Fast cut off valve

Info

Publication number: CN2849349Y
Application number: CN 200520092390
Authority: CN
Inventors: 权太明; 郭政华; 张立华
Original assignee: SHENYANG JINXIN COLD AND WARM ENQUIPMENT MANUFACTURE AND INSTALLATION CO Ltd
Current assignee: SHENYANG JINXIN COLD AND WARM ENQUIPMENT MANUFACTURE AND INSTALLATION CO Ltd
Priority date: 2005-09-07
Filing date: 2005-09-07
Publication date: 2006-12-20
Anticipated expiration: 2015-09-07

Abstract

The utility model provides a valve used in enclosed and direct-connected heating systems of tall buildings. The utility model aims to solve the problem that the heating system currently used can heat to a high zone radiator and a low zone radiator simultaneously, so when the power failure happens, a boosting pump stops working, and return water in the high zone can form static pressure which can be transferred to the low zone radiator, which causes threats to the safety of the low zone radiator. The utility model has the essential points that a water inlet and a water outlet are respectively arranged at both sides of a valve flap, and the water inlet is under the water outlet; both ends of a valve rod in which a path is arranged are respectively connected with the valve flap and a piston; an end cover chamber is formed between the piston and an end cover and is communicated with the water outlet through a pipeline; an electromagnetic valve is arranged on the pipeline; a spring is arranged between the piston and the end cover. The utility model has the effect that the transferring of the static pressure formed by the return water in the high zone, which is caused by pump stopping, to the low zone radiator can be efficiently and rapidly cut, so the closed direct-connected heating system without water tanks of the tall buildings can operate more safely.

Description

Quick isolating valve

Technical field

The utility model relates to a kind of valve, does not particularly have the valve that can cut off backwater fast that uses on the water tank enclosed direct connection heating system at tall building.

Background technique

Tall building does not have water tank enclosed direct connection heating system, it is the system of a kind of Xiang Gao district radiator simultaneously and low district radiator heating, this system technical problem to be solved be must Jiang Gao district heating water return pressure lower, puncture in case high district backwater will hang down district's radiator.Therefore this system mainly is made up of booster pump and control system, reduction valve, differential pressure flow controller, high district's radiator and low district radiator etc., booster pump and control system thereof are used for the heating heating agent is sent into high district radiator, and the dynamic pressure that reduction valve is used for Jiang Gao district heating water return lowers.When the power failure fault takes place when, booster pump quits work suddenly, at this moment dynamic pressure disappears, the backwater that has been positioned at high district radiator can form higher static pressure with respect to low district radiator, can not reduce at reduction valve under the situation of static pressure, this static pressure can be delivered to low district radiator, and the low safety of distinguishing radiator is threatened.

Summary of the invention

The purpose of this utility model is to provide a kind of tall building that is adapted at not have the valve that can cut off the backwater static pressure fast that uses on the water tank enclosed direct connection heating system.

The purpose of this utility model is achieved in that the both sides of flap are respectively water intake, water outlet, it is characterized in that: water intake is following, water outlet is last, in have the two ends of the valve rod of passage to connect flap and piston respectively, form the end cap chamber between piston and the end cap, the end cap chamber is communicated with water outlet by pipeline, on this pipeline, solenoid valve is set, when solenoid valve when opening state, the pressure in the end cap chamber equates between piston and the end cap spring is arranged with pressure in the water outlet.The utility model is installed in tall building not to be had on the high district of the water tank enclosed direct connection heating system radiator return piping.During normal heating, the high district backwater the utility model of flowing through, backwater is at the pressure of water intake pressure greater than water outlet, promptly greater than the pressure in the end cap chamber, after therefore water inlet has overcome the spring pressure on the flap, with flap jack-up, valve open, proper functioning; When having a power failure, the path between end cap chamber and the water outlet has been cut off in the action of solenoid valve dead electricity, and high district backwater flows into the end cap chamber by the passage of valve rod, the end cap chamber is equated with the pressure of water intake, under the effect of spring, piston and flap are descending, valve closing, at this moment be full of water in the end cap chamber, according to the incompressible principle of liquid, flap is closed firmly, thereby cut off high district backwater.

The utility model is compared with the prior art scheme, and it can be effectively, cut off the transmission to low district radiator of static pressure that high district backwater forms because of termination of pumping apace, and it is safer to make tall building not have the operation of water tank enclosed direct connection heating system.

Description of drawings

Further specify the utility model below in conjunction with accompanying drawing.

Accompanying drawing is a structural representation of the present utility model.

Embodiment

The both sides of flap 5 are respectively water intake 6, water outlet 8, water intake is following, water outlet is last, in have the two ends of the valve rod 10 of passage to connect flap 5 and piston 4 respectively, form end cap chamber 3 between piston and the end cap 1, the end cap chamber is communicated with 9 by pipeline 11 with water outlet, solenoid valve 12 is set on this pipeline, when solenoid valve when opening state, the pressure in the end cap chamber equates that with pressure in the water outlet spring 2 is arranged between piston and the end cap.The utility model is installed in tall building not to be had on the high district of the water tank enclosed direct connection heating system radiator return piping.During normal heating, the high district backwater the utility model of flowing through, backwater is at the pressure of water intake pressure greater than water outlet, promptly greater than the pressure in the end cap chamber, after therefore water inlet has overcome the spring pressure on the flap, with flap jack-up, valve open, proper functioning; When having a power failure, the path between end cap chamber and the water outlet has been cut off in the action of solenoid valve dead electricity, and high district backwater flows into the end cap chamber by the passage of valve rod, the end cap chamber is equated with the pressure of water intake, under the effect of spring, piston and flap are descending, valve closing, at this moment be full of water in the end cap chamber, according to the incompressible principle of liquid, flap is closed firmly, thereby cut off high district backwater.

In the accompanying drawing 7 is valve bodies.

Claims

1, a kind of quick isolating valve, the both sides of flap are respectively water intake, water outlet, it is characterized in that: water intake is following, water outlet is last, in have the two ends of the valve rod of passage to connect flap and piston respectively, form the end cap chamber between piston and the end cap, the end cap chamber is communicated with water outlet by pipeline, on this pipeline, solenoid valve is set, between piston and the end cap spring is arranged.