CN201202959Y

CN201202959Y - Bellows air-discharging free floating ball type steam drain valve

Info

Publication number: CN201202959Y
Application number: CNU200820074758XU
Authority: CN
Inventors: 李生辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-15
Filing date: 2008-05-15
Publication date: 2009-03-04
Anticipated expiration: 2018-05-15

Abstract

The utility model provides a full automatic free ball-floating steam water drain valve for the steam heating device, the steam pipe network and the condensate water recycling system, which uniquely takes a sylphon temperature-sensing component as an automatic air exhaust device in the steam water drain valve, and has the advantages that the utilized sylphon volume is small, the sensitivity is high and the service lift is long. The generated outward displacement is fixed due to temperature-sensing expansion every time, the loss and fatigue states are inexistence, the working performance is rather stable, the air blocking or air locking phenomenon which caused by not exhausting the air in the used device in time can be effectively avoided, thereby improving the working performance and the usage efficiency of the used device.

Description

Bellows emptying gas free floating ball type Automatic steam trap Trap

Technical field

The utility model relates to a kind of Automatic steam trap Trap, in particular for steam-heating apparatus, and the free floating ball type Automatic steam trap Trap of steam pipe system and the automatic block steam and drain water of condensate return system.

Background technique

At present, the free floating ball type Automatic steam trap Trap discharging modes that circulate on the market have two kinds, two kinds in promptly manual emptying gas and automatic emptying gas:

1, the free floating ball type Automatic steam trap Trap of manual emptying gas, mainly be that a small-sized needle type valve is installed above the drain valve valve gap, utilize manually-operated means, before drain valve work each time, manually open needle type valve, deaeration is closed after air discharging by the time finishes again, recycles.There is very big disadvantage in the Automatic steam trap Trap that emptying gas is manually carried out in this utilization, when the air of use equipment or pipeline inside is not in time got rid of, not only drain valve can't carry out work, and use equipment also can't normally start, in addition, applying unit must be equipped with special bleed air operation personnel, causes very big personnel to waste problem.

2, the free floating ball type Automatic steam trap Trap of automatic emptying gas generally adopts bimetallic strip as automatic emptying gas heat responsive element at present, relies on bimetallic strip to produce the principle of distortion under high-temperature condition, makes drain valve reach the function of automatic discharged air.Though this Automatic steam trap Trap of the automatic emptying gas of bimetallic strip that utilizes has solved the variety of issue that manual emptying gas mode produces, but some new problems have also been produced simultaneously, particularly bimetallic strip is easy to generate the problem that metal fatigue, sensitivity are relatively poor, working life is short as heat responsive element, cause the Automatic steam trap Trap air leakage big, the service behaviour instability.

Summary of the invention

For solving a series of problems that existing free floating ball type Automatic steam trap Trap emptying gas mode exists, the utility model adopts the bellows heat responsive element as new type auto emptying gas element, aims to provide a kind of bellows emptying gas free floating ball type Automatic steam trap Trap.

The utility model mainly is made of every cover, stainless steel hollow float, float valve seat etc. jointly valve body, valve gap, bellows heat responsive element, bellows spool, spring, bellows filter sheet, jump ring, filter holder, filter screen, the bellows heat responsive element is fixed on the bellows spool by spring, bellows filter sheet and filter holder utilize jump ring to be engaged togather, constitute automatic emptying device of air with bellows spool and bellows heat responsive element, be fixed on the valve gap; The stainless steel hollow float is placed on the valve inner filter screen every the cover below, and float valve seat is arranged on the following 15 degree angles of ball float horizontal plane, is used for the condensed water discharging.

The inner bellows emptying gas element that adopts of the utility model drain valve, mainly be to utilize bellows as heat responsive element, the alcohols prescription liquid that is equipped with by bellows inside is along with the continuous variation of vapor (steam) temperature and pressure, prescription vaporizing liquid or condensation, make the inner valve block of bellows heat responsive element produce displacement, open or close the drain valve spool, reach drain valve automatically removing air or incondensable gas.Because this bellows heat responsive element is by the welding once-through, good seal performance, liquid that can not volatilization and loss, service behaviour is very stable, so bellows emptying gas element as the emptying device of air of free floating ball type Automatic steam trap Trap, can effectively improve the service behaviour of drain valve.

The utility model has solved the problem that original drain valve heat responsive element poor sensitivity, working life are short, the steam leakage rate is big fully, and the equipment that can prevent produces the stifled phenomenon of gas, has improved steam utilization, is applicable to various steam gas equipments.

Description of drawings

Fig. 1 is the longitudinal sectional drawing of bellows emptying gas free floating ball type Automatic steam trap Trap.

Among Fig. 1, valve body (1), valve gap (2), bellows heat responsive element (3), bellows spool (4), spring (5), bellows filter sheet (6), jump ring (7), filter holder (8), filter screen are every cover (9), stainless steel hollow float (10), float valve seat (11).

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

As shown in Figure 1, bellows emptying gas free floating ball type Automatic steam trap Trap mainly is made of every cover (9), stainless steel hollow float (10), float valve seat (11) jointly valve body (1), valve gap (2), bellows heat responsive element (3), bellows spool (4), spring (5), bellows filter sheet (6), jump ring (7), filter holder (8), filter screen, bellows heat responsive element (3) is fixed on the bellows spool (4) by spring (5), and bellows filter sheet (6) is fixed on the valve gap by jump ring (7) and filter holder (8).When steam-heating apparatus or steam pipe system supply steam, whole Automatic steam trap Trap is cool, bellows heat responsive element (3) also is cool, drain valve is in opening state, incondensable gas is under the operating pressure differential effect in the equipment, filtration through bellows filter sheet (6), discharge Automatic steam trap Trap from the gap between bellows heat responsive element (3) and the bellows spool (4), after the incondensable gas discharging finishes, use equipment or pipe network are realized starting rapidly, form heat exchange gradually, produce water of condensation, what at first enter the drain valve valve pocket is cold condensate, and at this moment bellows heat responsive element (3) still is in opening state with the surface of contact of bellows spool (4), under the operating pressure differential effect, part cold condensate is discharged rapidly, and another part cold condensate produces to buoyancy, along with the lifting of cold condensate liquid level stainless steel hollow float (10) through filter screen every cover (9), stainless steel hollow float (10) is opened float valve seat (11), and cold condensate emits from float valve seat (11); Use this moment equipment constantly carries out heat exchange, condensing water temperature is more and more higher, saturation temperature near steam, form condensed water in high temperature, when condensed water in high temperature enters Automatic steam trap Trap valve body (1), whole valve pocket begins to heat up, when the temperature in the valve pocket is lower than the temperature sensor of bellows heat responsive element (3), bellows heat responsive element (3) still is in open mode with the surface of contact of bellows spool (4), the elevated temperature heat water of condensation is also discharged rapidly by bellows valve seat (11), when the temperature in the valve pocket is higher than the temperature sensor of bellows heat responsive element (3), dilatant in the bellows heat responsive element (3) vaporized expanding that is heated, volume increases, and promotes diaphragm and outwards moves, close bellows spool (4), the emptying airway dysfunction of free floating ball type Automatic steam trap Trap quits work; Stainless steel hollow float (10) in the valve pocket is not subjected to the influence of condensing water temperature, no matter be cryogenic condensation knot water or condensed water in high temperature, stainless steel hollow float (10) is always automatically adjusted float valve seat (11) openings with what of condensing capacity, when water of condensation has been arranged, stainless steel hollow float (10) is along with the water of condensation liquid level descends, close float valve seat (11), whole free floating ball type Automatic steam trap Trap quits work, when producing water of condensation once more before the drain valve valve, stainless steel hollow float (10) is opened float valve seat (11) again, the continuity of going round and beginning again discharging water of condensation; When the equipment of use stop supplies steam, the room temperature of valve pocket begins to reduce, the inner dilatant of bellows heat responsive element (3) changes liquefaction into by vaporization, volume shrinkage, break away from bellows spool (4), thereby unlatching drain valve, discharge the water of condensation that produces rapidly, when use equipment is started working next time by the time, bellows heat responsive element (3) plays the effect of automatic emptying gas again, and the incondensable gas of remover apparatus inside prevents to produce gas and blocks up efficiently and effectively, bellows heat responsive element (3) is exactly the temperature difference that relies on steam and water of condensation, finishes the function of automatic emptying gas and water of condensation again and again.

Claims

1, bellows emptying gas free floating ball type Automatic steam trap Trap, mainly form jointly every cover (9), stainless steel hollow float (10), float valve seat (11), it is characterized in that valve gap (2) below is equipped with bellows heat responsive element (3) as emptying gas use automatically by valve body (1), valve gap (2), bellows heat responsive element (3), bellows spool (4), spring (5), bellows filter sheet (6), jump ring (7), filter holder (8), filter screen.

2, according to the bellows emptying gas free floating ball type Automatic steam trap Trap described in the claim 1, it is characterized in that bellows heat responsive element (3) is fixed on the bellows spool (4) by spring (5), bellows filter sheet (6) is fixed on the valve gap (2) by jump ring (7) and filter holder (8).