CN2131004Y - Bellows-type drainer - Google Patents

Abstract

The utility model relates to a corrugated pipe drain device with a novel structure, which is mainly composed of a housing, a valve body, a temperature-sensing element and an adjusting device. The drain device is provided with an instability-proof element and a security element; the structure that the temperature-sensing element, the security element, an adjusting rod and the valve body are successively and integrally connected is used. The utility model has the characteristics of automatic drainage, reliable steam blocking performance, notable energy saving benefit, long service life, etc.; the using range can be widened.

Description

Bellows-type drainer

The present invention relates to a kind of hot static(al) formula STEAM TRAP, this STEAM TRAP is the metal bellows STEAM TRAP that is provided with anti-unstability element and security personnel's element.

The bellows STEAM TRAP of prior art is only applicable to below the 1.6MPa pressure, and its heat responsive element relies on the spring force before the valve point to contact dieback with adjustable lever in guide sleeve.When temperature changed, heat responsive element was a fore and aft motion vertically under the guiding of guide sleeve basically.Because the wavy metal pipe stiffness is poor, instability, bearing capacity is very poor, and the ability of especially bearing transverse force is poorer.When obstacle or valve seat are touched in the heat responsive element mobile terminal, the easy buckling deformation of bellows, especially the intermediate portion can outwards be plowed, so can not guarantee that the valve point is concentric with valve seat orifice, make and to be in the normal position that coincide between valve point and the valve seat, the ripple that its result will cause steam leakage or bellows is out of shape by guide sleeve squeezing partially, or heat responsive element a part stress is concentrated and breach occurred.

Above-mentioned ripple STEAM TRAP shortcoming is: 1, the bellows wall thickness has only 0.12～0.14mm, and allowable pressure is less, can not resist water attack.Especially when STEAM TRAP is in closed condition, respectively by valve seat and adjustable lever dieback, axially there is not the elongation degrees of freedom before and after the heat responsive element, when temperature rises or water hammer takes place, expansive force or internal pressure are increased severely, cause heat responsive element, especially bellows bursts is damaged.2, as can be known from the heat responsive element force analysis, its bellows is allowable, and to bear pressure lower, spring stress before the valve point can not be excessive, so the draining of STEAM TRAP can only flow into valve pocket from valve opening, otherwise STEAM TRAP can not be opened under hot system pressure, and therefore, the heat responsive element in the valve pocket is immersed in the condensed water under the back pressure, the highest temperature that can only reach capacity of the temperature of its condensed water, the condensate temperature of the discharge of this STEAM TRAP is lower than saturation temperature.If atmosphere is put in draining, its water temperature can only be lower than local atmosphere saturation temperature (generally being lower than 100 ℃), otherwise can cause a large amount of steam leakages.3, the drain flow mode of the STEAM TRAP of prior art impels hot system pressure to weaken sealing force, and therefore, application area is narrow, and the little gas leakage of discharge capacity is serious.

The purpose of this utility model provides a kind of metal bellows STEAM TRAP that is provided with anti-unstability element and security personnel's element, it is mainly by housing at one, valve body, in the steam trap connection that heat responsive element and controlling device are formed, in bellows, adopted the anti-unstability element of forming with the coaxial guide sleeve of bellows by two, between heat responsive element and adjustable lever, adopt spring seat, spring and block constitute security personnel's element, the whole Placement of its primary component is: after heat responsive element connects with security personnel's element with pin, its security personnel's element is again by adjustable lever one end, connect with adjustable lever by block, the other end of its adjustable lever connects with housing, and connecting so one by one just becomes overall structure.

Two guiding in the anti-unstability element are with three kinds of structures, and the one, an end of two guide sleeves is inserted with Spielpassung mutually, but axially unrestricted motion, the other end inserts valve point and valve tail, no axial motion with Spielpassung respectively.Can strengthen the rigidity of bellows like this, make bellows be difficult for buckling deformation.Another kind is that two guide sleeve also can be respectively and the valve point, and the valve tail is made of one; An also available simultaneously end is made of one with valve point or valve tail, and the guide sleeve that the other end inserts valve tail or valve point with the gap replaces.

Spring seat in security personnel's element is threaded the position of Regulation spring seat on adjustable lever, adjustable springs pretightening force with adjustable lever.The gap that 2～10mm is arranged between adjustable lever end face in block and the valve breech face, when the heat responsive element axially loaded surpassed initial tension of spring, heat responsive element is the motion compresses spring backward, otherwise, spring force promotes heat responsive element and travels forward, and makes it return to the origin-location.Damping vibrationproof like this, anti-water attack are anti-overheated.This spring can be the screw thread spring, also can be butterfly spring.Security personnel's element is that pin connects, is threaded, welds or blocks a shot and is made of one with the valve tail with the temperature-sensitive element.Security personnel's element connects by block socket or pin with adjustable lever.Adjustable lever is threaded with housing.In the linkage structure that integral body is connected as a single entity, the heat responsive element afterbody is fixed, head (valve point) can freedom move vertically, the draining of STEAM TRAP can directly enter cavity like this, heat responsive element is immersed in the hot system condensing water, Temperature at discharging condensate can be brought up to temperature near hot system saturation temperature, enlarges application area.

First characteristics of the present utility model are that the rigidity guide sleeve in the anti-unstability element supports bellows as animal bones supporting muscle, make bellows upright and outspoken not bent, and unstability not, is undirectedly plowed outward at no warpage.Guide sleeve and valve point, valve tail, insert in the mutual gap of guide sleeve and guide sleeve, and the valve point is freely swung in the 0.9mm scope, when heat responsive element is subjected to thermal stretching to cut out STEAM TRAP, the valve point slides along the valve seat orifice chamfer surface, makes the valve point concentric automatically with valve seat orifice, reaches the normal position that coincide mutually.The STEAM TRAP sealing is strengthened, and working pressure is brought up to 2.5MPa can not produce steam leakage yet.Second characteristic of the present utility model are that the anti-water attack of security personnel's element is anti-overheated.Spring in this element itself just can play the vibrationproof damping effect.When vapour system generation water attack or when STEAM TRAP is in closed condition temperature continuation rising, when heat responsive element internal pressure or expansive force surpass initial tension of spring, spring in the heat responsive element is compressed, make stressed its allowable pressure that is no more than of heat responsive element, guaranteed to work safely and reliably, thereby improved the operating life of STEAM TRAP.The 3rd characteristics of the utility model are new structures that heat responsive element, security personnel's element, adjustable lever and housing connect as one, its heat responsive element afterbody is affixed, head freely stretches, from stressed principle analysis as can be known, the vapour system condensed water direct admission valve chamber of can not reducing pressure, heat responsive element is immersed in when Temperature at discharging condensate is transferred near the vapo(u)rous temperature in the condensed water under the vapour system pressure, and heat responsive element still can sensitive temperature changes carry out proper functioning.Can find out from the analysis of sealing stressing conditions in addition, vapour system pressure plays the effect of increasing sealing force in this draining form, so the utility model structure can strengthen the sealing of STEAM TRAP, not only reliable performance, and Temperature at discharging condensate can be transferred near saturation temperature, thereby enlarges its using scope.

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing 1 is the full sectional drawing of STEAM TRAP of the present utility model.

Accompanying drawing 2 is sectional views that the utility model STEAM TRAP heat responsive element, security personnel's element and adjustable lever are connected one by one.

STEAM TRAP shown in the drawings is made up of valve body (1), valve point (2), guide sleeve (3), temperature sensing liquid (4), bellows (5), guide sleeve (6), valve tail (7), pin (8), pad (9), block (10), spring seat (11), valve gap (12), nut (13), adjustable lever (14), pad (15), housing (16), spring (17), plug (18) and valve seat (19).

As seen from the figure, anti-unstability element of the present utility model is made up of guide sleeve (3) and guide sleeve (6), and security personnel's element is made up of spring seat (11), spring (17), adjustable lever (14) and block (10); Heat responsive element of the present utility model is made up of valve point (2), plug (18), guide sleeve (3), (6), temperature sensing liquid (4), bellows (5) and valve tail (7).Rigidity guide sleeve (3) and (6) that its mutual Spielpassung is inserted are arranged in bellows (5), and coaxial line makes bellows (5) center line that rigid support is set, thereby makes the stressed straight not unstability of bellows (5) mutually, no differential mode distortion.When condensate temperature was elevated to predetermined temperature, bellows (5) expanded with temperature sensing liquid (4) and extends, and promotes the through flow hole that valve point (2) blocks valve seat (19).Owing between guide sleeve (3) and (6), between guide sleeve (3) and valve point (2), guide sleeve (6) and the valve tail (7) the 0.3mm radial clearance is arranged, valve point (2) can be swung in the 0.9mm scope.When valve point (2) when blocking valve seat orifice, the valve sharp conical surface is under the guiding of valve seat orifice chamfer surface, and valve point (2) coincide with valve seat orifice centering automatically, thereby reaches the energy-conservation purpose of the no steam leakage of sealing.When the temperature of condensed water is reduced to when being lower than predetermined temperature, bellows (5) shortens with temperature sensing liquid (4), affect valve point (2) to break away from valve seat (19) and the STEAM TRAP unlatching, the beginning continuous drainage reaches the function that stops steam leakage effectively thereby make STEAM TRAP possess the continuous condensed water that produces of automatic discharged steam system.Since adjustable lever (14) with security personnel's element by block (10) socket and and valve tail (7) 4mm apart, when so temperature sensing liquid (4) continues expanded by heating when vapour system generation water attack or STEAM TRAP are closed, when heat responsive element bears pressure above spring (17) pretightening force, valve tail (7) promotes spring (17) and shrinks, make stressed its allowable pressure that is no more than of heat responsive element, the purpose that has realized that the anti-water attack of the utility model is anti-overheated and guaranteed to use safely.The utility model heat responsive element is connected by pin (8) with security personnel's element, and security personnel's element and adjustable lever (14) are by block (10) socket, and adjustable lever (14) connects by the same housing of screw thread (16).By the part fixing structure of heat responsive element afterbody that is connected as a single entity hot system condensing water can be directly entered in its cavity by the import of valve body (1) like this.Because heat responsive element is to work in the condensed water that is immersed under the hot system pressure condition, thus when Temperature at discharging condensate is transferred near the vapo(u)rous temperature, STEAM TRAP still can be under the situation of no steam leakage proper functioning.In addition, when STEAM TRAP was in closed condition, hot system pressure can strengthen sealing force.Thereby realized that the utility model can regulate Temperature at discharging condensate in being lower than the vapo(u)rous temperature range, enlarged application area, improved resistance to pressure, increased the service life, overcome the bellows unstability, improved the sealing of STEAM TRAP and the reliability of draining resistance vapour.This model utility does not have steam leakage, and Temperature at discharging condensate is adjustable, and the condensed water sensible heat can be fully used, thereby than the STEAM TRAP of prior art energy-conservation 10% to 30%.

Claims (6)

1, a kind of being provided with prevented the unstability element, the metal bellows STEAM TRAP of security personnel's element and heat responsive element, the anti-unstability element of this STEAM TRAP is made up of guide sleeve (3) and guide sleeve (6), security personnel's element is by spring seat (11), spring (17), adjustable lever (14) and block (10) are formed, heat responsive element is by valve point (2), plug (18), temperature sensing liquid (4) bellows (5) and valve tail (7) are formed, it is characterized in that anti-unstability element is located in the metal bellows (5) of heat responsive element, security personnel's element is located between heat responsive element and the adjustable lever (14), fuses with housing (16) after connecting one by one.

2, metal bellows STEAM TRAP according to claim 1, it is characterized in that anti-unstability element forms with the coaxial guide sleeve of bellows (3) and (6) by two, wherein the mutual Spielpassung of an end is inserted, the other end Spielpassung is inserted valve point (2) valve tail (7) respectively, guide sleeve (3) and (6) can be made of one with valve point (2) valve tail (7) respectively, also available one one end is made of one with valve point (2) valve tail (7), and the guide sleeve that the other end Spielpassung is inserted valve tail (7) or valve point (2) replaces.

3, metal bellows STEAM TRAP according to claim 1, the element that it is characterized in that ensuring public security is made up of spring seat (11), screw thread spring (17), adjustable lever (14) and block (10), spring seat (11) is determined initial tension of spring by the position on the threaded adjusting adjustable lever.

4, metal bellows STEAM TRAP according to claim 1, the element that it is characterized in that ensuring public security is connected with pin (8) with heat responsive element.

5, metal bellows STEAM TRAP according to claim 1, it is characterized in that ensuring public security element and adjustable lever (14) are by block (10) socket.

6, metal bellows STEAM TRAP according to claim 1 is characterized in that adjustable lever (14) is to be threaded with housing (16).

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